#Top CSS Interview Questions for Freshers

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Top CSS Interview Questions for Freshers

A curated collection of essential CSS interview questions tailored for freshers. Perfect for mastering foundational concepts like selectors, box models, and positioning, with practical examples to boost your confidence for entry-level web development roles.

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80+ CSS and CSS3 Interview Questions and Answers | Digital Marketing Seva

CSS is used for making use of the kinds for the HTML components. Find here Top CSS & CSS3 Interview Questions and Answers for Freshers and Experienced.

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300+ TOP ORACLE RAC Interview Questions and Answers

ORACLE RAC Interview Questions for freshers experienced :- 

1. What is cache fusion? In a RAC environment, it is the combining of data blocks, which are shipped across the interconnect from remote database caches (SGA) to the local node, in order to fulfill the reuirements for a transaction (DML, uery of Data Dictionary). 2. What is split brain? When database nodes in a cluster are unable to communicate with each other, they may continue to process and modify the data blocks independently. If the same block is modified by more than one instance, synchronization/locking of the data blocks does not take place and blocks may be overwritten by others in the cluster. This state is called split brain. 3. What is the difference between Crash recovery and Instance recovery? When an instance crashes in a single node database on startup a crash recovery takes place. In a RAC enviornment the same recovery for an instance is performed by the surviving nodes called Instance recovery. 4. What is the interconnect used for? It is a private network which is used to ship data blocks from one instance to another for cache fusion. The physical data blocks as well as data dictionary blocks are shared across this interconnect. 5. How do you determine what protocol is being used for Interconnect traffic? One of the ways is to look at the database alert log for the time period when the database was started up. Want To Get RAC Training From Experts? Enroll Now For Free Demo On Oracle RAC Training. 6. What methods are available to keep the time synchronized on all nodes in the cluster? Either the Network Time Protocol(NTP) can be configured or in 11gr2, Cluster Time Synchronization Service (CTSS) can be used. 7. What files components in RAC must reside on shared storage? Spfiles, ControlFiles, Datafiles and Redolog files should be created on shared storage. 8. Where does the Clusterware write when there is a network or Storage missed heartbeat? The network ping failure is written in $CRS_HOME/log 9. How do you find out what OCR backups are available? The ocrconfig -showbackup can be run to find out the automatic and manually run backups. 10. If your OCR is corrupted what options do have to resolve this? You can use either the logical or the physical OCR backup copy to restore the Repository.

ORACLE RAC Interview Questions 11. How do you find out what object has its blocks being shipped across the instance the most? You can use the dba_hist_seg_stats. 12. What is a VIP in RAC use for? The VIP is an alternate Virtual IP address assigned to each node in a cluster. During a node failure the VIP of the failed node moves to the surviving node and relays to the application that the node has gone down. Without VIP, the application will wait for TCP timeout and then find out that the session is no longer live due to the failure. 13. How do we know which database instances are part of a RAC cluster? You can uery the V$ACTIVE_INSTANCES view to determine the member instances of the RAC cluster. 14. What is OCLUMON used for in a cluster environment? The Cluster Health Monitor (CHM) stores operating system metrics in the CHM repository for all nodes in a RAC cluster. It stores information on CPU, memory, process, network and other OS data, This information can later be retrieved and used to troubleshoot and identify any cluster related issues. It is a default component of the 11gr2 grid install. The data is stored in the master repository and replicated to a standby repository on a different node. 15. What would be the possible performance impact in a cluster if a less powerful node (e.g. slower CPU’s) is added to the cluster? All processing will show down to the CPU speed of the slowest server. 16. What is the purpose of OLR? Oracle Local repository contains information that allows the cluster processes to be started up with the OCR being in the ASM storage ssytem. Since the ASM file system is unavailable until the Grid processes are started up a local copy of the contents of the OCR is reuired which is stored in the OLR. 17. What is the default memory allocation for ASM? In 10g the default SGA size is 1G in 11g it is set to 256M and in 12c ASM it is set back to 1G. 18. How do you backup ASM Metadata? You can use md_backup to restore the ASM diskgroup configuration in-case of ASM diskgroup storage loss. 19. What files can be stored in the ASM diskgroup? In 11g the following files can be stored in ASM diskgroups. Datafiles Redo logfiles Spfiles In 12c the files below can also new be stored in the ASM Diskgroup Password file 20. What it the ASM POWER_LIMIT? This is the parameter which controls the number of Allocation units the ASM instance will try to rebalance at any given time. In ASM versions less than 11.2.0.3 the default value is 11 however it has been changed to unlimited in later versions. 21. What is a rolling upgrade? A patch is considered a rolling if it is can be applied to the cluster binaries without having to shutting down the database in a RAC environment. All nodes in the cluster are patched in a rolling manner, one by one, with only the node which is being patched unavailable while all other instance open. 22. What are some of the RAC specific parameters? Some of the RAC parameters are: CLUSTER_DATABASE CLUSTER_DATABASE_INSTANCE INSTANCE_TYPE (RDBMS or ASM) ACTIVE_INSTANCE_COUNT UNDO_MANAGEMENT 23. What is the future of the Oracle Grid? The Grid software is becoming more and more capable of not just supporting HA for Oracle Databases but also other applications including Oracle’s applications. With 12c there are more features and functionality built-in and it is easier to deploy these pre-built solutions, available for common Oracle applications. Explore Oracle RAC Sample Resumes! Download & Edit, Get Noticed by Top Employers!Download Now! 24. What components of the Grid should I back up? The backups should include OLR, OCR and ASM Metadata. 25. Is there an easy way to verify the inventory for all remote nodes You can run the OPATCH LSINVENTORY -ALL_NODES command from a single node to look at the inventory details for all nodes in the cluster. 26. If I am using Vendor Clusterware such as Veritas, IBM, Sun or HP, do I still need Oracle Clusterware to run Oracle RAC 10g? Yes. When certified, you can use Vendor Clusterware however you must still install and use Oracle Clusterware for RAC. Best Practice is to leave Oracle Clusterware to manage RAC. For details see Metalink Note 332257.1 and for Veritas SFRAC see 397460.1. 27. Is RAC on VMWare supported? Yes. 28. What is hangcheck timer used for ? The hangcheck timer checks regularly the health of the system. If the system hangs or stop the node will be restarted automatically. There are 2 key parameters for this module: hangcheck-tick: this parameter defines the period of time between checks of system health. The default value is 60 seconds; Oracle recommends setting it to 30seconds. hangcheck-margin: this defines the maximum hang delay that should be tolerated before hangcheck-timer resets the RAC node. 29. Is the hangcheck timer still needed with Oracle RAC 10g? Yes. 30. What files can I put on Linux OCFS2? For optimal performance, you should only put the following files on Linux OCFS2: Datafiles Control Files Redo Logs Archive Logs Shared Configuration File (OCR) Voting File SPFILE 31. Is it possible to use ASM for the OCR and voting disk? No, the OCR and voting disk must be on raw or CFS (cluster file system). 32. Can I change the name of my cluster after I have created it when I am using Oracle Clusterware? No, you must properly uninstall Oracle Clusterware and then re-install. 33. What the O2CB is? The O2CB is the OCFS2 cluster stack. OCFS2 includes some services. These services must be started before using OCFS2 (mount/ format the file systems). 34. What the OCR file is used for? OCR is a file that manages the cluster and RAC configuration. 35. What the Voting Disk file is used for? The voting disk is nothing but a file that contains and manages information of all the node memberships. 36. What is the recommended method to make backups of a RAC environment?                          RMAN to make backups of the database, dd to backup your voting disk and hard copies of the OCR file. 37.  What command would you use to check the availability of the RAC system? crs_stat -t -v (-t -v are optional) 38. What is the minimum number of instances you need to have in order to create a RAC? You can create a RAC with just one server. 39.  Name two specific RAC background processes RAC processes are: LMON, LMDx, LMSn, LKCx and DIAG. 40.  Can you have many database versions in the same RAC? Yes, but Clusterware version must be greater than the greater database version. 41.  What was RAC previous name before it was called RAC?OPS: Oracle Parallel Server 42.  What RAC component is used for communication between instances?Private Interconnect. 43.  What is the difference between normal views and RAC views?A RAC view has the prefix ‘G’. For example, GV$SESSION instead of V$SESSION 44.  Which command will we use to manage (stop, start) RAC services in command-line mode? srvctl 45.  How many alert logs exist in a RAC environment? A- One for each instance. 46. What are Oracle Clusterware Components Voting Disk — Oracle RAC uses the voting disk to manage cluster membership by way of a health check and arbitrates cluster ownership among the instances in case of network failures. The voting disk must reside on shared disk. Oracle Cluster Registry (OCR) — Maintains cluster configuration information as well as configuration information about any cluster database within the cluster. The OCR must reside on shared disk that is accessible by all of the nodes in your cluster 47. How do you backup voting disk #dd if=voting_disk_name of=backup_file_name 48. How do I identify the voting disk location #crsctl query css votedisk 49. How do I identify the OCR file location check /var/opt/oracle/ocr.loc or /etc/ocr.loc ( depends upon platform) or #ocrcheck 50. What is SCAN? Single Client Access Name (SCAN) is s a new Oracle Real Application Clusters (RAC) 11g Release 2 feature that provides a single name for clients to access an Oracle Database running in a cluster. The benefit is clients using SCAN do not need to change if you add or remove nodes in the cluster. ORACLE RAC Questions and Answers pdf download Read the full article

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Linux Interview Questions and Answers | Linux Experienced, Freshers | Li...

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Top 50 HTML Interview Questions

After study, the toughest stage is how to crack an interview. Going for a job interview make us feel like we are back in school examination. In an interview, our job is to show our hidden talent and convince a recruiter that we have a required talent.

For this, we have limited time to provide true representation of our skills, experience, and knowledge to recruiters. To impress a recruiter, we have discussed top html interview questions that are listed below:

 1. What is HTML?

HTML is the short form of "Hypertext Markup Language". It is a computer language used to create web pages by using the ordinary text. It is not so difficult to learn and understand.

It consists of some syntax and code words same as like other computer languages. The HTML file must be saved with .html extension. read more

2. Describe the different versions of HTML?

HTML has come with so many different versions from beginning to till like HTML, HTML+, HTML 2.0, HTML 3.2, HTML 4.0 and the latest version of HTML 5.

3. What is a DOCTYPE?

DOCTYPE means Document Type Declarations. It is used to specify the web browsers that which types of documents (such as SGML or XML Documents) it will receive. In the HTML program, the <!DOCTYPE> comes above the <html> tag.

Important Note: I will prefer you to buy this book which helps to understand the major concepts of HTML, CSS, JS and JQuery 

 4. One of the core concepts in html interview question for freshers is to explain HTML tags?

HTML tags consist with three main elements which are opening tag, content and a closing tag, but some tags need only open tag, not close tag. The opening and closing tags are written in the angle brackets like <>.

The opening tag is the indication to start the command and the closing tag is the indication to close the command, hence it comes with the slash. See the syntax below:

 <tag> content </tag>

5. How many types of HTML tags?

Generally, HTML tags come in two types paired tag and unpaired tag. The paired tags are much, but unpaired tags are very less.

 The examples of paired tags are <p> </p>, <h1> </h1>, <b> </b>, <i> </i>, etc.

 The unpaired tags are <br>, <img>, etc.

6. Name the list tags which are used to design a web page?

List tags are very helpful to design a systematic web page. See below the list tags, which make your web page orderly.

 ordered list

unordered list

definition list

menu list

directory list

 All these tags can be used to compose a web page

 Read more article: HTML INTERVIEW QUESTIONS 

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Top CSS Interview Questions & Answers

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CSS Interview Questions

                  CSS Interview Questions

CSS Interview Questions:- Hi readers,We have prepared some good interview questions with answers on CSS,This questions will not only clear the topic but also prepare fresher candidate for grabing Jobs.Here I start session on CSS Interview Questions with answers

Top 25 CSS Interview Questions

What do you understand by the word “Cascading” in CSS…

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React JS Training  in BTM Bangalore

What is ReactJS?

It is developed by Facebook. Reactjs is a front-end JavaScript library used for web development. It develops fast and interactive user interfaces for the development of web and mobile applications. It is free and open-source. It is flexible and easier to debug. It is easy to inject.

ReactJS certification program in AchieversIT will be the best choice. We will teach all the concepts from scratch by our professionals.

There is a great demand for Reactjs developers. It is one of the right learning platforms where you will be trained from the basic to the advanced level.

The training will help you to understand how ReactJS works, its installation, its concepts, etc.

About Reactjs Certification training

The ReactJS course with AchieversIT will be provided by expert trainers with hands-on experience in IT industries. We will offer training according to the current industry scenario.  

After the completion of the entire course, you will master the skills that are required for your dream career. The skills that you gained from the course will help you to crack the interview and we will make the candidate ready full-fledged.

Our expert trainers will provide a clear explanation of the front end that is related to react js technology and the doubts, questions from the candidate will be solved with a clear explanation by our trainers.

The ReactJS course training includes React component, react state and react props, packages in react, routing in react, react event handling. This training will help you to understand the concepts such as Component, lifecycle, HTTP and deployment, state and context API, React router V4, etc.

Reactjs exam and Certification

AchieversIT certification after the completion of the course is applicable to companies across the world thus the certification, of course, is very important for a candidate that would increase the value of the resume. It is helpful for freshers as well as professionals to get placed on leading MNCs. The certification is provided only after the successful completion of the theoretical and practical sessions. Our certification will help you to start a great career and achieve your goal in top MNCs across the world.

Key features of Reactjs course.

60+ hours course duration

100% job-based training

Industry expert trainers

Completed 200+ batches

Free demo classes are provided

Placement guidance

Recorded classes

Objectives of Reactjs

Proper understanding of web development Architecture

Build an application using React components

Performance of Route navigation

Development of web application by React with Redux

Program Async Actions utilizing Redux-Saga Middleware

Create queries using GraphQL

Implement Test Cases using Jest

Convey Applications utilizing Docker and Nginx

Who can apply for the Reactjs course?

Freshers and working professionals are welcome for this course. Basic computer knowledge is enough for this course.

We will cover all the basics of concepts of HTML, JS, CSS. Candidates who have knowledge in UI & UX, web development, and software development can apply for the course.

Candidates who are new to the technology can also apply because our trainers will train from the basic concepts of react js it would be easy to understand the react js development.

Why should you join AchieversIT for a Reactjs course?

We provide recorded videos of training sessions so that students can take advantage of the videos if they miss any lessons.

All our training classes will be based on industrial projects.

Our education flow will be carried out on a daily and weekly basis, or we can run it according to the needs of the students.

Our institute offers a certificate program, practical assessments, Mock interviews, and Resume preparation.

Our expert instructors will provide in-depth knowledge of all concepts and any doubts can be cleared from any concept in the course.

After the course has been compiled, we will issue you course completion certificates.

Our instructors are certified and experienced in their fields.

Our corporate clients, Amazon, Flipkart, Accenture, Dell, IBM, HCL, Infosys, Cognizant, we will place you in any top MNC.

Once the completion of the training, we will arrange interview sessions with students and guide them to prepare for the face-to-face interview.

Trainer Profile of Reactjs development training

Our trainers will provide an in-depth explanation of the course and they will also provide real-time projects according to the current standard industries. They provide Mock interviews for the students to get the knowledge about how the interviews would be and trainers will clear all your doubts and questions from the course.

Our trainers have more than 5-7 years of experience

More than 1000+ students are trained in a year.

Strong and best theoretical and practical knowledge

Certified trainers with high grade

Our trainers offer you real-time projects based on real-world industries application.

Have better connections with HRs from top MNC companies.

Our corporate clients are Amazon, Flipkart, Accenture, Dell, IBM, HCL, Infosys, Cognizant, we will make you placed in any top MNCs.

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300+ TOP Material Design Lite Interview Questions and Answers

Material Design Lite Interview Questions for freshers experienced :-

1. What is Material Design Lite? Material Design Lite is UI component Library. It is created with CSS, JavaScript and HTML. It is used for design purpose. It is developed by Google in 2014. 2. What are the features of Material Design Lite? Material Design Lite features are: It is used to create responsive design. It provides Standard CSS. It provides cards, button, boxes, text and many more. It can be used without any library or development environment. 3. How many ways to use Material Design Lite? There are two ways to use Material Design Lite: Via Local Installation. Via CDN( Content Delivery Network) Based version. 4. How can we use and in MDL? We can use and in MDL by using following code: 5. What is naming conversion used by MDL? Material Design Lite used BEM ( Block Element Modifier ). It is method used to construct CSS class-name. 6. What are the various CSS classes in Material Design Lite? There are various CSS classes of Material Design Lite: mdl-layout mdl-js-layout mdl-navigation mdl-layout–fixed-header etc. 7. What is Material Design Lite tab? Material Design Lite tab is user interface component. It is used to show multiple screens in a single space in a proper manner. 8. What is Material Design Lite Badges? Material Design Lite Badges is used to emphasize the number of items. It is a component that provides onscreen notification. 9. What is the additional MDL class to create template fixed header and fixed drawer? Fixed header and fixed drawer classes of MDL is: .mdl-layout–fixed-drawer: It is used to make the drawer always visible and open in larger screens. .mdl-layout–fixed-header: It is used to make the header always visible, even in small screens. 10. What are the button classes and their effects? The following button classes and their effects are: Button Classes                                       Description mdl-button                           It is used to set the button as an MDL component. mdl-button–raised             It is used to set raised display effect.. mdl-button–fab                  It is used to set fab ( Circular) effect. mdl-button–colored           It is used to set the color effect.

Material Design Lite Interview Questions 11. What is the spinner class in MDL? In MDL, the spinner classes is: mdl-spinner. Example: Default Spinner Single Color Spinner 12. What are the classes of Material Design Lite Menu? Material Design Lite Menu classes are: mdl-button mdl-js-button mdl-button—icon mdl-menu mdl-menu–top-left mdl-menu–top-right etc. 13. What are the browsers supported by MDL? Material Design Light supports various browsers. Mobile Safari Chrome (Android) Safari Firefox Opera Chrome etc. 14. How can we create raised button and colored FAB? We can create raised button and colored Fav by using following codes: Button add Material Design Lite Questions and Answers Pdf Download Read the full article

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300+ TOP Materialize CSS Interview Questions and Answers

Materialize CSS Framework Interview Questions for freshers experienced :-

1. What is Materialize CSS? Materialize CSS is a CSS framework which contains library files. It is created with CSS, JavaScript and HTML. It helps to create attractive, reliable and functional web pages and web apps. It was released on 8 November 2015. 2. What are the features of Materialize? There are various features of Materialize that are given below: It is in-built responsive design. It is standard CSS with minimal footprint. It includes new versions of common UI controls. such as buttons It provides feature like cards, tabs, navigation bars, toasts, and so on. It requires jQuery, JavaScript library to function properly. It helps to create reusable web component. It is free to use. 3. How can we use Materialize? We can use Materialize in two ways: Local Installation – we can download the materialize.min.css and materialize.min.js files on our local machine and include it in our HTML code. CDN Based Version – we can include the materialize.min.css and materialize.min.js files into our HTML code directly from the Content Delivery Network (CDN). 4. What are the Materialize project setup directories? Materialize project setup directory are given below. MyWebsite/ |--css/ | |--materialize.css | |--fonts/ | |--roboto/ | |--js/ | |--materialize.js | |--index.html 5. What are the utility classes in Materialize? Materialize provides different utility classes that are given below: Color utility classes – Examples: .red, .green, .grey etc. Alignment utility classes – Examples: .valign-wrapper, .left-align, .right-align, .center-align, .left, .right etc. Hiding Content utility classes as per device size – Examples: .hide, .hide-on-small-only, .hide-on-med-only etc. Formatting utility classes – Examples: truncate, hoverable etc. 6. What are the classes to create responsive image and video in Materialize? There are following classes to create responsive and video that are listed table: responsive-img: This class is used to create an responsive image. video-container: It is used to create responsive container. That has embedded videos. responsive-video: It is used to create HTML5 videos responsive. 7. What are the classes of table in Materialize? Materialize provides different types of classes that are given below: Class Name                                   Description None                                 It is used to represents a basic table without any border. stripped                           It is used to display a stripped table. bordered                          It is used to create border in table. highlight                         It is used to highlight the table. centered                          It is used to create all the text in center aligns. responsive-table            It is used to create responsive table 8. What are Badges and its class in Materialize? A badge is a component that provides an onscreen notification. It can be a number or icon. It is used to emphasize the number of items. The following classes of Badges are: badge: It identifies element as an MDL badge component. new: It is used to add a new class to badge component. 9. What is the class of BreadCrumb in Materialize? Materialize provides two classes that are: nav-wrapper: It is used to set the nav component as breadcrumb/nav bar wrapper. breadcrumb: It is used to set the anchor element as breadcrumb. 10. What is Chip in Materialize? Chip is component of Materialize that represent small set of information. Like: a contact, tag etc. Example: The Materialize Chips Example HTML 5 HTML 5close

Materialize CSS Interview Questions 11. What are Collections and its classes of Materialize? Collection is a group of related information items. There are following Collections classes table listed below. Class Name                                                         Description collection                                         It is used to set the div or ul container as collection. collection-item                               It is used to set the a or li item as collection item. active                                                It shows the a or li item as active collection item. with-header                                     It is used to mark the collection to have header. collection-header                           It is a set the a or li item as collection header. avatar                                                It is a set the a or li item as avatar item. dismissible                                       It enables collection items to be swiped away. Works on touch screen devices only. 12. How to we create Pagination in Materialize? In Materialize, we can create Pagination by using pagination class. Its class is used with ul element. Example: chevron_left 1 2 3 4 5 chevron_right 13. What do you mean by Dialogs in materialize? Materialize provides various method to show unremarkable alerts. It also provides a term toast form them. Following is given syntax: Materialize.toast(message, displayLength, className, completeCallback); Where message: It is used to displayed Message to the user. displayLength: Duration of the message after it will disappear. className: Style class to be applied to the toast. For example, ’rounded’. completeCallback: This Callback method to be called once toast is dismissed. 14. What are the Materialize classes of Dropdowns? Materialize provides two dropdown classes that are given below: dropdown-content: It Identifies HTML tag as an materialize dropdown component. data-activates: It is id of the dropdown ul element. Example: Drop Down Demo Inbox12 Unread4 Sent Outbox14 Mail Box Materialize CSS Framework Questions and Answers pdf Download Read the full article

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300+ TOP PhoneGap Interview Questions and Answers

PhoneGap Interview Questions for freshers experienced :-

1. What are the economics involved in buying Phonegap? One does not have to pay to buy Phonegap. It is completely free. 2. Who all can acquire Phonegap? Phonegap can be obtained by any organization or individual who has the facility of an available open-source. 3. Which are the scripts that are compatible with Phonegap? The scripts which are compatible with Phonegap are the codebase CSS, HTML and Java. 4. How is the platform of Phonegap utilized these days? As Phonegap is an open-source platform, it provides the facility to the developers to design and establish the application for mobile devices. 5. For both IOS and Android state the Phonegap user interface. The Phonegap user interface for iOS is an Objective C UIWeb View class. For Android users it is android.webkit.WebView 6. State the main component of the Phonegap plugin? There are two types of files which encompass the main constituent of the Phonegap plugin. They are as follows… the implementation file and the Javascript file. 7. State the function of the implementation file in Phonegap. The primary function of the implementation file in Phonegap is to establish and maintain coordination with the phone’s original features. 8. State which platforms can be supported by Phonegap. Some of the platforms which are supported by Phonegap are as follows…BlackBerry OS, Symbian, Windows, Bada, Tizen, Android. 9. Did previous versions of Phonegap support other platforms also? Yes, the previous versions of Phonegap did support other platforms as well. However this facility was then revoked. 10. What do you understand by Native applications? Applications that are installed locally on a mobile device are known as Native applications.

PhoneGap Interview Questions 11. What do you understand by the term Hybrid Application? A Hybrid application is that application that combines the features and attributes of both native applications and web applications also. 12. What is the full form of CDNs? The full form of CDNs is Content Delivery Networks. 13. What are the advantages of having CDNs in the JQuery? A13. When CDNs are hosted with JQuery the performance of the network is enhanced across the globe. It significantly reduces the time for the websites to be loaded and increases the bandwidth & resolution of the files simultaneously. Thus a win-win situation for all. 14. State the various types of content delivery networks. Some of the various types of content delivery networks are as follows… Microsoft AXJ CDN, Google AXJ API CDN, and JQuery CDN. 15. State the function of the Javascript file in Phonegap. The primary function of the Javascript file in Phonegap is to identify and define the function which can be utilized to acquire the native hook. 16. Phonegap could potentially access which storage options? The storage options which could be potentially utilized by Phonegap are as follows… the web SQL store, the local storage stores, and the memory store. 17. State the function of the media.seekto The primary function is updating the position of the audio file. 18. State some of the APIs of the Phonegap. Some of the APIs of the Phonegap are as follows… vibration, network information, media capture, status bar, screen splash, whitelist, geo-location, file transfer, globalization, contact, camera, battery status, and device motion & orientation. 19. What are some of the disadvantages or limitations of utilizing Phonegap? Some of the disadvantages or limitations of utilizing Phonegap are as follows… the applications running in the background have no support, data processing speed is very slow, any complicated business logic will give rise to unwanted complexity, advanced graphics cannot be accessed and several native APIs are not supported on the platform itself. 20. What is the basic difference between Phonegap and Phonegap build? The framework built for developers is termed Phonegap as it is utilized in building applications for mobile devices. Phonegap build is a cloud-based service. That is the essential difference between them. 21. How can one recreate a Phonegap plugin by themselves? The following steps need to be completed to recreate a Phonegap plugin by oneself… a new directory needs to be developed in the original plugin directory, a Javascript file needs to be designed in the new directory and finally an object C class needs to be made which can carry out the Phonegap command which is made available in the new directory. 22. Why would developers opt for utilizing Phonegap? One of the main reasons why developers are opting to utilize Phonegap is due to the fact that all the primary searches, browsing options, and updated content is controlled by an inbuilt browser. 23. What are the financial advantages of using Phonegap? The financial advantages of utilizing Phonegap are that it increases productivity and reduces cost at the same time. 24. State the functionality of Cordova. An engine that supports the entire Phonegap platform is known as Cordova. 25. How has Phonegap simplified the work of developers? Due to the fact that Phonegap already has built-in technology which is user friendly and free, as a framework, it becomes compatible to almost every kind of mobile application. 26. What do you understand by child browser? Along with the regular Phonegap applications, a plugin which can be easily assimilated into the platform is known as a child browser. 27. What are the advantages of having a child browser? A child browser in place is more of a preventive measure. It helps protect impressionable users by not allowing access to inappropriate websites or even allow them to be searched on the browser. 28. Who originally developed Phonegap? A Vancouver based company in Canada originally developed Phonegap. The company was called Nitobi. 29. In which year was Nitobi acquired by Adobe Corporation? The acquisition of Nitobi by Adobe Corporation was in 2011. 30. State some of the Phonegap events Some of the events of Phonegap are as follows… volumeupbutton, volumedown button, endcall button, startcall button, search button, menu button, battery status, battery low, battery critical, back button, offline, online, resume, pause and device ready. PhoneGap Questions and Answers Pdf Download Read the full article

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300+ TOP PHALCON Interview Questions and Answers

Phalcon Interview Questions for freshers experienced :-

1. What is Phalcon? Phalcon is an open source framework based on the MVC (Model-View-Controller) pattern. It is the combination of PHP and C language. It is developed by Andres Gutierrez and his group of collaborators. 2. Which language supports Phalcon Framework? Phalcon Framework supports two language that are : C & PHP. 3. What is the initial date of Phalcon framework? Initial date of Phylcon framework is: 14 November 2012. 4. What are the features of Phalcon Framework? Phalcon Framework features are: Low overhead MVC & HMVC Pattern Dependency Injection Support for Rest Autoloader Router 5. Explain directory structure of Phalcon Framework ? Phalcon Framework directory structure are given below: App Config Controllers Library Migrations Models Views Cache Public Css files img js temp .htaccess .htaccess .htrouter.php index.html 6. What are database related functions in Phalcon? In Phalcon, database related functions are: find() findFirst() query() findFirstBy etc. 7. What are database engines supported by Phalcon? Phalcon supported PDO_ database engines that are: Phalcon\Db\Adapter\Pdo\Mysql : Mysql Phalcon\Db\Adapter\Pdo\Postgresql : Postgresql Phalcon\Db\Adapter\Pdo\Sqlite : Sqlite 8. What is zephir in Phalcon ? Zephir stands for Ze(nd Engine) Ph(p) I(nt)r(mediate) . It is a high level language. It is used for creation and maintainability of extensions for PHP. It exported to C code that can be compiled and optimized by major C compilers such as gcc/clang/vc++. 9. What are the various type of application events in Phalcon? In Phalcon, there are various tyes of application event : Event Name                                      Triggered boot                                     Executed when the application handles its first request before StartModule         Before initialize a module, only when modules are registered afterStartModule             After initialize a module, only when modules are registered beforeHandleRequest     Before execute the dispatch loop afterHandleRequest        After execute the dispatch loop 10. How can we pass data from conroller to view in Phalcon ? In Phalcon, we can pass data from controller to view by setVar() method. $this->view->setVar("username", $user->username);

PHALCON Interview Questions 11. How can we increase csrf timeout in Phalcon ? In Phalcon, we can increase csrf (Cross-Site Request Forgery) timeout by increase the token time because tokens default uses sessions. 12. Which template engine Phalcon Use ? Phalcon uses a Volt template engine. 13. How can we inject services into a Volt template? We can inject services into a Volt template by using following code: {# Inject the 'flash' service #} {{ flash.output() }} {# Inject the 'security' service #} 14. What is PHQL in Phalcon Framework? In Phalcon Framework, PHQL stands for Phalcon Query Language, It allows to write queries by using a standardized SQL-like language. 15. How can we read, write and delete sessions in Phalcon? In Phalcon, we can read, write and delete sessions by using following code: Creating session: $this->session->set("user-name", "Michael"); Reading or Retriving session: $this->session->get("user-name"); Deleting or Removing session: $this->session->remove("user-name"); 17. Does Phalcon support multiple web server? Yes, Phalcon supports multiple web server. 18. What are the features of a controller? There are following features of a controller. It helps to update the model’s state by sending command to the model. It is also used to send command to the associated view. It acts as an intermediary between the model and the view. 19. How many type of views in Phalcon? In Phalcon, there are two type of views: .Volt .Phtml 20. What are the differences between .volt and .phtml files? There are various differences between .volt and .phtml that are given below in table: .volt                                                                                                                         .phtml It is used when the template engine set up.                    It is used when the template engine is PHP itself. It can be used as a stand-alone component.                   It cannot be used as a stand-alone component. Volt views are compiled to PHP code.                              It includes PHP volt so there is no need of compilation in Phalcon framework. 21. What are the different type of HTTP methods? There are various different type of HTTP methods: GET : It is used to retrieve and search data. POST: It is used to add data. PUT : It is used to update data. DELETE: It is used to delete data. 22. How can we declare variable in Phalcon? In Phalcon, we can declare variable by using set. Example: 1. {% set fruits = %} // array declare 2. {% set name = "John Kennedy" %} // string declare 23. Does Phalcon support multiple Databases? Yes, Phalcon supports multiple Databases. 24. at is PHQL in Phalcon? In Phalcon, PHQL stands for Phalcon Query Language. It is a high-level SQL that standardize SQL queries for the database system. Example: // Instantiate the Query $query = new Query( "SELECT * FROM Users", $this->getDI() ); // Execute the query returning a result if any $cars = $query->execute(); 25. What are cookies and its types? Cookies stores small text files in browser. It is known as browser cookies. Types of cookies are: Session cookies Persistent cookies 26. How can we create a session with a name and value in Phalcon? The following code is used to create a session with a name and value in Phalcon. Read the full article

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300+ TOP Pure.CSS Interview Questions and Answers

Pure.CSS Interview Questions for freshers experienced :-

1. What is Pure.CSS? Pure.CSS is a Cascading Style Sheet (CSS) framework developed by Yahoo. It is used to make website faster, beautiful and responsive. 2. Which are the important features of Pure.CSS? It is free. It has in-built responsive designing. It uses satandard CSS with minimal footprint. It is a collection of small, responsive CSS modules. It supports shadow and bold colors. The colors and shades remain uniform across various platforms and devices. 3. What do you mean by Standard CSS? Standard CSS is very easy to lean and there is no dependency on any external JavaScript library such as jQuery. Standard CSS is used by Pure.CSS. 4. How to use Pure.CSS? There are two methods to use Pure.CSS: Local Installation: You can download the pure.css file on your system and include it in your HTML code. CDN Based Version: You can include the pure.css file into your HTML code directly from the Content Delivery Network (CDN). 5. What do you understand by Pure.CSS Responsive Design? PURE.CSS provides several special classes to create a responsive design: .pure-u-*: It is used to set the container to occupy required space on any device. .pure-u-sm-*: It is used to set the container to occupy required space on a devices with width ? 568px. .pure-u-md-*: It is used to set the container to occupy required space on a devices with width ? 768px. .pure-u-lg-*: It is used to set the container to occupy required space on a devices with width ? 1024px. .pure-u-xl-*: It is used to set the container to occupy required space on a devices with width ? 1280px. 6. What is Pure.CSS grids? PURE.CSS provides concept of Pure Grid with two types of classes: pure-g: A grid class pure-u-*: A unit class 7. How do you Pure.CSS grid? Following are the rules to use Pure.CSS Grids: Widths of Units are in fractions. For example, pure-u-1-2 represents 1/2 or 50% width, pure-u-2-5 represents 2/5 or 40% width and so on. Children of Pure Grid (element with pure-g class) must be using pure-u or pure-u-* classnames. All content should be a part of a grid unit to be rendered properly. 8. What do you mean by the term extensible in Pure.CSS? Pure is elegant, simple, and lightweight. It is very easy to work with. The biggest advantage of using Pure CSS is it is built to be extensible. You can simply add a few styles in your own CSS and change the look to your website. 9. What is local installation of Pure.CSS? Local installation is a process of downloading pure-min.css file in a directory of your website, e.g. /css and then use the CSS file in your HTML page. Example: The PURE.CSS Example .grids-example { background: rgb(250, 250, 250); margin: 2em auto; border-top: 1px solid yellow; border-bottom: 1px solid red; font-family: Consolas, 'Liberation Mono', Courier, monospace; text-align: center; } First Column Second Column Third Column 10. How do you use CDN based version of Pure.CSS? You can include the Pure.CSS file into your HTML code directly from the Content Delivery Network (CDN). yui.yahooapis.com provides content for the latest version. Example: The PURE.CSS Example .grids-example { background: rgb(250, 250, 250); margin: 2em auto; border-top: 1px solid yellow; border-bottom: 1px solid red; font-family: Consolas, 'Liberation Mono', Courier, monospace; text-align: center; } First Column Second Column Third Column

Pure.CSS Interview Questions 11. What is Pure.CSS Menus? There are two types of menus in Pure.CSS: Vertical menu Horizontal menu Pure.CSS provides vertical menus by default. You can change the vertical menu to horizontal menu by adding the class name "pure-menu-horizontal". 12. What is Pure.CSS form? Pure.CSS has a very easy and responsive CSS to design a form. You can create different types of forms using Pure.CSS. Following is a list of some classnames: pure-form: It specifies a compact inline form. pure-form-stacked: It represents a stacked form with input elements below the labels. To be used with pure-form. pure-form-aligned: It represents an aligned form with input elements below the labels. To be used with pure-form. pure-input-rounded: It is used to display a form control with rounded corners pure-button: It is used to beautify a button. pure-checkbox: It is used to beautify a checkbox. pure-radio: It is used to beautify a radio. 13. What is Responsive Design in Pure CSS? Responsive design is defined as following: Pure has in-built responsive design. It resizes automatically as per the device size. Pure has 12 columns. Mobile-first fluid supports responsive classes for small, large, and medium screen sizes. Pure classes enable website to fit any screen size. The websites is fully compatible with PC, tablets and mobiledevices. 14. What is Pure CSS button? Pure CSS provides attractive and responsive buttons. Following are the button classes. Pure-button: It represents a standard button. Pure-button-disabled: Itrepresents a disabled button and it is used along with pure-button. pure-button-active: It represents a pressed button and it is used along with along with pure-button. 15. What are the browsers supported by Pure CSS? Pure CSS supports following updated browsers that are given below: IE 8+ Latest Stable: Firefox, Chrome and Safari 16. What are the icons Libraries supported by Pure CSS? Pure CSS supports following icon libraries that are: Font Awesome Icons Google Material Icons Bootstrap Icons Pure.CSS Questions and Answers Pdf Download Read the full article

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300+ TOP ReactJS Interview Questions and Answers

ReactJS Interview Questions for freshers experienced :-

1. What is ReactJS? It is a front-end library which is used for handling the view layer for web and mobile apps. It is also used to create reusable UI components. 2. What are the features of ReactJS? Features of ReactJS are: JSX: Stands for JavaScript syntax extension. It isn't necessary to use JSX in ReactJS. Components: It is all about components Unidirectional data flow and Flux: React implements one-way data flow. License: Licensed under the Facebook Inc. 3. What is setState() method? setState() method: It is used for updating the state of the component. 4. What is forceUpdate() method? forceUpdate() method: It is used for updating the component manually. 5. What are the Component Life Cycle methods of ReactJS? Component Life Cycle methods of ReactJS are: componentWillMount componentDidMount componentWillReceiveProps shouldComponentUpdate componentWillUpdate componentDidUpdate componentWillUnmount 6. What is Flux? It is a programming concept where data is unidirectional. Flux Elements: Actions Dispatcher Store View 7. Can browsers read JSX? No, browsers can’t read JSX (JSX code must be compiled by JSX Compiler which is used to translate the JSX into JavaScript). 8. What are the types of events used in ReactJS? Types of events used in ReactJS are: Form Events onChange onInput onSubmit Mouse Events onClick onDoubleClick onMouseMove onMouseOver Touch Events onTouchCancel onTouchEnd onTouchMove onTouchStart 9. Who is the author of ReactJS? Jordan Walke is the author of ReactJS. 10. Does ReactJS uses HTMl? No, ReactJS uses JSX.

ReactJS Interview Questions 11. How to install React Router in ReactJS? The following code is used to install react-router: C:\Users\username\Desktop\reactApp>npm install react-router 12. What is ReactDOM.findDOMNode() method? ReactDOM.findDOMNode() method is used for DOM manipulation. 13. What is React CSS Transitions? React CSS Transition: This is a react add-on which is used for creating basic CSS transitions and animations. 14. What is HOC in ReactJS? HOC stands for Higher Order Component. It is a function that takes one component and returns another component that wraps the original one. 15. What are the advantages of ReactJS? Advantages of ReactJS are: Uses virtual DOM Improves SEO Performance It Can also be used with other framework It can be used on client and server side Data patterns and Component improve readability ReactJS Questions and Answers Pdf Download Read the full article

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300+ TOP RequireJS Interview Questions and Answers

RequireJS Interview Questions for freshers experienced :-

1. What is RequireJs? RequireJs is a open source JavaScript library which is used to maintain dependencies between JavaScript files and modular programming. 2. What are the features of RequireJs? Following are the key feature of RequireJs: It maintains dependency between JavaScript and programming code. It improves the speed of and quality of code. It also supports jQuerry without any conflict. It reduces code complexity in large applications. 3. What is the project structure of RequireJs? To set up our RequireJs project strucrure, we need to download the latest version of ReuireJs. After downloading, we require to include require.js file in our libs folder. 4. What is module in RequireJs? Module is independent unit of program which make easy maintenance and reusability of code. In RequireJs we talk about JavaScript module. 5. What is data-main attribute? The data-main attribute is a special attribute that require.js will check to start script loading. The data-main set to the base URL for all the scripts. 6. What is AMD module? AMD stands for Asynchronous Module Definition. This specifies a mechanism for defining modules and their dependencies in such a way that they can be loaded asynchronously and in the right order. 7. How to use RequireJs with Node? Or dose RequireJs support Node? We use Node with RequireJs by using Node adapter. RequireJs load only those modules of Node which are on the local disk. Node adapter can install by two different ways: By using command: npm install requires. By downloading file: * Downloading r.js file and keeping it in our project folder. * Getting source from r.js repository or generate r.js through “node dist.js”. 8. How to use RequireJs with jQuery? ReqireJs uses jQuery as another dependency. jQuery is named as ‘jquery’ all in lower case and register itself as the global variables “$” and “jQuery”. require(, function($){ } 9. How to use RequireJs with Dojo? Dojo is AMD (Asynchronous Module Definition) based module. Dojo is used with RequireJs by using Dojo loader APIs. Dojo loader includes two types of APIs. Asynchronous Module Definition (AMD) API. Legacy dojo API. 10. How to use RequireJs with CommonJs? CommonJs are used with RequireJs by converting its module in RequireJs format. Conversion can be done through manual and by using conversion tool. Manual conversion: define(function(require, exports, module) { //Put CommonJS module content here }); Using conversion tool: r.js project tool is used, which is present built in r.js to convert CommonJs module. node r.js -convert path/to/commonjs/modules/ path/to/output

RequireJS Interview Questions 11. What is the use of define() function in RequireJs? The define() function is used to load and execute module. It takes two optional parameters (module id and an array of required module) and one required parameter. define("module_id",, function(module1,module2) { } ); 12. What is the use of require() in RequireJs? The require() function is used to load required dependency without creation of module. require(, function ($) { }); 13. What is the use of config() in RequireJs? The config() function is used to configure the RequireJs runtime functionality. If we want to change the default configuration of RequireJs with our own configuration, we need to use requirejs.config() function with configuration details. require.config({ baseUrl: 'scripts/app', paths: { }, shim: { } }); 14. What is the role of Optimizer or Optimize? Optimize is a built process where the developed project is deployed to end user. While optimize we combines all scripts files and css files together and minify them. 15. What are the plugins in RequireJs? RequireJs’s plugin is used to load various types of resources as dependencies. Following are the plugins available in RequireJs: text: This plugin handles loading text based resources like HTML. domReady: It load such resource which tries to interact DOM cs (CoffeeScript): It load files written in CoffeeScript. i18n : It load string bundle used in internationalization (i18n) made up of different language. RequireJS Questions and Answers Pdf Download Read the full article