Coding interview preparation
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How to GraphQl - Common Questions

Is GraphQL a Database Technology?
Is GraphQL only for React / Javascript Developers?
How to do Server-side Caching?
How to do Authentication and Authorization?
How to do Error Handling?
Does GraphQL Support Offline Usage?

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Which of the following number object function returns the value of the number?
Anonymous Quiz
21%
toString()
62%
valueOf()
7%
toLocaleString()
10%
toPrecision()
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16 Essential HTML5 Interview Questions

Toptal sourced essential questions that the best HTML5 developers and engineers can answer. Driven from our community, we encourage experts to submit questions and offer feedback.

1-Give a simple implementation of the <video> tag to embed a video stored at http://www.example.com/amazing_video.mp4. Give the video a width of 640 pixels by 360 pixels. Provide the user with controls.
2-What were some of the key goals and motivations for the HTML5 specification?
3-What are some of the key new features in HTML5?
4-What are โ€œweb workersโ€?
5-How do you indicate the character set being used by an HTML5 document? How does this differ from older HTML standards?

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Which of the following is not an OOPS concept in Java?
Anonymous Quiz
4%
Polymorphism
5%
Inheritance
86%
Compilation
4%
Encapsulation
45 Ionic Interview Questions

A list of frequently asked Ionic Interview Questions and Answers are given below.
1) What is the Ionic Framework?
2) Who created the Ionic Framework?
3) How do you install an Ionic Framework?
4) What is the Ionic CLI?
5) What are the advantages of an Ionic Framework?

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The statement used for printing \n on the screen is:
Anonymous Quiz
8%
printf("");
49%
printf('\n');
37%
printf("\\n");
7%
printf("n\");
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20 iOS Developer Interview Questions and Answers for getting you ready for your interview

The big day is coming up. Whether itโ€™s a phone, online or in person interview it is always a little bit stressful. So, to ease the stress you did some prep work- completed the homework on the company you are interviewing with, stalked the hiring manager and half of the engineering team at the company of your choice on linkedin & github, you brushed up on some of the skills and knowledge you havenโ€™t used in a while- you are ready to go.

But following US Navy Seals motto โ€œTwo is one and one is noneโ€ letโ€™s go through another quick refresher to help you ace that iOS interview. So letโ€™s get right into it!
Letโ€™s start with some of the basic questions that I hope you are already ready for. They might seem obvious, but you would be shocked how many engineers failed miserably at them during the 12 years I have been doing technical interviews.

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Which of the following is not a type of Constructor in C++?
Anonymous Quiz
6%
Default constructor
11%
Parameterized constructor
15%
Copy constructor
68%
Friend constructor
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Java versions and their features
The data structure required to check whether an expression contains a balanced parenthesis is?
Anonymous Quiz
46%
Stack
14%
Queue
21%
Array
19%
Tree
150 Java Interview Questions and Answers โ€“ The ULTIMATE List

Our Java Interview Questions and Answers collection is all about different types of questions that can be used in a Java interview, in order for the employer to test your skills in Java and object-oriented programming in general.

In the following sections we will discuss Java Interview Questions about object-oriented programming and its characteristics, general questions regarding Java and its functionality, collections in Java, garbage collectors, exception handling, Java applets, Swing, JDBC, Remote Method Invocation (RMI), Servlets and JSP.

Letโ€™s goโ€ฆ!

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Which of the following function of the String object returns the character in the string starting at the specified position via the specified number of characters?
Anonymous Quiz
27%
slice()
15%
split()
50%
substr()
8%
search()
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10 Interview Questions Every JavaScript Developer Should Know

In the years since I wrote this article, a lot has changed. When I wrote it, lots of developers were coming to JavaScript from languages like Java and C++, lacking any understanding of how objects work in JavaScript, and trying to apply obsolete patterns, such as deeply layered inheritance hierarchies.

Thanks in part to warnings from influential software developers and framework authors (particularly the authors of React, who wisely listened to the warnings and encouraged better alternatives such as higher order components and React hooks for idiomatic React), the trend of overusing class inheritance in JavaScript has mostly died. And itโ€™s missed by nobody.

In recent job interviews, hereโ€™s what I do

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17 Essential jQuery Interview Questions From Toptal

Toptal sourced essential questions that the best jQuery developers and engineers can answer. Driven from our community, we encourage experts to submit questions and offer feedback.

1-What selector would I use to query for all elements with an ID that ends with a particular string? Also, how would I modify the selector to retrieve only <div> elements whose IDs end with that same string? Provide an example.

2-Whatโ€™s the deal with the $ in jQuery? What is it and what does it mean?

3-Write code in jQuery to animate the #expander div, expanding it from 100 x 100 pixels to 200 x 200 pixels over the course of three seconds.

4-What is method chaining in jQuery? Provide an example.

5-What is the difference between jQuery.get() and jQuery.ajax()?

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Which of the following are declarations?
1. float square (float x){?}
2. double pow(double, double); 3. extern int x;
Anonymous Quiz
14%
1
45%
1 and 3
25%
2
16%
1 and 2
Latest Gulp js interview questions

Gulp is gaining popularity and it has become part of every web application these days. In this post, find list of latest and updated gulp js interview questions and their answers for freshers as well as experienced users. These interview questions will help you to prepare for the interviews, for quick revision and provide strength to your technical skills.

Q1. What is Gulp?
Q2. Is gulp based on node.js?
Q3. Why to use gulp?
Q4. How do you install gulp?
Q5. How do you setup/configure gulp?

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Which of the following approach is used by C++?
Anonymous Quiz
23%
Left-right
11%
Right-left
31%
Bottom-up
35%
Top-down
20 questions you might be asked about KnockoutJS in an interview for both freshers and experienced developers

KnockoutJS is being used more frequently in projects as a lightweight tool to assist quick development in the browser, especially where ViewModels and arrays are involved. Knockout is quick to learn and while it doesnโ€™t have anywhere near the functionality of say AngularJS, it does provide a powerful mechanism for working with data and vastly reduces the amount of code needed to implement a robust modern, client-side solution. Unlike Angular, which encompasses many concepts including data-binding, integrated testing, view management, etc., Knockout only promises one thing โ€“ highly efficient data-binding, but it does this extremely well indeed. Due to its increasing popularity, questions about it are being asked at interviews โ€“ this is a list of some of the more common questions I have seen discussed in preparing interviews. If you understand these concepts, you will be well on your way to putting together a solid Knockout solution.

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What data structure would you most likely see in non recursive implementation of a recursive algorithm?
Anonymous Quiz
34%
Linked List
34%
Stack
12%
Queue
20%
Tree
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