Interview Questions and Answers for 'L' | Search Interview Question

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Q61. What are the building blocks of Angular Apps ?

Angular

Ans. modules, components, templates, metadata, data binding, directives, services, and dependency injection

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Q62. What will you do if your build fails and you need to fix it in an hour ?

Build Management

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Q63. Have you ever done audit logging using log4j ?

Log4j

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Q64. What is the different between collection and Stream Api ?

Core Java

Ans. data under collection are actually stored in memory so that they can be retrieved when needed whereas data in streams are not stored and hence we need to construct it again when needed.

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Q65. How to manage transactions in distributed applications?

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Q66. What do you think of TypeScript?

TypeScript

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Q67. What are the advantages of using TypeScript over Javascript ?

TypeScript

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Q68. How to debug multi server deployed application ?

Debugging

Ans. Choose the server from the list of defined servers under J2EE Server.
Choose the project to debug.
Click Apply to save changes.
Click Debug to start the server and run the application.

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Q69. What is the difference between field and property in Typescript ?

TypeScript

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Q70. Explain Servlet config

Java EE

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Q71. Explain your current project architecture.

Architecture

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Q72. Interface vs Abstraction

Core Java

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Q73. What is arrow function in Typescript ?

TypeScript

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Q74. What is HMR or Hot Module Replacement in Angular ?

Angular JS

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Q75. What is the difference between Angular JS (version 1x) and Angular (version 2x) ?

Angular

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Q76. Difference between Let and Var in Javascript ?

JavaScript

Ans. Var scopes the variable to the nearest function whereas Let scopes the variable to nearest block.

For example -

function printNumbers() {
for(var i = 1; i < 3: i++){
console.log(i);
}

console.log(i); // works fine and will print 3 as i has a function scope and not local loop scope
}

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Q77. Which set of technologies do you use in your company ?

General

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Q78. Write a Program to find out negative numbers in a list.

Design

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Q79. How do you evaluate a product while migrating to open source ?

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Q80. How can we create an arraylist of unique values ?

Core Java

Ans. We can put the value in a set to enforce uniqueness and then dum those value into an arraylist.

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Q81. Difference between XSS and CSRF ?

Security

Ans. SRF attack requires an authenticated session, whereas an XSS attack doesn’t.
XSS doesn’t require any user interaction.CSRF is restricted to the actions the victim can perform.
XSS requires a vulnerability to happen, whereas CSRF relies on tricking the user to click a link or access a page.
CSRF can only send an HTTP request but cannot view the response. XSS can send and receive HTTP requests and responses to extract the required data.

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Q82. Have you ever heard about csrf attacks ?

Security

Ans. Yes, Cross-Site Request Forgery (CSRF) is an attack that forces an end user to execute unwanted actions on a web application in which they're currently authenticated.

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Q83. Can the value of a static variable be changed ?

Core Java

Ans. Yes the value of a static variable can be changed. It's the final keyword that restrict the modification of value not static.

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Q84. If you see bad code, would you rewrite it?

General

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Q85. Give an example of a time when someone provided critical feedback on your work

General

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Q86. How you debug and troubleshoot slowness with a REST call?

Rest

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Q87. When you build an angular application, what type of file it creates which we can deploy?

Angular JS

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Q88. What are the advantages and disadvantages of Lambda Expression ?

Core Java

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Q89. What are your goals: personal, business, financial

General

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Q90. How would you design the database schema for an event?

Database

Ans. Broad question, but if the company need velocity, think about use a NO SQL instead of regular SQL databases.

Also prefers materialized views instead of joins to fetch data quickly.

Regarding the database design, there are very good design tools for professional database (to develop proper indexes and good database design) one of the best is QuickDBD

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