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

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Q3001. What is the selector and template in a component ?

Ans. Selector specifies the name which is to be used to refer to the component whereas template specifies the html that needs to be rendered.

So selector specifies the reference name whereas template specifies the template or html to be rendered.

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Q3002. What are the different ways we can specify the selector for the component ?

Angular

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Q3003. How dependency injection in angular helps with loose coupling in angular ?

Angular

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Q3004. What are the spec.ts files in angular ?

Angular

Ans. The spec files are unit tests for your source files. The convention for Angular applications is to have a .spec.ts file for each .ts file. They are run using the Jasmine javascript test framework through the Karma test runner

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Q3005. What are abservables in angular ?

Angular

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Q3006. what is strict mode in javascript ? How is it used ?

Javascript

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Q3007. Can we apply strict mode to a function ?

Angular

Ans. Yes

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Q3008. Design Parking Lot.

Design

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Q3009. how did you handled your clients requests in your project ?

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Q3010. String processing in Java

Core Java

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Q3011. What is the main difference between unique key and primary key ?

Database

Ans. Primary key will not accept NULL values whereas Unique key can accept one NULL value.

A table can have only primary key whereas there can be multiple unique key on a table.

A Clustered index automatically created when a primary key is defined whereas Unique key generates the non-clustered index.

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Q3012. What are various design frameworks for Banking profile ?

Design

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Q3013. Which file holds the dependent package information ?

Angular

Ans. package.json

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Q3014. Have you ever faced any problem due to package version incompatibility in angular ? How did you fix it ?

Angular

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Q3015. Difference between ViewChild and ContentChild.

Angular

Ans. Any directive, component, and element which is part of component template is accessed as ViewChild. Whereas, any element or component which is projected inside is accessed as ContentChild.

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Q3016. Which change detection strategy do you use in your application and Why ?

Angular

Ans. We use ChangeDetectionStrategy.Push

As the application grows bigger , The default change detection strategy could become a performance overhead and hence should be avoided.

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Q3017. What are the different conditions that triggers view update in case of push ChangeDetectionStrategy ?

Angular

Ans. 1. Any change in Input
2. Any even originating from the component or it's child components
3. Explicit trigger

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Q3018. What is a component decorator ?

Angular

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Q3019. What is interpolation in Angular ?

Angular

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Q3020. Can we use interpolation with all data types ?

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Q3021. What are the limitations with using interpolation ? Why do we need property binding ?

Ans. Interpolation can only work with String types and hence we need property binding while working with other data types.

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Q3022. Have you ever had any problem with asynchronous programming due to race condition ?

Angular

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Q3023. Have you ever used sessionStorage ? What is the better way to store session information - sessionStorage or session cookie ?

Session Management

Ans. Session Cookie, because session storage can be accessed from XSS (Cross site Scripting) attacks but cookies (if set with "HttpOnly" and "Secure" flags) are more safer against these attacks.

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Q3024. What are the benefits of using UI framework like Angular , View js etc instead of plain vanilla js and html ?

Javascript

Ans. These frameworks facilitates easier product development and enhancement and maintainability by having separation of concerns ( using oops ) and helps in development of reusable libraries / components. So in nutshell , they make development and maintenance of large scale application easier.

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Q3025. Explain method overridding.

Core Java

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Q3026. What are the libraries and tools for cloud storage on GCP ?

Google Cloud Platform (GCP)

Ans. Console - GUI Interface
gsutil - Command Line Interface
Rest API - Using JSON or XML API

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Q3027. What do you know about Google Compute Engine ?

Google Cloud Platform (GCP)

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Q3028. How are the Google Compute Engine and Google App Engine related ?

Google Cloud Platform (GCP)

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Q3029. How does the pricing model work in GCP cloud ?

Google Cloud Platform (GCP)

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Q3030. What are the different methods for the authentication of Google Compute Engine API ?

Google Cloud Platform (GCP)

Ans. MS active directory concept and in GCP its Cloud Identity

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