ZS Angular Frontend Developer Interview Questions and Answers

Q1. What is display properties?
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Q2. What is dependency Injection?
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1 coding question and MCQ's

Q1. WAP to replace vowels position with each other sequence wise, for example:value,wood look like :velua.
Ans. 
A program to replace vowels in a string with each other in sequence.
• Create a function that takes a string as input

• Iterate through the string and replace each vowel with the next vowel in sequence

• Return the modified string
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Q2. Basic angular question
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Q1. About projects and my contributions
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Q2. About methodology and client
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Q1. What is lazy loading?
Ans. 
Lazy loading in Angular is a technique used to load modules only when they are needed, improving performance by reducing initial load time.
• Lazy loading helps in splitting the application into multiple bundles which are loaded on demand.

• It is achieved by using the loadChildren property in the route configuration.

• Lazy loading is commonly used for optimizing large applications with multiple modules.

• Example: loadChildren: ...read more
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Q2. How is security implemented ?
Ans. 
Security in Angular applications is implemented through various mechanisms such as HTTPS, input validation, authentication, authorization, and secure coding practices.
• Use HTTPS to encrypt data transmitted between the client and server.

• Implement input validation to prevent malicious input from users.

• Utilize authentication mechanisms like JWT tokens or OAuth for user identity verification.

• Implement authorization to contr...read more
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Q1. Difference between position absolute and relative in css
Ans. 
Position absolute removes element from normal flow, relative keeps element in flow but can be positioned.
• Position absolute removes element from normal flow, allowing it to be positioned relative to its closest positioned ancestor.

• Position relative keeps element in normal flow but allows it to be positioned relative to its normal position.

• Position absolute elements are not affected by other elements and can overlap, whi...read more
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Q1. Deep questions about angular and javascript basics
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Q1. What is display properties?
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Q2. What is dependency Injection?
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Q1. How would you share data between two unrelated angular components
Ans. 
Using a shared service to communicate data between unrelated components in Angular.
• Create a shared service with a BehaviorSubject to store and emit data

• Inject the shared service into both components that need to share data

• Subscribe to the BehaviorSubject in each component to receive updates
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Q2. How do we do lazy loading
Ans. 
Lazy loading in Angular allows for loading modules only when they are needed, improving performance.
• Lazy loading is achieved by using the loadChildren property in the route configuration.

• Modules are loaded asynchronously when the user navigates to a route that requires them.

• Lazy loading helps reduce the initial bundle size and improve the app's loading time.

• Example: { path: 'admin', loadChildren: () => import('./admin/
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Q3. How would you take care of XSS vulnerability
Ans. 
Prevent XSS vulnerability by sanitizing user input, using Angular's built-in security features, and implementing Content Security Policy.
• Sanitize user input by using Angular's DomSanitizer to prevent execution of malicious scripts

• Use Angular's built-in security features like SafeValue and SafeHtml to securely render user input

• Implement Content Security Policy (CSP) to restrict the sources from which scripts can be load...read more
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Q4. How do you take data from more than one service at a time in a component
Ans. 
Use observables and combineLatest operator to fetch data from multiple services in a component
• Create observables for each service call

• Use combineLatest operator to combine the observables and fetch data from all services at once

• Subscribe to the combined observable to get the data
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1 coding question and MCQ's

Q1. WAP to replace vowels position with each other sequence wise, for example:value,wood look like :velua.
Ans. 
A program to replace vowels in a string with each other in sequence.
• Create a function that takes a string as input

• Iterate through the string and replace each vowel with the next vowel in sequence

• Return the modified string
Answered by AI
Add your answer
Q2. Basic angular question
Add your answer

Q1. About projects and my contributions
Add your answer
Q2. About methodology and client
Add your answer

Q1. What is lazy loading?
Ans. 
Lazy loading in Angular is a technique used to load modules only when they are needed, improving performance by reducing initial load time.
• Lazy loading helps in splitting the application into multiple bundles which are loaded on demand.

• It is achieved by using the loadChildren property in the route configuration.

• Lazy loading is commonly used for optimizing large applications with multiple modules.

• Example: loadChildren: ...read more
Answered by AI
Add your answer
Q2. How is security implemented ?
Ans. 
Security in Angular applications is implemented through various mechanisms such as HTTPS, input validation, authentication, authorization, and secure coding practices.
• Use HTTPS to encrypt data transmitted between the client and server.

• Implement input validation to prevent malicious input from users.

• Utilize authentication mechanisms like JWT tokens or OAuth for user identity verification.

• Implement authorization to contr...read more
Answered by AI
Add your answer