Infosys Team Member/Team Leader Interview Questions and Answers

Dynamic form is a form that can be modified at runtime. FormArray is an array of form controls.

• Dynamic form allows adding or removing form fields based on user input or other conditions.

• FormArray is used to manage an array of form controls.

• Example: A form where users can add multiple phone numbers or email addresses.

• Example: A form where users can add or remove items from a shopping cart.

To address client complaint of slow application post-deployment, I would follow a systematic approach to identify and resolve the issue while keeping the client informed.

• First, I would gather more information from the client about the specific areas of the application that are slow and the frequency of the issue.

• Next, I would review the application logs to identify any errors or performance issues.

• I would also check th...read more

Data can be passed between unrelated components using various techniques like events, state management, or context APIs.

• Use a global state management library (e.g., Redux) to store shared data.

• Implement event-driven architecture where components emit and listen for events.

• Utilize context APIs in frameworks like React to provide data to components without direct relationships.

• Leverage local storage or session storage fo...read more

Observable is a pattern for handling asynchronous data streams. Promises are a way to handle asynchronous operations.

• Observables allow for subscribing to a stream of data and reacting to each event as it comes in.

• Promises represent a value that may not be available yet, but will be resolved at some point in the future.

• async/await is a way to write asynchronous code that looks synchronous, by pausing execution until a p...read more

Yes, script tags can be used in Angular

• Script tags can be used to load external scripts in Angular

• Angular also provides a way to load scripts dynamically using the ScriptService

• However, it is recommended to use Angular's built-in mechanisms for loading scripts

No, it will not get rendered on UI without a template.

• A component needs a template to be rendered on UI.

• Without a template, the component will not be visible on the UI.

• The template defines the structure and content of the component.

• If there is no template, the component will not have any visual representation.

JAVA 8 handles collisions using separate chaining and open addressing.

• Separate chaining uses linked lists to store multiple values at the same index in the hash table.

• Open addressing uses a probing sequence to find the next available slot in the hash table.

• JAVA 8 also introduced the ConcurrentHashMap class which uses a combination of both techniques for better performance.

• Example: HashMap map = new Has...read more

Garbage collection is an automatic memory management process in Java.

• Garbage collection is the process of freeing up memory by removing objects that are no longer in use.

• Java has a built-in garbage collector that runs automatically in the background.

• The garbage collector uses different algorithms to determine which objects are no longer in use and can be removed.

• Some of the commonly used garbage collection algorithms i...read more