10+ Interview Questions and Answers

To make a class immutable, ensure that its state cannot be changed after instantiation.

• Make all fields private and final

• Do not provide setter methods

• Ensure that any mutable objects within the class are also made immutable

Singleton design pattern ensures a class has only one instance and provides a global point of access to it.

• Create a private static instance of the class

• Provide a public static method to access the instance

• Ensure the constructor is private to prevent instantiation of multiple objects

Angular Interceptor is a middleware that intercepts HTTP requests and responses.

• It can be used to add headers, modify requests, handle errors, and more.

• Interceptors can be global or specific to a certain request.

• Example use cases include adding authentication tokens to requests or logging responses.

• Interceptors are implemented using the HttpInterceptor interface in Angular.

Cyclomatic complexity is a software metric used to measure the complexity of a program.

• It measures the number of linearly independent paths through a program's source code.

• It helps in identifying complex code that may be difficult to maintain or test.

• A higher cyclomatic complexity indicates a higher risk of errors and bugs in the code.

• It is calculated using the formula: E - N + 2P, where E is the number of edges, N is the number of nodes, and P is the number of connected comp...read more

Microservice C# is a software architecture pattern where an application is built as a collection of small, independent services.

• Each service is responsible for a specific task or feature

• Services communicate with each other through APIs

• Allows for scalability, flexibility, and easier maintenance

• Examples include Netflix, Amazon, and Uber

Address concerns with empathy, provide education on security risks, offer solutions, collaborate on finding a compromise.

• Listen to their concerns and understand their perspective.

• Educate them on the potential security risks and consequences of not addressing the issues.

• Offer alternative solutions or workarounds that meet both security and development needs.

• Collaborate with the developers to find a compromise that ensures security without hindering productivity.

2 sum problem in Java involves finding two numbers in an array that add up to a specific target value.

• Use a HashMap to store the difference between the target value and each element in the array.

• Iterate through the array and check if the current element's complement exists in the HashMap.

• Return the indices of the two numbers that add up to the target value.

Find duplicates in a string and count repeated letters

• Iterate through each character in the string

• Use a hash map to store the count of each character

• If a character is already present in the hash map, increment its count

• After iterating through the string, filter the hash map to get the duplicate characters and their counts

Fraud in onboarding journey can be detected through various methods such as background checks, verification processes, and monitoring of suspicious activities.

• Implement thorough background checks on new employees or clients to verify their identity and credentials.

• Utilize verification processes such as document verification, reference checks, and identity verification to ensure the authenticity of information provided.

• Monitor for any suspicious activities such as unusual fina...read more

Integrating Selenium framework with Jenkins involves setting up Jenkins job to run Selenium tests.

• Install Jenkins on the server

• Install necessary plugins like Selenium plugin

• Create a Jenkins job for running Selenium tests

• Configure the job to execute Selenium tests using the Selenium framework

• Set up build triggers and post-build actions as needed

Implementing SAST in CI/CD requires careful planning and integration to ensure security vulnerabilities are caught early in the development process.

• Integrate SAST tools directly into the CI/CD pipeline to scan code automatically during the build process.

• Set up alerts and notifications for developers to address security findings promptly.

• Regularly update SAST tools and configurations to keep up with new vulnerabilities and best practices.

• Collaborate with developers to prioriti...read more

Underwriting involves assessing risk and determining the terms of insurance policies.

• Underwriters evaluate the risk associated with insuring a particular individual or entity.

• They analyze factors such as age, health, occupation, and lifestyle to determine the likelihood of a claim.

• Underwriters also set the premium amount and coverage limits based on the risk assessment.

• They may use actuarial tables, statistical models, and historical data to make informed decisions.

• Underwriti...read more