AVAYA Technical Specialist Interview Questions and Answers

Transactions in Spring Boot help manage database operations as a single unit of work.

• Transactions ensure ACID properties (Atomicity, Consistency, Isolation, Durability) for database operations.

• Use @Transactional annotation to mark a method as transactional.

• Transactions can be managed programmatically using TransactionTemplate.

• Rollback can be triggered manually in case of exceptions.

• Spring Boot supports both declarative

To run an application on a bare board, you need to install the necessary software and configure the hardware.

• Install an operating system on the bare board

• Compile and load the application code onto the board

• Configure any necessary drivers or libraries

• Ensure the board has sufficient resources (memory, storage, etc.) for the application

• Test and debug the application on the bare board

Load balancers distribute incoming network traffic across multiple servers to ensure no single server is overwhelmed.

• Load balancers monitor the health of servers and distribute traffic based on predefined algorithms.

• They can be hardware-based or software-based.

• Common algorithms used by load balancers include round-robin, least connections, and IP hash.

• Load balancers can improve reliability and scalability of a website ...read more

The Two Sum problem involves finding two numbers in an array that add up to a target value.

• Iterate through the array and store the difference between the target and current element in a hashmap.

• Check if the current element exists in the hashmap, if yes, return the indices of the current element and the stored difference.

• Time complexity of O(n) can be achieved by using a hashmap to store elements and their indices.