Aakraya Research Interview Questions and Answers

Mutex is a locking mechanism to ensure exclusive access to a shared resource, while semaphore is a signaling mechanism to control access to a shared resource.

• Mutex allows only one thread to access the shared resource at a time, while semaphore can allow multiple threads to access the shared resource simultaneously.

• Mutex is binary, meaning it has only two states - locked and unlocked, while semaphore can have multiple states depending on the number of threads allowed to access...read more

To find max number in linked list using stack.

• Create an empty stack.

• Traverse the linked list and push each element onto the stack.

• Pop elements from the stack and compare with max value.

• Return the max value.

Reverse a linked list using recursion

• Create a recursive function that takes the head of the linked list as input

• Base case: if the head is null or the next node is null, return the head

• Recursively call the function with the next node as input

• Set the next node's next pointer to the current node

• Set the current node's next pointer to null

• Return the new head of the reversed linked list

Reverse a linked list using recursion

• Create a recursive function that takes the head of the linked list as input

• Base case: if the head is null or the next node is null, return the head

• Recursively call the function with the next node as input

• Set the next node's next pointer to the current node

• Set the current node's next pointer to null

• Return the new head of the reversed linked list

Create a Kanban board in React during live coding interview

• Use React components to represent different sections of the Kanban board (e.g. To Do, In Progress, Done)

• Implement drag and drop functionality for moving tasks between sections

• Utilize state management (e.g. useState) to track the tasks and their statuses

• Style the board using CSS or a UI library like Material-UI

Unit testing is a software testing method where individual units or components of a software are tested in isolation.

• Identify the unit to be tested

• Write test cases to cover different scenarios

• Use testing frameworks like JUnit or NUnit

• Mock external dependencies for isolated testing

Reverse a linked list

• Iterate through the linked list and reverse the pointers

• Use three pointers to keep track of current, previous, and next nodes

• Update the pointers accordingly to reverse the list

23 to 3G handover is a process where a mobile device switches from a 2G network to a 3G network for better data speeds and coverage.

• Handover process involves the mobile device connecting to a new network while maintaining the ongoing call or data session.

• The switch from 2G to 3G network is triggered based on factors like signal strength, network congestion, and data speed requirements.

• During handover, the mobile device communicates with both the 2G and 3G networks to ensure a...read more