Cashfree Payments Interview Questions and Answers

Explanation of purpose of occ controllers, scan enable signals, lock up latch and arrangement of negative and positive edge triggered flops.

• The purpose of occ controllers is to manage the clock signals in a design and ensure proper timing.

• Scan enable signals are used for testing and debugging purposes.

• Pipelined signals are used for faster data transfer while non-pipelined signals are used for simpler designs.

• Lock up latch is used to prevent race conditions between negative an...read more

Compression ratio can be tweaked by adjusting the volume of the combustion chamber. This affects fuel efficiency and power output.

• Compression ratio is the ratio of the volume of the combustion chamber at its largest to its smallest.

• Increasing compression ratio can improve fuel efficiency and power output, but too high a ratio can cause engine knocking.

• Factors that impact compression ratio include the size and shape of the combustion chamber, the size of the piston, and the st...read more

I have observed hold and setup violations in my design and took necessary actions.

• I used static timing analysis (STA) to identify hold and setup violations.

• I fixed hold violations by adding delay cells or increasing clock period.

• I fixed setup violations by reducing delay or decreasing clock period.

• I also checked for false paths and multi-cycle paths.

• I re-ran STA after fixing violations to ensure timing closure.

• I documented the changes made and communicated with the team.

• I als...read more

Resetting a tap controller without trst signals and finding coverage gaps.

• For resetting a tap controller without trst signals, we can use a power-on reset circuit or a watchdog timer.

• To find coverage gaps, we can use code coverage analysis tools like CodeSonar, Coverity, or LDRA.

• We can also use dynamic analysis tools like Valgrind or Purify to find runtime errors and coverage gaps.

• Manual testing and peer code reviews can also help in identifying coverage gaps.

• It is important ...read more

Design a system to notify users about stock availability and changes.

• Create a database to store stock information and user preferences.

• Implement a notification system to alert users when stock levels change.

• Allow users to set preferences for specific products or thresholds.

• Consider using push notifications, emails, or SMS for notifications.

• Include a user interface for managing preferences and viewing stock information.

Determining the level of water between buildings based on various factors

• Consider the elevation of each building

• Take into account the distance between the buildings

• Factor in any natural or man-made barriers that may affect water flow

Design a Snake & Ladder game using arrays and logic.

• Create a 10x10 grid representing the game board.

• Assign positions for snakes and ladders on the board.

• Use arrays to store the positions of players and their movements.

• Implement logic for dice roll and player movement.

• Include win condition when a player reaches the final position.