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1. When the hexadecimal value ABCD in a 32-bit register is logically shifted right by two bits, which of the following is the resulting value in hexadecimal?
2. Which of the following is a variable-length, letter-and-number error-detection scheme, where on the sender side, the data is appended with the remainder obtained by dividing the data bits by a predetermined polynomial, and on the receiver side, error detection is performed by checking whether the received sequence is divisible by the same polynomial?
3. Which of the following in the RAID configuration achieves the highest-speed disk access at the cost of reliability?
4. In a CPU, which of the following is a special register that contains the address of the next instruction to be fetched?
5. Which of the following is an appropriate CPU operation associated with cache memory?
6. For two 8-bit signed integers A and B in 2’s complement format, which of the following will cause an overflow when A and B are added?
7. The following postfix expression is evaluated where A = 14, B = 3, C = 5, and D = 6. What is its result? Expression: A B C × + D B − C × −
8. Which of the following statements about SRAM and DRAM is correct?
9. Which of the following RAID levels allows data recovery if one disk fails?
10. Which of the following is a computer architecture where multiple instructions execute in parallel by slightly offsetting the execution of different instructions?
11. Which of the following statements about flash memory is correct?
12. Which of the following is the octal equivalent of the hexadecimal number 7B5?
13. For a non-negative integer X, which of the following operations gives the remainder after division of X by 8?
14. When sorting an array using randomized quicksort (pivot chosen randomly), what are the average-case and worst-case time complexities?
15. What is the primary function of a Repeater in a computer network?
16. Which of the following correctly describes RAID 5?
17. Which search algorithm expands nodes level by level before moving deeper?
18. The main drawback of hill climbing is—
19. Which of the following is used to restrict access to certain details of an object in OOP?
20. Which device operates at Layer 2 of OSI?
21. A transaction that leaves the database in an inconsistent state if partially executed violates—
22. Which of the following is not a linear data structure?
23. Which OS concept allows multiple processes to run simultaneously?
25. If x = 2 and y = 3, what is the value of 2x² + 3y²?
