1. A floating point number that has a O in the MSB of mantissa is said to
have_____.
Correct : B. Underflow
2. Translation from symbolic program into Binary is done in_____.
Correct : A. Two passes.
3. The instruction ‘ORG O’ is a______.
Correct : B. Pseudo instruction.
4. ‘Aging registers’ are _______.
Correct : A. Counters which indicate how long ago their associated pages have been referenced.
5. Memory unit accessed by content is called______.
Correct : D. Associative Memory
6. _________ register keeps tracks of the instructions stored in program stored
in memory.
Correct : C. PC (Program Counter)
7. n bits in operation code imply that there are ___________ possible distinct
operators.
Correct : B. 2n
8. A three input NOR gate gives logic high output only when_____.
Correct : D. all input are high
9. The circuit converting binary data in to decimal is_____.
Correct : D. Code converter
10. The multiplicand register & multiplier register of a hardware circuit
implementing booth's algorithm have (11101) & (1100). The result shall be ______.
Correct : A. (812)10
11. PSW is saved in stack when there is a _____.
Correct : A. interrupt recognized
12. In computers, subtraction is carried out generally by____.
Correct : B. 2's complement method
13. The main memory in a Personal Computer (PC) is made of_____.
Correct : D. bothA.and (B).
14. Cache memory works on the principle of_____.
Correct : C. Locality of reference
15. An n-bit microprocessor has_____.
Correct : D. n-bit instruction register
16. When CPU is executing a Program that is part of the Operating System, it is
said to be in _____.
Correct : B. System mode
17. Logic X-OR operation of (4ACO)H& (B53F)H results _____.
Correct : C. FFFF
18. If the main memory is of 8K bytes and the cache memory is of 2K words. It
uses associative mapping. Then each word of cache memory shall be_____.
Correct : C. 16 bits
19. A Stack-organised Computer uses instruction of _____.
Correct : C. Zero addressing
20. In a program using subroutine call instruction, it is necessary______.
Correct : D. Clear the instruction register
21. Virtual memory consists of _______.
Correct : A. Static RAM
22. In signed-magnitude binary division, if the dividend is (11100)2 and divisor is
(10011)2 then the result is ______.
Correct : B. (10100)2
23. Generally Dynamic RAM is used as main memory in a computer system as
it______.
Correct : B. has higher speed
24. Write Through technique is used in which memory for updating the data
_____.
Correct : D. Cache memory
25. Cache memory acts between_______.
Correct : A. CPU and RAM
26. The circuit used to store one bit of data is known as ______.
Correct : C. Flip Flop
27. Von Neumann architecture is ______.
Correct : A. SISD
28. . In a memory-mapped I/O system, which of the following will not be there?
Correct : A. LDA
29. If memory access takes 20 ns with cache and 110 ns without it, then the ratio
(cache uses a 10 ns memory) is _____.
Correct : B. 90%
30. The addressing mode used in an instruction of the form ADD X Y, is _____.
Correct : C. index
31. _________ register keeps track of the instructions stored in program stored
in memory.
Correct : C. PC (Program Counter)
32. The idea of cache memory is based ______.
Correct : A. on the property of locality of reference
33. The average time required to reach a storage location in memory and obtain
its contents is called the _____.
Correct : C. access time
34. (2FAOC)16 is equivalent to _____.
Correct : B. (001011111010 0000 1100)2
35. The circuit used to store one bit of data is known as_______.
Correct : D. Flip Flop
36. . Computers use addressing mode techniques for ____________.
Correct : D. All the above
37. What characteristic of RAM memory makes it not suitable for permanent
storage?
Correct : C. it is volatile
38. The amount of time required to read a block of data from a disk into memory is composed of seek time, rotational latency, and transfer time. Rotational latency refers to ______.
Correct : A. the time its takes for the platter to make a full rotation
39. In computers, subtraction is generally carried out by ______.
Correct : D. 2’s complement
40. Assembly language ________.
Correct : A. uses alphabetic codes in place of binary numbers used in machine language
41. Floating point representation is used to store ______.