Practice Test: Question Set - 07
1. The BSA instruction is________.
- (A) Branch
and store accumulator
- (B) Branch
and save return address
- (C) Branch
and shift address
- (D) Branch
and show accumulator
2. A floating point number that has a O in the MSB of mantissa is said to have________.
- (A) Overflow
- (B) Underflow
- (C) Important
number
- (D) Undefined
3. Translation from symbolic program into Binary is done in________.
- (A) Two
passes
- (B) Directly
- (C) Three
passes
- (D) Four
passes
4. The instruction ‘ORG O’ is a________.
- (A) Machine
Instruction
- (B) Pseudo
instruction
- (C) High
level instruction
- (D) Memory
instruction
5. ‘Aging registers’ are ________.
- (A) Counters
which indicate how long ago their associated pages have been referenced
- (B) Registers
which keep track of when the program was last accessed
- (C) Counters
to keep track of last accessed instruction
- (D) Counters
to keep track of the latest data structures referred
6. Memory unit accessed by content is called________.
- (A) Read only
memory
- (B) Programmable
Memory
- (C) Virtual
Memory
- (D) Associative
Memory
7. A three input NOR gate gives logic high output only when________.
- (A) One input is
high
- (B) One input is
low
- (C) Two input
are low
- (D) All input
are high
8. The circuit converting binary data in to decimal is_________.
- (A) Encoder
- (B) Multiplexer
- (C) Decoder
- (D) Code
converter
9. PSW is saved in stack when there is a ________.
- (A) Interrupt
recognized
- (B) Execution
of RST instruction
- (C) Execution
of CALL instruction
- (D) All
of these
10. In computers, subtraction is carried out generally by________.
- (A) 1’s
complement method
- (B) 2’s
complement method
- (C) Signed
magnitude method
- (D) BCD
subtraction method
11. An n-bit microprocessor has________.
- (A) n-bit
program counter
- (B) n-bit
address register
- (C) n-bit
ALU
- (D) n-bit
instructions register
12. When CPU is executing a Program that is part of the Operating System, it is said to be in ________.
- (A) Interrupt
mode
- (B) System
mode
- (C) Half
mode
- (D) Simplex
mode
13. Logic X-OR operation of (4ACO)H & (B53F)H results ________.
- (A) AACB
- (B) 0000
- (C) FFFF
- (D) ABCD
14. A Stack-organized Computer uses instruction of ________.
- (A) Indirect
addressing
- (B) Two-addressing
- (C) Zero
addressing
- (D) Index
addressing
15. Cache memory acts between_________.
- (A) CPU and RAM
- (B) RAM and ROM
- (C) CPU and Hard
Disk
- (D) None of
these
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