Questions
21
Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
Answer: Program Register
22
Data hazards occur when ……
Answer: Pipeline changes the order of read/write access to operands
24
A microprogram written as string of 0’s and 1’s is a ………….
Answer: binary microprogram
25
Memory address refers to the successive memory words and the machine is called as …………
Answer: word addressable
26
The access time of memory is …………… the time required for performing any single CPU operation.
Answer: Longer than
30
A collection of lines that connects several devices is called …………..
Answer: bus
31
Memory access in RISC architecture is limited to instructions
Answer: STA and LDA
32
Which of the following code is used in present day computing was developed by IBM corporation?
Answer: EBCDIC code
34
What is meant by a dedicated computer?
Answer: which is meant for application software only
35
What is the control unit’s function in the CPU?
Answer: to decode program instruction
36
In Reverse Polish notation, expression A*B+C*D is written as
Answer: AB*CD*+
37
Floating point representation is used to store ______.
Answer: real integers
38
Suppose that a bus has 16 data lines and requires 4 cycles of 250 nsecs each to transfer data. The bandwidth of this bus would be 2 Megabytes/sec. If the cycle time of the bus was reduced to 125 nsecs and the number of cycles required for transfer stayed the same what would the bandwidth of the bus?
Answer: 2 Megabytes/sec
39
Assembly language ________.
Answer: uses alphabetic codes in place of binary numbers used in machine language
40
In computers, subtraction is generally carried out by ______.
Answer: 2’s complement
