81. An ________ Device is any device that provides information, which is sent to the CPU
input
output
cpu
memory
Answer: 1. input
Explanation:
An input device provides information, which is sent to the CPU. A computer is given instructions by a human using a keyboard or another input device. To interpret these instructions, the computer uses an operating system or software that’s also programmed by a human to translate user commands into something the computer can understand.
82. Current SIMMs have either ______ or ________ connectors (pins).
9 or 32
30 or 70
28 or 72
30 or 72
Answer: 4. 30 or 72
Explanation:
Current SIMMs have either 30 or 72 connectors (pins).
83. BCD stands for:
binary-coded decimal
binary-coded decoded
both a & b
none of these
Answer: 1. binary-coded decimal
Explanation:
Binary coded decimal (BCD) is a system of writing numerals that assigns a four-digit binary code to each digit 0 through 9 in a decimal (base-10) numeral.
84. Which type of RAM needs regular refresh?
dynamic ram
static ram
permanent ram
sd ram
Answer: 1. Dynamic ram
Explanation:
Dynamic ram needs a regular refresh. Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random-access memory (DRAM).
85. A microprocessor retries instructions from :
control memory
cache memory
main memory
virtual memory
Answer: 3. main memory
Explanation:
A microprocessor retries instructions from main memory.
86. The four index register can be used for:
arithmetic operation
multiplication operation
subtraction operation
all of these
Answer: 1. arithmetic operation
Explanation:
The four index register can be used for arithmetic operations.
An index register is a circuit that receives, stores, and outputs instruction-changing codes in a computer. This circuit is also called an address register or a register of modifications. A register is a data-holding place in a computer processor.
There are four 32-bit data registers that can be used for arithmetic, logic, and other operations.
87. The _______ address of a memory is a 20-bit address for the 8086 microprocessor.
physical
logical
both
none of these
Answer: 1. physical
Explanation:
The physical address of a memory is a 20-bit address for the 8086 microprocessor. But, it is specified as a Logical Address. Offset is the displacement of the memory location from the starting location of the segment. The 8086 addresses a segmented memory.
88. Microprocessor references that is available in the cache are called ______.
cache hits
cache line
cache memory
all of these
Answer: 1. cache hits
Explanation:
Microprocessor references that is available in the cache are called cache hits.
A cache hit is a state in which data requested for processing by a component or application is found in the cache memory. It is a faster means of delivering data to the processor, as the cache already contains the requested data.
89. Which of the following memories needs refreshing?
sram
dram
rom
all of above
Answer: 2. dram
Explanation:
Dynamic random access memory (DRAM) is a type of semiconductor memory that is typically used for the data or program code needed by a computer processor to function. DRAM needs refreshing, so without being refreshed the stored data would eventually be lost.
90 . A 32-bit microprocessor has a word length equal to
2 byte
32 byte
4 byte
8 byte
Answer: 3. 4 byte
Explanation:
A 32-bit microprocessor has the word length equal to 32 bit.
