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CA QUIZ
CA QUIZ
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1
What is the main objective of I/O buffering in computer system?
Store data permanently on storage devices
Decrease the execution time of programs
Enhance the speed of data transfer between devices and the CPU
Minimize the memory consumption by I/O devices
2
_________ is the step during which a new instruction is read from the memory
Fetch
Decode
None of the above
Execute
3
Two important field of an instruction are :
Both
Opcode
Operand
4
In the circuit shown below, X and Y are digital inputs, and Z is a digital output. What is the Boolean function Z
XY + X
(XY)' + XY'
XY + Y'
X'Y + XY'
5
People who use computer software, hardware, or functions, without requiring extensive technical knowledge
End User
Programmer
IT Specialist
Technician
6
The fastest data access is provided using _______
SRAM
Caches
Registers
DRAM
7
Importance of Interrupt-request line in managing CPU communication. What part of the system does this line belong to?
Control Line
None of the above
Address Line
Data Line
8
is using a computer to create a digital paintin what component of the computer system is using to input the image
Mouse
Touchscreen
Scanner
Keyboard
9
What is a device driver?
A hardware component controlling I/O devices
Memory space allocated for device operations
A security mechanism for I/O devices
Software that facilitates communication between OS and devices
10
Ray is instructed to create a file that contains command for the computer to execute What is this file commonly known as
Information
Procedure
Instruction
Program
11
A group of 4 binary bit is called: -
Digit
Nibble
Decimal
Byte
12
What is the binary representation of the decimal number 465
11010000
00010001
11010001
11011101
13
In a 3-input XNOR gate, the output is 1 when
All inputs are 1
The number of 1's in the inputs is odd
All inputs are 0
The number of 1's in the inputs is even
14
How does double buffering improve I/O performance?
By synchronizing the CPU and device clock rates
By reducing the buffer size to allow quicker access
storing two separate copies of data, reading and writing simultaneously
By keeping all data in the main memory
15
The register that includes the address of the memory unit is termed as the
IR
PCR
ACC
MAR
16
Count output of Q
Q = 1
Q = 0
17
In a cache memory hierarchy, which level is closest to the CPU and typically has the fastest access time?
Main memory
L3 cache
L2 cache
L1 cache
18
A processor performing fetch or decoding of different instruction during the execution of another instruction called ___
Pipelining
Parallel computation
Super scaling
none
19
What are the types of I/O devices are classified into:
None of these
Block oriented devices
Both
Stream oriented devices
20
What is the advantage of interrupt-driven I/O?
It requires no device drivers to function.
It eliminates the need for hardware interrupts.
It reduces CPU idle time
It perform faster data transfer
21
A flag is a __________ that keep track of a changing condition during computer run.
Controller
Register
Memory
22
CPU operation cycle, what stage involves interpreting fetch instructions to identify the operation & associated operands
Store
Decode
Execute
Fetch
23
Which of the following is NOT a typical flag in a flag register?
Overflow Flag
Sign Flag
Parity Flag
instruction Register Flag
24
In a signed 8-bit arithmetic operation, adding +122 and +55 results. Which of the following condition is
TRUE
The carry flag is reset
The zero flag is set
The parity flag is reset
The sign flag is set
25
What is the main advantage of SSDs compared to HDDs?
Lower cost per gigabyte
Larger physical size
Faster read/write speeds
Higher storage capacity
26
What Cpu oversees the management and coordination of all processor operation including fetching instructions from memory
Instruction Registers (IR)
Read-Only Memory (ROM)
Arithmetic Logic Unit (ALU)
Control Unit (CU)
27
How many bits of ASCII code
5
6
7
8
28
When a computer is booting up, where does it initially look for the instructions to start the operating system?
RAM
ROM
HDD
SSD
29
In block-oriented I/O devices, how is data typically transfer?
Without any block structure, line-by-line
Using dynamically sized partitions
As a sequence of bytes
In pre-defined blocks of fixed size.
30
Which of the following is NOT an example of a special-purpose register?
User-visible Register
Memory Address Register (MAR)
Program Counter (PC)
Instruction Register (IR)
31
In EBCDIC code, the maximum character set size is
None of the above
65536
256
128
32
Which component is used to transfer data directly between I/O devices and memory?
Direct Memory Access (DMA)
Interrupt-driven I/O
I/O Buffering
Programmed I/O
33
Operation of memory transfer are:
Read
None
Both
Write
34
What are the advantages of ICs?
Consume higher heat
Low-cost
Require more electricity power.
Small in size
35
In a circuit with inputs A = 1, B = 1, and C = 0 using an OR gate, what will be the output?
True
Undefined
False
None of the above
36
Which type of ROM can be erased using ultraviolet light?
EPROM
PROM
Flash Memory
EEPROM
37
Which register is memory pointer:
Memory Address Register
Instruction Register
Stack Pointer
Program counter
38
Which storage type uses magnetic disks to store data?
SSD
HDD
Flash Drive
RAM
39
Buses are used in a computer to
increase the processing speed of CPU
connect different peripheral component on the motherboard of a PC unit
connect RAM to the motherboard
run the CMOS
40
What is the function of the flag register in a CPU?
To store data temporarily during processing
To store the address of the next instruction to be executed
To manage memory access
To hold the status of the most recent operation
41
Which of the following best describes a sequential logic circuit?
performs arithmetic operations.
uses memory to store state information.
output depends only on the current inputs.
converts analog signals to digital signals.
42
Which is an important data transfer technique.
CPU
None of these
DMA
Memory
43
How is text represented in a computer system?
Octal
ASCII
Decimal
Hexadecimal
44
Which is microcomputer commonly used for commercial data processing, desktop publishing and engineering applications:
Personal Computer
Both
Servers
None of the above
45
Function of Arithmetic Logic Unit (ALU) Which of the following is true?
stores data that the CPU is currently working on.
only used for performing arithmetic operations and not logical operation
responsible for fetching instructions from memory and executing them
both arithmetic operations, and logical operations
46
editing image for a magazine cover and needs the best possible color What color depth used to ensure high quality result
8-bit
16-bit
32-bit
24-bit
47
The American standard code for information interchange has _____ characters
25
64
128
None of the above
48
0 in the sign bit represents a ___________ and 1 in the sign bit represents a __________
None of these
Negative Number
Positive Number
Both
49
What does the term “clock speed” indicate in the context of CPU performance?
Size of cache Memory
Rate of data transfer
Speed at which instructions are executed.
number of cores
50
What is it called when multiple instructions are executed simultaneously by overlapping their execution stages?
Pipelining
None of the above
Multitasking
Parallel processing
51
Which register temporarily stores the result of an arithmetic operation in a CPU?
Program Counter Register (PCR)
Memory Address Register (MDR)
Instruction Register (IR)
Accumulator (AC)
52
Which memory type requires special programming devices or equipment to be programmed after manufacturing?
PROM
ROM
EPROM
EEPROM
53
Which type of memory is non-volatile and used for long-term storage?
Registers
RAM
ROM
Cache Memory
54
What do we use to extend the connectivity of the processor bus?
Controller bus
None of these
PCI bus
Multiple bus
55
Cache memory is located between main memory and ____
CPU
Memory
56
What is pipelining architecture?
It is a memory unit.
A sequence of logic gate
Data flow between CPU and RAM
concurrent execution of multiple instructions
57
_________ generation computers use assembly language “
First Generation
Second Generation
Fourth Genration
Third Generation
58
Which slot provides support for graphically intense computer games?
None of the above
ISA
AGP
PCI
59
Which of the following is NOT a component of a CPU?
ALU
RAM
CU
Registers
60
How many stages of instruction cycle:
4
5
6
7
