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WorksheetsIGCSE CPU Quiz
Total questions: 25
Worksheet time: 40mins
What are the three main components of a CPU?
control unit, arithmetic logic unit, input devices
control unit, arithmetic logic unit, memory
control unit, memory unit, cache
memory unit, arithmetic logic unit, cache
What is the purpose of the control unit in a CPU?
The purpose of the control unit in a CPU is to perform mathematical calculations.
The purpose of the control unit in a CPU is to store data.
The purpose of the control unit in a CPU is to provide power to the CPU.
The purpose of the control unit in a CPU is to coordinate and control the operations of the CPU.
What is the function of the arithmetic logic unit (ALU) in a CPU?
The ALU is designed to handle network communications in a CPU.
The ALU is responsible for managing memory in a CPU.
The function of the ALU is to perform arithmetic and logical operations in a CPU.
The ALU is used to control input and output devices in a CPU.
What are registers in a CPU?
Registers are used to store instructions that the CPU needs to execute.
Registers are large, slow storage locations used to store data in a CPU.
Registers are used to store data that the CPU does not need to access quickly.
Registers are small, high-speed storage locations used to store data that the CPU needs to access quickly.
What is the role of the program counter (PC) register in a CPU?
The role of the program counter (PC) register is to keep track of the memory address of the next instruction to be executed.
The program counter (PC) register is used to store temporary data during the execution of a program.
The program counter (PC) register is used to store the result of a computation.
The program counter (PC) register is responsible for managing the input/output operations of the CPU.
What is the purpose of the accumulator register in a CPU?
To control the clock speed of the CPU
To temporarily store data during arithmetic and logical operations.
To store the operating system
To connect the CPU to the motherboard
How does the cache memory in a CPU improve performance?
By storing frequently accessed data and instructions closer to the CPU.
By increasing the number of cores in the CPU.
By reducing the size of the CPU.
By increasing the clock speed of the CPU.
_________________ is Perfect for transmitting over longer distances as there are no synchronisation issues
Serial
Parallel
Lower costs but also slower speed of transmission
Serial
Parallel
Data is synchronised by a clock
Synchronous Serial
Asynchronous Serial
Parallel
Over long distances synchronization errors may start to occur
Serial
Parallel
Used in Integrated Circuits and Buses
Parallel Data Transmission
Serial Data Transmission
An overhead of extra bit is associated with which form of transmission
synchronous
asynchronous
serial
parallel
Extra bit sent with each byte of data
Checksum
Parity check
ARQ
Data Transmission when data is transmitted both ways at the same time
Serial
Simplex
Duplex
Half duplex
(a) is the term used to describe the message before it is encrypted?
Which of the following is the form of error detection that makes use of the system of acknowledgements and timeouts?
parity bit
ARQ
cyclic redundancy check
check digit
_____________ is generated after encryption.
plaintext
ciphertext
encrypted message
session key
Which of the following describes the check where the receiving computer sends back a copy of the data to the sending computer to allow it to compare the data?
echo check
checksum
ARQ
check digit
