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WorksheetsHardware-ITB
Total questions: 10
Worksheet time: 5mins
Which statement best describes the role of the control unit (CU) inside the CPU?
It stores the most frequently used data permanently for the CPU.
It performs arithmetic operations such as addition and subtraction on data.
It coordinates fetching, decoding, and directing the execution of instructions.
It provides long-term, non-volatile storage for user files and applications.
How does the ALU primarily contribute to the operation of the CPU?
By executing arithmetic and logic operations on input data.
By routing data between the CPU and external devices over the bus.
By permanently storing the operating system and boot instructions.
By predicting which instruction the CPU will likely execute next.
Why are CPU registers considered the fastest storage locations in a computer system?
They store data only in non-volatile form, which makes access quicker.
They store data only in non-volatile form, which makes access quicker.
They use optical technology to transfer bits using light instead of electricity.
They are located physically inside the CPU and use very small, fast circuits.
What is the main purpose of cache memory in a computer system?
To connect the CPU to external devices such as printers and scanners.
To store the operating system and system configuration settings.
To permanently back up user data in case of power loss.
To provide extremely fast, temporary storage of frequently accessed data for the CPU.
Which description best matches the function of a system bus in a computer?
It stores frequently accessed instructions to reduce CPU waiting time.
It provides wireless communication between the computer and external networks.
It provides a shared communication pathway for data, addresses, and control signals between components.
It delivers power from the power supply to internal components.
What is the key difference between primary memory and secondary memory?
Primary memory uses magnetic technology, while secondary memory uses only semiconductor technology.
Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.
Primary memory stores user files, while secondary memory stores only the operating system.
Primary memory is always located outside the computer case, while secondary memory is integrated into the CPU.
Which characteristic best describes RAM (Random Access Memory)?
Non-volatile storage used to permanently save files and programs.
Read-only memory that can only be written once at the factory.
Mechanical storage that uses spinning platters to store bits magnetically.
Volatile memory that temporarily holds data and instructions currently in use.
How does ROM (Read-Only Memory) typically differ from RAM in terms of usage?
ROM stores data that must persist even when power is off, such as firmware, while RAM holds data that changes frequently during normal operation.
ROM is always faster than RAM and is used for caching frequently accessed program code.
ROM is used as the main working memory for active applications, while RAM stores permanent system instructions.
ROM is used only in external devices, while RAM is used only on the motherboard.
What is a defining feature of DRAM (Dynamic RAM) compared to SRAM (Static RAM)?
DRAM is faster and more expensive per bit than SRAM, making it ideal for CPU caches.
DRAM cells must be periodically refreshed to retain their data, while SRAM cells do not require refreshing.
DRAM is non-volatile, retaining data without power, while SRAM loses data when power is removed.
DRAM uses purely optical methods to store bits, while SRAM uses magnetic methods.
Which situation best illustrates the use of SRAM in a typical computer system?
Holding immutable firmware that starts the system when powered on.
Acting as the small, very fast memory inside the CPU used as cache.
Serving as the main system memory where large applications like video editors load their data.
Storing long-term user files such as documents and photos.
