L4 Slides – Computer Systems – KS4

Multiple Choice

Which of the following best describes the function of registers in a CPU?

• A location to store attendance

• A small fast access memory location

• A location to store status quickly

• A place to store programs

Multiple Choice

What is a clock?

• A clock records the number of cycles

• A clock times how long a processor has been running

• A clock synchronises the cycles per second

Multiple Choice

What is a register?

• A location to store attendance

• A small, fast access memory location

• A location to store status quickly

Multiple Choice

What is the role of the ALU?

• The ALU carries out logical and mathematical operations

• The ALU helps to save to memory

• The ALU controls the bus system

Multiple Choice

What does ALU stand for?

• Arithmetic logic unit

• Arithmetic link unit

• Algorithm logic unit

Open Ended

Why is understanding the main memory important for computer systems?

Multiple Choice

What does RAM stand for?

• Readily Available Memory
• Rapid Access Module
• Random Allocation Method
• Random Access Memory

Multiple Choice

What does ROM stand for?

• Rapid-Only Memory
• Read-Only Memory

• Random-Only Memory
• Read-Only Module

Multiple Choice

What are the two main types of main memory and their basic functions?

• RAM - Read only, ROM - Read and write

• RAM - Read and write, ROM - Read only

• RAM - Stores permanent instructions, ROM - Stores instructions for CPU

• RAM - Non-volatile, ROM - Volatile

Multiple Choice

Which of the following statements about RAM is correct?

• RAM stores permanent instructions for booting up the computer.

• RAM is read only.

• RAM stores instructions and data ready for a CPU to execute.

• RAM is non-volatile.

Fill in the Blanks

Fill in the blank:

is used to store permanent instructions that tell a computer how to 'boot up'.

Open Ended

Describe the process that occurs when a program is executed in terms of RAM and the CPU.

Open Ended

Explain why a computer system might run slowly if it does not have enough RAM.

Multiple Select

Select all statements that are true about volatile and non-volatile memory.

• Volatile memory loses data when power is off.

• Non-volatile memory keeps data when power is off.

• RAM is non-volatile memory.

• ROM is volatile memory.

Fill in the Blanks

Fill in the blank:

is a type of main memory that is non-volatile.

Multiple Choice

Which type of main memory is volatile and which is non-volatile?

• RAM is volatile, ROM is non-volatile

• RAM is non-volatile, ROM is volatile

• Both RAM and ROM are volatile

• Both RAM and ROM are non-volatile

Open Ended

Explain the difference in storage capacity between RAM and ROM based on the information provided.

Multiple Choice

Which type of main memory typically has a capacity of 1-256GB?

• RAM

• ROM

• Cache

• Flash

Multiple Choice

What is the role of secondary storage when a computer system runs out of main memory?

• It acts as an extension of main memory

• It replaces the main memory

• It stores only the operating system

• It increases the speed of the CPU

Open Ended

If we already have two types of main memory, why does a computer system need a form of secondary memory, such as a hard disk drive?

Multiple Choice

What is the main function of cache memory in a computer system?

• To store all data permanently

• To improve performance by saving frequently used instructions and data

• To connect the CPU to external devices

• To increase the size of RAM

Multiple Select

Select all correct statements about cache memory based on the lesson.

• Cache stores frequently used instructions and data.

• L3 cache is faster than RAM.

• L1 cache is the slowest cache.

• Cache is not important for CPU performance.

Open Ended

Explain how the proximity of cache to the CPU affects its speed and size.

(proximity = how close it is)

Multiple Choice

Which of the following statements about cache levels is correct?

• L1 cache is the largest but slowest.

• L2 cache is usually part of the RAM.

• L3 cache is slower than RAM.

• L1 cache is the fastest but can store the least.

Open Ended

How does cache help speed up the process of fetching instructions from RAM?

Fill in the Blanks

The main memory in a computer system is also known as

.