A-Level Computer Science Revision Quiz

What is the first step in the fetch-decode-execute cycle?

• The ALU performs calculations.

• The program counter copies the address into the MAR.

• The instruction is executed.

• The program counter increments.

What does the control unit do during the fetch stage of the fetch-decode-execute cycle?

• It decodes the instruction.

• It increments the program counter.

• It executes the instruction.

• It sends a read signal down the control bus.

Which architecture uses separate storage for data and instructions?

• RISC

• Von Neumann architecture

• Harvard architecture

• CISC

What is a key feature of pipelining in CPU architecture?

• It eliminates the use of the ALU.

• It prevents the CPU from overheating.

• It allows multiple instructions to be executed at once.

• It reduces the need for a control unit.

What does RISC stand for?

• Reduced Instruction Set Computer

• Real-time Instruction Set Computer

• Reduced Input/Output System Computer

• Real-time Input System Computer

Which CPU architecture is more complex and powerful?

• RISC

• Harvard

• CISC

• Von Neumann

Which scheduling algorithm uses a fixed time quantum?

• Multi-Level Feedback Queue

• First Come First Served

• Shortest Job First

• Round Robin

What is the main advantage of using the Round Robin scheduling algorithm?

• It prioritizes short jobs.

• It reduces processing time for all tasks.

• It allows processes with higher priority to execute first.

• It ensures all processes get equal CPU time.

What does an assembler specifically convert?

• High-level language to machine code

• Assembly code to machine code

• Binary code to assembly code

• Source code to object code

What SQL clause is used to filter records?

• JOIN

• WHERE

• FROM

• SELECT