Computer Architecture Quiz

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

• Execute the instruction

• Decode the instruction

• Retrieve the instruction

• Store the result

Which register holds the instruction currently being processed?

• MAR

• CIR

• ACC

• MDR

What occurs during the decode phase of the cycle?

• The ALU performs calculations

• The Control Unit interprets the instruction

• Data is moved to the MDR

• The Program Counter resets

What action does the Program Counter (PC) take after fetching an instruction?

• It resets to zero

• It moves to the next instruction

• It executes the instruction

• It retains the current instruction

Which component is responsible for performing calculations and logical operations?

• MAR

• MDR

• ALU

• CU

What is the purpose of the Memory Address Register (MAR)?

• Holds the address of the next instruction

• Stores the current instruction

• Executes arithmetic operations

• Manages data flow

Which register temporarily stores data being transferred to or from memory?

• PC

• MAR

• MDR

• CIR

What is the primary role of the Control Unit (CU)?

• Store temporary data

• Execute instructions

• Oversee and manage CPU functions

• Perform arithmetic operations

Where are the results of ALU operations stored?

• PC

• ACC

• CIR

• MDR

What is the function of an assembler?

• Converts assembly language into machine code

• Translates code line-by-line as it runs

• Converts high-level programming code into machine code

• Automatically debugs programs