finals CAO

The primary function of the Central Processing Unit (CPU) is to carry out which operations specified by a computer program?

• Only Input/Output operations

• Arithmetic, logic, controlling, and I/O operations

• Only data storage in RAM

• Connecting to the network

Which of the following components is primarily responsible for performing arithmetic and logic calculations within the CPU?

• Control Unit (CU)

• Register File

• Arithmetic Logic Unit (ALU)

• System Bus

A set of bits that directs the CPU to perform specific operations, consisting of an opcode and address fields, is known as a/an:

• Control Signal

• Instruction Code

• Data Bus

• Clock Cycle

In an instruction code, the Operation Code (Opcode) is the part that specifies the:

• Memory location of the result

• Address of the next instruction

• Operation to be performed (e.g., ADD, SUB)

• Total number of operands

Which special-purpose CPU register holds the address of the next instruction to be fetched from memory?

• Instruction Register (IR)

• Memory Data Register (MDR)

• Program Counter (PC)

• Accumulator (AC)

When the CPU needs to read data from or write data to memory, the memory address is first placed into which register?

• Data Register (DR)

• Memory Address Register (MAR)

• Program Counter (PC)

• Stack Pointer (SP)

The four main phases of the CPU's instruction cycle in sequential order are:

• Execute, Decode, Fetch, Store

• Fetch, Execute, Decode, Store

• Fetch, Decode, Execute, Store

• Decode, Fetch, Execute, Store

During which phase of the instruction cycle does the processor interpret the instruction code and separate it into its opcode and address fields?

• Fetch

• Decode

• Execute

• Store

Which CPU unit is responsible for providing timing and control signals to orchestrate the flow of operations within the processor?

• Arithmetic Logic Unit (ALU)

• Memory Address Register (MAR)

• Control Unit

• Input/Output (I/O) Module

A storage device that stores information in such a manner that the item stored last is the first item retrieved operates on the principle of:

• FIFO (First-In, First-Out)

• LIFO (Last-In, First-Out)

• Random Access

• Direct Access