COMPUTER ORGANIZATION AND
ARCHITECTURE CERTIFICATION
EVALUATION EXAMS SET FULL QUESTIONS
AND COMPLETE SOLUTION
●● What are the four functional blocks in a computer?
Answer: 1. Central Processing Unit (CPU) 2. Memory 3. Input Unit 4.
Output Unit
●● What is the role of the Central Processing Unit (CPU)?
Answer: The CPU is referred to as the brain of a computer system,
consisting of the Control Unit, Arithmetic Logic Unit (ALU), and
Registers.
●● What does the Arithmetic Logic Unit (ALU) do?
Answer: The ALU performs arithmetic operations (ADD, SUBTRACT,
MULTIPLY, DIVIDE) and logical operations (COMPARE, SHIFT,
ROTATE, AND, OR).
●● What is the function of the Control Unit (CU)?
Answer: The Control Unit analyzes each instruction in the program and
sends relevant signals to the ALU, Memory, Input unit, and Output unit.
, ●● What is the instruction cycle?
Answer: The sequence involved in fetching and executing instructions
by the control unit one by one.
●● What are the three types of system buses?
Answer: 1. Data Bus 2. Address Bus 3. Control Bus
●● What is the purpose of the Data Bus?
Answer: The Data Bus is used when any unit is sending data,
instruction, or command code to another unit.
●● What does the Address Bus do?
Answer: The Address Bus is used to send address information,
indicating the location of data in memory to another unit.
●● What is the role of the Control Bus?
Answer: The Control Bus carries signals that report the status of various
units and instructs operations like Read or Write.
●● What is a register in a CPU?
Answer: A special temporary storage location within the CPU that
quickly accepts, stores, and transfers data and instructions being used
immediately.
ARCHITECTURE CERTIFICATION
EVALUATION EXAMS SET FULL QUESTIONS
AND COMPLETE SOLUTION
●● What are the four functional blocks in a computer?
Answer: 1. Central Processing Unit (CPU) 2. Memory 3. Input Unit 4.
Output Unit
●● What is the role of the Central Processing Unit (CPU)?
Answer: The CPU is referred to as the brain of a computer system,
consisting of the Control Unit, Arithmetic Logic Unit (ALU), and
Registers.
●● What does the Arithmetic Logic Unit (ALU) do?
Answer: The ALU performs arithmetic operations (ADD, SUBTRACT,
MULTIPLY, DIVIDE) and logical operations (COMPARE, SHIFT,
ROTATE, AND, OR).
●● What is the function of the Control Unit (CU)?
Answer: The Control Unit analyzes each instruction in the program and
sends relevant signals to the ALU, Memory, Input unit, and Output unit.
, ●● What is the instruction cycle?
Answer: The sequence involved in fetching and executing instructions
by the control unit one by one.
●● What are the three types of system buses?
Answer: 1. Data Bus 2. Address Bus 3. Control Bus
●● What is the purpose of the Data Bus?
Answer: The Data Bus is used when any unit is sending data,
instruction, or command code to another unit.
●● What does the Address Bus do?
Answer: The Address Bus is used to send address information,
indicating the location of data in memory to another unit.
●● What is the role of the Control Bus?
Answer: The Control Bus carries signals that report the status of various
units and instructs operations like Read or Write.
●● What is a register in a CPU?
Answer: A special temporary storage location within the CPU that
quickly accepts, stores, and transfers data and instructions being used
immediately.
