Instruction Set Architecture Quiz

What is an instruction in computing?

• A type of software program

• A binary-encoded command executed by a processor

• A user-defined algorithm

• A graphical user interface element

What does an instruction consist of?

• Only an opcode

• Only operands

• An opcode and operand(s)

• Only addressing modes

Which instruction format has all instructions of the same length?

• Variable-Length Format

• Hybrid Format

• Fixed-Length Format

• None of the above

What is a disadvantage of fixed-length instruction format?

• Simplifies decoding

• Saves memory space

• Wastes memory space

• Increases instruction complexity

Which format optimizes memory usage but makes decoding more complex?

• Fixed-Length Format

• Variable-Length Format

• Hybrid Format

• None of the above

What does an opcode specify in an instruction?

• The operation to be performed

• The memory address of operands

• The execution time of the instruction

• The instruction's length

Which of the following is an arithmetic and logic instruction?

• MOV

• LOAD

• ADD

• IN

Which instruction type alters the normal sequence of execution?

• Data Transfer Instructions

• Control Flow Instructions

• Floating-Point Instructions

• Arithmetic Instructions

What is an example of an input/output instruction?

• CALL

• IN

• SUB

• MUL

What does ISA stand for?

• Instruction System Application

• Instruction Set Architecture

• Integrated Software Algorithm

• Internal System Addressing