Which of the following statements are true? A) Machine instructions are numbers

Question

Which of the following statements are true?

A) Machine instructions are numbers that are decoded by a processor. Each instruction typically uses a subset of bits to store an opcode which identifies the operation to be performed such as adding or multiplying or shifting data bits.

B) Assembly languages typically use human readable words, mnemonics, that have a 1::1 correspondence with the valid opcodes in machine languages.

C) Each instruction typically uses a subset of bits to identify the operands of an operation such as source and destination registers for computations.

D) An assembler is a program that translates an assembly language program into a machine language program.

E) A compiler is a program that translates one programming language into another. Some compilers translate high level programming languages into assembly language that must be processed by an assembler to produce machine language. Other compilers translate high level programming languages directly into machine language.

F) Java byte codes are a machine language for a virtual machine. To execute a Java program on common computers, the byte codes must be translated into machine instructions for a real (not virtual) machine.

1. Only E

2. A, B, C, D, E, F

3. B, D, F

4. A, B, D, E, F

5. A, B, C

Explanation / Answer

All given statement are correct.

2. A, B, C, D, E, F

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