Instruction Formats and Addressing Modes Achievers Practice Quiz 3

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Question 1

In microprocessors the term word length depends upon __________

• AData bus
• BRegister
• CALU
• DAll of above

Question 2

Index register in a microprocessor is used for?

• Adirect addressing
• Baddress modification
• Cpointing to the stack
• Dloop execution

Question 3

The program counter (PC) in a microprocessor.

• Acounts the number of programs being executed by the microprocessor
• Bcounts the number of instruction being executed by the microprocessor
• Ccounts the number of interrupts handled by the microprocessor
• Dkeeps the address of the next instruction to be fetched.

Question 4

What does MAR stand for?

• AMain Address Register
• BMemory Access Register
• CMain Accessible Register
• DMemory Address Register

Question 5

The instruction, Add #45,R1 does _______

• AAdds the value of 45 to the address of R1 and stores 45 in that address
• BAdds 45 to the value of R1 and stores it in R1
• CFinds the memory location 45 and adds that content to that of R1
• DNone of the mentioned

Question 6

Consider the terms. Match the following concerning their definitions:

• AOption I-(C), II-(D), III-(B), IV-(A)
• BOption I-(D), II-(C), III-(B), IV(A)
• COption I-(C), II-(A), III-(B), IV-(B)
• DOption I-(B), II-(D), III-(C), IV-(A)

Question 7

Which of the following is true?

• AImmediate addressing mode is used to initialize variable.
• BIndex addressing mode are faster than direct addressing mode.
• CRelative addressing suits for the special locally.
• DBoth (a) and (c)

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