CS401 Quiz 1 Set 5

Q1. In _________________ operation, the Most Significant Bit (MSB) is inserted from the right, causing every bit to move one position to the left. The MSB is also copied into the carry flag.

1. Rotate through Carry Left (RCL)
2. Rotate Left (ROL)
3. Rotate through Carry Right (RCR)
4. Rotate Right (ROR)

Correct answer: Rotate Left (ROL)

Q2. In general, width of a memory cell cannot be greater than the width of __________.

1. I/O Bus
2. Address Bus
3. Data Bus
4. Control Bus

Correct answer: Data Bus

Q3. Which of the following keywords is used to define two bytes in memory?

1. DB
2. DW
3. DD
4. DN

Correct answer: DW

Q4. Registers are normally part of _______________.

1. CPU and Cache
2. Hard disk
3. CPU
4. RAM

Correct answer: CPU

Q5. Constant can never be used as ___________.

1. destination
2. source
3. immediate source
4. both source and destination

Correct answer: destination

Q6. Which of the following is a non-destructive AND operation?

1. AND
2. OR
3. XOR
4. TEST

Correct answer: TEST

Q7. Simple CMP instruction uses _____ operation.

1. Subtraction
2. Division
3. Multiplication
4. Addition

Correct answer: Subtraction

Q8. mov [1234], ax is an example of ________________ addressing.

1. direct
2. base + index
3. register indirect
4. base register indirect

Correct answer: direct

Q9. In assembly language, the first executable instruction of the program should be placed at the offset

1. 0x1100
2. 0x0010
3. 0x0100
4. 0x0000

Correct answer: 0x0100