CS401P Quiz 3 Set 3

Q1. REP with _____will utilizes the full processor power to do the scrolling in minimum time

1. REPNE
2. SCAS
3. MOVS
4. LES

Correct answer: MOVS

Q2.

1. Hexadecimal Numbers
2. Binary Number
3. Decimal Numbers
4. 0 Based Numbers

Correct answer: Hexadecimal Numbers

Q3. REPE repeat the following string instruction while the _______is set.

1. Zero flag
2. Direction flag
3. Parity flag
4. Carry flag

Correct answer: Zero flag

Q4. If operand is 16bits in DIV instruction then dividend will be ____

1. 32-bits
2. 8-bits
3. 16-bits
4. 64-bits

Correct answer: 32-bits

Q5. In string instructions, the mode is called auto-increment mode when:

1. DF is set
2. DF is cleared
3. CX is set
4. ZF is cleared

Correct answer: DF is cleared

Q6. MOVS instruction is used to ____________

1. Move register to register
2. Move a memory location to register
3. Move register to a memory location
4. Move memory to memory

Correct answer: Move memory to memory

Q7. mov byte [swap], 0 What would happen if we dont use the keyword byte or word before the operand?

1. Nothing will happen, program will run smoothly all the time
2. Nothing will happen but its good practice to use theses keywords
3. Its useless to use these keywords
4. Its good to use, otherwise size mismatch error may occur

Correct answer: Its good to use, otherwise size mismatch error may occur

Q8. Our computers screen is like a 2-D array having __________ rows and __________ columns.

1. 25, 80
2. 80, 25
3. 25, 40
4. 40, 25

Correct answer: 80, 25

Q9. VGA stands for

1. Video Graphics Application
2. Video Graphic Accumulator
3. Visual Graphics Adapter
4. Video Graphics Adapter

Correct answer: Video Graphics Adapter

Q10. The ____ shifting is achieved by multiplying the number by 2.

1. Left
2. Right

Correct answer: Left