CS401 Quiz 2

Q1. In 8051, there is an _______________ stack.

1. decrementing
2. incrementing
3. stagnant
4. semi-automatic

Correct answer: incrementing

Q2. A symbol associated to an instruction in the program is known as:

1. Operand
2. Constant
3. Definition
4. Label

Correct answer: Label

Q3. When the control is transferred to a subroutine?

1. After the arguments are popped out from the stack
2. When the return address is recovered
3. After the arguments are pushed on the stack
4. When the instruction pointer is not available

Correct answer: After the arguments are pushed on the stack

Q4. The operand of ____________ is called the source operand because the data moves to the stack from the operand.

1. CALL
2. POP
3. RET
4. PUSH

Correct answer: PUSH

Q5. In ______________, a zero is inserted from the right and every bit moves one position to its left with the most significant bit dropped into the carry flag.

1. SAR
2. SAL
3. SHL
4. both SHL and SAL

Correct answer: both SHL and SAL

Q6. Program consists of ________ logical parts.

1. One
2. Two
3. Four
4. Three

Correct answer: Three

Q7. In far jump, _____________________.

1. both offset and segment are given
2. only offset is given
3. no need to mention any segment or offset
4. only segment address is given

Correct answer: both offset and segment are given

Q8. Conditional jump can only be ___________.

1. near
2. long
3. short
4. far

Correct answer: short

Q9. A decrementing stack moves from _________ to __________ addresses as elements are added in it.

1. negative, positive
2. positive, negative
3. higher, lower
4. lower, higher

Correct answer: higher, lower

Q10. Which of the following registers hold the address of data in Intel 8088?

1. BX, SP, SI and DI
2. BX, BP, SI and ES
3. BX, BP, ES and DI
4. BX, BP, SI and DI

Correct answer: BX, BP, SI and DI