CS401 Quizzes 2023 by Danish Hanif

Paid Services Available 10/10 Marks Guarantee · CS401 Quiz File · 6/6/2023 9:14:03 AM

Q1. In 8088, there is a _______________ stack.

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

Q2. REPE repeats a string instruction while the ___________ flag is set.

1. parity
2. zero
3. carry
4. direction

Q3. With the execution of CALL instruction, the value of _________is decremented by 2.

1. SP
2. DS
3. CX
4. BX

Q4. Extended Shifting Algorithm consists of:

1. 4 instructions
2. 1 instruction
3. 2 instructions
4. 3 instructions

Q5. If AND operation is performed between AX and BX, then how many AND operations will be performed in total?

1. 32
2. 2
3. 8
4. 16
5. ____________ is a special instruction that loads a general purpose register, and a segment register from two consecutive memory locations.

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

Q7. The top of stack is contained in ______ register.

1. SP
2. AX
3. BP
4. BX
5. In iAPX88, when an element is popped from the stack, SP is ___________________ by 2.

a. B. decremented

C. incremented

D. divided

E. multiplied

Q9. The clear screen operation initializes the whole block of video memory to __________________.

1. 0x0721
2. 0x0720
3. 0x0175
4. 0x0714

Q10. To convert the case of a character, we add or subtract _______________ from its ASCII code.

1. 0x30
2. 0x41
3. 0x10
4. 0x20