CS401 Midterm Past Paper

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Practice Quiz from CS401 Midterm Past Paper

This quiz will evaluate your preparation for the CS401 midterm examination and it is based on the past papers of CS401 . The purpose of this quiz is to evaluate your performance in this subject. If you can pass this quiz, then there is a great chance that you can secure good marks in your exams.

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Created on January 17, 2022 By

faisal_faisi

CS401

CS401 Midterm Past Papers Practice Quiz

Welcome to CS401 Midterm Online Practice Quiz.

You can check your preparation of CS401 for your Exams here.

Questions Will be different every time you will attempt.

1 / 30

Category: CS401-mid

While using STOBS, if DF=1 then

a. The value of SI will be incremented by one

b. The value of SI will be decremented by one

c. The value of SI will be incremented by two

d. The value of SI will be decremented by two

2 / 30

Category: CS401-mid

8088 is a 16bit processor with its accumulator and all registers of__________.

a. 6 bits

b. 16 bits

c. 32 bits

d. 64 bits

3 / 30

Category: CS401-mid

To transfer control back the RET instruction take

a. No arguments

b. 3 arguments

c. 1 argument

d. 1 argument

4 / 30

Category: CS401-mid

The prevalent convention in most high level languages is stack clearing by the

a. Stack

b. Caller

c. Callee

d. RET

5 / 30

Category: CS401-mid

Assembly language is:

a. Low-level programming language

b. Not considered closer to the computer

c. High-level programming language

d. Also known as machine language

6 / 30

Category: CS401-mid

if contains decimal -2 and BX contains decimal 2 then after the execution of instructions

CMP AX, BX JA label

a. Zero flag will set

b. Jump will be taken

c. ZF will contain value -4

d. Jump will not be taken

7 / 30

Category: CS401-mid

decrements SP (the stack pointer) by two and then transfers a word from the source operand to the top of stack

a. CALL

b. RET

c. POP

d. PUSH

8 / 30

Category: CS401-mid

If D is “35” is shift to left 2 bits the new value

a. 35

b. 17

c. 70

d. 140

9 / 30

Category: CS401-mid

| 0 |--›| 1 | 1 | 0 | 1 | 0 | 0 | 0 | --›| C | is a example of ______

a. Shl

b. Shr

c. Sal

d. sa

10 / 30

Category: CS401-mid

Only instructions allow moving data from memory to memory

a. string

b. word

c. indirect

d. stack

11 / 30

Category: CS401-mid

Execution of the instruction “mov word [ES : 0], 0x0741” will print

a. “A” appear on the top right of screen

b. “A” appear on the bottom left of screen

c. “A” appear on the center of screen

d. “A” appear on the top left of screen

12 / 30

Category: CS401-mid

After execution of JCXZ instruction CX will changed with flag affect.

a. DF

b. OF

c. CF

d. None of Above

13 / 30

Category: CS401-mid

If D is “35” is shift to left 2 bits the new value

a. 17

b. 35

c. 140

d. 70

14 / 30

Category: CS401-mid

The first instruction of “COM” file must be at offset:

a. 0x1000

b. 0x0000

c. 0x0010

d. 0x0100

15 / 30

Category: CS401-mid

Stack is a ______ that behaves in a first in last out manner.

a. None of the Given

b. data structure

c. Heap

d. Program

16 / 30

Category: CS401-mid

The extended ASCII has

a. 256 characters

b. 502 characters

c. 64 characters

d. 128 characters

17 / 30

Category: CS401-mid

if ax contains decimal -2 and BX contains decimal 2 then after the execution of instructions: CMP AX, BX ,JA label

a. ZF will contain value -4

b. Jump will be taken

c. Jump will not be taken

d. Zero flag will set

18 / 30

Category: CS401-mid

Which bit of the attributes byte represents the red component of background color ?

a. 4

b. 5

c. 6

d. 3

19 / 30

Category: CS401-mid

The routine that executes in response to an INT instruction is called

a. IRS

b. IRT

c. ISP

d. ISR

20 / 30

Category: CS401-mid

The execution of the instruction “mov word [ES : 0], 0x0741” will print character “A” on screen , background color of the screen will be

a. Blue

b. White

c. Red

d. Black

21 / 30

Category: CS401-mid

One screen location corresponds to a

a. Byte

b. Double byte

c. Double word

d. Word

22 / 30

Category: CS401-mid

The second byte in the word designated for screen location holds

a. The dimension of the screen

b. Character position on the screen

c. Character color on the screen

d. ACSII code of the character

23 / 30

Category: CS401-mid

In the Rotate Right Operation every bit moves one position to right and the bit dropped from the right is inserted at the left and:

a. Don’t go anywhere

b. moves to AL

c. Dropped in CF

24 / 30

Category: CS401-mid

The clear screen operation initialize whole block of memory

a. 0417

b. 0714

c. 0174, 0720

d. 0741

25 / 30

Category: CS401-mid

____________ of the following flags will be affected by MOVSB?

a. DF

b. PF

c. No effect on flags.

d. ZF

26 / 30

Category: CS401-mid

The physical address of the stack is obtained by

a. ES:BP combination

b. SS:SP combination

c. SS:SI combination

d. ES:SP combination

27 / 30

Category: CS401-mid

After the execution of STOSW, the CX will be

a. Decremented by 1

b. Incremented by 1

c. Incremented by 2

d. Decremented by 2

28 / 30

Category: CS401-mid

REP will always

a. incremented CX by 1

b. Decremented CX by 1

c. Incremented CX by 2

d. Decremented CX by 2

29 / 30

Category: CS401-mid

After the execution of SAR instruction

a. MSB move to left

b. MSB Will change

c. MSB remain as it is

d. No change will occur.

30 / 30

Category: CS401-mid

RETF will pop the offset in the

a. IP

b. SP

c. BP

d. SI

Your score is

The average score is 84%

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Note before downloading CS401 midterm past paper

One thing to note dear fellows that you must don’t rely on these papers only. They can be a source of help but not an ultimate solution. If you want to get good marks in your exams you are advised to go through all of your handouts and must watch all of the video lectures.

Golden rules for good marks in VU Exams.

As per my experience, I have developed some golden rules for getting good marks in Virtual University Exams based on experience. I got 3.96 CGPA by following these rules. So here they are:

Never miss your Quiz, Assignment, or GDB.
Always try to do your Assignment on your own.
Try your best to finish your video lectures 10 days before exams.
Try your best to read your handouts twice before exams.
Read forward attempt backward.
Never schedule more than one paper on the same day.
Your most difficult paper should have a gap of 1 or more days.
Toughest paper must be scheduled first.
Read questions forward and attempt backward.
Don’t waste your time during a paper on illegal activities.

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CS401 Midterm Past Paper online Practice Quiz

CS401 Midterm Past Paper

Practice Quiz from CS401 Midterm Past Paper

Note before downloading CS401 midterm past paper

Golden rules for good marks in VU Exams.

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