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

The physical address of the stack is obtained by

a. ES:BP combination

b. SS:SI combination

c. ES:SP combination

d. SS:SP combination

2 / 30

Category: CS401-mid

To transfer control back the RET instruction take

a. No arguments

b. 3 arguments

c. 1 argument

d. 1 argument

3 / 30

Category: CS401-mid

allow changing specific processor behaviors and are used to play with it.

a. Arithmetic and Logic Instructions

b. Special Instructions

c. Data Movement Instructions

d. Program Control Instructions

4 / 30

Category: CS401-mid

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

a. 0x0100

b. 0x0010

c. 0x0000

d. 0x1000

5 / 30

Category: CS401-mid

REP will always

a. incremented CX by 1

b. Decremented CX by 1

c. Decremented CX by 2

d. Incremented CX by 2

6 / 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. PUSH

b. RET

c. CALL

d. POP

7 / 30

Category: CS401-mid

In the instruction “CMP AX,BX” the contents of

a. CX are changed

b. Flag register are changed

c. BX are changed

d. AX are changed

8 / 30

Category: CS401-mid

____________ of the following flags will be affected by MOVSB?

a. PF

b. No effect on flags.

c. DF

d. ZF

9 / 30

Category: CS401-mid

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

a. White

b. Blue

c. Black

d. Red

10 / 30

Category: CS401-mid

Assembly language is:

a. Low-level programming language

b. High-level programming language

c. Also known as machine language

d. Not considered closer to the computer

11 / 30

Category: CS401-mid

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

a. Heap

b. None of the Given

c. Program

d. data structure

12 / 30

Category: CS401-mid

The execution of the instruction “mov word [ES: DI], 0x0720

a. will clear next character on screen

b. will print “20” at top left of the screen

c. will move DI at location 0720 on the screen

d. will print “20” at top right of the screen

13 / 30

Category: CS401-mid

When a 16 bit number is divided by an 8 bit number, the quotient will be in

a. AL

b. AX

c. AH

d. DX

14 / 30

Category: CS401-mid

The extended ASCII has

a. 256 characters

b. 64 characters

c. 502 characters

d. 128 characters

15 / 30

Category: CS401-mid

Code Segment is associated to _______ register by default.

a. BP

b. SS

c. CX

d. IP

16 / 30

Category: CS401-mid

While using STOBS, if DF=1 then

a. The value of SI will be decremented by two

b. The value of SI will be incremented by two

c. The value of SI will be decremented by one

d. The value of SI will be incremented by one

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. Jump will be taken

b. Zero flag will set

c. ZF will contain value -4

d. Jump will not be taken

18 / 30

Category: CS401-mid

The memory address always move from

a. processor to memory

b. peripheral to processor

c. memory to processor

d. memory to peripheral

19 / 30

Category: CS401-mid

All the addressing mechanisms iniAPX88 return a number called ______ address

a. Effective

b. indirect

c. direct

d. faulty

20 / 30

Category: CS401-mid

When two 16bit numbers are added the answer can be 17 bits long, this extra bit that won’t fit in the target register is placed in the where it can be used and tested

a. Zero Flag

b. carry flag

c. Auxiliary Carry

d. Parity Flag

21 / 30

Category: CS401-mid

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

a. ISR

b. IRT

c. IRS

d. ISP

22 / 30

Category: CS401-mid

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

a. Stack

b. Callee

c. RET

d. Caller

23 / 30

Category: CS401-mid

ASCII stands for ____________. The screen is two dimensional space having

a. 80 Rows and 25 Columns

b. 25 Rows and 25 Columns

c. 80 Rows and 80 Columns

d. 25 Rows and 80 Columns

24 / 30

Category: CS401-mid

The iAPX88 processor supports ___________ modes of memory access

a. 7

b. 5

c. 6

d. 8

25 / 30

Category: CS401-mid

After the execution of SAR instruction

a. No change will occur.

b. MSB remain as it is

c. MSB Will change

d. MSB move to left

26 / 30

Category: CS401-mid

RET is executed, it recovers the values from

a. Register

b. Data segment

c. Code segment

d. Stack

27 / 30

Category: CS401-mid

If the decimal number “35” is shifted by two bit to left, the new value will be

a. 70

b. 140

c. 35

d. 17

28 / 30

Category: CS401-mid

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

a. DF

b. CF

c. OF

d. None of Above

29 / 30

Category: CS401-mid

MOV instruction transfers a byte or word from which of the following source location.

a. ES:SI

b. ES:DI

c. DS:SI

d. DS:DI

30 / 30

Category: CS401-mid

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

a. 5

b. 6

c. 4

d. 3

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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To download the CS401 midterm past paper click here.

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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