CS401 Final Term Solved MCQs by Junaid

1. Suppose AL contains 5 decimal then after two left shifts produces the value as

•  5
•  10
•  15
•  20 (Page 52)

2. In graphics mode a location in video memory corresponds to a _____________ on the screen.

•  Line
•  Dot (Page 149)
•  Circle
•  Rectangle

3. Creation of threads can be

•  Static
•  Dynamic (Page 141)
•  Easy
•  Difficult

4. The thread registration code initializes the PCB and adds it to the linked list so that the __________ will give it a turn.

•  Assembler
•  Scheduler (Page 141)
•  linked
•  Debugger

5. VESA VBE 2.0 is a standard for

•  High resolution Mode (Page 180)

6. Which of the following gives the more logical view of the storage medium

•  BIOS
•  DOS (Page 155)
•  Both
•  None

Q7. Which of the following IRQs is derived by a key board?

•  IRQ 0
•  IRQ 1 (Page 114)
•  IRQ 2
•  IRQ 3

Q8. Which of the following IRQs is used for Floppy disk drive?

•  IRQ 4
•  IRQ 5
•  IRQ 6 (Page 114)
•  IRQ 7

Q9. Which of the following pins of a parallel port connector are grounded?

•  10-18
•  18-25 (Page 125)
•  25-32
•  32-39

10. The physical address of IDT (Interrupt Descriptor Table) is stored in _______

•  GDTR
•  IDTR (Page 182)
•  IVT
•  IDTT

11. In NASM an imported symbol is declared with the ............................ while and exported symbol is declared

With the............................

•  Global directive, External directive
•  External directive, Global directive (Page 189)
•  Home Directive, Foreign Directive
•  Foreign Directive, Home Directive

12. In 68K processors there is a ........................ program counter (PC) that holds the address of currently executing

Instruction

•  8bit
•  16bit
•  32bit (Page 191)
•  64bit

13. To reserve 8-bits in memory ___ directive is used.

•  db. (Page 25)
•  dw
•  dn
•  dd

14. In the “mov ax, 5” 5 is the __________ operand.

•  Source (Page 18)
•  Destination
•  Memory
•  Register

15. RETF will pop the segment address in the

•  CS register (Page 72)
•  DS register
•  SS register
•  ES register

16. For the execution of the instruction “DIV BL”, the implied dividend will be stored in

•  AX (Page 85)
•  BX
•  CX
•  DX

Q17. When a number is divided by zero “A Division by 0” interrupt is generated. Which instruction is used for this?

Purpose

•  INT 0
•  INT 1
•  INT 2
•  This interrupt is generated automatically (Page 107)

18. INT 21 service 01H is used to read character from standard input with echo. It returns the result in ______

Register.

•  AL (Page 152)
•  BL
•  CL
•  BH

19. BIOS sees the disks as

•  Logical storage
•  Raw storage (Page 155)
•  In the form of sectors only
•  In the form of tracks only

Q20. In 9pin DB 9, which pin number is assigned to CD (Carrier Detect)?

•  1 (Page 171)
•  2
•  3
•  4

21. In 9pin DB 9, Signal ground is assigned on pin number

•  4
•  5 (Page 171)
•  6
•  3

22. In 9pin DB 9, RI (Ring Indicator) is assigned on pin number

•  ► 6
•  ► 7