VU VICKY Virtual University Assignment Solution, Past Papers, Handouts and other material

Which of the following IRQs is derived by a keyboard?

IRQ 0

IRQ 1

IRQ 2

IRQ 3

Which of the following is the highest priority interrupt?

INT 3

INT 2

INT 1

INT 0

The input frequency of the Programmable Interval Timer (PIT) is.

fixed

depends on processor clock

variable

depends on hardware attached

IRQ is referred to:

Eight input signals

One output signal

Eight output signals

one input signal

The space where all the registers of a task are stored is called the:

control block

process control block

stack

Which of the following is a cascading interrupt?

IRQ 0

IRQ 1

IRQ2

IRQ3

Which of the following IRQ is connected to serial port COM 2?

IRQ 0

IRQ 1

IRQ 2

IRQ 3

The destination register in IN is:

AL or AX

BL or BX

CL or CX

DL or DX

Question # 2

Instruction Pointer holds the address of the  

 Previous instruction to be executed

 Current instruction

 Next instruction to be executed

 None of the given

Question # 3 of 10

Register whose each bit specify a different meaning is 

 Accumulator Register                                              

 Pointer Register 

 Index register 

 Flag register

Question # 4 of 10

Bydefault CS is associated with  

 SS

 BP

 CX

 IP  

Question # 5 of 10

Memory to Memory operation is allowed  

 True

 False

Question # 6 of 10

Size Mismatch Error is a syntax error  

 False        (Size mismatch is logical error)
 True  

Question # 7 of 10

unconditional jump can be   

 near

 short

 far

 all of the given

  

Question # 8 of 10

Register are storage cell  

 Outside the processor

 Both inside and outside the processor

 Inside the processor

 None of the given                       

Question # 9 of 10

Register to Register Operation is not allowed  

 True

 False

The operation of CMP is to Subtract source from destination

 True

 False

Size Mismatch Error is a syntax error

False

True

Unconditional jump

Execute in every condition whether true or false

If the condition is true

If the condition is false

None of the given

Which type of Rotation it is "Every bit moves one position to the right and the bit dropped from the right is inserted at the eft. This bit is also copied into the carry flag."

ROL

RCR

RCL

None of the given

Assembly languague is not a low level language.

true

False

In JA jump is not taken after a CMP if the unsigned destination is larger than the unsigned source.

True

False

Group of bits processor uses to inform memory which element to read/write is collectively known as

Control bus

Data bus

Address bus

RAM

Memory to Memory operation is allowed

True

False

90 is the op-code of

Do nothing

Add

Subtract

Multiplication

we can not add two base register i.e. (bx+bp) or cant use in an instruction

True

False

Intel follow

Littel endian

Big endian

Both littel endian and big endian

None of the given

SHL and SAL are same

True

False

The first 16-bit processor produced by "Intel" was 8085

True

False

The first 16-bit processor produced by "Intel" was 8085

True

False

The extension of assembly languague file is

.doc

.com

.lst

.asm

When a large number is subtracted from a smaller number, a borrow is needed; in this case which flag will be set

ZF

CF

SF

OF

All the addressing mechanisms in iAPX88 return a number called _____________ address.

Effective address

Physical address

Direct address

None of the given

Which type of shifting is "Inserts a zero from the left and moves every bit one position to the right and copies the rightmost bit in the carry flag."

SHL

SAL

SAR

None of the given

mov [1234],ax is an example of

Direct addressing

Base register indirect

Base+index

None of the given

Registers are also called scratch pad ram

True

False

The basic function of register is to?

Hold the operand

Hold the operator

Hold both the operator and operand

None of the given

The jump is taken if the last arithmetic operation changed the sign unexpectedly.

JO

JNO

JNZ

JZ

In JA jump is not taken after a CMP if the unsigned destination is larger than the unsigned source.

True

False

which type of rotation it is "The carry flag is inserted from the left, every bit moves one position to the right, and the right most bit is dropped in the carry flag. "

RCR

ROL

RCL

ROR

which type of rotation it is "The carry flag is inserted from the left, every bit moves one position to the right, and the right most bit is dropped in the carry flag. "

RCR

ROL

RCL

ROR

This jump is taken if the last arithmetic operation produced a number in its destination that has even parity , Which jump is taken

JP

JPE

JNP

both JP and JPE

In direct addressing the memory address given in the instruction is

When a large number is subtracted from a smaller number, a borrow is needed; in this case which flag will be set

ZF

CF

SF

OF

SHL and SAL are same

True

False

we can not Subrtace index register from the base register( bx-si )in assemlby language   

True

False

Group of bits processor uses to inform memory which element to read/write is collectively known as

Control bus

Data bus

Address bus

RAM

The programmable interval timer (PIT) has input frequency of
1.193MHZ
2.193MHZ
3.193MHZ
4.193MHZ

The parallel port connector is called ?
DB-25
BD-25
DB-24
BD-24

Threads can have function calls, parameters and __________ variables
Global
Local
Legal
Illegal

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

Assembler
Scheduler
Linker
Debugger 

The input frequency of the programmable interval timer (PIT) is
Fixed

Depends on processor clock
Variable
Depends on hardware attached

The instruction used to read a character from the keyboard port is
in al, 0x60
out al, 0x60
in al, 0x80
out al, 0x80

The INT 0x13 service 0x08 is use to
Read disk sector
Write disk sector
Reset disk sector
Get drive parameter

The first sector on hard disk contains the
Hard disk size
Partition table
Data size
Sector size

The number of pins in a parallel port connector are?
20
25
30
35

The INT 0x13 service 0x03 is use to
Read disk sector
Write disk sector
Reset disk sector
Get drive parameter

Which of the following interrupts is used for saving and restoring the registers

INT6
INT7
INT8
INT0

All the registers & stack are saved in
multitasking
multi-processing
function call
BIOS 

Which of the following pins of a parallel port connector are grounded ?
10-18
18-25
25-32
32-39

The space where all the registers of a task are stored is called the
control block
process control block
stack
memory