CS401 Solved MCQs

CS401 Solved MCQs Computer Architecture and Assembly Language

CS401 Latest solved quizzes

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                                               vuzs

 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

 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 language 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

Little Endean

Big Endean

Both little Endean and big Endean

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 language 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

 www.vuzs.net

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 Subtracted index register from the base register( bx-si )in assemlby language   vuzs

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

By HSE with 1 comment