CS401 (Computer Architecture & Assembly Language Latest Quiz Before Mid

Question:-

Memory to Memory operation is allowed
Select correct option:

True
False

The other directive is “define word” or “dw” with the same syntax as “db” but reserving a whole word of __ bits instead of a byte.
Select correct option:

32
8
16
64

Question:-

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

True
False
Size Mismatch Error is a syntax error
Select correct option:
False
True
)

Question:-

Unconditional jump
Select correct option:
Execute in every condition whether true or false
If the condition is true
If the condition is false
None of the given

Question:-

Bydefault CS is associated with
Select correct option:
SS
BP
CX
IP

Question:-

Register whose each bit specify a different meaning is
Select correct option:
Accumulator Register
Pointer Register
Index register
Flag register

Question:-

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.”
Select correct option:
ROL
RCR
RCL
None of the given

Question:-

Assembly languague is not a low level language.
Select correct option:
True
False
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Question:-

In JA jump is not taken after a CMP if the unsigned destination is larger than the unsigned source.
Select correct option:
True
False

Question:-

Group of bits processor uses to inform memory which element to read/write is collectively known as
Select correct option:
Control bus
Data bus
Address bus
RAM

Question:-

Mechanism used to drop carry for making the calculated address valid is known as:
Select correct option:

Carry Overload
Overflow
Address Wraparound
None of the above

Question:-

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

True
False

Question:-

Physical address calculation depends on
Select correct option:

Base address
Effective address
Offset Address
None of the above

Question:-

Simple CMP instruction uses _____ operation
Select correct option:

Addition
Division
Subtraction
Multiplicaion

Question:-

SS is bydefult associated with
Select correct option:

BP
IP
SP
BP

Question:-

When a 32 bit number is divided by a 16 bit number, the remainder is of
Select correct option:

4 bits
8 bits
16 bits
32 bits

Question:-

Which of the following is not a valid instruction in assembly language?
Select correct option:

MOV AX, 55
MOV AX, BX
MOV CS, 0xb800
MOV BX, AX

Question:-

Memory to Memory operation is allowed
Select correct option:
True
False

Question:-

90 is the op-code of
Select correct option:
Do nothing
Add
Subtract
Multiplication

Question:-

we can not add two base register i.e. (bx+bp) or cant use in an instruction
Select correct option:
True
False

Question:-

Intel follow
Select correct option:
Littel endian
Big endian
Both littel endian and big endian
None of the given

Question:-

SHL and SAL are same
Select correct option:
True
False

Question:-

Register whose each bit specify a different meaning is
Select correct option:
Accumulator Register
Pointer Register
Index register
Flag register

Question:-

The first 16-bit processor produced by “Intel” was 8085
Select correct option:
True
False

Question:-

The first 16-bit processor produced by “Intel” was 8085
Select correct option:
True
False

Question:-

The extension of assembly languague file is
Select correct option:
.doc
.com
.lst
.asm

Question:-

Bydefault CS is associated with
Select correct option:
SS
BP
CX
IP

Question:-

When a large number is subtracted from a smaller number, a borrow is needed; in this case which flag will be set
Select correct option:
ZF
CF
SF
OF
sec(s)

Question:-

All the addressing mechanisms in iAPX88 return a number called _____________ address.
Select correct option:
Effective address
Physical address
Direct address
None of the given
sec(s)

Question:-

In direct addressing the memory address given in the instruction is
Select correct option:
Fixed
Variable
Register
sec(s)

Question:-

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.”
Select correct option:
SHL
SAL
SAR
None of the given
sec(s)

Question:-

mov [1234],ax is an example of
Select correct option:
Direct addressing
Base register indirect
Base+index
None of the given
sec(s)

Question:-

Registers are also called scratch pad ram
Select correct option:
True
False
sec(s)

Question:-

we can not Subrtace index register from the base register( bx-si )in assemlby language
Select correct option:
True
False
sec(s)

Question:-

Register are storage cell
Select correct option:
Outside the processor
Both inside and outside the processor
Inside the processor
None of the given
sec(s)

Question:-

Bydefault CS is associated with
Select correct option:
SS
BP
CX
IP

Question:-

In direct addressing the memory address given in the instruction is
Select correct option:
Fixed
Variable
Register

Question:-

The basic function of register is to
Select correct option:
Hold the operand
Hold the operator
Hold both the operator and operand
None of the given

Question:-

Instruction Pointer holds the address of the
Select correct option:
Previous instruction to be executed
Current instruction
Next instruction to be executed
None of the given

Question:-

Register to Register Operation is not allowed
Select correct option:
True
False

Question:-

Address is alway go from
Select correct option:
Processor to memory
Memory to processor
Memory to memory
None of the given

Question:-

CX register mostly use a
Select correct option:
Counter register
Flag register
Base register
Desination register

Question:-

The jump is taken if the last arithmetic operation changed the sign unexpectedly.
Select correct option:
JO
JNO
JNZ
JZ

Question:-

All the addressing mechanisms in iAPX88 return a number called _____________ address.
Select correct option:
Effective address
Physical address
Direct address
None of the given

Question:-

BP by default associated with
Select correct option:
CS
IP
SS
SP

Question:-

SHL and SAL are same
Select correct option:
True
False

Question:-

we can not Subrtace index register from the base register( bx-si )in assemlby language
Select correct option:
True
False

Question:-

Group of bits processor uses to inform memory which element to read/write is collectively known as
Select correct option:
Control bus
Data bus
Address bus
RAM

Question:-

In JA jump is not taken after a CMP if the unsigned destination is larger than the unsigned source.
Select correct option:
True
False

Question:-

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. ”
Select correct option:
RCR
ROL
RCL
ROR

Question:-

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. ”
Select correct option:
RCR
ROL
RCL
ROR

Question:-

This jump is taken if the last arithmetic operation produced a number in its destination that has even parity , Which
jump is taken
Select correct option:
JP
JPE
JNP
both JP and JPE

Question:-

In direct addressing the memory address given in the instruction is
Select correct option:
When a large number is subtracted from a smaller number, a borrow is needed; in this case which flag will be set
Select correct option:
ZF
CF
SF
OF

Question:-

The extension of assembly languague file is
Select correct option:
.doc
.com
.lst
.asm

Question:-

Assembly languague is not a low level language.
Select correct option:
True
False

Question:-

The basic function of register is to
Select correct option:
Hold the operand
Hold the operator
Hold both the operator and operand
None of the given