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MPMC Quiz 1

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which of the following is the correct sequence of operations in a microprocessor?

a)

Opcode fetch, memory read, memory write, I/O read, I/O write

b)

Opcode fetch, memory write, memory read, I/O read, I/O write

c)

I/O read, opcode fetch, memory read, memory write, I/O write

d)

I/O read, opcode fetch, memory write, memory read, I/O write

2.

What is data bus width of 8086 microprocessor?

a)
32 bits
b)
64 bits
c)
8 bits
d)
16 bits
3.

what is the purpose of instruction byte queue in 8086 microprocessor?

a)
To execute arithmetic operations
b)
To store data from memory
c)
To prefetch instructions from memory and improve performance
d)
To control input/output operations
4.

In 8086 microprocessor, address bus width size is

a)
16 bits
b)
32 bits
c)
20 bits
d)
8 bits
5.

XCHG instruction on 8086 is used for

a)
Adding the contents of two registers
b)
Exchanging the contents of two registers or memory locations
c)
Subtracting the contents of two memory locations
d)
Multiplying the contents of two registers
6.

Which operations are not performed by ALU of 8086 microprocessor ?

a)
Input/output and memory-related operations
b)
Logical operations
c)
Multiplication and division operations
d)
Addition and subtraction operations
7.

What is maximum addressable size of RAM interfaced with 8086 microprocessor ?

a)
512 KB
b)
2 GB
c)
256 KB
d)
1 MB
8.

16 bit flag register of 8086 microprocessor is responsible for

a)
Controlling the input/output operations
b)
Storing status flags
c)
Managing the memory allocation
d)
Executing arithmetic operations
9.

Operating frequency of 8086 microprocessor is

a)
1 kHz
b)
10 MHz
c)
2 GHz
d)
5 MHz
10.

SF in 8086 microprocessor is called as

a)
Speed Flag
b)
Software Flag
c)
Sign Flag
d)
System Flag
11.

Index register in 8086 is used to hold

a)
I/O ports
b)
instruction set
c)
data values
d)
memory addresses
12.

Register AX is formed by grouping two registers namely

a)
BX and CX
b)
DX and SP
c)
SI and DI
d)
AH and AL
13.

Which of the following is not a status flag in microprocessor 8086?

a)
Overflow
b)

Interrupt

c)
Carry
d)
Zero
14.

PUSH instruction copies data from source to

a)
a random location in memory
b)
the middle of the stack
c)
the top of the stack
d)
the bottom of the stack
15.

Which among the following in not segment in 8086 memory

a)

Stack segment

b)

Code segment

c)

Data segment

d)

Heap segment

16.

Instruction MOV AX,4000 is belongs to which addressing mode?

a)
Immediate addressing mode
b)
Base addressing mode
c)
Register addressing mode
d)
Indirect addressing mode
17.

What it the width of Logical address and Physical address?

a)

16 bits, 16 bits

b)

8 bits , 16 bits

c)

16 bits , 20 bits

d)

8 bits, 20 bits

18.

Which among the following is example of Register Addressing mode

a)

MOV BX,0000

b)

MOV AX,CX

c)

MOV AX,[CX]

d)

MOV CX, [SI]

19.

BIU stands for

a)

Base Interchange Unit

b)

Bus Interchange Unit

c)

Bus Interface Unit

d)

Base Interface Unit

20.

If CS = 4444 H and IP = 8888 H , What is the 20 bit physical address generated from

a)

48880H

b)

4CCC8 H

c)

44440H

d)

8CCC4H