MPCO Online Test

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MPCO Online Test

Class: SE(CSE) Max Marks: 50 Note: All Questions are compulsory Each Question Carry 2 Marks 29/May/2020

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Name *

Roll No *

1) The Intel 8086 Microprocessor is a _______ processor? *

2 points

16 bits

32 bits

8 bits

4 bits

2) In Microprocessor 8086, address bus is ________ bit wide? *

2 points

20 bits

16 bits

12 bits

10 bits

3) The 16 bit flag of 8086 Microprocessor is responsible to indicate ___________? *

2 points

The condition of result of ALU operation

The condition of memory

The result of addition

The result of subtraction

4) The " IF " in flag register of 8086 Microprocessor is called as _________? *

2 points

Initial flag

Interrupt flag

Indicate flag

Inter flag

5) The index register are used to hold _______? *

2 points

Offset Address

Memory Register

Segment Memory

Offset Memory

6) 1 MB of memory in 8086 Microprocessor is divided into ______ size segments? *

2 points

64 KB

32 KB

20 KB

none of the above

7) ________ is used to write into memory? *

2 points

RD/WR

CLK

8) The RD, WR, M/IO is the heart of control for a _________ mode? *

2 points

Maximum Mode

Minimum Mode

Both Modes

None

9) In a minimum mode there is a ___________ mode of use on the system bus? *

2 points

Single

Double

Multiple

None

10) If MN/MX is low, then 8086 Microprocessor operates in __________ mode? *

2 points

Maximum

Minimum

Both modes

None of the modes (normal)

11) In maximum mode of 8086 Microprocessor, control bus signal S0, S1 and S2 are sent out in ____________ form? *

2 points

Encoded

Decoded

Shared

Unshared

12) _______ signal is generated by combining RD and WR signals with IO/M? *

2 points

Control

Memory

System

13) The primary function of the ___________ is to accept data from I/P devices? *

2 points

Peripherals

Multiprocessor

Microprocessor

Interfaces

14) An _________ is used to fetch one address? *

2 points

External Decoder

Internal Decoder

Encoder

15) ___________ signal prevent the Microprocessor from reading the same data more than one? *

2 points

Pipelining

Handshaking

Controlling

All of the above

16) __________ generate interrupt signal to Microprocessor and receive acknowledge? *

2 points

Priority Resolver

Control Logic

Interrupt Request Register

Interrupt Register

17) The _______ is used to connect more Microprocessors? *

2 points

Modem

Control Unit

Cascade

Transceiver

18) In 8086 Microprocessor, Example for Non maskable interrupt is ________? *

2 points

INTR

TRAP

RST 6.5

RST 6.6

19) In 8086 Microprocessor the following has the highest priority among all type interrupts? *

2 points

TYPE 255

DIV 0

NMI

OVER FLOW

20) Status register is also called as ___________? *

2 points

Accumulator

Flag

Stack

Counter

21) ALE stands for_________? *

2 points

Address Latch Enable

Address Level Enable

Address Leak Enable

Address Leak Extension

22) In 8086 Microprocessor the overflow flag is set when ____________. *

2 points

The sum is more than 16 bits

Signed numbers go out of their range after an arithmetic operation

Carry and sign flags are set

Subtraction

23) Which bus is bidirectional? *

2 points

Address bus

Control bus

Data bus

None of the above

24) Which is not part of the execution unit (EU)? *

2 points

Arithmetic logic unit (ALU)

CLock

General Registers

Flags

25) During a read operation the CPU fetches ________. *

2 points

A program instruction

Another address

Data itself

All of the above

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