Multiple Choice Questions & Correct Answers :-
1) Which is the microprocessor comprises:
a.Register section
b.One or more ALU
c.Control unit
d.All of these
Correct Answers 
2) What is the store by register?
a.data
b.operands
c.memory
d.None of these
Correct Answers :A
3) Accumulator based microprocessor example are:
a.Intel 8085
b.Motorola 6809
c.A and B
d.None of these
Correct Answers :C
4) A set of register which contain are:
a.data
b.memory addresses
c.result
d.all of these
Correct Answers
5) There are primarily two types of register:
a.general purpose register
b.dedicated register
c.A and B
d.none of these
Correct Answers :C
6) Name of typical dedicated register is:
a.PC
b.IR
c.SP
d.All of these
Correct Answers
7) BCD stands for:
a.Binary coded decimal
b.Binary coded decoded
c.Both a & b
d.none of these
Correct Answers :A
8) Which is used to store critical pieces of data during subroutines and interrupts:
a.Stack
b.Queue
c.Accumulator
d.Data register
Correct Answers :A
9) The data in the stack is called:
a.Pushing data
b.Pushed
c.Pulling
d.None of these
Correct Answers :A
10) The external system bus architecture is created using from ______ architecture:
a.Pascal
b.Dennis Ritchie
c.Charles Babbage
d.Von Neumann
Correct Answers
11) The processor 80386/80486 and the Pentium processor uses _____ bits address bus:
a.16
b.32
c.36
d.64
Correct Answers :B
12) Which is not the control bus signal:
a.READ
b.WRITE
c.RESET
d.None of these
Correct Answers :C
13) PROM stands for:
a.Programmable read-only memory
b.Programmable read write memory
c.Programmer read and write memory
d.None of these
Correct Answers :A
14) EPROM stands for:
a.Erasable Programmable read-only memory
b.ectrically Programmable read write memory
c.Electrically Programmable read-only memory
d.None of these
Correct Answers :A
15) Each memory location has:
a.Address
b.Contents
c.Both A and B
d.None of these
Correct Answers :C
16) Which is the type of microcomputer memory:
a.Processor memory
b.Primary memory
c.Secondary memory
d.All of these
Correct Answers
17) Secondary memory can store____:
a.Program store code
b.Compiler
c.Operating system
d.All of these
Correct Answers
18) Secondary memory is also called____:
a.Auxiliary
b.Backup store
c.Both A and B
d.None of these
Correct Answers :C
19 Customized ROMS are called:
a.Mask ROM
b.Flash ROM
c.EPROM
d.None of these
Correct Answers :A
20) The RAM which is created using bipolar transistors is called:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.DDR RAM
Correct Answers :B
21) Which type of RAM needs regular referred:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.SD RAM
Correct Answers :A
22) Which RAM is created using MOS transistors:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.SD RAM
Correct Answers :A
23) A microprocessor retries instructions from :
a.Control memory
b.Cache memory
c.Main memory
d.Virtual memory
Correct Answers :C
24) The lower red curvy arrow show that CPU places the address extracted from the memory
location on the_____:
a.Address bus
b.System bus
c.Control bus
d.Data bus
Correct Answers :A
25) The CPU sends out a ____ signal to indicate that valid data is available on the data bus:
a.Read
b.Write
c.Both A and B
d.None of these
Correct Answers :B
26) The CPU removes the ___ signal to complete the memory write operation:
a.Read
b.Write
c.Both A and B
d.None of these
Correct Answers :A
27) BIU STAND FOR:
a.Bus interface unit
b.Bess interface unit
c.A and B
d.None of these
Correct Answers :A
28) EU STAND FOR:
a.Execution unit
b.Execute unit
c.Exchange unit
d.None of these
Correct Answers :A
29) Which are the four categories of registers:
a.General- purpose register
b.Pointer or index registers
c.Segment registers
d.Other register
e.All of these
Correct Answers :E
30) Eight of the register are known as:
a.General- purpose register
b.Pointer or index registers
c.Segment registers
d.Other register
Correct Answers :A
31) The four index register can be used for:
a.Arithmetic operation
b.Multipulation operation
c.Subtraction operation
d.All of these
Correct Answers :A
32) IP Stand for:
a.Instruction pointer
b.Instruction purpose
c.Instruction paints
d.None of these
Correct Answers :A
33) CS Stand for:
a.Code segment
b.Coot segment
c.Cost segment
d.Counter segment
Correct Answers :A
34) DS Stand for:
a.Data segment
b.Direct segment
c.Declare segment
d.Divide segment
Correct Answers :A
35) Which are the segment:
a.CS: Code segment
b.DS: data segment
c.SS: Stack segment
d.ES:extra segment
e.All of these
Correct Answers
36) The acculatator is 16 bit wide and is called:
a.AX
b.AH
c.AL
d.DL
Correct Answers :A
37) How many bits the instruction pointer is wide:
a.16 bit
b.32 bit
c.64 bit
d.128 bit
Correct Answers :A
38) How many type of addressing in memory:
a.Logical address
b.Physical address
c.Both A and B
d.None of these
Correct Answers :C
39) The size of each segment in 8086 is:
a.64 kb
b.24 kb
c.50 kb
d.16kb
Correct Answers :A
40) The _______ address of a memory is a 20 bit address for the 8086 microprocessor:
a.Physical
b.Logical
c.Both
d.None of these
Correct Answers :A
41) The pin configuration of 8086 is available in the________:
a.40 pin
b.50 pin
c.30 pin
d.20 pin
Correct Answers :A
42) DIP stand for:
a.Deal inline package
b.Dual inline package
c.Direct inline package
d.Digital inline package
Correct Answers :B
43) EA stand for:
a.Effective address
b.Electrical address
c.Effect address
d.None of these
Correct Answers :A
44) BP stand for:
a.Bit pointer
b.Base pointer
c.Bus pointer
d.Byte pointer
Correct Answers :B
45) DI stand for:
a.Destination index
b.Defect index
c.Definition index
d.Delete index
Correct Answers :A
46) SI stand for:
a.Stand index
b.Source index
c.Segment index
d.Simple index
Correct Answers :B
47) ALE stand for:
a.Address latch enable
b.Address light enable
c.Address lower enable
d.Address last enable
Correct Answers :A
48) NMI stand for:
a.Non mask able interrupt
b.Non mistake interrupt
c.Both
d.None of these
Correct Answers :A
49) ________ is the most important segment and it contains the actual assembly language
instruction to be executed by the microprocessor:
a.Data segment
b.Code segment
c.Stack segment
d.Extra segment
Correct Answers :B
50) The offset of a particular segment varies from _________:
a.000H to FFFH
b.0000H to FFFFH
c.00H to FFH
d.00000H to FFFFFH
Correct Answers :B
51) Which are the factor of cache memory:
a.Architecture of the microprocessor
b.Properties of the programs being executed
c.Size organization of the cache
d.All of these
Correct Answers
52) ________ is usually the first level of memory access by the microprocessor:
a.Cache memory
b.Data memory
c.Main memory
d.All of these
Correct Answers :A
53) Which is the small amount of high- speed memory used to work directly with the
microprocessor:
a.Cache
b.Case
c.Cost
d.Coos
Correct Answers :A
54) The cache usually gets its data from the_________ whenever the instruction or data is
required by the CPU:
a.Main memory
b.Case memory
c.Cache memory
d.All of these
Correct Answers :A
55) Microprocessor reference that are available in the cache are called______:
a.Cache hits
b.Cache line
c.Cache memory
d.All of these
Correct Answers :A
56) Microprocessor reference that are not available in the cache are called_________:
a.Cache hits
b.Cache line
c.Cache misses
d.Cache memory
Correct Answers :C
57) Which causes the microprocessor to immediately terminate its present activity:
a.RESET signal
b.INTERUPT signal
c.Both
d.None of these
Correct Answers :A
58) Which is responsible for all the outside world communication by the microprocessor:
a.BIU
b.PIU
c.TIU
d.LIU
Correct Answers :A
59) INTR: it implies the__________ signal:
a.INTRRUPT REQUEST
b.INTRRUPT RIGHT
c.INTRRUPT RONGH
d.INTRRUPT RESET
Correct Answers :A
60) Which of the following are the two main components of the CPU?
a.Control Unit and Registers
b.Registers and Main Memory
c.Control unit and ALU
d.ALU and bus
Correct Answers :C
61) Different components n the motherboard of a PC unit are linked together by sets of parallel
electrical conducting lines. What are these lines called?
a.Conductors
b.Buses
c.Connectors
d.Consecutives
Correct Answers :B
62) The language that the computer can understand and execute is called
a.Machine language
b.Application software
c.System program
d.All of the above
Correct Answers :A
63) Which of the following is used as a primary storage device?
a.Magnetic drum
b.PROM
c.Floppy disk
d.All of these
Correct Answers :B
64) Which of the following memories needs refresh?
a.SRAM
b.DRAM
c.ROM
d.All of above
Correct Answers :B
65) The memory which is programmed at the time it is manufactured
a.PROM
b.RAM
c.PROM
d.EPROM
Correct Answers :A
66) Which of the following memory medium is not used as main memory system?
a.Magnetic core
b.Semiconductor
c.Magnetic tape
d.Both a and b
Correct Answers :C
67) Registers, which are partially visible to users and used to hold conditional, are known as
a.PC
b.Memory address registers
c.General purpose register
d.Flags
Correct Answers :C
68) One of the main feature that distinguish microprocessors from micro-computers is
a.Words are usually larger in microprocessors
b.Words are shorter in microprocessors
c.Microprocessor does not contain I/O devices
d.Exactly the same as the machine cycle time
Correct Answers :C
69) The first microprocessor built by the Intel Corporation was called
a.8008
b.8080
c.4004
d.8800
Correct Answers :C
70) An integrated circuit is
a.A complicated circuit
b.An integrating device
c.Much costlier than a single transistor
d.Fabricated on a tiny silicon chip
Correct Answers
71) Most important advantage of an IC is its
a.Easy replacement in case of circuit failure
b.Extremely high reliability
c.Reduced cost
d.Low powers consumption
Correct Answers :B
72) Which of the following items are examples of storage devices?
a.Floppy / hard disks
b.CD-ROMs
c.Tape devices
d.All of the above
Correct Answers
73) The Width of a processor’s data path is measured in bits. Which of the following are common
data paths?
a.8 bits
b.12 bits
c.16 bits
d.32 bits
Correct Answers :A
74) Which is the type of memory for information that does not change on your computer?
a.RAM
b.ROM
c.ERAM
d.RW / RAM
Correct Answers :B
75) What type of memory is not directly addressable by the CPU and requires special softw3are
called EMS (expanded memory specification)?
a.Extended
b.Expanded
c.Base
d.Conventional
Correct Answers :B
76) Before a disk can be used to store data. It must be…….
a.Formatted
b.Reformatted
c.Addressed
d.None of the above
Correct Answers :A
77) Which company is the biggest player in the microprocessor industry?
a.Motorola
b.IBM
c.Intel
d.AMD
Correct Answers :C
78) A typical personal computer used for business purposes would have… of RAM.
a.4 KB
b.16 K
c.64 K
d.256 K
Correct Answers
78) The word length of a computer is measured in
a.Bytes
b.Millimeters
c.Meters
d.Bits
Correct Answers
79) What are the three decisions making operations performed by the ALU of a computer?
a.Grater than
b.Less than
c.Equal to
d.All of the above
Correct Answers
80) Which part of the computer is used for calculating and comparing?
a.Disk unit
b.Control unit
c.ALU
d.Modem
Correct Answers :C
81) Can you tell what passes into and out from the computer via its ports?
a.Data
b.Bytes
c.Graphics
d.Pictures
Correct Answers :A
82) What is the responsibility of the logical unit in the CPU of a computer?
a.To produce result
b.To compare numbers
c.To control flow of information
d.To do math’s works
Correct Answers :B
83) The secondary storage devices can only store data but they cannot perform
a.Arithmetic Operation
b.Logic operation
c.Fetch operations
d.Either of the above
Correct Answers
84) Which of the following memories allows simultaneous read and write operations?
a.ROM
b.RAM
c.EPROM
d.None of above
Correct Answers :B
85) Which of the following memories has the shortest access times?
a.Cache memory
b.Magnetic bubble memory
c.Magnetic core memory
d.RAM
Correct Answers :A
86) A 32 bit microprocessor has the word length equal to
a.2 byte
b.32 byte
c.4 byte
d.8 byte
Correct Answers :C
87) An error in computer data is called
a.Chip
b.Bug
c.CPU
d.Storage device
Correct Answers :B
88) The silicon chips used for data processing are called
a.RAM chips
b.ROM chips
c.Micro processors
d.PROM chips
Correct Answers
89) The metal disks, which are permanently housed in, sealed and contamination free containers
are called
a.Hard disks
b.Floppy disk
c.Winchester disk
d.Flexible disk
Correct Answers :C
90) A computer consists of
a.A central processing unit
b.A memory
c.Input and output unit
d.All of the above
Correct Answers
91) The instructions for starting the computer are house on
a.Random access memory
b.CD-Rom
c.Read only memory chip
d.All of above
Correct Answers :C
92) The ALU of a computer normally contains a number of high speed storage element called
a.Semiconductor memory
b.Registers
c.Hard disks
d.Magnetic disk
Correct Answers :B
93) The first digital computer built with IC chips was known as
a.IBM 7090
b.Apple – 1
c.IBM System / 360
d.VAX-10
Correct Answers :C
94) Which of the following terms is the most closely related to main memory?
a.Non volatile
b.Permanent
c.Control unit
d.Temporary
Correct Answers
95) Which of the following is used for manufacturing chips?
a.Control bus
b.Control unit
c.Parity unit
d.Semiconductor
Correct Answers
96) To locate a data item for storage is
a.Field
b.Feed
c.Database
d.Fetch
Correct Answers
97) A directly accessible appointment calendar is feature of a … resident package
a.CPU
b.Memory
c.Buffer
d.ALU
Correct Answers :B
98) The term gigabyte refers to
a.1024 bytes
b.1024 kilobytes
c.1024 megabytes
d.1024 gigabyte
Correct Answers :C
99) A/n …. Device is any device that provides information, which is sent to the CPU
a.Input
b.Output
c.CPU
d.Memory
Correct Answers :A
100) Current SIMMs have either … or … connectors (pins)
a.9 or 32
b.30 or 70
c.28 or 72
d.30 or 72
Correct Answers