8085:Microprocessor. mcq Multiple Choice Questions & Answer |best interview question
8085 microprocessor softwaretechit
8085:Microprocessor.
Multiple Choice Questions & Answer:-
1) Which is the microprocessor comprises:
a.Register section
b.One or more ALU
c.Control unit
d.All of these
Answer:D
2) What is the store by register?
a.data
b.operands
c.memory
d.None of these
Answer:A
3) Accumulator based microprocessor example are:
a.Intel 8085
b.Motorola 6809
c.A and B
d.None of these
Answer:C
4) A set of register which contain are:
a.data
b.memory addresses
c.result
d.all of these
Answer:D
5) There are primarily two types of register:
a.general purpose register
b.dedicated register
c.A and B
d.none of these
Answer:C
6) Name of typical dedicated register is:
a.PC
b.IR
c.SP
d.All of these
Answer:D
7) BCD stands for:
a.Binary coded decimal
b.Binary coded decoded
c.Both a & b
d.none of these
Answer:A
8) Which is used to store critical pieces of data during subroutines and interrupts:
a.Stack
b.Queue
c.Accumulator
d.Data register
Answer:A
9) The data in the stack is called:
a.Pushing data
b.Pushed
c.Pulling
d.None of these
Answer:A
10) The external system bus architecture is created using from ______ architecture:
a.Pascal
b.Dennis Ritchie
c.Charles Babbage
d.Von Neumann
Answer:D
11) The processor 80386/80486 and the Pentium processor uses _____ bits address bus:
a.16
b.32
c.36
d.64
Answer:B
12) Which is not the control bus signal:
a.READ
b.WRITE
c.RESET
d.None of these
Answer: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
Answer: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
Answer:A
15) Each memory location has:
a.Address
b.Contents
c.Both A and B
d.None of these
Answer:C
16) Which is the type of microcomputer memory:
a.Processor memory
b.Primary memory
c.Secondary memory
d.All of these
Answer:D
17) Secondary memory can store____:
a.Program store code
b.Compiler
c.Operating system
d.All of these
Answer:D
18) Secondary memory is also called____:
a.Auxiliary
b.Backup store
c.Both A and B
d.None of these
Answer:C
19 Customized ROMS are called:
a.Mask ROM
b.Flash ROM
c.EPROM
d.None of these
Answer:A
20) The RAM which is created using bipolar transistors is called:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.DDR RAM
Answer:B
21) Which type of RAM needs regular referred:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.SD RAM
Answer:A
22) Which RAM is created using MOS transistors:
a.Dynamic RAM
b.Static RAM
c.Permanent RAM
d.SD RAM
Answer:A
23) A microprocessor retries instructions from :
a.Control memory
b.Cache memory
c.Main memory
d.Virtual memory
Answer: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
Answer: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
Answer: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
Answer:A
27) BIU STAND FOR:
a.Bus interface unit
b.Bess interface unit
c.A and B
d.None of these
Answer:A
28) EU STAND FOR:
a.Execution unit
b.Execute unit
c.Exchange unit
d.None of these
Answer: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
Answer:E
30) Eight of the register are known as:
a.General- purpose register
b.Pointer or index registers
c.Segment registers
d.Other register
Answer:A
31) The four index register can be used for:
a.Arithmetic operation
b.Multipulation operation
c.Subtraction operation
d.All of these
Answer:A
32) IP Stand for:
a.Instruction pointer
b.Instruction purpose
c.Instruction paints
d.None of these
Answer:A
33) CS Stand for:
a.Code segment
b.Coot segment
c.Cost segment
d.Counter segment
Answer:A
34) DS Stand for:
a.Data segment
b.Direct segment
c.Declare segment
d.Divide segment
Answer: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
Answer:D
36) The acculatator is 16 bit wide and is called:
a.AX
b.AH
c.AL
d.DL
Answer:A
37) How many bits the instruction pointer is wide:
a.16 bit
b.32 bit
c.64 bit
d.128 bit
Answer:A
38) How many type of addressing in memory:
a.Logical address
b.Physical address
c.Both A and B
d.None of these
Answer:C
39) The size of each segment in 8086 is:
a.64 kb
b.24 kb
c.50 kb
d.16kb
Answer: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
Answer:A
41) The pin configuration of 8086 is available in the________:
a.40 pin
b.50 pin
c.30 pin
d.20 pin
Answer:A
42) DIP stand for:
a.Deal inline package
b.Dual inline package
c.Direct inline package
d.Digital inline package
Answer:B
43) EA stand for:
a.Effective address
b.Electrical address
c.Effect address
d.None of these
Answer:A
44) BP stand for:
a.Bit pointer
b.Base pointer
c.Bus pointer
d.Byte pointer
Answer:B
45) DI stand for:
a.Destination index
b.Defect index
c.Definition index
d.Delete index
Answer:A
46) SI stand for:
a.Stand index
b.Source index
c.Segment index
d.Simple index
Answer:B
47) ALE stand for:
a.Address latch enable
b.Address light enable
c.Address lower enable
d.Address last enable
Answer:A
48) NMI stand for:
a.Non mask able interrupt
b.Non mistake interrupt
c.Both
d.None of these
Answer: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
Answer: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
Answer: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
Answer:D
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
Answer: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
Answer: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
Answer: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
Answer: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
Answer:C
57) Which causes the microprocessor to immediately terminate its present activity:
a.RESET signal
b.INTERUPT signal
c.Both
d.None of these
Answer:A
58) Which is responsible for all the outside world communication by the microprocessor:
a.BIU
b.PIU
c.TIU
d.LIU
Answer:A
59) INTR: it implies the__________ signal:
a.INTRRUPT REQUEST
b.INTRRUPT RIGHT
c.INTRRUPT RONGH
d.INTRRUPT RESET
Answer: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
Answer: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
Answer: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
Answer: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
Answer:B
64) Which of the following memories needs refresh?
a.SRAM
b.DRAM
c.ROM
d.All of above
Answer:B
65) The memory which is programmed at the time it is manufactured
a.PROM
b.RAM
c.PROM
d.EPROM
Answer: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
Answer: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
Answer: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
Answer:C
69) The first microprocessor built by the Intel Corporation was called
a.8008
b.8080
c.4004
d.8800
Answer: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
Answer:D
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
Answer: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
Answer:D
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
Answer: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
Answer: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
Answer: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
Answer:A
77) Which company is the biggest player in the microprocessor industry?
a.Motorola
b.IBM
c.Intel
d.AMD
Answer: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
Answer:D
78) The word length of a computer is measured in
a.Bytes
b.Millimeters
c.Meters
d.Bits
Answer:D
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
Answer:D
80) Which part of the computer is used for calculating and comparing?
a.Disk unit
b.Control unit
c.ALU
d.Modem
Answer:C
81) Can you tell what passes into and out from the computer via its ports?
a.Data
b.Bytes
c.Graphics
d.Pictures
Answer: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
Answer: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
Answer:D
84) Which of the following memories allows simultaneous read and write operations?
a.ROM
b.RAM
c.EPROM
d.None of above
Answer: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
Answer:A
86) A 32 bit microprocessor has the word length equal to
a.2 byte
b.32 byte
c.4 byte
d.8 byte
Answer:C
87) An error in computer data is called
a.Chip
b.Bug
c.CPU
d.Storage device
Answer:B
88) The silicon chips used for data processing are called
a.RAM chips
b.ROM chips
c.Micro processors
d.PROM chips
Answer:D
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
Answer:C
90) A computer consists of
a.A central processing unit
b.A memory
c.Input and output unit
d.All of the above
Answer:D
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
Answer: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
Answer: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
Answer: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
Answer:D
95) Which of the following is used for manufacturing chips?
a.Control bus
b.Control unit
c.Parity unit
d.Semiconductor
Answer:D
96) To locate a data item for storage is
a.Field
b.Feed
c.Database
d.Fetch
Answer:D
97) A directly accessible appointment calendar is feature of a … resident package
a.CPU
b.Memory
c.Buffer
d.ALU
Answer:B
98) The term gigabyte refers to
a.1024 bytes
b.1024 kilobytes
c.1024 megabytes
d.1024 gigabyte
Answer: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
Answer: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
Answer:D
