Friday, 6 March 2020

TRB(Teachers Recruitment Board) Computer Science Exam question bank 2020 Computer Instructor Part 1


MCQ
Computer Systems Architecture  - The Computer System - System Buses


Questions
Opt 1
Opt 2
Opt 3
Opt 4
Ans
A communication system that transfers data between the components inside a computer or between computers is called
Port
Bus
Registers
None of the Above
B
Which bus connects all the internal components of a computer such as CPU and memory to the main board(motherboard)?
Expansion Bus
External Bus
Internal Bus
None of the Above
C
A bus that connects a computer to Peripheral devices is called?
System Bus
Memory Bus
Front-Side Bus
External Bus
D
External Bus is also referred as?
System Bus
Memory Bus
Front-Side Bus
Expansion Bus
D
The Command to access the memory or the I/O device is carried by?
Address Bus
Data Bus
Control Bus
None of the Above
C
A computer bus that is used to specify a Physical address?
Address Bus
Data Bus
Control Bus
None of the Above
A
A bus that transfer data from one component to another or between computers is called?
Address Bus
Data Bus
Control Bus
None of the Above
B
RISC stands for?
Reverse Instruction Set Computer
Reverse Information Set Computer
Reduced Information Set Computer
Reduced Instruction Set Computer
D
________ is a register for Short-term, intermediate storage of arithmetic and logic data in a Computers CPU.
Accumulator
Bus
Buffer
None of the Above
A
_________ is a group of commands for a CPU in machine language
Information Set
Instruction Set
Buffer
None of the Above
B
In multiple bus organization, registers are collectively placed and referred as
Set registers
Register file
Register block
Map register
B
Bus which used to connect monitor to CPU is?
PCI bus
SCSI bus
Memory bus
Ram bus
B
To extend connectivity of processor bus we use?
PCI bus
SCSI bus
Controllers
Multiple bus
A
Main advantage of multiple bus organization over single bus is?
Reduction in a number of cycles for execution
Increase in size of registers
Better connectivity
Fast speed
A
ISA standard buses are used to connect?
RAM and processor
CPU and processor
Hard disk and processor
Sound drives and processor
C
To resolve the clash over the access of the system BUS we use ______
Multiple BUS
BUS arbitrator
Priority access
None of the mentioned
B
The device which is allowed to initiate data transfers on the BUS at any time is called _____
BUS master
Processor
BUS arbitrator
Controller
A
______ BUS arbitration approach uses the involvement of the processor
Centralised arbitration
Distributed arbitration
Random arbitration
All of the mentioned
A
The Centralised BUS arbitration is similar to ______ interrupt circuit
Priority
Parallel
Single
Daisy chain
D
When the processor receives the request from a device, it responds by sending _____
Acknowledge signal
BUS grant signal
Response signal
None of the mentioned
B
In Centralised Arbitration ______ is/are is the BUS master
Processor
DMA controller
Device
Both Processor and DMA controller
D
Once the BUS is granted to a device ___________
It activates the BUS busy line
Performs the required operation
Raises an interrupt
All of the mentioned
A
The BUS busy line is made of ________
Open-drain circuit
Open-collector circuit
EX-OR circuit
NOR circuit
B
After the device completes its operation _____ assumes the control of the BUS
Another device
Processor
Controller
None of the mentioned
B
The BUS busy line is used
To indicate the processor is busy
To indicate that the BUS master is busy
To indicate the BUS is already allocated
None of the mentioned
C
Distributed arbitration makes use of ______
BUS master
Processor
Arbitrator
4-bit ID
D
The main virtue for using single Bus structure is,
Fast data transfers
Cost effective connectivity and speed
Cost effective connectivity and ease of attaching peripheral devices
None of these
C
______ are used to over come the difference in data transfer speeds of various devices
Speed enhancing circuitory
Bridge circuits
Multiple Buses
Buffer registers
D
To extend the connectivity of the processor bus we use ______
PCI bus
SCSI bus
Controllers
Multiple bus
A
Which of the following would be a logical first step in troubleshooting a PC?
Check the computer CMOS
Define the circumstances of the problem
Call the vendor
Define what applications are being used
B
RAM stands for?
Random Access Memory
Read Access Memory
Read Arithmetic Memory
Random Arithmetic Memory
A
Teletypewriter terminal is an example of
Input devices
Output devices
Input/Output devices
Storage devices
C
Devices that accepts data from outside computer and transfer into CPU are called
Input devices
Digital devices
Analogue devices
Truth table peripherals
A
Central Processing Unit (CPU) consists of
Control unit
Arithmetic and logic unit
Main store
All of above
D
Devices which are used to receive data from central processing unit are classified as?
Output/Input devices
Digital devices
Signaled devices
Output devices
D
Place where large amounts of data are stored outside central processing unit is called
Backing store
Peripherals
Control unit
AL unit
A
Devices that are under control of computer and are directly connected to computer peripherals are termed as
Off-line devices
On-line devices
N gate device
IF gate device
B
If any instruction consist of any arithmetic operation, data is transferred to
Quantitative unit
Qualitative unit
Arithmetic and logical unit
Central Processing Unit
C
Devices such as mercury thermometer and kitchen scales are classified as
Digital devices
Analogue devices
Programmed devices
Signal led devices
B
If a quantity in device is treated as different set of separate values, device is said to be
Digital
Analogues
Signals
Computer
A
Material on which data is stored or an input/output is classified is termed as
Mini frame medium
Micro medium
Macro medium
Medium
D
Type of integrated circuit which consists of arithmetic unit, control unit and some main store is called a
Mega processor
Micro processor
Micro computers
Mega computers
B
Visual display unit is an example of
Output device
Input/Output devices
Backup devices
Mediums
B
Devices that are not connected to computers central processing unit are classified as
AND gate devices
OR gate devices
Off-line devices
On-line devices
C
Keyboard and mouse are
DC devices
Analogue devices
Truth table devices
Input devices
D
Large computers with wide range of peripheral devices are classified as
Mainframe computers
Mini frame computers
Mainframe processors
Peripheral interface
A
Computer for which processing is used to be done with help of microprocessors is termed as
Micro Processor
Micro Computers
Mega Processor
Mega Computers
B
Actual equipment of computer system that can be touched are
Hardware
Software
Applications
Bugs
A
Decoding and execution of instructions rapidly, one after another is called
AL unit
Backup device
Keyboard
Control unit
D
Input and Output devices such as monitors and keyboards are classified as
Arithmetic units
Control unit devices
Peripheral devices
Main store devices
C
ROM stands for
Read only memory
Random only memory
Readily object memory
Random available memory
A
Line printer, a voice synthesizer and computer terminal screen are classic examples of
Logic circuit devices
Analogue circuit devices
AND gate devices
Output devices
D
Devices that are controlled by central processing unit but are not a part of it are called
Peripheral devices
Arithmetic units
Control unit devices
Main store devices
A
Main categories of peripheral devices are
Input/output devices
On-line devices
Backing storage devices
Both a and c
D
Two type of memories RAM and ROM are part of
Backup memory
Main memory
Shorter memory
Long-term memory
B
Magnetic tape unit and magnetic disc unit are classic example of
Storage devices
Backing storage devices
On-line devices
Off-line devices
B
Device in which data is represented by continuous variable quantity is called
Analogue device
Computer device
System programs
Digital program
A
Small computers that are not microcomputers are classified as
Micro computers
Mini computers
Mainframe computers
Mega processors
B
Circuit consisting of different electronic components and connections are called
Integrated circuits
Interrelated circuits
Inverting circuits
Reversing circuits
A
Devices used to read to and write from central processing unit are classified as
Analogue circuit devices
AND gate devices
OR gate devices
Backing storage devices
D
Microprocessors that are used for one particular job are classified as
Dedicated microprocessors
Dedicated computers
Dedicated microcomputers
Dedicated mega computers
A
The following device allows the user to add external components to a computer system
Storage devices
Keyboards
Portal system boards
Diskettes
C
A removable direct-access storage medium containing multiple magnetic disks mounted vertically on a single-shaft is referred as
Tape pack
Disk pack
Cylinder
None of these
B
Diskette is a
A low-cost, thin flexible magnetic disk storage device
High volume storage device
Primary storage device
None of these
A
An optical Input device that is used to read documents printed in a special type font Is known as
Document reader
Documentation
Printer
None of these
A
Digitizer Is an Input device
Used to convert graphic and pictorial data Into binary Inputs for a digital computer
Used to convert graphic and pictorial data Into analog Inputs for a digital computer
Used for debugging
None of these
A
A storage devices where the access time Is etfectivefy independent of the location of the data is referred as
Direct access
Secondary storage
Primary storage
None of these
A
The tolal time elapsed between submission of command and data to a computer and getting the result of computation Is the
Access time
Response time
Entrance Time
None of these
B
Constant is a value written into a program instruction
That does not change during the execution of the program
That can change during the execution of the program
That can vary during the execution of the program
None of these
A
Technique of using disk space to make programs believe that the system contains more random access memory (RAM) than is actuaity available is called
Virtual memory
Secondary Memory
Primary memory
None of these
A
The hexadecimal number system has a base of
16
2
4
8
A
Communications device, combines transmissions from several devices into one line is
Concentrator
Multiplexer
Modifier
Full-duplex line
B
Which of the following devices can be used to directly input printed text
OCR
OMR
MICR
None of the above
A
Modem stands for
A type of secondary memory
Modulator demodulator
Mainframe operating device memory
None of the above
B
Which of the following does not represent on I/O device
Speaker which beeps
Joystick
Plotter
ALU
D
Terminal is
Device to give power supply to computer
Point at which data enters or leaves the computer
The last instruction in a program
Any input /output device
D
Magnetic tapes are good storage media for
Backup the low volume data
Backup the high volume data
Storing original but low volume data
Storing original but high volume data
B
ASCII code is a _______bit code
1
2
7
8
C
Memories which can be read only are called _______ memories
RAM
ROM
PROM
EPROM
B
The use of parity bit is for
Coding
Indexing
Error-detection
None of these
C
The following are basic types of record access methods
Sequential and random
Direct and immediate
Sequential and indexed
On-line and real-time
A
Auxiliary storage is
Secondary storage
Primary storage
Processing device
None of these
A
A semiconductor memory which allows the eraser of the information stored in it so that new information can be stored in it is referred as
EPROM
ROM
RAM
None of these
D
Which of the following is input or output device?
Monitors
Punched cards
Optical scanners
All the above
D
A floppy disk contains
Circular tracks only
Sectors only
Both circular tracks and sectors
None of the above
C
A computer can be defined as an electronic device that can be
Used to carry out arithmetical operation
Used to carry out logical functions
Accept and process data using a set of stored instructions
All of these
D
The total time elapsed between submission of command and data to a computer and getting the result of computation is the
Access time
Response time
Entrance time
None of these
B
A flat, circular plate coated with a magnetic material on which data can be stored by magnetization of portions of the flat surface is
Disk
Tape
Pen drive
None of these
A
An automatic machine that is made to perform routine human tasks is
Computer
Robot
Tanker
None of these
B
The access method used for magnetic tape is_________
Direct
Random
Sequential
None of the above
C
The primary memory of a personal computer consists
ROM only
RAM only
Both ROM and RAM
Memory module
C
An advantage of the laser printer in respect to impact printer is
It is quieter/faster
Output is of a high quality
Support wide range of type fonts
All the above
D
Magnetic tape can serve as
Input media
Output media
Secondary-storage media
All the above
D
In a disk system time required for a read/ write head to move to the track where the record to be read or written is stored is
Access time
Random time
Response time
Seek time
D
Following is not true for magnetic tape
Low cost
Direct-access storage medium
Compact and portable
Highly reliable
B
Buffer is device/storage area
Where data are temporarily stored
Where data is permanently stored
Where data error occurs
None of these
A
The following is an nonvolatile memory
ROM
RAM
LSI
VLSI
A
The can be programmed one time by either the manufacturer or the computer user. Once programmed, it cannot be modified
RAM
ROM
PROM
EPROM
C
Bubble Memory is
Nonvolatile
Volatile
Permanent
None of these
A
Cache memory is a
Small buffer storage
Permanent storage
Main memory
None of these
A
In Nonvolatile memory device
Data contained in them is not lost when the power turned off
Data contained in them is lost when the power turned off
Data contained in them is permanent and is not rewritable
None of these
A
Cache memory
Is a Static RAM
Increases the speed of processing by making current programs and data available to the CPU at a rapid rate
Both A & B are true
Both A & B are false
C

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