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