4320 + Mcqs in Computer Science Page 30 McqOptions

1451.	Cyclic codes are used in
A.	data transfer
B.	continuously varying signal representation
C.	arithmetic and logical computation
D.	All of the above
E.	None of the above
Answer» C. arithmetic and logical computation

Discussion

1452.	The digits used in a binary number system are _____ and _____
A.	9 and 0
B.	0 and 1
C.	1 and 2
D.	3 and 4
E.	None of the above
Answer» C. 1 and 2

Discussion

1453.	The 2-input XOR gate has a high output only when the input bits are _____
A.	even
B.	different
C.	low
D.	high
E.	None of the above
Answer» C. low

Discussion

1454.	Which of the following TTL subfamily is the fastest
A.	standard TTL
B.	high-speed TTL
C.	schottky TTL
D.	low-speed TTL
E.	None of the above
Answer» D. low-speed TTL

Discussion

1455.	The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers.
A.	sign, remainder
B.	sign, magnitude
C.	value, sign
D.	variable, value
E.	None of the above
Answer» C. value, sign

Discussion

1456.	Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.
A.	SSI, 75
B.	SSI, 100
C.	SSI, 1000
D.	SSI, 10000
E.	None of the above
Answer» C. SSI, 1000

Discussion

1457.	The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to _____ and vice versa.
A.	decimal
B.	binary
C.	ASCE
D.	BCD
E.	None of the above
Answer» C. ASCE

Discussion

1458.	A _____ is a group of devices that store digital data.
A.	circuits
B.	register
C.	variations
D.	bit
E.	None of the above
Answer» C. variations

Discussion

1459.	Semiconductor memory is:
A.	somewhat slower than magnetic core memory
B.	a volatile memory
C.	somewhat larger than the magnetic core memory
D.	All of the above
E.	None of the above
Answer» C. somewhat larger than the magnetic core memory

Discussion

1460.	The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is
A.	fanout
B.	bipolar
C.	chip
D.	universal logic circuit
E.	None of the above
Answer» B. bipolar

Discussion

1461.	The output of the following gate is 0 only if at least one of the inputs is 1:
A.	AND gate
B.	OR gate
C.	EX-OR gate
D.	NOR gate
E.	None of the above
Answer» E. None of the above

Discussion

1462.	In which of the following adder circuits, the carry look ripple delay is eliminated?
A.	Half adder
B.	Full adder
C.	Parallel adder
D.	Carry-look-ahead adder
E.	None of the above
Answer» E. None of the above

Discussion

1463.	With positive clocking the clock signal must be _____ for the flip-flop to respond.
A.	high
B.	low
C.	set
D.	race
E.	None of the above
Answer» B. low

Discussion

1464.	A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.
A.	hexa, sign
B.	sign, hexa
C.	positive, negative
D.	negative, positive
E.	None of the above
Answer» D. negative, positive

Discussion

1465.	The number of binary bits required to represent a hexadecimal digit is
A.	3
B.	4
C.	6
D.	8
E.	None of the above
Answer» C. 6

Discussion

1466.	Instead of counting with binary numbers, a ring counter uses words that have a single high _____
A.	bytes
B.	bit
C.	gate
D.	chip
E.	None of the above
Answer» C. gate

Discussion

1467.	Computer ICs work reliably because they are based on _____ design.
A.	Top-bottom
B.	System
C.	Two-stage
D.	Two-states
E.	None of the above
Answer» E. None of the above

Discussion

1468.	The maximum count which a 6-bit binary word can represent is
A.	36
B.	64
C.	63
D.	65
E.	None of the above
Answer» D. 65

Discussion

1469.	A half-adder is also known as:
A.	AND circuit
B.	NAND circuit
C.	NOR circuit
D.	EX-OR circuit
E.	None of the above
Answer» E. None of the above

Discussion

1470.	Why are digital circuits easier to design than analog circuits?
A.	they do not control electricity precisely over a wide range
B.	they are made in the form of ICs
C.	all elements of digital circuit are from the same family
D.	they are smaller in size
E.	None of the above
Answer» B. they are made in the form of ICs

Discussion

1471.	What is the decimal equivalent of 210?
A.	4096
B.	1024
C.	1000
D.	16
E.	None of the above
Answer» C. 1000

Discussion

1472.	What logic function is produced by adding an inverter to the output of an AND gate?
A.	NAND
B.	NOR
C.	XOR
D.	OR
E.	None of the above
Answer» B. NOR

Discussion

1473.	The NOR gate is logically equivalent to an OR gate followed by an _____
A.	AND
B.	XAND
C.	XOR
D.	inverter
E.	None of the above
Answer» E. None of the above

Discussion

1474.	The dynamic race hazard problem occurs in
A.	combinational circuits only
B.	sequential circuits only
C.	both combinational and sequential circuits
D.	none of the combinational and sequential circuits
E.	None of the above
Answer» E. None of the above

Discussion

1475.	What is the 1's complement of 0000 1111 0010 1101 number?
A.	1111 0000 0010 1101
B.	1111 0000 1101 0010
C.	1111 1100 1010 1100
D.	1001 0010 1010 1100
E.	None of the above
Answer» C. 1111 1100 1010 1100

Discussion

1476.	The 2's compliment of binary number 010111.1100 is
A.	101001.1100
B.	101000.0100
C.	010111.0011
D.	101000.0011
E.	None of the above
Answer» C. 010111.0011

Discussion

1477.	How many memory locations can 14 address bits access?
A.	16,384
B.	8,192
C.	4096
D.	14
E.	None of the above
Answer» B. 8,192

Discussion

1478.	The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.
A.	OR
B.	AND
C.	NAND
D.	XOR
E.	None of the above
Answer» E. None of the above

Discussion

1479.	The ASCII code is a 7-bit code for
A.	letters
B.	numbers
C.	other symbols
D.	All of the above
E.	None of the above
Answer» E. None of the above

Discussion

1480.	A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output
A.	low
B.	high
C.	some low and some high
D.	0's
E.	None of the above
Answer» C. some low and some high

Discussion

1481.	What logic function is obtained by adding an inverter to the output of an AND gate?
A.	OR
B.	NAND
C.	XOR
D.	NOR
E.	None of the above
Answer» C. XOR

Discussion

1482.	The control and arithmetic-logic sections are called the _____
A.	Block diagram
B.	Control Unit
C.	Input / Output Unit
D.	Central Processing Unit
E.	None of the above
Answer» E. None of the above

Discussion

1483.	How many full adders are required to construct an m- bit parallel adder?
A.	m/2
B.	m-1
C.	m
D.	m+1
E.	None of the above
Answer» D. m+1

Discussion

1484.	For what logic gate the outputs in complement of the input?
A.	NOT
B.	AND
C.	OR
D.	XOR
E.	None of the above
Answer» B. AND

Discussion

1485.	Resistor Ratio design is used in linear ICs because
A.	Ratios increase input resistance
B.	Ratios increase amplifier gain
C.	Precise resistor values are not possible with IC processes
D.	All of the above
E.	None of the above
Answer» D. All of the above

Discussion

1486.	What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitary in less area)
A.	Smaller size
B.	Higher reliability
C.	Lower cost
D.	All of the above
E.	None of the above
Answer» E. None of the above

Discussion

1487.	The logic 1 in positive logic system is represented by:
A.	zero voltage
B.	lower voltage level
C.	higher voltage level
D.	negative voltage
E.	None of the above
Answer» D. negative voltage

Discussion

1488.	The number of two-input NAND gates required to produce the two-input OR function is
A.	1
B.	2
C.	3
D.	4
E.	None of the above
Answer» D. 4

Discussion

1489.	A multiplexer is also known as
A.	coder
B.	decoder
C.	data selector
D.	multivibrator
E.	None of the above
Answer» D. multivibrator

Discussion

1490.	Standard TTL has a multiple emitter input transistor and a _____ output
A.	totem-pole
B.	bipolar
C.	register
D.	transistor
E.	None of the above
Answer» B. bipolar

Discussion

1491.	A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.
A.	light, eight, clock
B.	right, eight, clock
C.	bits, one, register
D.	bits, one, clock
E.	None of the above
Answer» E. None of the above

Discussion

1492.	The fan-out capability of a digital building block can be defined as
A.	the number of inputs that one output can transmit to
B.	the amount of cooling required for fanning the hear out
C.	the number of inputs that can transmit to one input
D.	the maximum power dissipation (heat generation) that the unit can stand.
E.	None of the above
Answer» B. the amount of cooling required for fanning the hear out

Discussion

1493.	What is the main advantage of using MOSFET rather than bipolar transistor circuitary in ICs?
A.	much greater complexity (more components) than bipolar circuits : better economy
B.	higher operating speed than bipolar circuits
C.	fewer power supply connections are required with MOS ICs
D.	system designers are more familiar with MOS circuitary
Answer» B. higher operating speed than bipolar circuits

Discussion

1494.	A storage area used to store data to compensate for the difference in speed at which the different units can handle data is
A.	Memory
B.	Buffer
C.	Accumulator
D.	Address
E.	None of the above
Answer» C. Accumulator

Discussion

1495.	High-level languages are not concerned with computer but with
A.	Assembler
B.	Machine code
C.	Compiler
D.	All of the above
E.	None of the above
Answer» B. Machine code

Discussion

1496.	Output hardware is often categorized according to whether it:
A.	is expensive
B.	requires a large amount of electricity to work
C.	produces hardcopy or softcopy
D.	can fit on a desktop
E.	None of the above
Answer» D. can fit on a desktop

Discussion

1497.	EDP auditing has become popular since
A.	1980
B.	1950
C.	1970
D.	1975
E.	None of the above
Answer» D. 1975

Discussion

1498.	Which of the following is not a desired characteristic of objectives?
A.	understandable
B.	relistic
C.	valid
D.	ambitious
E.	None of the above
Answer» E. None of the above

Discussion

1499.	Marketing research does not normally
A.	gather environmental information
B.	provide a continuous source of information
C.	relate to all aspects of marketing operations
D.	describe the current situation
E.	None of the above
Answer» C. relate to all aspects of marketing operations

Discussion

1500.	Quantitative techniques used to solve business problems are called
A.	operations management
B.	operations science
C.	operations research
D.	management operations
E.	None of the above
Answer» D. management operations

Discussion

Explore topic-wise MCQs in Engineering.

Cyclic codes are used in

The digits used in a binary number system are _____ and _____

The 2-input XOR gate has a high output only when the input bits are _____

Which of the following TTL subfamily is the fastest

The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers.

Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.

The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to _____ and vice versa.

A _____ is a group of devices that store digital data.

Semiconductor memory is:

The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is

The output of the following gate is 0 only if at least one of the inputs is 1:

In which of the following adder circuits, the carry look ripple delay is eliminated?

With positive clocking the clock signal must be _____ for the flip-flop to respond.

A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

The number of binary bits required to represent a hexadecimal digit is

Instead of counting with binary numbers, a ring counter uses words that have a single high _____

Computer ICs work reliably because they are based on _____ design.

The maximum count which a 6-bit binary word can represent is

A half-adder is also known as:

Why are digital circuits easier to design than analog circuits?

What is the decimal equivalent of 210?

What logic function is produced by adding an inverter to the output of an AND gate?

The NOR gate is logically equivalent to an OR gate followed by an _____

The dynamic race hazard problem occurs in

What is the 1's complement of 0000 1111 0010 1101 number?

The 2's compliment of binary number 010111.1100 is

How many memory locations can 14 address bits access?

The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.

The ASCII code is a 7-bit code for

A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output

What logic function is obtained by adding an inverter to the output of an AND gate?

The control and arithmetic-logic sections are called the _____

How many full adders are required to construct an m- bit parallel adder?

For what logic gate the outputs in complement of the input?

Resistor Ratio design is used in linear ICs because

What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitary in less area)

The logic 1 in positive logic system is represented by:

The number of two-input NAND gates required to produce the two-input OR function is

A multiplexer is also known as

Standard TTL has a multiple emitter input transistor and a _____ output

A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.

The fan-out capability of a digital building block can be defined as

What is the main advantage of using MOSFET rather than bipolar transistor circuitary in ICs?

A storage area used to store data to compensate for the difference in speed at which the different units can handle data is

High-level languages are not concerned with computer but with

Output hardware is often categorized according to whether it:

EDP auditing has become popular since

Which of the following is not a desired characteristic of objectives?

Marketing research does not normally

Quantitative techniques used to solve business problems are called

The digits used in a binary number system are _ and _

The leading bit stands for the _ and the remaining bits for the _ is known as signed binary numbers.

Small-scale integration, abbreviated _ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _ gates per chip.

A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _ decimal numbers, and 2's complements stand for _ decimal numbers.

A shift register moves the ___ left or right. Serial loading means storing a word in a shift register by entering _ bit per clock pulse. With parallel or broadside loading, it takes only one ___ pulse to load the input word.