Computer MCQs 3rd Semester
Computer MCQs 3rd Semester
Computer MCQs 3rd Semester
Bs Physics
1. UNIVAC is
A) Universal Automatic Computer
B) Universal Array Computer
C) Unique Automatic Computer
D) Unvalued Automatic Computer
6. ASCII and EBCDIC are the popular character coding systems. What does EBCDIC
stand for?
A) Extended Binary Coded Decimal Interchange Code
B) Extended Bit Code Decimal Interchange Code
C) Extended Bit Case Decimal Interchange Code
D) Extended Binary Case Decimal Interchange Code
10. A storage area used to store data to a compensate for the difference in speed at which
the different units can handle data is
A) Memory
B) Buffer
C) Accumulator
D) Address
13. CD-ROM is a
A) Semiconductor memory
B) Memory register
C) Magnetic memory
D) None of above
15. Which type of computers uses the 8-bit code called EBCDIC?
A) Minicomputers
B) Microcomputers
C) Mainframe computers
D) Super computer
18. To produce high quality graphics (hardcopy) in color, you would want to use a/n
A) RGB monitor
B) Plotter
C) Ink-jet printer
D) Laser printer
21. The main electronic component used in first generation computers was
A) Transistors
B) Vacuum Tubes and Valves
C) Integrated Circuits
D) None of above
27. Which of the following storage devices can store maximum amount of data?
A) Floppy Disk
B) Hard Disk
C) Compact Disk
D) Magneto Optic Disk
28. Which computer was considered the first electronic computer until 1973 when court
invalidated the patent?
A) ENIAC
B) MARK I
C) Z3
D) ABC
29. A physical connection between the microprocessor memory and other parts of the
microcomputer is known as
A) Path
B) Address bus
C) Route
D) All of the above
30. High density double sided floppy disks could store _____ of data
A) 1.40 MB
B) 1.44 GB
C) 1.40 GB
D) 1.44 MB
31. A high quality CAD system uses the following for printing drawing and graphs
A) Dot matrix printer
B) Digital plotter
C) Line printer
D) All of the above
33. The accuracy of the floating-point numbers representable in two 16-bit words of a
computer is approximately
A) 16 digits
B) 6 digits
C) 9 digits
D) All of above
34. In most of the IBM PCs, the CPU, the device drivers, memory, expansion slots and
active components are mounted on a single board. What is the name of the board?
A) Motherboard
B) Daughterboard
C) Bredboard
D) Fatherboard
35. In most IBM PCs, the CPU, the device drives, memory expansion slots and active
components are mounted on a single board. What is the name of this board?
A) Motherboard
B) Breadboard
C) Daughter board
D) Grandmother board
37. A technique used by codes to convert an analog signal into a digital bit stream is known
as
A) Pulse code modulation
B) Pulse stretcher
C) Query processing
D) Queue management
41. Which of the following produces the best quality graphics reproduction?
A) Laser printer
B) Ink jet printer
C) Plotter
D) Dot matrix printer
47. Today’s computer giant IBM was earlier known by different name which was changes
in 1924. What was that name?
A) Tabulator Machine Co.
B) Computing Tabulating Recording Co.
C) The Tabulator Ltd.
D) International Computer Ltd.
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48. Before a disk drive can access any sector record, a computer program has to provide
the record’s disk address. What information does this address specify?
A) Track number
B) Sector number
C) Surface number
D) All of above
50. 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
52. If in a computer, 16 bits are used to specify address in a RAM, the number of addresses
will be
A) 216
B) 65,536
C) 64K
D) Any of the above
54. The terminal device that functions as a cash register, computer terminal, and OCR
reader is the:
A) Data collection terminal
B) OCR register terminal
C) Video Display terminal
D) POS terminal
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55. A set of flip flops integrated together is called ____
A) Counter
B) Adder
C) Register
D) None of the above
63. A register organized to allow to move left or right operations is called a ____
A) Counter
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B) Loader
C) Adder
D) Shift register
66. A set of information that defines the status of resources allocated to a process is
A) Process control
B) ALU
C) Register Unit
D) Process description
68. BCD is
A) Binary Coded Decimal
B) Bit Coded Decimal
C) Binary Coded Digit
D) Bit Coded Digit
69. When was the world’s first laptop computer introduced in the market and by whom?
A) Hewlett-Packard, 1980
B) Epson, 1981
C) Laplink Traveling Software Inc, 1982
D) Tandy Model-200, 1985
72. How many address lines are needed to address each machine location in a 2048 x 4
memory chip?
A) 10
B) 11
C) 8
D) 12
78. What type of control pins are needed in a microprocessor to regulate traffic on the bus,
in order to prevent two devices from trying to use it at the same time?
A) Bus control
B) Interrupts
C) Bus arbitration
D) Status
79. Where as a computer mouse moves over the table surface, the trackball is
A) Stationary
B) Difficult to move
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C) Dragged
D) Moved in small steps
81. Multi user systems provided cost savings for small business because they use a single
processing unit to link several
A) Personal computers
B) Workstations
C) Dumb terminals
D) Mainframes
82. 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
83. The word processing task associated with changing the appearance of a document is
A) Editing
B) Writing
C) Formatting
D) All of above
84. Nepal brought a computer for census of 2028 BS. This computer was of
A) first generation
B) second generation
C) third generation
D) fourth generation
91. What is required when more than one person uses a central computer at the same
time?
A) Light pen
B) Mouse
C) Digitizer
D) Terminal
92. Which of the following is the first computer to use Stored Program Concept?
A) UNIVAC
B) ENIAC
C) EDSAC
D) None of above
94. in which year was UK’s premier computing event called ?The which computer?
started?
A) 1980
B) 1985
C) 1986
D) 1987
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95. Once you load the suitable program and provide required data, computer does not need
human intervention. This feature is known as
A) Accuracy
B) Reliability
C) Versatility
D) Automatic
99. Modern Computers are very reliable but they are not
A) Fast
B) Powerful
C) Infallible
D) Cheap
Answer: d
Explanation: There are two main types of number systems : Positional & Non-positional.
Positional System uses digits for the representation whereas, non-positional number systems use
certain symbols for the representation of numbers. Octal is a type of positional number systems
with base 8.
Answer: a
Explanation: In a non-positional number system, 1 is represented as I, 2 as II, 3 as III, 4 as IIII
and therefore, 5 is represented as IIIII. This number system uses symbols for the representation
of digits.
Answer: a
Explanation: The statement is true. In a positional number system, base is the number of digits
the system comprises. For example, a binary number system comprises of only 2 digits, 0 and 1,
therefore its base is 2. Similarly, the decimal system comprises 10 digits 0 to 9, therefore its base
is 10.
Answer: c
Explanation: The LSB or the least significant bit is the rightmost digit at the zeros position. The
MSB or the most significant bit is the leftmost digit.
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5. A device that uses positional notation to represent a decimal number.
a) Abacus
b) Calculator
c) Pascaline
d) Computer
Answer: a
Explanation: Abacus was used to doing arithmetic calculations around 2500 years ago. Pascaline
was the pascal’s calculator by Blaise Pascal invented for doing laborious calculations.
Answer: a
Explanation: The 2’s complement is obtained by adding 1 to the 1s complement of a number. The
1’s complement of 5(0101) is 1010. For 2’s complement : 1010+1=1011.
Answer: b
Explanation: BCD is the binary coded decimal form of representation of numbers in 4 bits.E.g. The
BCD representation of 5 is 0101. BCD representation of 22 is 00100010.
8. 1 zettabyte = ______________
a) 1024 TB
b) 1024 EB
c) 1024 ZB
d) 1024 PB
Answer: b
Explanation: 1 ZB=1024 EB(exabyte)
1 EB=1024PB(petabyte)
1 YB(yottabyte)=1024ZB.
Answer: c
Explanation: BCD of 2 =0010
BCD of 3=0011
0010+0011=0101
Therefore, 2+3=0101(5).
Answer: a
Explanation: ASCII is an encoding standard which is used for communications worldwide. ASCII
codes are allotted to digits, special characters and alphabets for data communication purpose.
Answer: c
Explanation: A decimal number system consists of 10 digits from 0 to 9.
The definition of base describes it as a quantity to represent the number of digits present in that
particular number system.
Therefore, here, the base is 10.
2. Convert : (110)2 = ( __ )10.
a) 4
b) 5
c) 6
d) 9
Answer: c
Explanation: The base 2 represents that the number is binary ,whereas, the base 10 represents
that it is to be converted to the decimal format.
Conversion: 22 * 1 + 21 * 1 + 20 *0 = 6.
3. The 2’s complement of 15 is ____________
a) 0000
b) 0001
c) 0010
d) 0100
Answer: b
Explanation: 2’s complement is obtained by adding 1 to the 1’s complement of the number.
Here, Binary of 15 = 1111
1’s complement of 15= 0000
2’s complement of 15= 0000+1=0001.
4. Another name for base is __________
a) root
b) radix
c) entity
d) median
Answer: b
Explanation: Another name for base is radix. Base refers to the number of digits that a particular
number system consists of.
The base of decimal number system is 10, binary is 2 and so on.
5. The decimal equivalent of (0.101)2 will be ____________
a) 0.5
b) 0.625
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c) 0.25
d) 0.875
Answer: b
Explanation: Since the base is 2 , it could be easily guessed that the number is binary.
Conversion: 2-1 * 1 + 2-2 * 0 + 2-3 * 1 = 0.625.
6. The signed magnitude for -3 will be ___________
a) 00000011
b) 10000011
c) 11111101
d) 11111100
Answer: b
Explanation: Signed Magnitude of a number is a representation to determine if the number is
positive or negative.
If the MSB of a number is 0, the number is positive, else if it is 1 the number is negative.
Here, +3 = 00000011
-3= 100000011.
7. A number with both integer and a fractional part has digits raised to both positive and negative
powers of 2 in a decimal number system.
a) True
b) False
Answer: b
Explanation: In a decimal number system, a number with both integer and a fractional part has
digits raised to both positive and negative powers of 10 and not 2.
e.g. 22.34 = 2 * 101 + 2 * 100 + 3 * 10-1 + 4 * 10-2.
8. The hexadecimal representation of 14 is _______________
a) A
b) F
c) D
d) E
Answer: d
Explanation: The hexadecimal representations are as follows:
10 : A
11 : B
12 : C
13 : D
14 : E
15 : F.
9. Which of the following is not a decimal number?
a) 114
b) 43.47
c) 99.9A
d) 10101
Answer: c
Explanation: All the numbers except 99.9A are decimal numbers.
This number has a hexadecimal component A in it, therefore , it is not a valid decimal number.
The decimal equivalent of A is 10.
10. Select the incorrect option:
a) (101)10 = (1100101)2
b) G is valid in hexadecimal system.
c) C represents 12
d) The base of a decimal number system is 10.
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Answer: b
Explanation: G is not a valid hexadecimal number. In this system, only representations from A to E
are used to represent the numbers from 10 to 15. The base of the hexadecimal number system is
16.
Answer: a
Explanation: The Roman number system isn’t a positional number system since it uses symbols to
represent numbers.
The octal number system uses digits from 0-7, the binary number system uses digits from 0-1
whereas, the hexadecimal number system uses digits from 0-15.
Answer: a
Explanation: In a binary number system, the value of base or radix is 2. The binary system uses
only two digits for the representation of numbers, therefore its base id has chosen to be 2.
Answer: c
Explanation: To get the binary equivalent of any number, we need to divide the number by 2 and
obtain the remainders as :
computer-fundamentals-questions-answers-binary-number-system-q3
We then write the remainders in the reverse order as 1010 .
Answer: a
Explanation: Machine Language is written in binary codes only. It can be easily understood by the
computer and is very difficult for us to understand. A machine language, unlike other languages,
requires no translators or interpreters.
Answer: b
Explanation: The octal equivalent is obtained by grouping the numbers into three, from right to left
before decimal and from right to left after the decimal place.
Here,
computer-fundamentals-questions-answers-binary-number-system-q5
i.e. 145.12 is the octal equivalent of the number.
Answer: b
Explanation: In hexadecimal number system, 1110 = 15, which is represented by the alphabet E.
Some representations are:
A 10
B 11
C 12
D 13
E 14
F 15.
Answer: a
Explanation: A bit stands for a binary digit. A binary digit can have only two digits i.e. 0 or 1. A
binary number consisting of n-bits is called an n-bit number.
Answer: a
Explanation: To convert a binary number to its decimal equivalent follow these steps :
24 * 1 + 23 * 0 + 22 *1 + 21 * 0 + 20 * 1 = 21.
Therefore, the answer is 21.
Answer: c
Explanation: A binary number can have only two possible digits, 0 and 1. In the third option, there
is an alphabet E present which makes it an invalid binary number. Alphabets are only allowed in
the hexadecimal number system.
Answer: d
Explanation: The binary numbers should comprise only two digits 0 and 1.
Also, for the base, the value should be 2 and it should be written as a subscript enclosing the
entire number. Here, the fourth option gives the correct representation.
Answer: b
Explanation: The maximum value in any number system is one less than the value of the base.
The base in an octal number system is 8, therefore, the maximum value of the single digit is 7. It
takes digits from 0 to 7.
2. In a number system, each position of a digit represents a specific power of the base.
a) True
b) False
Answer: a
Explanation: In a number system, every digit is denoted by a specific power of base. Like in an
octal system, consider the number 113, it will be represented as :
82 * 1 + 81 * 1 + 80 *3.
3. The maximum number of bits sufficient to represent an octal number in binary is _______
a) 4
b) 3
c) 7
d) 8
Answer: b
Explanation: The octal number system comprises of only 8 digits. Hence, three bits (23 = 8) are
sufficient to represent any octal number in the binary format.
Answer: b
Explanation: Certain binary to octal representations are :
000=0
001=1
010=2
011=3
100=4
101=5
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110=6
111=7.
Answer: b
Explanation: To convert an octal number to decimal number:
81 * 2 + 80 * 2 = 16 + 2 = 18.
Hence, the decimal equivalent is 18.
Answer: c
Explanation: To obtain the octal equivalent, we take numbers in groups of 3, from right to left as :
000 010 010 100
0 2 2 4 = (224)<sub>8</sub>.
Answer: a
Explanation: Octal subtraction is done as follows:
417
– 232
________
165
The octal subtraction is the same as that of any other number system. The only difference is, like
in a decimal number system, we borrow a group of 10, in a binary system we borrow a group of 2,
in an octal number system, we borrow in groups of 8.
Answer: a
Explanation: The 1’s complement of a number is obtained by reversing the bits with value 1 to 0
and the bits with value 0 to 1.
Here, 0.101 gets converted to 1.010 in its 1’s complement format.
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10. Express the decimal format of the signed binary number (10010)2 .
a) 2
b) 12
c) -12
d) -2
Answer: d
Explanation: The first bit is the sign bit whereas the rest of the bits are magnitude bits. So the
number is: 0010 = 21 * 1 =2
But, the sign bit is 1, Therefore the answer is : (-2)10.
Answer: c
Explanation: The symbols A, B, C, D, E and F represent 10, 11, 12, 13, 14 and 15
respectively in a hexadecimal system. This system comprises of 15 numbers in total: digits
from 0-9 and symbols from A to F.
Answer: a
Explanation: In a hexadecimal number system, alphabets are used for the representation
of numbers from 10 to 15. Here, A represents 10, B represents 11 and C represents 12.
Therefore, it is a valid hexadecimal number.
Answer: b
Explanation: Certain binary to hexadecimal representations are :
1010=A
1011=B
1100=C
1101=D
1110=E
1111=F.
Answer: d
Explanation: To convert a hexadecimal number to decimal number:
161 * 5 + 160 * 2 = 80 + 2 = 82
Hence, the decimal equivalent is 82.
Answer: c
Explanation: To obtain the octal equivalent, we take numbers in groups of 3, from right to
left as :
tough-computer-fundamentals-questions-answers-q6
Answer: a
Explanation: Octal subtraction is done as follows:
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3A5
+ 1B2
________
557
In hexadecimal addition of alphabets, we add the corresponding numbers they represent
and then subtract the result from 16, then generate a carry of 1 to the next set of
numbers.
Here, 5+2=7
A+B=10+11=21-16=5
3+1+1(carry)=5.
Answer: a
Explanation: The 1’s complement of a number is obtained by reversing the bits with value
1 to 0 and the bits with value 0 to 1. Here, 10.11 gets converted to 01.00 in its 1’s
complement format. Further, to convert 1’s complement into 2’s, we add 1 to the result.
Here, 01.00+1=10.00.
Answer: c
SET-2
1) A presentation means ?
1. Display of products
2. Explaining the utility of products
3. A gift
4. Display of communication or skills
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Answer = B
2) The term CRM means ?
1. Customer Relationship Management
2. Customer Retention Manager
3. Customer's Relative Meet
4. Channel Root Market
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Answer = A
3) Why would a switch be used in a network in preference to a HUB ?
1. To reduce the network traffic
2. To prevent the spread of all viruses
3. To connect a computer directly to the internet
4. To manage password security at the work station
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Answer = A
4) What should be done to successfully convert the format of an image from BMP to
JPEG ?
1. Compress the file
2. Rename the image
3. Use the save as command
4. Change the image file extension
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Answer =C
5) A company regularly updates a user reference guide. Some staff are confused about
which of the printed document is the most current. What feature should be included in
the reference guide to eliminate this confusion ?
1. Data printed
2. Version number
3. Authors name
4. Copyright information
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Answer = B
6) The term associated with the processing of comparison speed is ?
1. FFTS
2. MPG
3. MIPS
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4. CPS
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Answer =C
7) The data from a spreadsheet needs to be imported into a database package. Which
file format would be the most appropriate when saving the spreadsheet file ?
1. CSV
2. HTML
3. PDF
4. RTF
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Answer =A
8) For reproducing sound the CD audio player uses a ?
1. Quartz Cristal
2. Titanium Needle
3. Laser Beam
4. Barium Titanium Ceramic
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Answer =C
9) Which of the following would indicate that the motherboard battery has failed ?
1. Operating system passwords are lost
2. Files on the hard disk are lost and corrupted
3. Hardware settings, including virtual memory reverts to default values
4. Hardware settings, including the current date and time reverts to default values
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Answer = D
10) Which of the following is essential component of communication cycle ?
1. A message
2. An interpreter
3. An email account
4. An internet connection
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Answer =A
SET-3
SET-4
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Question 2:
In OSI network architecture, the routing is performed by
a. network layer
b. data link layer
c. transport layer
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d. session layer
e. none of above
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Question 3:
Which of the following performs modulation and demodulation?
a. fiber optics
b. satellite
c. coaxial cable
d. modem
e. none of the above
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Question 4:
The process of converting analog signals into digital signals so they can be processed by a receiving
computer is referred to as:
a. modulation
b. demodulation
c. synchronizing
d. digitising
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Question 5:
How many OSI layers are covered in the X.25 standard?
a. Two
b. Three
c. Seven
d. Six
e. None of above
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Question 6:
Layer one of the OSI model is
a. physical layer
b. link layer
c. transport layer
d. network layer
e. none of above
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Question 7:
The x.25 standard specifies a
a. technique for start-stop data
b. technique for dial access
c. DTE/DCE interface
d. data bit rate
e. none of above
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Question 8:
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Which of the following communication modes support two-way traffic but in only one direction at a
time?
a. simplex
b. half duplex
c. three-quarters duplex
d. all of the above
e. none of the above
Question 9:
Which of the following might be used by a company to satisfy its growing communications needs?
a. front end processor
b. multiplexer
c. controller
d. concentrator
e. all of the above
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Question 10:
What is the number of separate protocol layers at the serial interface gateway specified by the X.25
standard?
a. 4
b. 2
c. 6
d. 3
3. none of the above
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Correct Answers:
1. a
2. a
3. d
4. d
5. b
6. a
7. c
8. b
9. e
10. d
SET-2
Question 1:
The interactive transmission of data within a time sharing system may be best suited to
a. simplex lines
b. half-duplex lines
c. full duplex lines
d. biflex-lines
Question 2:
Which of the following statement is incorrect?
a. The difference between synchronous and asynchronous transmission is the clocking derived from
the data in synchronous transmission.
b. Half duplex line is a communication line in which data can move in two directions, but not at the
same time.
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c. Teleprocessing combines telecommunications and DP techniques in online activities
d. Batch processing is the prefered processing mode for telecommunication operation.
Question 3:
Which of hte following is considered a broad band communication channel?
a. coaxial cable
b. fiber optics cable
c. microwave circuits
d. all of above
Question 4:
Which of the following is not a transmission medium?
a. telephone lines
b. coaxial cables
c. modem
d. microwave systems
Question 5:
Which of the following does not allow multiple uses or devices to share one communication line?
a. doubleplexer
b. multiplexer
c. concentrator
d. controller
Question 6:
Which of the following signal is not standard RS-232-C signal?
a. VDR
b. RTS
c. CTS
d. DSR
Question 7:
Which of the following statement is incorrect?
a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of
data on one communication line
b. HDLC is a standard synchronous communication protocol.
c. RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW
indicates that it is ready to accept data
d. RTS/CTS is the way the terminal indicates ringing
Question 8:
Which of the following is an advantage to using fiber optics data transmission?
a. resistance to data theft
b. fast data transmission rate
c. low noise level
d. all of above
Question 9:
Which of the following is required to communicate between two computers?
a. communications software
b. protocol
c. communication hardware
d. all of above including access to transmission medium
Question 10:
The transmission signal coding method of TI carrier is called
a. Bipolar
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b. NRZ
c. Manchester
d. Binary
Answers:
1. b
2. d
3. d
4. c
5. a
6. a
7. d
8. d
9. d
10. a
SET-3
Question 1:
Which data communication method is used to transmit the data over a serial communication link?
a. simplex
b. half-duplex
c. full-duplex
d. b and c
e. None of above
Question 2:
What is the minimum number of wires needed to send data over a serial communication link layer?
a. 1
b. 2
c. 4
d. 6
e. none of above
Question 3:
Which of the following types of channels moves data relatively slowly?
a. wide band channel
b. voice band challen
c. narrow band channel
Question 4:
Most data communications involving telegraph lines use:
a. simplex lines
b. wideband channel
c. narrowband channel
d. dialed service
Question 5:
A communications device that combines transmissions from several I/O devices into one line is a
a. concentrator
b. modifier
c. multiplexer
d. full-duplex line
Question 6:
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How much power (roughly) a light emitting diode can couple into an optical fiber?
a. 100 microwatts
b. 440 microwatts
c. 100 picowatts
d. 10 miliwatts
Question 7:
The synchronous modems are more costly than the asynchronous modems because
a. they produce large volume of data
b. they contain clock recovery circuits
c. they transmit the data with stop and start bits
d. they operate with a larger bandwidth
e. none of above
Question 8:
Which of the following statement is correct?
a. terminal section of a synchronous modem contains the scrambler
b. receiver section of a synchronous modem contains the scrambler
c. transmission section of a synchronous modem contains the scrambler
d. control section of a synchronous modem contains the scrambler
e. none of the above
Question 9:
In a synchronous modem, the digital-to-analog converter transmits signal to the
a. equilizer
b. modulator
c. demodulator
d. terminal
e. none of aobve
Question 10:
Which of the following communications lines is best suited to interactive processing applications?
a. narrow band channel
b. simplex lines
c. full duplex lines
d. mixed band channels
Answers
1. c
2. b
3. c
4. c
5. c
6. a
7. b
8. c
9. a
10. c
SET-4
Question:1
A remote batch-processing operation in which data is solely input to a central computer would require
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a. telegraphp line
b. simplex lines
c. mixed bad channel
d. all of above
Question 2:
A band is always equivalent to
a. a byte
b. a bit
c. 100 bits
d. none of above
Question 3:
The loss in signal power as light travels down the fiber is called
a. attenuation
b. progragation
c. scattering
d. interruption
Question 4:
Avalanche photodiode receivers can detect bits of transmitted data by receiving
a. 100 photons
b. 200 photons
c. 2000 photons
d. 300 photons
Question 5:
Communiction circuits that transmit data in both directions but not at the same time are operating in
a. a simplex mode
b. a half duplex mode
c. a full duplex mode
d. an asynchronous mode
Question 6:
An example of a medium speed, switched communications service is
a. series 1000
b. data phone 50
c. DDD
d. All of the above
Question 7:
In communication satellite, multiple repeaters are known as
a. detector
b. modulator
c. stations
d. transponders
Question 8:
While transmitting odd-parity coded symbols, the number of zeros in each symbol is
a. odd
b. even
c. a and b both
d. unknown
Question 9:
Data communications monitors available on the software marked include
a. ENVIRON/1
b. TOTAL
c. BPL
d. Telnet
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Question 10:
An example of an analog communication method is
a. laser beam
b. microwave
c. voice grade telephone line
d. all of the above
Answers
1. b
2. d
3. a
4. b
5. b
6. c
7. d
8. d
9. a
10. d
SET-5
Question:1
Number of bits per symbol used in Baudot code is
a. 7
b. 5
c. 8
d. 9
Question 2:
What is the main difference between DDCMP and SDLC?
a. DDCMP does not need special hardware to final the beginning of a message
b. DDCMP has a message header
c. SDLC has a IP address
d. SDLC does not use CRC
Question 3:
An example of digital, rather than analog, communication is
a. DDD
b. DDS
c. WATS
d. DDT
Question 4:
Terminals are required for
a. real-time, batch processing & time-sharing
b. real time, time-sharing & distributed message processing
c. real time, distributed processing & manager inquiry
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d. real-time, time sharing & message switching
Question 5:
The receive equilizer reduces delay distortions using a
a. tapped delay lines
b. gearshift
c. descrambler
d. difference engine
Question 6:
Ina synchronous modem, the receive equilizer is known as
a. adaptive equilizer
b. impariment equilizer
c. statistical equilizer
d. compromise equilizer
Question 7:
The channel in the data communication model can be
a. postal mail services
b. telephone lines
c. radio lines
d. any of the above
Question 8:
A data terminal serves as an
a. Effector
b. sensor
c. both a and b
d. neither a nor b
Question 9:
Which of the following transmission systems provide the highest data rate to in individual device?
a. computer bus
b. telephone lines
c. voice and mode
d. lease lines
Question 10:
A protocol is a set of rules governing a time sequence of events that must take place
a. between peers
b. between an interface
c. between modems
d. across an interface
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Answers
1. b
2. a
3. b
4. d
5. a
6. a
7. d
8. c
9. a
10. a
Microsoft
IBM
Samsung
Applecorrect
Carlos Glidden
Christopher Latham Sholescorrect
Henry Mill
Alexander Graham Bell
Animation/movie filecorrect
Notepad file
MS Office document
Image file
4. Computer Hard Disk was first introduced by which one of these companies?
Dell
IBMcorrect
Microsoft
HP
HTML
HTTP
HPML
FTP
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6. The first internet search engine was:
Yahoo
Altavista
Google
Archiecorrect
Open Software
Optical Sensor
Order of Significance
Operating System
iOS
UNIX
Linux
Windows
COBOL
Sybase
MySQL
Oracle
10. Which one of these is generally accepted as the first computer worm?
PCV
Creepercorrect
Rabbit
Destruct
Word
Image
Audio
Video
Record
File
Document
Byte
General Knowledge
14. Who is known as the father of internet?
Alan Perlis
Tom Truscott
Vint Cerfcorrect
Marc Andreessen
Rob Pike
Ken Thompson
Linus Torvalds
Dennis Ritchi