Chapter-03(Data Communication)
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Q-1: Chose
the correct option.
1x14=14
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1
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Unicode is a
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16 bit code
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32 bit code
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64 bit code
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128 bit code
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2
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Television
and radio broadcast are example of:
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Full duplex
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Half duplex
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Simplex
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Asynchronous
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3
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How many
characteres can unicode represents
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150000
Characters
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10000
Characters
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65536 Characters
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None
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4
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Which
transmission allows data to travel in both direction but only one direction
at a time:
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Simplex
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Half duplex
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Full duplex
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Reverse
duplex
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5
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Full
communication is made possible by devices called:
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Full duplex
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Multiplexer
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Hulf duplex
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None
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6
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Which of the
following devices uses parallel transmission:
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Printer
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Keyboard
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Mouse
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None
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7
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Analog signal
measure in :
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Digits
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Hertz
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Volt
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Wats
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8
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The
communication channel can be devided into :
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2 types
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4 types
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7 types
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8 types
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9
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The dia meter
of Fiber Optical cable is:
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62.5 cm
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62.5 micrones
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62.5 m
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62.5 mm
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10
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Which of the
following can severally effect the quality of satellite transmission:
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Moon
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Mountains
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Light rays
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Bad weather
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11
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BCD code is
_______ ;
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4
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8
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16
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32
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12
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BCD stands
for
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Byte coded
decimal
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Base coded
decimal
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Binary coded decimal
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Bidirectional
coded decimal
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13
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Which of the
following is not common communication code:
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Unicode
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Bilateral code
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EBDIC
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ASCII
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14
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Which of the
following feature is provided with a modem:
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Speeds
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Self testing
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Transmission
rate
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All of these
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Q-2: Write short answers any TEN, each question
carry 2 marks.
- i. What are data communication?
- ii. List out different elements of data communication?
- iii. Define the term encoder decoder?
- iv. What are two characteristics of analog signal?
- v. How is data represented in computer?
- vi. Define transmission modes?
- vii. What is difference between simplex and half duplex mode?
- viii. What is serial data transmission?
- ix. Describe Asynchronous data transmission?
- x. What is coaxial cable?
- xi. Write do you know about microwave transmission?
- xii. What is communication satellite?
- xiii. What do you know about external modem?
- xiv. What is internal modem?
Q-3: Write detail answers of the following
questions.
1.
What are data transmission modes? Explain.
2.
Discuss the different type of data transmission?
3.
What is data communication? What are the basic
components of communication network?
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