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Data Transmission Network - Multiple Choice Questions and Answers | Page-8

Questions
36 Usually information security in a network is achieved by
A Layering
B Grade of service
C Addressing
D Cryptography

Answer: Option [D]
37 Signal becomes weak with increase in distance travelled because of
A Modulation
B Attenuation
C Switching
D None of these

Answer: Option [B]
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38 Channel coding is used to
A Secure the channel
B Minimize interference in the channel
C Protect the information against channel noise
D Protect against unnecessary tapping of signal from the channel.

Answer: Option [D]
39 European-based standard for all fiber system is
A SDH
B ADH
C DTH
D FTH

Answer: Option [A]
40 Which of the following are the smallest and largest possible values for an IP octet ?
A 0 and 512
B 255 and 512
C 0 and 256
D 0 and 255

Answer: Option [D]
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