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]