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Data Link Protocol - Multiple Choice Questions and Answers | Page-5

21 Which of the following device is used with an X.25 network to provide service to asynchronous terminals
A Gateway
B Bridges
C Repeater
D Packet assembler/disassembler

Answer: Option [D]
22 Which of the following summation operation is performed on the bits to check an error-detecting code ?
A Attenuation
B Codec
C Checksum
D Coder-decoder

Answer: Option [C]


23 Which of the following allows devices on one network to communicate with devices on another network ?
A Modem
B Gateway
C T-switch
D Multiplexer

Answer: Option [B]
24 Firewall _____
A Does not allow any connections to the server
B Allows people on the internet to see just one IP address
C Restricts unauthorized users from accessing sensitive data
D Manages password functions.

Answer: Option [C]
25 The maximum data rate that a medium of 10KHz and signal to noise ratio of 30dB is roughly ____
A 10K bps
B 30K bps
C 100K bps
D 300K bps

Answer: Option [D]

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