Computer Networks [GATE (Graduate Aptitude Test in Engineering) Computer Science & IT (CS)]: Questions 28 - 31 of 347

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Question 28

Question MCQ▾

The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

Choices

Choice (4)Response

a.

0.333

b.

0.999

c.

0.009

d.

All of the above

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Question 29

Question MCQ▾

Which layer functions as liaison between user support layers and network support layers?

Choices

Choice (4)Response

a.

physical layer

b.

transport layer

c.

data link layer

d.

network layer

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Question 30

Question MCQ▾

Which command will configure a switch port to use the IEEE standard method of inserting VLAN membership information into Ethernet frames?

Choices

Choice (4)Response

a.

Switch (config) # switch port trunk encapsulation isl

b.

Switch (config) # switch port trunk encapsulation dot 1q

c.

Switch (config-if) # switch port trunk encapsulation dot 1q

d.

Switch (config) # switch port trunk encapsulation ietf

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Question 31

Question MCQ▾

Networking such as LAN, MAN started from:

Choices

Choice (4)Response

a.

fourth generation

b.

third genration

c.

first genration

d.

second genration

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