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Computer Networks - Data Communication & Network Security

21:

The station-to-hub distance in which of the following is 2000 meters ?

A.	100 Base-TX
B.	100 Base-FX
C.	100 Base - T4
D.	100 Base - T1
	Answer Report Discuss
	Option: B Explanation : The distance between station-to-hub in 100 Base - TX is 100 meters. But in 100-Base-FX design. The distance between station-to-hub is 2000 meters. Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

22:

Ether LAN uses

A.	polar encoding
B.	diferential manchester encoding
C.	manchester encoding
D.	NRZ
	Answer Report Discuss
	Option: C Explanation : . Base band Ethernet LAN uses Manchester encoding Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

23:

Which of the given below houses the switches in Token Ring ?

A.	NIC
B.	MAU
C.	Nine-pin connector
D.	Transceiver
	Answer Report Discuss
	Option: B Explanation : MAU (Multistation Access Unit) : Individual automatic switches are combined into a hub called a multistation access unit (MAU) and MAU can support up to eight stations. Token ring uses the MAU. Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

24:

Which of the following uses an 8B/6T encoding scheme?

A.	100 Base-TX
B.	100 Base-FX
C.	100 Base-T4
D.	100 Base-T1
	Answer Report Discuss
	Option: C Explanation : 100 base-T4 requires four pairs of unshielded twisted pair cable to reduce baud rate of transmission (number of signal changes) 8B/6T (eight binary / six ternary) is used in which each block of eight bits is transformed into six bauds of three voltages levels. Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

25:

IBM's Token-Ring network uses

A.	adaptive routing
B.	source routing
C.	alternative routing
D.	spanned tree routing
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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