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Un-Answered Questions { Software }

Differentiate between Baseband co-axial cable and broad band coaxial cable

1555


Differentiate between Optical fibre and twisted pair

1632


Differentiate between SMTP and SNMP

3903


What are the basic functions of the data link layer?

1794


Write down the basic features of HDLC protocol? Could HDLC be used as a data link protocol for a LAN? Justify your answer.

3526


The physical layer service is a non-confirmed service. Assume that some bits of data are lost during transmission over physical media, which layer will detect the loss and take some remedial measures. Explain any one method clearly depicting how this operation is performed.

2744


What are the advantages of cell switching that is used in ATM?

2507


Outline and discuss the main fields in Ethernet IEEE 802.3 frame. What are the main objectives of preamble ?

1940


What is the average number of transmission required to send a frame of length 1600 bytes correctly, if the bit error rate is 1 x 10-6.

1610


Explain what is meant by the term ‘integrated service digital network’. Give three reasons a company might choose an ISDN link in preference to a leased line.

1636


Subnet the class C network address 198.67.25.0 into eight subnets. Why are the ‘all ones’ and ‘all zeroes’ subnets not used ?

1908


What do you understand by the term ‘structured cabling’. State the main rules that should be used when installing a cable. 31. Show that maximum cabling area for LAN for horizontal cabling runs is approximately 200m.

1648


What are the various classes of IP addressing? Calculate the maximum number of class A, B and C network Ids.

1772


Why is a data link layer switch preferred over a hub ?

2106


Which device is needed to connect two LANs with different network Ids ?

1759