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.
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.
Subnet the class C network address 198.67.25.0 into eight subnets. Why are the ‘all ones’ and ‘all zeroes’ subnets not used ?
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.
What are the various classes of IP addressing? Calculate the maximum number of class A, B and C network Ids.
Why is a data link layer switch preferred over a hub ?
Which device is needed to connect two LANs with different network Ids ?
When is a translating bridge used ?
Can a switch be used to connect two LANs with different network IDs ?
Write two ways in which computer applications differ from network applications ?
What is count to infinity problem ?
What was the reason for selecting a speed of 155.52 Mbps in the original ATM standard ?
Contrast link state and distance vector routing protocols, giving an example of each.
What is ISO-OSI reference model ? Compare it with TCP/IP reference model.
Why TCP/IP reference model is more popular than OSI model ?
