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QUESTION
a) List the seven layers of the ISO-OSI model and briefly describe the role of each layer
b) Describe the functions of the following intermediate systems-
c) Assume six devices are arranged in a mesh topology
How many cables are needed?
How many ports are needed for each device?
Q. Why congestion occurs? Congestion Emerge if the load on the network is greater than the capacity of the network - Load that is the number of packets sent to the net
State the difference between Byte streams and message Byte streams and message are different. In a message stream, network keeps track of the message boundaries. In a byte stre
what is compurter network and types, topology, communication media
What is Project 802? It is a project begins by IEEE to set standards that enable intercommunication among equipment from a variety of manufacturers. It is a way for specifying
The Received Message If we didn't mention another class of header lines that are inserted by the SMTP receiving server. The receiving server upon receiving a message wit
FDDI, Token Ring and Ethernet are all physical layer framing standards.
Fragmentation - Wireless environment is very noisy - Corrupt frames must be retransmitted - Large frames must be divided into smaller ones to increase efficiency
What is uniform delivery time A uniform delivery time is required for voice, so amount of jitter in net- work is significant. This could be expressed as standard deviation of d
Explain use of RTP and RTCP Protocol?
Write the characteristic of Store and Forward switches? A) Store and Forward switch will not forward fragments. B) The longer the frame, the longer the delay (latenc
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