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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 network
- Capacity that is the number of packets a network can handle
Why congestion occurs?
- Because routers and switches have queues that hold the packets before and after processing
Congestion control: keep the load below capacity
The packet is place at the end of the input queue
The processing module moves the packet from the queue and forwards the packet
The packet is put in an appropriate output queue
Q. Explain the process of piggybacking? When a data frame arrives in its place of immediately sending a separate control frame and the receiver restrains itself and waits until
a) What does the "CD" mean in the CSMA/CD? How is it implemented in the Ethernet? b) Consider an Ethernet hub with 8 ports and an Ethernet switch with 8 ports. In both cases
contribution to afican American history
NETWORK MANAGEMENT & SECURITY 1. Describe a basic communication model. 2. State the following terms: a. Configuration Management b. Fault Management c. Security Management
Describe what is meant by Asymmetric Multiprocessing (AMP)? Ans) It imposses hierarchy and a division of labour between processors. Only one designated processor, the master, co
Ethernet Frame Fields Preamble - seven bytes of alternating 0s also 1s to notify receiver of incoming frame and to provide synchronization SFD (Start frame delimiter)
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Describe the method of static and dynamic routing
Any protocol used by an internetwork to exchange routing data within an autonomous system. E.g. RIP, IGRP and OSPF.
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