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TWO DIFFERENT KINDS OF TOPOLOGIES:
LOGICAL TOPOLOGY:
It is described by the specific network technology.
PHYSICL TOPOLOGY:
It relays on the wiring scheme.
NETWORK INTERFACE CARD AND WIRING SCHEMES:
Figure
To allow modifying the wiring without modifying the interface hardware, NICs support multiple wiring methods. it is given in the figure below.
When an error is discovered the receiver is able to ask the sender to retransmit the entire data unit Error Correction-Forward Error Correction A receiver is able to u
Explain the cost of a path between two nodes Given a network of nodes linked by bidirectional links, where every link has a cost associated with it in each direction, explain t
Question: (a) Describe briefly the difference between flow control and congestion control in relation to a connection-oriented protocol such as TCP. (b) What is the initia
Question: a) In a wireless network where WEP is enforced as security mechanism, what procedure would the network manager adopt for changing WEP default keys. b) Using Pla
distortion
definition
Explain BGP path attributes
Question : a) Describe the following core components of a cellular based network: i) Cell ii) MSC iii) HLR & VLR iv) PSTN b) Explain why frequency reuse is consi
Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.
What are the functions of the typical server program? It waits for client-initiated requests. Executes many requests at the same time. Takes care of VIP clients first. Initiate
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