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What is Proxy Sever and Firewall
Proxy Sever
Also known as a proxy or application level gateway. It is an application that breaks the connection among sender and receiver. Thus, it helps us to stop hacker from getting Internet address and detail of a private network.
Firewall
Firewall is a method for keeping a network secure. It is mainly used in giving user's access to the Internet in a secure fashion as well as to separate a company's public web server from its internal network.
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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Physical Media In order to define what is meant by a physical medium let us reflect on the brief life of a bit. Consider a bit travelling from one end system through a serie
Q. Describe Flow and Error Control Mechanisms? Flow and Error Control Mechanisms - Stop and Wait ARQ - Go-Back ARQ - Selective Repeat ARQ
Vector-Distance algorithm illustrated in more detail below: Packet switches wait for next update message and they goes by entries in packet. If entry has least path to destinat
FDDI Media Class B or SAS (single-attachment stations) attach to one ring Class A or DAS (dual attachment stations) attach to both rings. SASs is attached to the primary rin
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