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Virtual Private Network (VPN) adds the features of both public and private networks. It is fixed to single organization and needs public network for connectivity.
These connections are sometimes known tunnels and connect sites. Every site sees tunnel as point-to-point link. There is no access for other clients of public networks.
GUARANTEEING ABSOLUTE PRIVACY:
In addition to restricting data packets, VPN machines use encryption to sure absolute privacy. Even if an outside does manage to retain a copy of the data packet the outside will be unable to interpret the message.
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Q. Illustrate User Agent Services? User Agent (UA) Services - Provide template for user to compose a message - Reads incoming messages - Allows a user to reply to m
The entire idea of ISDN is to digitize the telephone network to allow the transmission of video, audio and text over existing telephone lines. The reason of the ISDN is to provide
1. Suppose the datagram source allocates 12 bytes for this option. Then when the datagram leaves the source host, the RR option area will be like this: 7 12 4 0 0 0 0 0 0 0 0 0
What is Error Control ? Error control is both error detection and error correction. It allows the receiver to inform the sender of any frames lost or damaged in transmission an
Bridge A bridge operation sin both physical and data link layer of OSI model. At physical layer it works like repeater as it regenerates the signal and performs int
Wide Area Network WAN Wide Area Network ( WANs) connect larger geographic areas such as London the UK or the world. In this types of networks dedicated transoceanic cab
Q. Explain about Congestion control? Congestion control Open-loop congestion control - prevent congestion before it happens retransmission policy - Ret
Recognize the command that will show the RIP routes entering and leaving the router? Ans) Route# debug ip rip
Frequency Division Multiplexing Frequency division multiplexing (FDM) is an analogy technique that can be applied when the bandwidth of a link is greater than the combined b
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