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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.
Question 1: (a) Explain what is meant by circuit switching? Give its main shortcoming and explain its relevance in telephone systems. (b) Outline the differences betwee
After going through this part, you should be capable to: Describe the concepts of message passing programming; List out the various communication modes for communication
What are the value added services Many organisations are demanding higher services (also called value added services) such as faxing, minimal cost call routing, connectivity to
Name the two commands that save the running-config to a TFTP server Ans) Two commands are:- a) copy running tftp b) write network
Can you explain the different layers in OSI model?
No Retransmission This protocols will not through the correctly received packets but buffers than and send acknowledgment for those packets. Thus retransmission of th
What do you meant by "triple X" in Networks? The function of PAD (Packet Assembler Disassembler) is defined in a document known as X.3. The standard protocol has been explaine
What is packet filter? Packet filter is a standard router up to with some extra functionality. The extra functionality permits every incoming or outgoing packet to be inspected
Features 1. Simple to install; 2. Simple to configure; 3. Multiple applications from one user can implement; 4. Multiple users can each use PVM concurrently; 5. C, C++, and
Ethernet Addressing Every station on the network must have a unique physical address Offered by a six-byte physical address encoded on the network interface card (NIC)
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