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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.
Internet Service Provider (ISP) This supper fast network spanning the world from one major metropolitan area to another is provided by a handful of national internet
The Physical layer deals with the definite physical medium and the method of transporting 1s and 0s.
What is a protocol? The term protocol refers to a set of rules and process that govern the transmission of messages over a physical networking medium. The most common network p
The disadvantages and advantages of Private and Public networks are shown in the table below:
Q Illustrate Return to Zero encoding? - In NRZ-I long strings of 0s may still be a problem - May comprise synchronization as part of the signal for both 1s and 0s - How?
Can you describe the concept of OSI layer
CYCLE OF BRIDGES: A bridges network can join several segments. One bridge is useded to connect every segment to the rest of the bridge network. This is given in the figure be
In IPSec what is SAD, SPD and SA's?
What are the Unix-based firewalls The Unix-based firewalls are considered most secured as compared to the Windows NT based ones. The firewalls bind the holes of the operating
What is a Counter A software code that indicates how many times a site has been visited. It gets automatically updated and is usually represented by a small rectangle with n
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