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Firewalls
Firewalls emerged as a new technology in 1990s but its idea was present near two decades back. Historical context of "Firewall" is quite literal. It was in use to describe a barrier that separates a portion of a building dealing with fire, like a stove or a kitchen, from the rest of the structure. Later firewall found its use in connection with steam engines. It was described as a wall which separates an engine fire from passenger cars. Firewall ideas were greatly matured when Jeff Mogul from Digital Equipment Corporation published his papers in 1988 . His work described various processes that could be used to make networks secure. It was Marcus Ranum of AT&T Bell Laboratories who proposed the design of firewall and its components. He also coined the term "Firewall" for this quickly maturing technology. His work got much attention in 1990 and firewalls gained commercial popularity
Facts about Fiber Optic Cables 1. Outer insulating jacket is made of Teflon or PVC. 2. Kevler fiber helps to strengthen the cable and prevent breakage. 3. A plas
Take the maximum packet lifetime, T. It's stated that T must be big enough to make sure the packet and its ACK have vanished. Why do we have to have the ACK?
The auxiliary port is used to link a modem to for dial backups.
It's a Hybrid device that joins the features of both bridges and routers.
Describe any good security technology A good security technology should be powerful enough to support the features that the administrators need, including rules validation to i
Encoding Process c= uG u: binary data sequence of length 4( input) G: Generator matrix which is 7*4 c: Codeword D
Q. What do you mean by Substitutional Ciphers? Substitutional Ciphers Monoalphabetic Substitution Polyalphabetic Substitution - Transpositional - character
Can you describe the concept of CDMA?
We know that all processors share a common memory in shared memory model. Every processor, however, can be assigned a different part of the program stored in the memory to implemen
In case of any new event switch do broadcast, after that always do Unicast.
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