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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
Tools for Digital Sound Sound is the oscillation of pressure that propagates in the form of a wave. Sound waves are transmitted through some medium (solid, liquid, or gas); th
A method used to standardize and categorize fault-tolerant disk systems. RAID levels give lot of mixes of performance, reliability, and cost. Some servers give three of the RAID le
Difference between Authentication and Deauthentication Authentication: Used to establish the self of stations to each other. Deauthentication: This service is appealed whene
network design for company
Q. Explain about Nonboundary-Level Masking? Nonboundary-Level Masking Bytes in the IP address that correspond to 255 in the mask will be repeated in the subnet addres
What is a jam signal A jam signal is broadcasts to network by the transmitting stations that detected the collision to ensure that all stations know of the collision. Every st
Transmission Control Protocol (TCP) TCP makes the Internet reliable. TCP solves several problems which can occur in a packet switching system. TCP provide the given facilities:
Routing Table A routing table has columns for at three types o information the network ID the cost and the ID of the next router. The network ID is the final desti
a) A host is sending a HTTP request to a HTTP server. In the table below, propose a correct set of source and destination port numbers for segments sent from host to server and fr
what is difference between Star and Mesh topology?
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