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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
What is the difference between TFTP and FTP application layer protocols? Ans) TFTP - Trivial File Transfer Protocol A stripped down version of FTP, easy to use and fast. TFTP
Convergence time is slower for Distant Vector routing and is faster for Link State routing.
List the layers of OSI There are seven layers in OSI model a. Physical Layer b. Data Link Layer c. Network Layer d. Transport Layer e. Session Layer f. Presen
TCP (Transmission Control Protocol) and UDP are used by TCP/IP. SPX (Sequenced Packet Exchange) is used with IPX. NBP (Name Binding Protocol) is used with Appletalk.
Ping and Traceroute are used by ICMP for Testing. Destination Unreachable messages are obtained by a router when it does not have a route to the network.
Create a custom chi-square function in matlab, MATLAB in Statistics
Sender requests connection from network. Other receiver agrees to connection. Computers interchange data through connection. One-endpoint requests network to split connection when
a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible? b. Suppose
In point-to-point message passing, single process sends/receives message to/from another process. There are four communication modes for sending a message: i) Buffered mode
TOP Level Domain (TLD) Servers These servers are responsible for top level domains such as com org net edu, and going and all the country top level domains such a
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