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Q. Illustrate the Model for Network Security?
- A message is transferred from one party (Principal) to another.
- A logical information channel is founded between the two Principals by the cooperative use of some protocol example- TCP/IP.
- Goal is to offer the secure transmission of information from Opponents.
- A trusted third-party perhaps needed for secure transmissions.
What are the main categories based on which applications of computer network can be categorized? The major areas under which the applications for computer network can be divide
Explain what is digital certificate?
Q. Describe Flow and Error Control Mechanisms? Flow and Error Control Mechanisms - Stop and Wait ARQ - Go-Back ARQ - Selective Repeat ARQ
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?
Session layer examples are Netbios Names, SQL, NFS, X Windows, and RPC.
Dissimilar kinds of firewalls?
MPI_Wtime ( ) returns elapsed wall-clock time in seconds as some arbitrary point in past. Elapsed time for program segment is specified by the difference between MPI_Wtime values a
What is the difference between a straight-through and crossover cable? A straight-through cable is used to connect computers to a hub, switch, or router. A crossover cable is u
What Automatic Repeat Request (ARQ)? Error control is both error detection and error correction. It allows the receiver to inform the sender of any frames lost or damaged in tr
Define Co-axial cable. A solid central conductor surrounded by insulating material and then by a cylindrical shield woven from fine wires is called as co-axial cable. The shie
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