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Q. Explain about Error Detection?
Data can be corrupted during transmission because of accidents, Storms, sudden increase in electricity and voltage / decrease in signal power over distance
For reliable communication errors should be detected and corrected
do you do paraphrase
Connectionless Multiplexing and De multiplexing Java program running in a host can create a UDP socket with the line Datagram's socket my socket = new datagram's socket
What is Stop-and-Wait Automatic Repeat Request? Error correction in Stop-and-Wait ARQ is implemented by keeping a copy of the sent frame and retransmitting of the frame when th
What is mesh network? A network in which there are many network links among computers to provide multiple paths for data to travel.
The purpose of internetworking is universal service across heterogeneous networks. To give this service all computers, and routers have to agree to forward information from a sourc
What are proxy servers and how do they protect computer networks? Proxy servers primarily stop external users who identifying the IP addresses of an internal network. Without i
What are firewalls? Firewalls serve to protect an internal network from external attacks. These external threats can be hackers who need to steal data or computer viruses that
Describe in detail with example how data fragmentation works?
Wait protocol The wait protocol is used for resolving the conflicts, which arise due to number of multiprocessors demanding the same resource. There are two types of wait prot
Application Layer The application layer provides an interface between application entities and the users computer. This layer offers services to a variety of aspects of d
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