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Computer Networks
1. Differentiate WAN and LAN.
2. Describe the TCP/IP Reference Model with diagram.
3. Explain Circuit switching and message switching.
4. List the functions of (i) Routers (iii) Bridges.
5. State the terms Error Detection and Correction with respect to Data Transmission. Also describe the following concepts with respect to Error Detection and Correction:
a. Parity Bits b. Cyclic Redundancy Check
6. Write short notes on
(i) Non-Persistent CSMA (ii) 1-Persistent CSMA (iii) P - Persistent CSMA.
Question: (a) With the help of a diagram, describe a typical DNS system. (b) Using signal sequence or state transition diagrams, illustrate the following scenarios: i.
Describe packet filtering firewall?
What is Multi-mode fiber Multi-mode fiber uses LEDs like the light-generating devices while single-mode fiber generally uses lasers. FDDI specifies the utilization of dual r
Path Layer The path layer maps services such as DS3, FDDI, and ATM into the SONET payload formal. This layer provides end to end communications signals labelling path m
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
Q. Explain the process of piggybacking? When a data frame arrives in its place of immediately sending a separate control frame and the receiver restrains itself and waits until
ARP sent the request in broadcast, response is unicast When a source sends ARP request the switch broadcast the ARP req. if it doesn't have the destination mac address in its ma
Drawback of Repeaters. Repeater has no filtering capability as it forwards every frame. Repeater shell be placed at accurate distance before actual signal becomes
how to switching and routing
Next hop to receiver does not relay on source of packet. This phenomenon is known 'Source Independence'. It has various benefits. It gives efficient and fast routing. Packet switch
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