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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. TCP connection set-up ii. Cumulative Acknowledgement (Given that Seq = 152, Data=8 bytes and 16 bytes) iii. Termination of a connection
(c) Describe the mechanism that is used to perform flow control in TCP.
(d) State the 3 major entities that consists the Electronic Mail system.
(e) For the network below (link costs shown), use the Link State algorithm (Dijkstra) to calculate the least cost route from C to all other nodes.
What is the implication of increasing and decreasing subnet Bits?
Carrier Sense Multiple Access/Collision Avoidance a) Necessary since wireless LANs cannot implement CSMA/CD b) Collision detection requires increased bandwidth requirements
Explain Application Gateway?
Q. Use of Infrared? - Frequencies among 300 GHz and 400 THz - Short-range communication - High frequencies can't penetrate walls - Necessitate line-of-sight propagati
Connect a Router and Computer with a Console Cable Step 1 : Set up a basic physical connection. Connect the console (rollover) cable to the console port on the router. Link
The transport Layer Communication between computers is handled by the transport layer which is comprised of transmission control protocol (TCP) and the users datagram pro
What are General Middleware? It contains the communication stacks, authentication services, distributed directories, network time, RPC, Queuing services with the network OS ext
Fat tree It is a modified version of the tree network. In this group the bandwidth of edge (or the connecting wire among nodes) increases towards the root. It is a more practic
what is a WAN
Question 1 Differentiate LAN and WAN Question 2 Explain the TCP/IP Reference Model with diagram Question 3 Describe Circuit switching and message switching Question
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