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Question:
(a) Distinguish between Flow Control and Congestion Control.
(b) Explain clearly how a URL is resolved by a computer.
(c) List one application that uses TCP protocol and one application that uses UDP.
(d) Compare and contrast POP and IMAP.
(e) With the aid of a diagram, describe the role of the User Agent (UA), the Mail Transfer Agent (MTA) and the SMTP server in the Simple Mail Transfer Protocol (SMTP).
(f) How does ATM provide Quality of Service?
5. Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frame are 25 bytes long. Calculate the efficiency of Stop-and-Wait ARQ in a system t
Mean node-node path The mean node-node path is two times the mean node-root path. Number the levels of the tree with the root as 1 and the deepest level as N. The path from t
Question: a) What is a Linux shell? b) Prepare the commands for the following tasks: i) Change the working directory ii) Show the working directory iii) Execute a pro
ONE TO MANY
What are the threats include in computer software The second component vulnerable to threats to the system is software. Threats to software may include, but are not limited to
What is point to point link? It refers to a direct connection among two computers on a network. A point to point connection does not require any other network devices other tha
Output Port The function of the port is take the packets that have been stored in the out put port memory and transmits them over the out going link. The queuing and bu
What do you mean by OSI? The Open System Interconnection (OSI) reference model explains how information from a software application in one computer moves by a network medium to
Q. Explain Types of Redundancy Checks? Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redund
What are the disadvantages of bus topology? The disadvantages of bus topology are: a. The bus networks are dissimilar to reconfigure, especially when the acceptable number o
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