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Question :
(a) List down and explain the different signal propagation behaviours that radio waves exhibit.
(b) Explain the term Delay Spread with reference to signal propagation
(c) Infra Red and radio transmission are the two different basic transmission technologies that can be used to set up WLANs. Explain why radio transmission is preferred when setting up a Wireless LAN in an institution compared to infra red.
(d) IEEE 802.11 Infrastructured network has basic components such as Stations, Access Points and distributed System.
(i) Give a brief description of the functioning of an Infrastructured Network.
(ii) Show down the main functions of the Access points.
(e) Why do collisions occur in an infrastructure wireless network? Give a solution to remedy to this situation.
Describe in details about applications of Computer Networks ?
Compute the shortest path from t to all network nodes.
Q. What are the trends in Network Security ? Trends in Network Security Improved vigilance for virus infections Continual maturation of firewall technologies
A.) JPEG and PICT B.) MPEG and MIDI C.) ASCII and EBCDIC For example, the Presentation layer would be liable for changing from EDCDIC to ASCII. Data compression, decompres
What is silly window syndrome? It is a difficulty that can ruin TCP performance. This problem happens when data are passed to the sending TCP entity in large blocks, but an int
Why Routine security audits are essential It is essential that regular security audits are conducted to find out physically which computer is connected and permits access to
Can you describe the concept of OSI layer
Single Program Multiple Date A common style of writing data parallel programs for MIMD computers is SPMD (single program, multiple data): all the processors implement the same
Can you describe voluntary and compulsory tunnels?
What are some drawbacks of implementing a ring topology? In case one workstation on the network varies a malfunction, it can bring down the whole network. Another drawback is t
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