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Question:
a. State briefly three reasons why computer networks are used?
b. Differentiate between simplex, half-duplex and full-duplex mode of transmission.
c. State any three disadvantages of synchronous mode of transmission.
d. Fiber optic is the new form of bounded media. In this context:
a. Explain briefly any four characteristics of a fiber optic cable.
b. State three disadvantages it has over copper wire.
e. Demonstrate your understanding of the following:
a. LAN
b. WAN
What is problem formulation in network security
Packet Filtering Firewall Packet filtering is a network security mechanism that works by controlling what data can flow in and out of the network. The basic device that interco
Question An organization is planning to connect its networks to the Internet. The network is located within a four story building. A web server supporting online sales is also
why is it that sometime we put password in our account to login or signup and it would not work?
Question: (i) ‘Implementation' is a critical stage of the Systems Development Life Cycle. Show the four approaches which are commonly used to implement information systems in
Routers They transfer packets among multiple interconnected network machines (i.e. LANs of different kind). They perform in the data link, physical and network layers. They ha
QUESTION (a) Describe the two possible configurations for 3DES (b) What is the main disadvantage of 3DES? (c) Why are most modern symmetric algorithm block ciphers? (d
POINT-TO-POINT: In Point-to-Point topology there are two kind of topologies. 1) STAR topology 2) TREE topology In star topology each and every computer is connect
types of firewall and backup
Hypothetical reliable data transfer protocol: A jumping window based Go-back-N ARQ protocol for file transfer using UDP as the transport protocol: In this protocol, a window o
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