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Question 1:
Describe the following terms in your own words: a. Internet b. WWW c. Intranet d. Extranet e. VPN
Question 2:
When the hotel completes a contract, the customer is asked to fill in a data capture form that asks about their satisfaction with aspects of the job. The intention is that the data on the forms should be input using OMR techniques.
i. Describe term OMR.
The customer data contains some personal information.
ii. Describe why legislation exists to protect this kind of data.
iii. Explain measures that are likely to be included in this legislation.
Question 3:
a. Describe the difference between a wide area network (WAN) and a local area network (LAN).
b. (i) State three pieces of hardware that are needed to create a LAN from a set of stand-alone computers.
(ii) Describe why the communication over a WAN differs from that across a LAN and state how the hardware necessary for communication would differ from that used in part (i).
c. By drawing a diagram, or otherwise, explain a ring network and state an advantage that a ring network has over a bus network.
Q. Microwave Applications? - Unicasting - one-to-one communication among sender and receiver - Cellular phones - Satellite networks - Wireless LANs
Transmission Control Protocol - TCP is a connection oriented transport layer protocol with built unreliability. It considers a large block of data and breaks it down into segments
Compute the shortest path from t to all network nodes.
Disadvantages of IP sec Tunnelling mode IP sec tunnelling mode has the following disadvantage a.Encryption of small packets generates a lot networks over head thu
1. A computer system has a two-level memory cache hierarchy. The L1 cache has a zero hit penalty, a miss penalty of 5 ns and a hit rate of 95 percent. The L2 cache has a miss pena
Firewall is a device or a component that restricts access between a protected or an internal network from an external or untrustworthy network .A firewall basically limits unautho
Many instance of IGRP run on one physical router
A multiple activity chart records the related sequence of activities of more than one subject, men and / or machine on a common time scale showing the relationship between
What is the difference among flow control and error control? Ans) Flow control: adjust and confirm data flow rate for successful transmission. Error Control: a method to
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
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