1. Differentiate between
(a) Hub and switch (6) Intranet and Internet
(6) Router and Gateway (d) Analog and Digital Signals. 2) Write three dis advantages and advantages of Netwoking
37 Write four features of cloud Computing A write short notes on different types of cloud storage
device.
8
write the define
Define the following - (as web portal (6) website
(c) web page (2) MODEM.
Answers
Explanation:
1. Repeater – A repeater operates at the physical layer. Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted so as to extend the length to which the signal can be transmitted over the same network. An important point to be noted about repeaters is that they do not amplify the signal. When the signal becomes weak, they copy the signal bit by bit and regenerate it at the original strength. It is a 2 port device.
2. Hub – A hub is basically a repeater. A hub connects multiple wires coming from different branches, for example, the connector in star topology which connects different stations. Hubs cannot filter data, so data packets are sent to all connected devices. In other words, the collision domain of all hosts connected through Hub remains one. Also, they do not have the intelligence to find out the best path for data packets which leads to inefficiencies and wastage.
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