please answer the qastions

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Computer Science

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the question in the doc below about network

answer in the same page

the question in the doc below about network

answer in the same page

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Q1 For the following four scenarios, explain your answer with valid reason. (i) A cable which was not properly attached with the hub is accidentally pulled out from hub in star topology. Will this network work? (ii) Due to fluctuation in light, a centralized hub is burnt in star topology. Although all connected devices and cables are unaffected, will these devices be able to access the network? (iii) A loose terminator gets separated from cable making it open at one end in Bus topology. Will this network work as expected? (iv) A cable which connects two devices in Ring topology broke. Will remaining devices work normally? Q2 How many of cable links required for the following given network topology? (i) For 9 devices with mesh topology (ii) For 5 devices with bus topology (iii) For 7 devices with ring topology (iv) For 8 devices with star topology Q3 What are the two principles of Protocol Layering? Write and explain in your own words. ? Q4 What is the difference between a port address, a logical address, and a physical address? Write and explain in your on words. Q5 Explain all types of transmission impairment in data communication. Do not copy from book, slides and other sources. Answer must be in your own words only.
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Explanation & Answer

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Q1
(i)

(ii)

(iii)

(iv)

Ans: Yes, the network will work without any problem because there is not
physical connection between the devices or computers so if a cable was not
properly attached with the hub, only the computer(s) attached to that cable
will not work while the rest of devices will maintain the connection through
the network. If there is a hub fail, the entire network would go down.
Ans: No, none of them will access to the network even when the devices are
ok because it is necessary to have a central network device such as a hub
working correctly for controlling the entire network and transmit data.
Ans: No, if a loose terminator is separated, the signal will swing forward and
backward through the network and communication will stop so it is necessary
to have all the ends terminated.
Ans: ...


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