Compare the suitability and properties of isdn and adsl, Computer Network Security

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Question:

An aircraft manufacturing company is considering linking the network of one of its offices to the network of its Headquarter using either xDSL or ISDN.

i. Compare the suitability and properties of ISDN and ADSL for this link. Will they be used for communicating multimedia data? Give reasons.

ii. Why is it required for routers to exchange their routing information?

iii. Critically explain the benefits of using virtual LANs.

iv. What is ARP (Address Resolution Protocol)?

v. Network Address Translation (NAT) is also IP Masquerading,

(a) Describe carefully how IP masquerading works.

(b) Give benefits of using such method.

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