1. A host wants to join in a network and he needs an IP address. Write a procedure to obtain this IP address. 2. Justify

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1. A host wants to join in a network and he needs an IP address.
Write a procedure to obtain this IP address.
2. Justify whether digital signature follows symmetric key
cryptography or asymmetric key cryptography.
3. Why network address translation is necessary for data
transmission?
4.Difference between Unicast, Broadcast and Multicast in
Computer Network.
5.describe all three Switching fabrics( memory, bus, crossbar)
and which one is more preferable.