problem 1) Why do we require a DNS system when we can directly use the IP address?

problem 2) prepare down the ex of point to point protocol.

problem 3) What is the objectives of 127.0.0.0 IP address?

problem 4) describe in detail when ARP packet is used?

problem 5) What do you mean by ping? Is it the ICMP Protocol?

problem 6) What do you mean by socket address?

problem 7) Why in IP datagram we have checksum only for header not for whole data?

problem 8) What is the port no. for SMTP protocol?

problem 9) prepare down the full form of IANA.

problem 10) Which transport layer protocol is used when we want connectionless service?

problem 11) Why ARP request contains the address of requester also? Describe in detail.

problem 12) Does ICMP communicate only with original source or within intermediate router also? Describe in detail.