3. (12 pts.) An IPv4 packet has the following header: Ox4500 04ce123a 4000 0401 554b 4350 1b20 7801 530f. (a) Write the source address in dot decimal format. (b) Write the destination address in dot decimal format. (c) What is the time to live value in decimal format? (d) What is the packet length in bytes? (decimal format) (e) What is the value of the header checksum? Is it valid? Explain how did you check. What will happen to this packet when it arrives to the next hop in the network