What are two most important fields in the header of IP datagram?
What are two most important fields in the header of IP datagram?
Homework Answers
The two most important fields in the header of IP datagram is of course the source address and the destination address. Apart from these two, other key fields are: TTL (Time to live), Protocol, Header checksum, Flags.
An IP datagram has arrived with the following information in the header(hex): 45000054 00030000 2006... A.)...
An IP datagram has arrived with the following information in the header(hex): 45000054 00030000 2006... A.) What is the header size? B.) Are there any options in the packet? C.)What is the size of the data? D.)Is the packet fragmented? E.)How many more routers can the packet travel to? F.)What is the protocol number of the payload being carried by the packet?
4. (20%) PC1 sends a 1,500 octet datagram (20-byte header and 1,480 bytes of data, IP...
4. (20%) PC1 sends a 1,500 octet datagram (20-byte header and 1,480 bytes of data, IP ID = 677 to PC2 through the routers R1 and R2. The corresponding MTUs are given in the following diagram. Please show the information about IP packet identification, total packet length, IP flag bit Mand fragment offset in the IP header of each fragmented IP packet. R1 R2 MTU=1500 bytes MTU=1500 bytes PC1 MTU=500 bytes PC2 Fragment #1 Fragment #2 Fragment #2 Fragment ID...
Examine the following: What header fields are used to identify a UDP socket? source IP address...
Examine the following:
What header fields are used to identify a UDP socket? source IP address destination port number source port number destination IP address
An IP datagram has arrived with the following information in the header (hexadecimal): 46 00 00...
An IP datagram has arrived with the following information in the header (hexadecimal): 46 00 00 70 00 05 01 00 18 06 00 00 7C 4E 03 02 B4 0E 0F 02 a. Are there any options? If so how many? b. Is the packet fragmented? c. What is the size of the data? d. Is a checksum used? e. How many routers can the packet travel to? f. What is the identification number of the packet?
Describe why UDP uses the pseudo-header to verify that the UDP datagram has reached the correct...
Describe why UDP uses the pseudo-header to verify that the UDP datagram has reached the correct destination, even though the IP layer has already used the destination IP address to ensure that the datagram is addressed to the receiving machine.
While sending an IP datagram from host A to host B and a return a datagram...
While sending an IP datagram from host A to host B and a return a datagram from host B to host A, where A and B are on different networks . While sending an IP datagram from host A to host B and a return a datagram from host B to host A, where A and B are on different networks . a) What will be the source and destination IP addresses on the datagram sent from host A? b)...
Problem 9:6 Points (why?) Most IP datagram reassembly algorithms have a timer to avoid having a l...
Problem 9:6 Points (why?) Most IP datagram reassembly algorithms have a timer to avoid having a lost fragment tie up reassembly buffers forever. Suppose that a datagram is fragmented into six fragments. The first and second fragments arrive, then the fifth and sixth ones arrive, but the third and fourth ones are delayed. Eventually, the timer goes off and the six fragments in the receiver's memory are discarded. A little later, the third and fourth fragments stumble in. What should...
1. A transport-layer packet is called a datagram, which encapsulates a header and an application-layer message....
1. A transport-layer packet is called a datagram, which encapsulates a header and an application-layer message. True or False? 2. If the range of IP addresses is 01010110 00000000 00000000 00000000 through 01010111 11111111 11111111 11111111, the longest prefix entry in the routing table would be 0101011. True or False?
What is the minimum size of an IPv4 datagram header in octets (not including body field)?...
What is the minimum size of an IPv4 datagram header in octets (not including body field)? (your answer should be an integer with no units, spaces, commas or even a decimal point)
5a. What are the advantages and disadvantages of Proxy ARP? b. What is the TTL field...
5a. What are the advantages and disadvantages of Proxy ARP? b. What is the TTL field of the IP datagram header and why is it important?
4. (20%) PC1 sends a 1,500 octet datagram (20-byte header and 1,480 bytes of data, IP ID = 677 to PC2 through the routers R1 and R2. The corresponding MTUs are given in the following diagram. Please show the information about IP packet identification, total packet length, IP flag bit Mand fragment offset in the IP header of each fragmented IP packet. R1 R2 MTU=1500 bytes MTU=1500 bytes PC1 MTU=500 bytes PC2 Fragment #1 Fragment #2 Fragment #2 Fragment ID...
Examine the following:
What header fields are used to identify a UDP socket? source IP address destination port number source port number destination IP address
Problem 9:6 Points (why?) Most IP datagram reassembly algorithms have a timer to avoid having a lost fragment tie up reassembly buffers forever. Suppose that a datagram is fragmented into six fragments. The first and second fragments arrive, then the fifth and sixth ones arrive, but the third and fourth ones are delayed. Eventually, the timer goes off and the six fragments in the receiver's memory are discarded. A little later, the third and fourth fragments stumble in. What should...
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