Host A sends a UDP datagram containing 8880 bytes of user data to host B over an Ethernet LAN. Ethernet frames may carry data up to 1500 bytes (i.e. MTU = 1500 bytes). Size of UDP header is 8 bytes and size of IP header is 20 bytes. There is no option field in IP header. How may total number of IP fragments will be transmitted and what will be the contents of offset field in the last fragment?

Using the network below, show the complete routing tables for: a) R1 b) R3 You must include the following 4 fields in each of your routing tables: Mask, Destination, Next Hop and Interface. Entries in your routing table should be sorted in the following order {Direct, Host-Specific, Network-Specific, Default). Internet ao OR1 130.60.0.0 a1 74.100.11.1 c1 co 130.60.95.6 74.0.0.0 74.102.94.33 R3 bo 74.101.9.3 130.60.210.19 130.60.210.14 R2 b1 221.53.49.39 b2 221.53.49.0 221.53.49.128 Site: 221.53.49.0

Draw a sequence diagram for the following scenario. In a network, two nodes communicate with each other. These are the sequence. 1) Node J sends ping message to Node L 2) Node L sends ICMP echo reply to node L. Now Node A is having the MAC address of Node L. 3) Node J starts TCP handshake with Node L by sending SYN message. 4) Node L sends (SYN+ACK) back to node J. 5) Node J sends the ACK to Node L.

An IP address can be written as a 32-bit number. For a class B network, the two most significant bits are set to 10. The 16 most significant bits are used as a network ID, and the 16 least significant bits are used as a host ID. However, the host ID cannot be all O's or all 1's. How many hosts (i.e., host IDs) can there be on a class B network? Type your answer.