If an IP network uses a subnet mask of 255.255 .240 .0 , the maximum number of IP addresses that can be assigned to network interfaces is $\_\_\_\_$ . (answer in integer)

A machine receives an IPv4 datagram. The protocol field of the IPv4 header has the protocol number of a protocol X .

Which ONE of the following is NOT a possible candidate for X ?

Consider a network that uses Ethernet and IPv4. Assume that IPv4 headers do not use any options field. Each Ethernet frame can carry a maximum of 1500 bytes in its data field. A UDP segment is transmitted. The payload (data) in the UDP segment is 7488 bytes. Which ONE of the following choices has the CORRECT total number of fragments transmitted and the size of the last fragment including IPv4 header?

Node X has a TCP connection open to node Y. The packets from X to Y go through an intermediate IP router R. Ethernet switch S is the first switch on the network path between X and R. Consider a packet sent from X to Y over this connection.

Which of the following statements is/are TRUE about the destination IP and MAC addresses on this packet at the time it leaves X?