14. 16 points) The following network diagram shows the cost in minutes to travel between 10 towns. a) b) Use Dijkstra's algorithm to find the minimum time to travel from A to J. (5 pts) State the corresponding route F 13 14 14 6 12 E 18 G 13 a) b) 15. [1 point] In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.) a) Unlike IPv4 headers, IPv6 headers have a fixed length. b) IPv6 uses an extension header instead of the IPv4 Fragmentation field. c) IPv6 headers eliminate the IPv4 Checksum field. d) IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field e) IPv6 headers use a smaller Option field size than IPv4 headers. f IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field. 16. [I point] In the TCP segment header,... is a 32-bit number identifying the next data byte the sender expects from the receiver a) serial number b) current number c) sequence number d) acknowledgement number 17. [2 points] A computer on a 6-Mbps network is regulated by a token bucket. The token bucket is filled at a rate of I Mbps. It is initially filled to capacity with 8 megabits. How long can the computer transmit at the full 6 Mbps? b) 1.3 c) 1.2 d) 1.4 18. [I point] Using DNS, if a server has no clue about where to find the address for a hostname then a) b) c) d) server asks to the root server server asks to its adjacent server request is not processed none of the mentioned 19.I1 point] A packet which is sent by a node to source to inform it of congestion is called a) Congestion Packet b) Change Packet c) Choke Packet d) Control Packet