Which of the following is a File command in the File System context of the Command Line Interface (CLI)?

1. A. time-display
2. B. help
3. C. type
4. D. terminal

Correct Answer: C

In the diagram, R3 receives an LSA with the sequence number 111 from R7 and then receives another copy of the LSA with a sequence number 112 from R1. What does R3 do with the LSA from R1?

1. A. R3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1.
2. B. R3 installs the LSA received from R1 in its link state database and floods a copy to its neighbor
3. C. R3 discards the LSA received from R1 and sends an ACK to R1.
4. D. R3 installs the LSA received from R1 in its link state database, sends an ACK to R1 andfloods a copy to its neighbor

Correct Answer: D

What characteristic of IP addressing creates a hierarchical network?

1. A. All hosts on all networks must have unique host number
2. B. IP addresses identify a host and the network on which it reside
3. C. Clients are assigned 32-bit addresses and servers 64-bit addresse
4. D. Router, switch and host addresses are drawn from unique address classe

Correct Answer: B

What protocol is used by ping to verify IP network reachability?

1. A. DCHP
2. B. ICMP
3. C. ARP
4. D. NAT

Correct Answer: B

TCP is sending data in 5 segments with SEQ numbers 27000, 27500.28000, 28500, and 29000 respectively. During transmission, the segment with SEQ=28500 is dropped in the network. How does TCP handle this situation?

1. A. The receiving end station sends an ACK flag with SEQ=28000 to indicate it has received a segment out of orde
2. B. The receiving station sends a NACK frame with SEQ=28500 requesting that the frame be retransmitted
3. C. Once the reciever's window is ful
4. D. TCP assembles the payload and determines that SEQ=28500 is missin
5. E. At this point, the reciever sends the RST flag with SEQ=28500 to Request Single Transmission of the missing segmen
6. F. TCP will collect the segments and forward them to the application layer where the SEQ numbers will be processed and a retransmit request will occur for the entire packe

Correct Answer: C