Which of the following applications would be likely to use UDP?

1. A. Real-time audio application, such as VoIP
2. B. Web browser
3. C. Email application
4. D. Telnet

Correct Answer: A

The sequence numbers are used by TCP to ensure that the data receive is provided to the application in the correct order.

1. A. TRUE
2. B. FALSE

Correct Answer: A

What is the sequence of messages sent by a host when it attempts to ping a destination for which it has no Address Resolution Protocol (ARP) cache entry?

1. A. ICMP echo request, ARP request, ARP reply, ICMP echo repl
2. B. ARP request, ARP reply, ICMP echo request, ICMP echo repl
3. C. ICMP echo request, ICMP echo reply, ARP request, ARP repl
4. D. ICMP echo request, ARP reply, ARP request, ICMP echo repl

Correct Answer: B

How many of the front access card slots of the Alcatel-Lucent 7750 SR-12 router are dedicated for redundant common equipment?

1. A. 1
2. B. 2
3. C. 7
4. D. 10

Correct Answer: B

Which of the following IP header fields contains information that indicates whether routers are allowed to fragment a packet?

1. A. Header checksu
2. B. Fragmentation offse
3. C. Flag
4. D. Identificatio

Correct Answer: C