CCNA Training - CCNP Training Certification Exam Q&A-25

Which of the following terms does NOT describe TCP?

A. best-effort delivery

B. guaranteed delivery

C. uses acknowledgement numbers

D. has no method of detecting lost segments

Answers: A, D. Those two terms describe UDP. TCP does have guaranteed delivery and it does have a method of detecting lost segments.

CCNP Training Certification / BCMSN Exam :

Classification and marking of data should be done at what layer of the Cisco switching model?

Answer: That should take place as close to the origination point of the data as possible, which means the Access layer.

CCNP Training Certification / ISCW Exam :

You notice that TCP keepalives are enabled on a router, and you want to disable this feature. What global configuration command will you need to use?

Answer: This is a router service, so we'll use the no service tcp-keepalives command.

CCNP Training Certification / ONT Exam :

RED has three different modes of packet dropping. Name them.

Answers: "no drop", used when the number of packets in the queue is less than the minimum threshold; "random drop", used when the number of packets in the queue is between the minimum and maximum threshold values; "tail drop", used only when the number of packets exceeds the max threshold. Tail drop can lead to TCP Global Synchronization issues.