642-845 Exam
Optimizing Converged Cisco Networks
* Exam Number/Code : 642-845
* Exam Name : Optimizing Converged Cisco Networks
* Questions and Answers : 185 Q&As
* Update Time: 2010-06-08
* Price: $ 80.00
Exam : Cisco 642-845
Title : Optimizing Converged Cisco Networks
1. Which two statements are true about the implementation of QoS? (Choose two.)
A. Implementing DiffServ involves the configuration of RSVP.
B. Implementing IntServ allows QoS to be performed by configuring only the ingress and egress devices.
C. Implementing IntServ involves the utilization of RSVP.
D. Traffic should be classified and marked by the core network devices.
E. Traffic should be classified and marked as close to the edge of the network as possible.
Answer: CE
2. Which codec standard would provide the highest voice-quality, mean opinion score (MOS)?
A. G.711, PCM
B. G.728, LDCELP
C. G.729, CS-ACELP
D. G.729A, CS-ACELP
Answer: A
3. Which two statements are true about the function of CAC? (Choose two.)
A. CAC provides guaranteed voice quality on a link.
B. CAC artificially limits the number of concurrent voice calls.
C. CAC is used to control the amount of bandwidth that is taken by a call on a link.
D. CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.
E. CAC allows an unlimited number of voice calls while severely restricting, if necessary, other forms of traffic.
F. CAC solves voice congestion problems by using QoS to give priority to UDP traffic.
Answer: BD
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