VUE/Prometric Code: 642-845
Exam: Optimizing Converged Cisco Networks
Q&A:184 Q&As
CCNP 642-845 문제는 시험문제의 변화에 따라 업데이트가 될것입니다.시험문제가 매번 바뀐 후, 2일내에 시험문제 642-845를 수정하여 다시 조정함으로서642-845:Optimizing Converged Cisco Networks가 시험문제의 점유률을 항상 96% 이상으로 확보합니다.
6. 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
7. Which three configuration tasks are required to successfully deploy NBAR to recognize TCP and UDP
stateful protocols? (Choose three.)
A. Over leased lines, use the multilink ppp command to reduce latency and jitter, and to create Distributed
Link Fragmentation and interleaving.
B. Use the service-policy command to attach a traffic flow to an interface on the router.
C. Use the ip rsvp bandwidth command to set a strict upper limit on the bandwidth NBAR uses, and toguarantee admission of any flows.
D. Use the policy-map command to define one or more QoS policies (such as shaping, policing, and so
on) to apply to traffic defined by a class map.
E. Use the random-detect dscp command to modify the default minimum and maximum thresholds for the
DSCP value.
F. Use the class-map command to define one or more traffic classes by specifying the criteria by which
traffic is classified.
Answer: BDF
8. 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
9. Voice activity detection (VAD) suppresses the transmission of silence patterns. On average, and
assuming that a link carries at least 24 calls, what percentage of total bandwidth could VAD save?
A. 5
B. 15
C. 25
D. 35
E. 45
F. 55
Answer: D
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