シスコがお薦めする認定取得モデルはいくつかありますが、知識と技能を示すためにどのモデルにおいても、必要条件として 1 つ以上の試験を合格する必要があります。すべてのモデルにおいて、技術の向上と一貫性のある結果を裏付けるために総合的な筆記試験が取り入れられています。
認定には、筆記試験のほかに実践型のラボ試験の合格が必要となります。
Quality of Service (QoS) の問題集を紹介して、642-642 受験題皆と分かち合います
1. SLA(Service-Level Agreement) is a contract between a network service provider and a customer, which
usually defines such terms as the type of service, the quality of service and the customer's payment. In an
unmanaged CE router implementation, how does the service provider enforce the SLA?
A. by using class-based policing on the CE to PE link to limit the customer's input rate
B. by using class-based random discard on the CE to PE link to limit the customer's input rate
C. by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P link
D. by marking on the CE to PE link and using class-based policing on the PE to P link
Answer: A
2. Refer to the following parameters, which of the following are not traffic characteristics that can be
affected by QoS tools?
A. Delay
B. MTU
C. Reliability
D. Bandwidth
Answer: C
3. After learning QoS, for the following options, Which of the following characterize problems that could
occur with voice traffic when QoS is not applied in a network?(choose two)
A. Voice sounds choppy.
B. Calls are disconnected.
C. VoIP broadcasts increase as Queuing delay increases, causing delay and caller interaction problems.
D. Voice call requires more bandwidth as lost packets are retransmitted.
Answer: AB
4. WFQ(Weighted Fair Queuing) is a data packet scheduling technique allowing different scheduling
priorities to statistically multiplexed data flows. For the following statements, what are two benefits of
WFQ?
(Choose two.)
A. WFQ is very easy to configure, and no manual traffic classification is necessary.
B. WFQ can provide fixed-delay guarantees.
C. WFQ can provide fixed-bandwidth and fixed-delay guarantees.
D. WFQ can provide fixed-bandwidth guarantees.
E. WFQ prevents the large-volume flows with large packet size from starving out the low-volume flows
with
small packet size.
Answer: AE
5. As a candidate for CCVP exam, can you tell me what does a router base its opinion of how much
bandwidth is available to a queuing tool on a serial interface?
A. The bandwidth command is required before a queuing tool knows how much bandwidth is available.
B. The automatically-sensed physical transmission rate on the serial interface.
C. The clock rate command is required before a queuing tool knows how much bandwidth is available.
D. Defaults to T1 speed, unless the bandwidth command has been configured.
Answer: D
6. For the following options, which of the following components of delay varies based on the varying sizes
of packets sent through the network?
A. Codec delay
B. Serialization delay
C. Queuing delay
D. Propagation delay
Answer: B
認定には、筆記試験のほかに実践型のラボ試験の合格が必要となります。
Quality of Service (QoS) の問題集を紹介して、642-642 受験題皆と分かち合います
1. SLA(Service-Level Agreement) is a contract between a network service provider and a customer, which
usually defines such terms as the type of service, the quality of service and the customer's payment. In an
unmanaged CE router implementation, how does the service provider enforce the SLA?
A. by using class-based policing on the CE to PE link to limit the customer's input rate
B. by using class-based random discard on the CE to PE link to limit the customer's input rate
C. by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P link
D. by marking on the CE to PE link and using class-based policing on the PE to P link
Answer: A
2. Refer to the following parameters, which of the following are not traffic characteristics that can be
affected by QoS tools?
A. Delay
B. MTU
C. Reliability
D. Bandwidth
Answer: C
3. After learning QoS, for the following options, Which of the following characterize problems that could
occur with voice traffic when QoS is not applied in a network?(choose two)
A. Voice sounds choppy.
B. Calls are disconnected.
C. VoIP broadcasts increase as Queuing delay increases, causing delay and caller interaction problems.
D. Voice call requires more bandwidth as lost packets are retransmitted.
Answer: AB
4. WFQ(Weighted Fair Queuing) is a data packet scheduling technique allowing different scheduling
priorities to statistically multiplexed data flows. For the following statements, what are two benefits of
WFQ?
(Choose two.)
A. WFQ is very easy to configure, and no manual traffic classification is necessary.
B. WFQ can provide fixed-delay guarantees.
C. WFQ can provide fixed-bandwidth and fixed-delay guarantees.
D. WFQ can provide fixed-bandwidth guarantees.
E. WFQ prevents the large-volume flows with large packet size from starving out the low-volume flows
with
small packet size.
Answer: AE
5. As a candidate for CCVP exam, can you tell me what does a router base its opinion of how much
bandwidth is available to a queuing tool on a serial interface?
A. The bandwidth command is required before a queuing tool knows how much bandwidth is available.
B. The automatically-sensed physical transmission rate on the serial interface.
C. The clock rate command is required before a queuing tool knows how much bandwidth is available.
D. Defaults to T1 speed, unless the bandwidth command has been configured.
Answer: D
6. For the following options, which of the following components of delay varies based on the varying sizes
of packets sent through the network?
A. Codec delay
B. Serialization delay
C. Queuing delay
D. Propagation delay
Answer: B