NowExam! Free Product Cisco certification 642-642 dumps training materials,642-642 Questions & Answers: This course dumps enable students to master the system quickly and study Cisco 642-642 Questions & Answers, Quality of Service (QoS) a comprehensive and detailed the various functions IP_Communications, 642-642 pdf Exam is a certification of the IP_Communications Managing Cisco Dynamics Implementations official test 642-642, If you need to obtain IP_Communications license, you may also need to add other relevant examinations badly, please visit IP_Communications Simulation exam authentication feature, where you will see all the IP_Communications certificate examination subjects related.
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?Â
A. by using class-based policing on the CE to PE link to limit the customer’s input rateÂ
B. by using class-based random discard on the CE to PE link to limit the customer’s input rateÂ
C. by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P linkÂ
D. by marking on the CE to PE link and using class-based policing on the PE to P linkÂ
Answer: AÂ
2. Refer to the following parameters, which of the following are not traffic characteristics that can be affected by QoS tools?Â
A. DelayÂ
B. MTUÂ
C. ReliabilityÂ
D. BandwidthÂ
Answer: CÂ
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)Â
A. Voice sounds choppy.Â
B. Calls are disconnected.Â
C. VoIP broadcasts increase as Queuing delay increases, causing delay and caller interaction problems.Â
D. Voice call requires more bandwidth as lost packets are retransmitted.Â
Answer: ABÂ
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.)Â
A. WFQ is very easy to configure, and no manual traffic classification is necessary.Â
B. WFQ can provide fixed-delay guarantees.Â
C. WFQ can provide fixed-bandwidth and fixed-delay guarantees.Â
D. WFQ can provide fixed-bandwidth guarantees.Â
E. WFQ prevents the large-volume flows with large packet size from starving out the low-volume flows with small packet size.Â
Answer: AE
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