It is well known that CCIP 642-642 - 642-642 exam test is the hot exam of Cisco certification. passfourside offer you all the Q&A of the 642-642 real test . It is the examination of the perfect combination and it will help you pass 642-642 exam at the first time!

The CCIP 642-642 Questions and Answers as well as our other CCIP 642-642 exam training tools are not only priced to be easy on your budget - but each one is also backed with our guarantee. passfourside guarantees that after using our Cisco certification training tools, you will be prepared to take and pass your CCIP 642-642 exam.

Our on-site online training experts create all of the Cisco 642-642 exam products available through passfourside. Our main goal is to get your certified with a firm understanding of the core material. Whereas other online distributors only concern themselves with helping you obtain the paper, we strive to educate the certification candidate and better prepare them for their IT career.

　
　
Exam : Cisco 642-642
Title : Quality of Service (QOS)


1. 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

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. 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

4. 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

5. 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

Why choose passfourside 642-642 braindumps

Quality and Value for the 642-642 Exam
100% Guarantee to Pass Your 642-642 Exam
Downloadable, Interactive 642-642 Testing engines
Verified Answers Researched by Industry Experts
Drag and Drop questions as experienced in the Actual Exams
Practice Test Questions accompanied by exhibits
Our Practice Test Questions are backed by our 100% MONEY BACK GUARANTEE.