Associated Certifications: CCIP, CCVP, IP Telephony Design Specialist, IP Telephony Express Specialist, IP Telephony Operations Specialist, and IP Telephony Support Specialist
Duration: 90 minutes (45-55 questions)
Available Languages: English and Japanese
642-642 Exam Description
The QOS exam is one of the qualifying exams for the Cisco Certified Internetwork Professional, Cisco Certified Voice Professional, Cisco IP Telephony Design Specialist, Cisco IP Telephony Express Specialist, Cisco IP Telephony Operations Specialist, and Cisco IP Telephony Support Specialist certifications. The QOS 642-642 exam will test materials covered under the Implementing Cisco Quality of Service QOS v2.1 course.
642-642 Exam Demo
5. 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
6. 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
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