单项选择题

To ensure voice packets are kept within the Committed Information Rate （CIR） of a Frame Relaylink， what should be used in the CPE？（）

A. prioritization
B. classification
C. fragmentation
D. traffic shaping

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单项选择题

Which QoS requirement applies to streaming video traffic？（）

A. one-way latency of 150 ms to 200 ms
B. jitter of 30 ms or less
C. packet loss of 2 percent or less
D. 150bps of overhead bandwidth

单项选择题

The Cisco MDS 9000 Series Multilayer SAN Switches can help lower the total cost of ownership ofthe most demanding storage environments. By combining a robust and flexible hardwarearchitecture with multiple layers of network and storage-management intelligence， the Cisco MDS 9000 Series helps you build highly available， scalable storage networks with advanced securityand unified management. What method does the Cisco MDS 9000 Series use to support trunking？（）

A. ISL
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多项选择题

Which two are characteristics of RSVP？（）

A. RSVP itself provides bandwidth and delay guarantees.
B. For RSVP to be end-to-end， all devices must support RSVP.
C. RSVP reservations are maintained by a centralized reservations server.
D. An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.