多项选择题

You are the Cisco Network Designer in Cisco.com. Which two statements about Layer 3 access designs are correct?（）

A. Convergence time is fractionally slower than STP.
B. Broadcast and fault domains are increased.
C. IP address space is difficult to manage.
D. Fast uplink convergence is supported for failover and fallback.

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单项选择题You are the Cisco Network Designer in Cisco.com. Which layer NAS operating mode are ACL filtering and bandwidth throttling only provided during posture assessment?（）

A. Layer 2
B. Layer 3
C. Layer 4
D. out-of-band

单项选择题To ensure voice packets are kept within the Committed Information Rate (CIR) of a Frame Relay link, what should be used in the CPE?（）

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

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 of the most demanding storage environments. By combining a robust and flexible hardware architecture with multiple layers of network and storage-management intelligence, the Cisco MDS 9000 Series helps you build highly available, scalable storage networks with advanced security and unified management.What method does the Cisco MDS 9000 Series use to support trunking?（）

A.ISL
B.VLAN Trunk
C.VoQ
D.Enhanced ISL

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.