單項選擇題What is the purpose of IGMP in a multicast implementation?()

A. it is not used in multicast
B. it determines the virtual address group for a multicast destination
C. it dynamically registers individual hosts in a multicast group on a specific LAN
D. it is used on WAN connections to determine the maximum bandwidth of a connection
E. it determines whether Bidirectional PIM or PIM sparse mode will be used for a multicast flow


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1.單項選擇題Which content networking device allows bandwidth configuration settings so that streaming content will not interfere with other network traffic?()

A. IP/TV Control Server
B. Content Distribution Manager
C. Content Engine
D. IP/TV Broadcast Server

3.多項選擇題A security analysis at The Potomac Canal Company recommends installing an IDS appliance anda firewall appliance. These appliances should connect directly into a Layer 3 switch. A loadbalancer and SSL termination have also been recommended.Potomac’s management haveexpressed concern over the cost. You suggest using integrated blades. What is one advantage and one disadvantage of yourdesign proposal? ()

A. The data center would need several devices to achieve its goal.
B. Increased usage of standalone devices is cost-effective.
C. Using integrated blades would only require two devices.
D. Putting all security devices in a single chassis provides a single point of failure.

6.單項選擇題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

8.多項選擇題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.

10.單項選擇題What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?()

A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B. 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.
C. 79xx IP phones do not mark voice packets with optimal DSCP values.
D. 79xx IP phones use a custom protocol to communicate CDP information to the switch.

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