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QUESTION 124
Which type of classification mechanism does the Cisco IP phone use?
A. ISL
B. Q.931
C. G.729a
D. 802.1p/Q
E. Spanning Tree

Correct Answer: D Section: (none) Explanation
Explanation/Reference: Explanation:
Streaming video applications, such as IPTV video on demand (VoD) programs, are relatively high bandwidth applications with a high tolerance for loss, delay, and delay variation. As such, significant QoS tools are not required to meet the needs of these applications. However, in most enterprise environments, these types of applications are considered more important than regular background applications (such as e-mail and web browsing) and should be given preferential treatment. A Layer 2 classification of CoS 1 in 8021.Q/802.1p environments should be used for these applications.

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QUESTION 112
Which of the following statements best describes the characteristics of a network that is well designed for QoS?
A. Packets are classified at each router within the network. The classification is based on as many details as possible, typically using extended IP ACLs to match the packets.
B. Packets are classified based on their position from the hub and the closeness to the router. All the packets are manually classified based on their positioning and flow of the router.
C. Packets are classified based on socket address, at the router closets to the source of the traffic. The packets are characterized automatically based on flow at the routersin the middle of the network.

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QUESTION 45
Which of these statements best describes VPLS?
A. Neither broadcast nor multicast traffic is ever flooded in VPLS.
B. Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.
C. VPLS emulates an Ethernet switch, with each EMS being analogous to a VLAN.
D. Because U-PE devices act as IEEE 802.1 devices, the VPLS core must use STP.
E. When the provider experiences an outage, IP re-routing restores PW connectivity and MAC re-learning is needed.

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
QUESTION 46
How does ERS use the VLAN tag?

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QUESTION 60
Your newly appointed Certkiller trainee wants to know which IEEE wireless standard will allow backward compatibility with 802.11b.
What would your reply be?
A. 802.1q
B. 802.11g
C. 802.11a
D. 802.1g
E. 802.11p

Correct Answer: B Section: (none) Explanation
Explanation/Reference: Explanation:
The 802.11g standard operates in the same unlicensed portion of the 2.4-GHz spectrum as 802.11b. Both the IEEE 802.11g and 802.11a standards provide a 54-Mbps data rate. IEEE 802.11g provides the benefit of backward compatibility with IEEE 802.11b equipment, preserving users investment in their existing WLAN infrastructure.

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Exam A
QUESTION 1
How would you define a fault tolerant device?
A. A backup path exists for every link between the client and the server.
B. Key components can be hot-swapped.
C. A backup device exists for every device between the client and the server.
D. Devices in the network can be hot-swapped without interrupting the network operation.
E. The device provides redundant backup within the device for each of its key components.
Correct Answer: E Section: (none) Explanation
Explanation/Reference: Explanation:
Device fault tolerance and redundancy: This is often the first level of availability in the network. Fault-tolerant devices provide a high level of reliability. Cisco offers options for redundant supervisor engines and dual power supplies, which provide the first backstop against a network failure.

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