Cisco CCNP Wireless IUWVN

1.

What is the main difference between the Cisco Unified Wireless IP Phones 7921G and 7925G?

The 7925G supports 802.11a/b/g, whereas the 7921G supports only 802.11b/g. The 7925G is suited for a more rugged environment. The 7925G has support for 802.11n, whereas the 7921G does not. 7925G supports WPA2, whereas the 7921G supports only WPA1.

2.

You have two packets with decimal ToS values of 32 and 34. What are their results, respectively, in an IP precedence-only device?

Both packets have an IP precedence tag of CS4, and the packet with the decimal value of 34 has a higher drop probability. The packet with the decimal value of 32 has an IP precedence tag of CS4, while the other decimal value of 34 is ignored and treated as best effort. The packet with the decimal value of 34 has an IP precedence tag of CS4, while the other decimal value of 32 is ignored and treated as best effort. Both packets have a decimal value that results in an IP precedence tag of CS4.

3.

What is the difference between the QoS values on the wired and wireless sides of a WLAN?

The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5
and EF. The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 7. The wired side of the network uses CoS/DSCP valuesof 5 and 40. The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5and EF. The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 6. The wired side of the network uses CoS/DSCP valuesof 5 and EF.

4.

A wired packet that is marked for QoS priority CS4 arrives on VLAN-4 at the Cisco WLC v7.0, with a destination of a WLAN SSID-4. The Cisco WLC is configured for the wired and wireless QoS level of Silver. The infrastructure routers and switches have incorrect QoS configurations. They have mismarked the CAPWAP outer header to a QoS priority EF. Which statement is true about how the packet is sent from the AP to the final non-WMM wireless client?

The AP sends the packet with an 802.11 priority tag of 0 (Best Effort). The AP sends the packet with an 802.11 priority tag of 3 (Silver). The AP sends the packet with an 802.11 priority tag of 5 (Gold). The AP sends the packet with an 802.11 priority tag of 6 (Platinum).

5.

A wired packet that is marked for QoS priority CS4 arrives on VLAN-4 at Cisco WLC v7.0, with a destination of a WLAN SSID-4. The Cisco WLC is configured for the wired and wireless QoS level of Silver. The infrastructure routers and switches have incorrect QoS configurations. They have mismarked the CAPWAP outer header to a QoS priority EF.
Which statement is true about how the packet is sent from the AP to the final WMM wireless client?

The AP sends the packet with an 802.11 priority tag of 0 (Best Effort). The AP sends the packet with an 802.11 priority tag of 3 (Silver). The AP sends the packet with an 802.11 priority tag of 5 (Gold). The AP sends the packet with an 802.11 priority tag of 6 (Platinum).

6.

Which mechanism detects if VoWLAN clients are experiencing poor signal-to-noise ratio values and causes the power of APs to increase as needed in order to rectify signal-to-noise issues?

CCA RSSI 802.11h CHD QBSS

7.

A single Layer 2 multicast address can map to how many IPv4 multicast addresses?

1 8 16 28 32

8.

IGMP snooping has been enabled on a Cisco WLC v7.0, along with any other configurations that are required for wireless multicast. Which statement describes an IGMP leave message to a router when IGMP snooping is enabled?

The message is sourced from the wireless client. The message is sourced from the Cisco WLC management interface. The message is sourced from the Cisco WLC virtual interface. The message is sourced from the Cisco WLC dynamic interface. No message is sent, and the membership is timed out.

9.

Which four statements describe the attributes of streaming video? (Choose four.)

QoS marking is at CS4. Packet loss is limited to 5 percent. One-way latency is limited to 150 ms. One-way latency is limited to a few seconds. Jitter is limited to 30 ms.

10.

When Vocera badges communicate from badge to badge, which voice codec is used?

G.723 G.729A G.711 G.729B the Vocera proprietary codec

Cisco CCNP Wireless IUWVN

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