642-742 試験問題を無料オンラインアクセス

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?

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

A client reports that video is not streaming. The administrator determines the client is connecting at a data rate of 12 Mbps and is trying to stream to a valid multicast address on the network. What three items should the administrator check next to troubleshoot the issue? (Choose three.)

• A.RTSP is used to stream the video due to wireless multicast not using acknowledgements.
• B.SSID has been configured to allow multicast-direct and multicast-direct has been enabled globally.
• C.Video-stream for the multicast video is configured in the controller.
• D.SSID has been set for a QoS value of Gold.
• E.SSID has been set for a QoS value of Platinum.
• F.IGMP snooping is turned off because the client cannot request to join a group, only access points can.

Refer to the exhibit.

A controller has been completely configured to support high definition video over wireless. During the testing phase, a packet capture shows the video-stream traffic on the wire as best effort. What needs to be changed in the configuration to support QoS tags properly?

• A.add the line priority queue in
• B.add the line mls qos trust device wlc
• C.add the line mls qos trust dscp
• D.add the line mls qos trust cos

A web browser is opened to a new Cisco Unified Wireless IP Phone 7921G or 7925G connected to a windows computer via USB. Which statement describes the ability to read and write configuration parameters to prime the phone for its first VoWLAN association and its association to a Cisco Unified Communications Manager?

• A.Phone depends on Cisco Unified Communications Manager configuration.
• B.Phone read/write access depends on the firmware version.
• C.Phones are always read-only.
• D.Phones are read-only and require user to be authenticated as administrator for write access.

Which two VoWLAN configuration parameters are required to implement a Vocera Communications System on a Cisco WLC v7.0? (Choose two.)

• A.Enable WLC broadcast for WLANs.
• B.Enable WLC multicast for WLANs.
• C.Enable WLAN WMM.
• D.Adjust the radio EDCA profile.
• E.Disable WLAN WMM.