642-742 試験問題を無料オンラインアクセス

Which two statements are correct if IGMP snooping is enabled on a Cisco WLC v7.0?
(Choose two.)

• A.The IGMP packets from the wireless clients are received at the WLC and are used to update the router via a Cisco Group Management Protocol update from the Cisco WLC.
• B.The router IGMP table is updated with the IP address of the wireless clients as the last reporter.
• C.The IGMP packets from the wireless clients are received at the Cisco WLC, which generates a query for the client.
• D.The IGMP packets from the wireless clients are forwarded to the router without modifications.
• E.The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.

Which two statements best describe video conferencing? (Choose two.)

• A.Video streams require maximum quality compression and decompression.
• B.Video streams require high-speed compression and decompression.
• C.H.323 codecs are commonly used.
• D.MPEG codecs are commonly used.

Refer to the exhibit.

Voice bearer traffic is being sent downstream using a WLAN configured for gold QoS. Which two of these options indicate the inner 802.11e QoS markings and QoS CAPWAP markings that are used at location 1? (Choose two.)

• A.Inner 802.11e: UP 6
• B.Outer CAPWAP: DSCP EF and CoS 5
• C.Outer CAPWAP: DSCP 46 and CoS 4
• D.Outer CAPWAP: DSCP AF41 and CoS 4
• E.Outer CAPWAP: CoS 5
• F.Outer CAPWAP: DSCP AF31 and CoS 3
• G.Inner 802.11e: UP 3
• H.Inner 802.11e: UP 5

What are the benefits from enabling TSM for a VoWLAN using a WLC v7.0?

• A.provides packet loss, latency, and additional parameters on VoWLAN call segment
• B.provides packet loss covering the end-to-end voice path on all links and additional parameters on VoWLAN segment
• C.provides packet loss and latency covering the end-to-end voice path on all links
• D.provides packet loss and latency covering the end-to-end voice path on all links and additional parameters on the VoWLAN segment

After enabling global multicast, multicast traffic has been flooding the wired and wireless network. The wireless engineer has been troubleshooting and is attempting to find the source of the traffic. What command will display the multicast traffic source as well as the incoming interface?

• A.show ip device tracking all
• B.show ip igmp groups
• C.show ip mroute
• D.show ip pim neighbor