單項選擇題Which protocol is used by multicast to prevent loops?()

A.OSPF
B.RIP
C.RPF
D.BGP
E.EIGRP


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3.單項選擇題Which statement describes the WLCv5.2 delivery of a multicast packet from a wired PC source on VLAN_X to a respective wireless client using SSID_X, using a WLAN controller enabled for multicast?()

A.A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, and finally  to all wireless clients of that Cisco WLC, via wireless multicast.
B.A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, and finally to  all wireless clients of that Cisco WLC, via wireless unicast.
C.A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, discarded  at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joinedwireless clients  via wireless multicast.
D.A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, discarded at  APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joined wireless clients  via wireless multicast.
E.A packet is delivered to Cisco WLC and forwarded via multicast to all of its associated APs, discarded  at APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joinedwireless clients  via wireless unicast.
F.A packet is delivered to Cisco WLC and forwarded via unicast to all of its associated APs, discarded at  APs without SSID_X joined wireless clients, and forwarded at APs with SSID_X joined wireless clients  via wireless unicast.

4.單項選擇題Which configuration should be done in order to improve the performance of the Cisco Unified Wireless IP Phone 7921G in a WLAN infrastructure?()

A.enable aggressive load balancing
B.enable coverage hole detection
C.disable dynamic transmit power control
D.enable short preamble

5.多項選擇題Which two multicast modes are valid options for use with Ethernet bridging on a mesh AP?()

A.mesh bridge in
B.regular
C.bi-directional bridge
D.in
E.out

6.單項選擇題Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?()

A.duplicate sender packets
B.unicast packet retry rate
C.unicast packet retry ratio
D.association rejections

7.單項選擇題Which configuration is required for a Vocera badge to function properly on a Cisco WLC?()

A.disable higher data rates
B.set DTIM = 1
C.disable RRM
D.disable broadcast SSID
E.disable multicast

8.單項選擇題What is the Cisco recommended setting for the Cisco Unified Wireless Network WLC Voice Call Admission Control Max RF Bandwidth to support the Cisco Unified Wireless IP Phone 7921G?()

A.nominally 30 percent to best align with Cisco Unified Communications System recommendations
B.100 percent to ensure that the VoWLAN calls can use all the available bandwidth, if needed
C.system default of 75 percent
D.40 to 60 percent
E.voice CAC should be left disabled unless wired QoS is configured

9.多項選擇題Which two pieces of information does the Cisco WLC v5.2 client monitor feature provide about a VoWLAN client?()

A.RSSI of the client at the access point
B.WMM state
C.current MOS value
D.current RF channel
E.current transmit data rate

10.多項選擇題Which three are benefits of U-APSD?()

A.synchronization of the transmission and reception of voice frames
B.bandwidth reservation
C.optimized power-save mode periods
D.increased call capacity
E.priority bandwidth and polling

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