單項選擇題What is the payload size of a wireless IP phone in a call using G.711 codec?()

A.20 bytes
B.60 bytes
C.120 bytes
D.160 bytes


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1.單項選擇題What call performance statistics are reported on the Cisco Wireless IP Phone 7921 user interface?()

A.minimum jitter
B.maximum jitter
C.upstream standard packet deviation
D.average MOS value
E.average conceal rate

2.單項選擇題Which statement describes the call behavior of the Cisco Unified Wireless IP Phone 7921G when it roams from 802.11b to 802.11a?()

A.The phone does a directed call hangup on 802.11b,then does an auto-redial on 802.11a,creating a  new call.
B.The phone does a directed call hangup on 802.11b, then the user does a redial on 802.11a,creating a  new call.
C.The phone does a disassociation on 802.11b and an association on 802.11a,and call remains up if the  subnet has not changed.
D.The phone does not roam from 802.11b to 802.11a when on an active call.
E.The phone must switch network profiles to roam from 802.11b to 802.11a.

3.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

4.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

5.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

6.單項選擇題How do Cisco Unified Communications IP phones receive firmware upgrades?()

A.user request using the keypad of the phone and HTTP download
B.IT department scheduled upgrade using HTTP download
C.TFTP download based on version control through Cisco Unified Communications Manager
D.FTP download based on version control through Cisco Unified Communications Manager
E.HTTP download based on version control through Cisco Unified Communications Manager

7.單項選擇題Which deployed VoWLAN client security option is recommended by Cisco?()

A.Layer 3 with Layer 3 Security set to None and Web Policy set to Authentication
B.Layer 3 with Layer 3 Security set to None and Web Policy set to VPN Pass-Through
C.Layer 3 with Layer 3 Security set to VPN Pass-Through
D.Layer 2 with Layer 2 Security set to 802.1X

8.單項選擇題An LWAPP encapsulated packet is being sent from the Cisco WLC v5.2 to the AP for a wireless WMM client. Can the LWAPP frame be altered to change the resulting final WMM queue for transmission on an 802.11 client?()

A.Yes,by modifying the LWAPP frame header DSCP value in transit.
B.Yes,by modifying the LWAPP frame header 802.1p value in transit.
C.No,the WMM queue classification parameter is transported inside the LWAPP tunnel.
D.No,the WMM queue classification parameter is determined at the AP based on the original client IP  header DSCP value.

9.單項選擇題Which statement is NOT a key QoS recommended requirement for voice bearer traffic?()

A.Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.
B.Voice traffic loss should be no more than 3%.
C.One-way latency (mouth-to-ear) should be less than 150 msec.
D.Average one way jitter should be targeted to less than 30 msec.
E.21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate,codec,and  layer 2 overhead.

10.多項選擇題For which two of these purposes are Cisco Spectrum Expert used?()

A.audit VoWLAN cell edge coverage
B.verify RFID tag coverage by four access points at -75 dBm
C.audit microwave oven interference
D.audit 802.11a channel 36 utilization
E.create test scripts for 802.11n bonded channel throughput tests

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