642-741 - Implementing Cisco Unified Wireless Voice Networks
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Which keypad sequence will reset the Cisco Unified Wireless IP Phone 7921 to factory default?
Which two EAP types does the Cisco Unified Wireless IP Phone 7921G firmware code version 1.3(x) support? (Choose two.)
Which three actions are required to access the network statistics on a remote Cisco Unified Wireless IP Phone 7921G via a web browser? (Choose three.)
Use HTTPS:// preceding the address of the phone.
Change web access to read/write for the MAC address of the phone on Cisco Unified Communications Manager.
Enter the username and password of the phone.
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?
Yes, by modifying the LWAPP frame header DSCP value in transit.
What is the bandwidth requirement of an active duplex wireless call using G.711 codec?
Which two actions can be configured by a wireless station using ADDTS when Call Admission Control is configured? (Choose two.)
Modify access category parameters used for APSD.
Gain admission to use an access category within a BSS.
Which three are benefits of U-APSD? (Choose three.)
synchronization of the transmission and reception of voice frames
optimized power-save mode periods
increased call capacity
What two benefits result from Cisco WLC configuration of DCA for 5-GHz VoWLAN deployments? (Choose two.)
Manually remove channels not supported by the VoWLAN clients.
Automatically avoid nearby radar.
Which three call information items does AirMagnet VoFi Analyzer provide? (Choose three.)
the codec used by the calling phone
approximate length of the call in minutes
MOS values throughout the duration of the call
Which statement is correct for the LWAPP/CAPWAP AP upstream encapsulated frame for a WMM-associated client frame that is centrally switched running v5.2?
Wireless client WMM UP classification is translated to a wired DSCP priority.
Which two statements are correct if IGMP snooping is enabled on a Cisco WLC? (Choose two.)
The IGMP packets from the wireless clients are received at the Cisco WLC, which in turn generates a query for the client.
The router IGMP table is updated with the IP address of the Cisco WLC as the last reporter.
What standard is WMM based on?
Which two statements are true about Cisco WLC load-based CAC? (Choose two.)
The RF bandwidth reserved by the Cisco WLC is per channel.
The ""Reserved for Roaming Bandwidth percent"" is bandwidth taken from the ""Max RF Bandwidth (%)"".
Which explanation describes a wireless client IGMP multicast join request using a Cisco Unified Wireless Network v5.2 architecture of AP to WLAN controller?
passed by the AP to the WLAN controller, which creates an MGID table entry before forwarding to the directly connected PIM-enabled router
For which WMM queue is U-APSD most beneficial?
What is the WMM user priority of the packets going downstream to the client when the client does not support TSPEC but the Cisco WLC has ACM enabled and WLAN priority is set to Platinum?
What is recommended for a wireless LAN infrastructure configuration when using SVP-version SpectraLink phones?
Disable WMM policy on the WLAN.
On the Cisco Aironet Access Points connected to a Cisco Unified Wireless LAN controller, which TCLAS queue transmits RTP packets with correct 802.11e QoS markings?
Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?
What is the Cisco recommendation for VLAN configuration as it relates to QoS for VoWLAN configuration?
A dedicated VLAN should be defined to allow for QoS trust boundary extension to voice devices without having to extend it to data devices.
Which configuration is required for a Vocera badge to function properly on a Cisco WLC?
set DTIM = 1
What is the minimum configuration you must do in order to enable multicast support on the Cisco Wireless LAN Controller v5.2?
Set the Ethernet multicast mode to Multicast and define the multicast group address.
What frame type is used to signal TSPEC reservation from a client?
For which two of these purposes are Cisco Spectrum Expert used? (Choose two.)
audit microwave oven interference
audit 802.11a channel 36 utilization
Which three WLC items are required to properly enable queuing with TSPEC for voice traffic? (Choose three.)
configure WLAN setting to enable WMM
configure global 802.11b/g or 802.11a, or both, voice CAC
configure WLAN QoS Platinum
Which configuration should be done in order to improve the performance of the Cisco Unified Wireless IP Phone 7921G in a WLAN infrastructure?
enable short preamble
Which information element will the client use if the client intends to use a different PHY rate than the nominal PHY rate advertised?
Which statement is NOT a key QoS recommended requirement for voice bearer traffic?
Voice traffic loss should be no more than 3%.
Which two statements are correct regarding multicast implementation using a WLAN controller (v5.2) and AP? (Choose two.)
Multicast traffic is sent out on Cisco APs at the highest mandatory data rate.
If there is more than one mandatory data rate, multicast traffic will be sent at the highest mandatory rate and beacons will be sent at the lowest mandatory rate.
Which two range descriptions correctly describe IP addressing to use when enabling multicast support using the Cisco Unified Wireless Solution? (Choose two.)
administratively scoped address range that does not overlap with a link-local MAC address
site-local scoped address range
Which ITU-T standard specifies components and protocols that provide real-time audio, video, and data communication over a packet-switched network?
What will improve the battery life of a Cisco Unified Wireless IP Phone 7921G?
configuring DTIM period to 2
What is the Cisco recommended EDCF queue to use for voice TSPEC?
How do Cisco Unified Communications IP phones receive firmware upgrades?
TFTP download based on version control through Cisco Unified Communications Manager
What must be true about the client before upstream traffic stream metrics can be displayed on the Cisco WLC?
must be Cisco Compatible Extensions version 4
What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?
Which three statements are true about load-based Call Admission Control? (Choose three.)
grants a VoWLAN client-initiated call based on channel bandwidth capacity
uses 802.11 action frames
requires a WMM-enabled client
What are two design considerations for a WLAN to support voice? (Choose two.)
Packet loss is less than one percent.
Signal strength at cell edge is approximately -67 dBm.
Which statement correctly describes a wireless client Layer 2 roam from AP1 to AP2 while joined to a multicast stream using Cisco WLC running v5.2?
Client resumes multicast after association with AP2, because multicast information is sent in mobility exchanges and AP2 is already a member of the multicast group, regardless if any other clients have already joined that multicast.
Which statement describes the call behavior of the Cisco Unified Wireless IP Phone 7921G when it roams from 802.11b to 802.11a?
The phone does a disassociation on 802.11b and an association on 802.11a, and call remains up if the subnet has not changed.
When using simultaneous voice and multicast on a single WLAN and RF band, what is the recommended DTIM value of the WLAN for VoWLAN devices?
DTIM = 1
Which two multicast modes are valid options for use with Ethernet bridging on a mesh AP? (Choose two.)
Which deployed VoWLAN client security option is recommended by Cisco?
Layer 2 with Layer 2 Security set to 802.1X
Which three solutions does AirMagnet VoFi Pro Analyzer integrate? (Choose three.)
Cisco Unified Communications Manager
Vocera Server to display the username of the Vocera badge
Polycom SpectraLink syslog server
What is the Cisco recommended setting for the Cisco WLCv5.2 DHCP Required on the WLAN for the Cisco Unified Wireless IP Phone 7921G?
DHCP Required should be disabled because there are some 802.11 control messages that can impact roaming.
Which two pieces of information does the Cisco WLC v5.2 client monitor feature provide about a VoWLAN client? (Choose two.)
RSSI of the client at the access point
What is the recommended minimum speed at the edge of the cells in an 802.11g network for a good Cisco VoWLAN deployment?
Which two statements correctly describe a Cisco WLC configuration of Wireless > QoS > Profiles > Wired_QoS_Profiles for an implementation of DSCP or CoS deployment? (Choose two.)
It is optional if the Cisco WLC attached switch operates on a trust DSCP model.
It must be set if the Cisco WLC attached switch operates on a trust CoS model.
What is the purpose of the WLC Controller->Multicast->IGMP Timeout feature operating on v5.2?
to determine if there are more clients that are using the multicast stream
Which protocol is used by multicast to prevent loops?