单选题Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）A duplicate sender packetsB unicast packet retry rateC unicast packet retry ratioD association rejections

考题 Typically, an IP address refers to an individual host on a particular network. IP also accommodates addresses that refer to a group of hosts on one or more networks. Such addresses are referred to as multicast addresses, and the act of sending a packet from a source to the members of a （1）group is referred to as multicasting. Multicasting done （2）the scope of a single LAN segment is straightforward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN Segment. Those stations that are members of the （3）multicast group recognize the multicast address and （4）the packet. In this case, only a single copy of the packet is ever transmitted. This technique works because of the （5）nature of a LAN: A transmission from any one station is received by all other station on the LAN. 空白（5）应选（）。 A. Multicast B. unicast C. broadcast D. multiple unicast

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考题 Anytime a host or a router has an IP datagram to send to another host or router, it has the（　）address of the receiver. This address is obtained from the DNS if the sender is the host or it is found in a routing table if the sender is a router. But the IP data gram must be（　） in a frame to be able to pass through the physical network. This means that the sender needs the （　）address of the receiver. The host or the router sends an ARP query packet. The packet includes the physical and IP addresses of the sender and the IP address of the receiver. Because the sender does not know the physical address of the receiver, the query is（　） over the network.Every host or router on the network receives and processes the ARP query packet, but only the intended recipient recognizes its IP address and sends back an ARP response packet.The response packet contains the recipient's IP and physical addresses. The packet is（请作答此空） directly to the inquirer by using the physical address received in the query packet. A. multicast B. unicast C. broadcast D. multiple unicast

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考题 Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）A、duplicate sender packetsB、unicast packet retry rateC、unicast packet retry ratioD、association rejections

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考题 Which two EAP types does the Cisco Unified Wireless IP Phone 7921G firmware code version 1.3(x) support?（）A、EAP-TLSB、EAP-TTLSC、EAP-SIMD、PEAPv1/EAP-GTCE、LEAP

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考题 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?（）A、UPB、VOC、VID、BKE、BE

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考题 What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A、CS3B、CS1C、EFD、5E、6

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考题 What does a Cisco Unified Wireless IP Phone 7921G deployment require（）？A、more access points than a data networkB、fewer access points than a data networkC、less SNR than a data networkD、specific relative access point placement

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考题 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 balancingB、enable coverage hole detectionC、disable dynamic transmit power controlD、enable short preamble

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考题 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.

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考题 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 recommendationsB、100 percent to ensure that the VoWLAN calls can use all the available bandwidth, if neededC、system default of 75 percentD、40 to 60 percentE、voice CAC should be left disabled unless wired QoS is configured

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考题 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.

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考题 Which keypad sequence will reset the Cisco Unified Wireless IP Phone 7921 to factory default?（）A、***B、**#C、**1D、**2

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考题 What will improve the battery life of a Cisco Unified Wireless IP Phone 7921G?（）A、configuring phone to auto select networkB、configuring beacon period to 80 msC、configuring DTIM period to 2D、enabling RRM

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考题 Which two statement best describes the Cisco Unified Wireless Network？（）A、 The Cisco Unified Wireless Network provides the framework to segregate wired and wireless networks to deliver the best security for companies that are deploying WLANsB、 The Cisco Unified Wireless Network provides the framework to integrate and extend wired and wireless networks to deliver the lowest-possible total cost of ownership for companies that are deploying WLANsC、 The Cisco Unified Wireless Network extends wireless awareness into important elements of the network infrastructure， providing the same level of security for WLANs that organizations have come to expect from their VPNsD、 The Cisco Unified Wireless Network extends wireless awareness into important elements of the network infrastructure， providing the same level of security， sociability， reliability， ease of deployment， and management for WLANs that organizations have come to expect from their wired LANs

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考题 What call performance statistics are reported on the Cisco Wireless IP Phone 7921 user interface?（）A、minimum jitterB、maximum jitterC、upstream standard packet deviationD、average MOS valueE、average conceal rate

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考题 Which three actions are required to access the network statistics on a remote Cisco Unified Wireless IP Phone 7921G via a web browser?（）A、Browse to the phone using the MAC address of the phone.B、Use HTTPS:// preceding the address of the phone.C、Change web access to read/write for the MAC address of the phone on Cisco Unified Communications Manager.D、Enter the username and password of the phone.E、Ensure that the host is on the same subnet as the remote phone.

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考题单选题What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A CS3B CS1C EFD 5E 6

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考题单选题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 recommendationsB 100 percent to ensure that the VoWLAN calls can use all the available bandwidth, if neededC system default of 75 percentD 40 to 60 percentE voice CAC should be left disabled unless wired QoS is configured

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考题单选题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?（）A UPB VOC VID BKE BE

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考题单选题What does a Cisco Unified Wireless IP Phone 7921G deployment require（）？A more access points than a data networkB fewer access points than a data networkC less SNR than a data networkD specific relative access point placement

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考题单选题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 balancingB enable coverage hole detectionC disable dynamic transmit power controlD enable short preamble

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考题单选题What will improve the battery life of a Cisco Unified Wireless IP Phone 7921G?（）A configuring phone to auto select networkB configuring beacon period to 80 msC configuring DTIM period to 2D enabling RRM

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考题单选题Which keypad sequence will reset the Cisco Unified Wireless IP Phone 7921 to factory default?（）A ***B **#C **1D **2

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考题单选题Which wireless LAN statistics are reported from the Cisco Unified Wireless IP Phone 7921G via a directly connected web browser?（）A duplicate sender packetsB unicast packet retry rateC unicast packet retry ratioD association rejections

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考题多选题Which two EAP types does the Cisco Unified Wireless IP Phone 7921G firmware code version 1.3(x) support?（）AEAP-TLSBEAP-TTLSCEAP-SIMDPEAPv1/EAP-GTCELEAP

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考题单选题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.

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考题单选题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.

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考题单选题What call performance statistics are reported on the Cisco Wireless IP Phone 7921 user interface?（）A minimum jitterB maximum jitterC upstream standard packet deviationD average MOS valueE average conceal rate

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