单选题IP Phone的原理是什么？（）AIPV4BDHCPCIPV6DDNS
单选题
IP Phone的原理是什么？（）
A
IPV4
B
DHCP
C
IPV6
D
DNS
参考解析
解析：
暂无解析
相关考题：
关于Voice VLAN的工作模式，说法正确的是（）。A、Voice VLAN的工作模式包含自动和手动两种B、自动模式下，系统会识别IP Phone发出的报文，如果匹配为语音报文，则将连接IP Phone的端口加入V.oice VLANC、手动模式下，需要手工将IP Phone加入Voice VLAN中D、手动模式下系统将不会向端口下发ACL
Which statement is true about a distributed call control environment and the processing of dialed digits from an IP phone？（）A、The router that is directly connected to the IP phone will look up the called number in its call routing table.B、The router that is directly connected to the IP phone will inform its call agent when a service request is detected.C、When the IP phone is picked up，the IP phone initiates the service request.D、The directly connected router passes the collected digits to its call agent，and the call agent looks up in its call-routing table the called number.
The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1. What does this command do？（）A、It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.B、The switch assigns a CoS value of 5 to incoming packets.C、If a Cisco IP phone is attached and removed， the switch continues to trust the CoS values as long as the switch is not rebooted.D、It turns on STP to see if a Cisco IP phone is attached.E、If a Cisco IP phone is attached， the switch trusts the CoS.F、None of the other alternatives apply.
You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）A、IP phones require inline power and must be in separate VLAN to receive inline powerB、IP telephony applications require prioritization over other traffic as they are more delaysensitiveC、IP phones can only receive IP addresses through DHCP if they are in separate VLAND、The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan
关于Voice VLAN的工作模式，说法正确的有（）。A、Voice VLAN的工作模式包含自动和手动两种B、自动模式下，系统会识别IP Phone发出的报文，如果匹配为语音报文，则将连接IP Phone的端口加入Voice VLANC、手动模式下，需要手工将IP Phone加入Voice VLAN中D、手动模式下，系统将不会向端口下发ACL
下列关于IP电话业务说法正确的有：（）A、泛指通过IP网络提供或通过电话网络和IP网络共同提供的电话业务；B、特指由电话网络和IP网络共同提供的Phone-Phone以及PC-Phone的电话业务；C、IP电话有本地IP电话业务、国内长途IP电话业务和国际长途IP电话业务；D、IP电话业务在整个信息传递过程中，中间传输段采用IP包方式；E、IP电话通话清晰度与传统的固话无差距。
Which keypad sequence will reset the Cisco Unified Wireless IP Phone 7921 to factory default?（）A、***B、**#C、**1D、**2
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
Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）A、 device PoE requirementsB、 device IP addressC、 device voice VLAN IDD、 device platform
Which two are valid agent interfaces for Cisco Unified Contact Center Express?（）A、Macintosh workstation with Cisco IP Phone Agent B、Linux workstation running CAD with IP Communicator C、Linux workstation running CAD with Cisco Unified IP Phone 7960G D、Citrix Terminal running CAD with IP Communicator E、Citrix Terminal with Cisco IP Phone Agent F、Windows workstation running CAD with Media Termination option
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.
单选题Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）A device PoE requirementsB device IP addressC device voice VLAN IDD device platform
多选题Which two are valid agent interfaces for Cisco Unified Contact Center Express?（）AMacintosh workstation with Cisco IP Phone AgentBLinux workstation running CAD with IP CommunicatorCLinux workstation running CAD with Cisco Unified IP Phone 7960GDCitrix Terminal running CAD with IP CommunicatorECitrix Terminal with Cisco IP Phone AgentFWindows workstation running CAD with Media Termination option
单选题Refer to the exhibit. What is the effect on the trust boundary of configuring the command mls qos trust cos on the switch port that is connected to the IP phone？（）A Effectively the trust boundary has been moved to the IP phone.B The host is now establishing the CoS value and has effectively become the trust boundary. C The switch is rewriting packets it receives from the IP phone and determining the CoS value. D The switch will no longer tag incoming voice packets and will trust the distribution layer switch to set theCoSE RTP will be used to negotiate a CoS value based upon bandwidth utilization on the link.
单选题Which statement is true about a distributed call control environment and the processing of dialed digits from an IP phone？（）AThe router that is directly connected to the IP phone will look up the called number in its call routing table.BThe router that is directly connected to the IP phone will inform its call agent when a service request is detected.CWhen the IP phone is picked up，the IP phone initiates the service request.DThe directly connected router passes the collected digits to its call agent，and the call agent looks up in its call-routing table the called number.
单选题以下哪项是目前我国面向普通公众用户合法运营的IP电话业务形式？（）APC到PC方式BPC到PHONE方式CPhone到Phone方式DPHONE到PC方式