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发表于 2011-02-15 18:38 |只看该作者 |倒序浏览

最新642-445考題分享1. Which two gateway configuration statements are required, at a minimum, in order to enable Cisco Unified CallManager to control a T1 PRI in an MGCP gateway? (Choose two.)A. mgcpB. ccm-manager configC. pri-group configuration on the controllerD. mgcp call-agent pointing to tftp serverE. isdn l3-backhaul ccm-manager on the serial interfaceF. config-server address pointing to tftp serverAnswer: BF2. Which of these is the best practice to employ when using certificates between a browser and the Cisco Unified CallManager 5.0 server?A. Accept the certificate when the security alert pop-up window appears.B. Use SSH exclusively to verify the thumbprint of the certificate and then send the certificate to all web browser users that require access to the server.C. Use either SSH or CLI to view the thumbprint of the certificate and then communicate the information to all web browser users so they already have it available when they receive the security alert.D. Note the thumbprint of the Cisco Unified CallManager certificates after installation and thencommunicate the information to all web browser users so they have it available when they receive the security alert.E. Install thumbprint readers on the devices that need to connect to the Cisco Unified CallManager servers via HTTPS.Answer: D3. Which two Cisco Unified CallManager tasks are required to route calls from Cisco Unified CallManager to the PSTN via an H.323 gateway? (Choose two.)A. add a gatekeeper from the Device menuB. add an H.323 gateway from the Device menuC. configure the voice endpoints in Cisco Unified CallManagerD. configure the signaling protocol used on the voice circuitE. add PSTN route patterns pointing to the gatewayF. configure the IP phones with an external phone number maskAnswer: BE4. Which of the following actions will prevent devices from being able to initiate conferences?A. Exclude the conference media resource partitions from the CSS.B. Exclude the conference media resources from all MRGs.C. Place all conference media resources in MRGs and exclude these MRGs from the MRGL.D. Remove the default MRGL from the device pool.Answer: C5. You have configured SRST at a remote site on an MGCP gateway. During testing, you find that IP phones are not registering with the SRST router when the IP WAN fails. Which three potential problems need to be investigated? (Choose three.)A. No dial-peers have been added to the SRST router.B. No SRST reference address is included in the device pool.C. The proper service command has not been added to the SRST router.D. The max-ephones command is missing in the SRST router.E. The max-dn command is missing in the SRST router.F. The ccm-manager fallback-mgcp command is missing in the SRST router.Answer: BDE6. Which three can be assigned a partition? (Choose three.)A. directory numberB. IP phoneC. gatewayD. route patternE. translation patternF. gatekeeperAnswer: ADE7. Which three steps must be completed in order to assign a service URL to an IP Phone button? (Choose three.)A. Add an IP phone service.B. Assign the IP phone service partition to the CSS of the phone.C. Create a phone button template that includes a service URL and assign it to the phone.D. Create a softkey template that includes a service URL and assign it to the phone.E. Subscribe the phone to the service.F. Associate a valid user profile with the phone.Answer: ACE8. Which of these best describes the function of transformations?A. allow the call-routing component to modify the calling or called numberB. identify and define the tags and operatives used in route filtersC. configure and revise discard digitsD. redirect callsAnswer: A9. Which two qualities of PKI key exchange overcome asymmetric cryptography scalability issues? (Choose two.)A. the trusted introducer uses the signed certificates of the endpoints that need to communicateB. PKI uses only a single trusted introducerC. the trusted introducer uses the private key of each enrolling user and the public key of the introducer asthe signed certificateD. only the public key of the introducer has to be initially known and verified by all other entitiesE. the introducer digitally signs the public key of the user with the public key of the introducer to generate a signed certificateAnswer: BD10. The Acme Lumber Company would like to use AAR to reroute calls made from HQ to remote locationswhen those calls are rejected by the IP WAN because of insufficient bandwidth. The Acme Lumber Company uses 5-digit dialing to all locations. Acme Headquarters has a DID range from 770-555-0001 to 770-557-0500 and the Macon facility has a DID range from 912-556-0500 to 912-556-0550.How should the external phone masks be configured?A. 770555XXXXB. 770557XXXXC. 77055XXXXXD. 9125560XXXE. 912556XXXXAnswer: C

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