642-445 - Cisco IP Telephony for Release 5.x
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Which two qualities of PKI key exchange overcome asymmetric cryptography scalability issues? (Choose two.)
PKI uses only a single trusted introducer
only the public key of the introducer has to be initially known and verified by all other entities
Acme Lumber Company phones are configured to use AAR to reroute a call when the call is rejected due to insufficient IP WAN bandwidth. Which AAR configuration parameter will prevent a call originating at a lobby phone from using AAR when CAC rejects the call due to insufficient bandwidth?
changing the AAR Calling Search Space in the IP phone line settings
What is the purpose of route filters?
to reduce the number of route patterns added to the route plan
If a SIP phone has neither KPML nor a set of dial rules configured, how are digits sent to the Cisco Unified CallManager for further processing?
the user must press the "Dial" softkey
Which of these is the best practice to employ when using certificates between a browser and the Cisco Unified CallManager 5.0 server?
Note the thumbprint of the Cisco Unified CallManager certificates after installation and then communicate the information to all web browser users so they have it available when they receive the security alert.
What happens by default if the Log Partition Monitor's high-water mark is exceeded?
An alarm message is sent to the syslog, an alert is generated in RTMT Alert Central, and log files are purged until the low-water mark is reached.
Which of the following actions will prevent devices from being able to initiate conferences?
Place all conference media resources in MRGs and exclude these MRGs from the MRGL.
Which navigation window should you use to restart the server and view the version of the Cisco Unified CallManager 5.0 software?
Which new traffic type has been added between Cisco Unified CallManager 5.0 servers?
licensing message traffic
What is the purpose of using device pools?
to provide a convenient way to define a set of common characteristics that can be assigned to devices
What is the function of Cisco Unified CallManager Regions?
to specify the codec used for audio and video calls
Which of these best describes the function of transformations?
allow the call-routing component to modify the calling or called number
You need to delete and add a new device pool to your Cisco Unified CallManager cluster, but when you try to delete the existing device pool you receive an error message stating that the device pool is still in use. Which tool can you use to determine which devices are still using the device pool?
What is the relationship between a Region and a Location?
The codec parameter configured in the Region is only used between Regions and Location bandwidth is only used between Locations.
Which two options are functions of Cisco Unified CallManager RTMT? (Choose two.)
generates daily reports on system resources
monitors a preconfigured set of management objects
Which two features are advantages of deploying a cluster over an IP WAN? (Choose two.)
extension mobility within the cluster
shared line appearances
The Acme Corporation is experiencing poor, choppy audio quality on voice calls placed across their WAN link to and from Madison. What can be done to the Location parameter for Madison to help alleviate this problem?
Decrease the audio bandwidth setting in the Location configuration window for Madison.
What is the process used to restore an entire cluster in the event of a catastrophic failure?
Restore the first node by doing a fresh install, restore the first node database from DRS, and then restore the subsequent nodes from the DRS backup location.
What is the difference between a CMR and a CDR?
A CMR reports on call quality and CDR reports on call activities.
An auto parts retailer would like its six service counter representatives to be able to assist both walk-up customers and telephone customers. Each store has six service counter representatives. Which call distribution algorithm will allow each service counter representative to provide the best customer service?
How are Cisco Unified CallManager location parameters used?
Implement call admission control in a centralized call processing deployment.
The Acme Lumber Company would like to use AAR to reroute calls made from HQ to remote locations when 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?
Which dial rule pattern for Cisco 7905_7912 IP phones will allow the user to dial a 9 for local access, wait for a secondary dial tone, and then dial a seven digit number?
Which multiple line appearance parameter sets a number of calls per line beyond which all incoming calls will be forwarded?
How can the activation status of DNS services be changed?
DNS activation can only be changed by reinstalling Cisco Unified CallManager.
What two types of calls can cause the Cisco Unified CallManager to send an ARQ to a gatekeeper to determine if a call should be routed? (Choose two.)
calls routed over an intercluster trunk
calls routed to H.323 gateways
You have recently upgraded to a Cisco Unified CallManager 5.0 cluster. What will happen to users added after the upgrade if you roll back to the inactive partition?
User information will be lost and those users added after the upgrade will need to be reentered.
When a Cisco Unified CallManager group has its primary, secondary, and tertiary servers changed, how are those changes propagated to the IP phones registered to the group?
The IP phones will need to be reset so that a new configuration file can be downloaded from the TFTP server.
Which two options describe how the Cisco Unified CallManager Auto-Register Phone Tool updates auto-registering IP phones? (Choose two.)
A new phone can dial into the Cisco Unified CallManager Auto-Register Phone Tool DN to update its MAC address in Cisco Unified CallManager and download the correct configuration file.
A replacement phone can dial into the Cisco Unified CallManager Auto-Register Phone Tool DN to download the configuration for the phone it replaces.
Which two SIP issues should be considered when deploying KPML? (Choose two.)
There will be significantly more signaling traffic on the network.
There will be additional processing demands on the Cisco Unified CallManager server.
A range of Meet-Me conference numbers is reserved for manager use. Which method can be used to restrict non-managers from accessing these Meet-Me numbers without limiting their ability to initiate ad hoc conferences?
Place the Meet-Me numbers in a partition that is only assigned to the CSS for the managers' phones.
Which configuration parameter may need to be adjusted when the Region setting is changed?
What is the impact of setting an RSVP policy per location pair with a default interlocation RSVP service policy?
the default interlocation RSVP service policy will be overridden
What process does the Log Partition Monitor use to delete logs in excess of the high-water mark?
If any log files exist in the inactive partition, those files are deleted first, then the oldest files in the active partition are deleted until the low-water mark is reached.
A single route pattern has been added to the Cisco Unified CallManager to use the NANP. A route filter named Local_Only has been applied to limit calls to local and service numbers only. The Local_Only route filter includes the clause: (LOCAL-AREA-CODE EXISTS AND SERVICE EXISTS). After applying the Local_Only route filter, no calls to the PSTN can be completed. What needs to be done to correct this issue?
The route pattern needs to be added twice, once with a route filter for local calls and once with a route filter for services.
If a service is currently deactivated, how can the service be reactivated from the Cisco Unified CallManager Serviceability Control Center page?
by selecting Tools > Service Activation, selecting the correct server, and clicking on the radio button to the left of the service to activate it.
How many backup sessions can be active at one time in the Disaster Recovery System?
one, either automatic or manual
Which Cisco Unified CallManager RTMT component retrieves real-time information that exists on nodes in the cluster?
Alert Manager and Collector
Bob's Bicycles has three manufacturing plants and 145 retail stores. Each of the manufacturing plants has a Cisco Unified CallManager cluster. The retail stores use a mix of Cisco Unified CallManager Express and key systems with gateways. What is the recommended trunk type to use on the Cisco Unified CallManager clusters for full intersite calling capability?
gatekeeper-controlled H.225 trunks
The Acme Lumber Company uses a centralized call processing model to connect their saw mills in Albany and Columbus. Each mill is configured as a separate Location in Cisco Unified CallManager at HQ. Each Location has been configured with 256 Kbps of voice bandwidth. How many G.729 calls can be placed between Locations simultaneously?
Which portion of the master Administrator account can be changed after installing using the CLI?
Which two methods can be used to build a SIP trunk from the Cisco Unified CallManager to a SIP Registrar server and a backup Registrar server? (Choose two.)
Configure a DNS SRV record name as the destination address of the SIP trunk.
Configure one SIP trunk to point to the SIP Registrar server and a second SIP trunk to point to the backup Registrar server. Use route groups and a route list to allow calls to be routed to the backup Registrar if the primary does not respond.
An IP phone user has dialed "15152421234". Which route pattern will be used?
Under the Platform Administration GUI, if an NTP server isn't specified, what will the Cisco Unified CallManager cluster use for a time source?
The internal clock in the first node will become the clock source for the cluster.
How does the Cisco Unified CallManager use RSVP?
it uses an RSVP-enabled infrastructure and an RSVP agent controlled by Cisco Unified CallManager to request a bandwidth reservation from the network in order to place a call
What causes an IP phone to register with the SRST router when the IP WAN fails?
The IP phone loses keepalives from the Cisco Unified CallManager and reregisters with the SRST.
For phone hardening tasks, which two statements are accurate? (Choose two.)
Disabling PC voice VLAN access will cause packets received from the PC port that uses the voice VLAN tag to drop.
Disabling settings access prohibits access to all the options that are normally displayed when the Settings button on the phone is pressed.
What are the minimum configuration parameters required to manually add an IP phone to Cisco Unified CallManager 5.0?
MAC address, device pool, phone security profile, and phone button template
You need to configure a new IOS-based Catalyst switch to support voice and data VLANs. The data VLAN will be VLAN 10 and the voice VLAN will be VLAN 100. Which of the following configurations should be used to support these VLANs while also allowing switch port 0/1 to enter the forwarding state immediately?
Closet 2 (config)# interface FastEthernet 0/1 Closet 2 (config-if)# switchport mode access Closet 2 (config-if)# switchport access vlan 10 Closet 2 (config-if)# switchport voice vlan 100 Closet 2 (config-if)# spanning-tree portfast
Within MLA, what is the relationship between applications, privileges, and roles?
Application resources are assigned to roles, and privileges are assigned to applications.