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Cisco 642-457 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Multisite CUCM Infrastructure & Trunks20%- Multisite architecture and connectivity options
- Configure intercluster trunks and call control discovery
- Implement H.323, MGCP, and SIP gateways
- SAF Forwarder and SAF CCD implementation
Topic 2: Call Survivability & Redundancy20%- Failover and fallback verification
- SRST and CUCM Express survivability
- Centralized call processing redundancy
- MGCP fallback configuration
Topic 3: Multisite Dial Plan Implementation25%- Partition, CSS, and numbering plan design
- Tail-End Hop-Off (TEHO) and PSTN backup
- Local Route Groups and global transformations
- Globalized call routing and E.164 dialing
Topic 4: Bandwidth Management & Call Admission Control20%- RSVP agents and SIP precondition
- Media resources: MTP, transcoders, conferencing, MOH
- Automated Alternate Routing (AAR)
- Gatekeeper-based CAC
- Regions and locations configuration
Topic 5: Mobility Features15%- Extension Mobility implementation
- Mobility features verification
- Device Mobility configuration

Cisco Implementing Cisco Unified Communications Manager, Part 2 v8.0 (CIPT2 v8.0) Sample Questions:

1. Refer to the exhibit.

The exhibit shows centralized Cisco Unified Communications Manager configuration components for TEHO calls to U.S. area code 408 from the U.K. The PSTN access code for the U.K. is 9 and 001 for international calls to the U.S. What should the TEHO-US route list configuration consist of?

A) First route group should be only the local route group. The second route group should point to the U.S. gateway.
B) First route group should point only to the U.K. gateway. The second route group should point to the U.S. gateway.
C) The \+! route pattern should point directly to the U.S. gateway.
D) The TEHO-US route list should contain only the local route group. The globalized configuration means that the appropriate gateway will be selected automatically.
E) First route group should point only to the U.S. gateway. The second route group should be the local route group.


2. Refer to the exhibit.


Which pattern is advertised by the Cisco Unified Communications Manager?

A) +4420! And the ToDID will be +4420!
B) +4420! And the ToDID will be 0:
C) +4420! And the ToDID will be 0:+4420!
D) +4420!


3. Enabling authentication and encryption for CTI, JTAPI, and TAPI applications requires which two tasks? (Choose two.) (SourcE. Configuring Cisco IP Telephony Authentication and Encryption)

A) Add the application user or end users to the Standard CTI Secure Connection user group, Standard CTI Allow Reception of SRTP Key Material user group, and Standard CTI Enabled user group.
B) Set up an IPsec association between the application and Cisco Unified CallManager.
C) Configure related security parameters in the CTI, JTAPI, and TAPI application.
D) Enter the encryption key into the application.


4. Which option is a benefit of implementing CFUR?

A) CFUR can reroute calls placed to a temporarily unregistered destination phone.
B) CFUR is designed to initiate TEHO to reduce toll charges.
C) CFUR can prevent phones from unregistering.
D) CFUR eliminates the need for COR on an ISR.


5. When an external call is placed from Ajax, they would like the ANI that is sent to the PSTN to be the main number, not the extension. For domestic calls, they would like 10 digits sent; for international calls, they would like to send the country code 1 and the 10 digits. How can this be accomplished?

A) Use a calling party transform mask for each route group in the corresponding route list configuration. Set the explicit 10-digit main number for domestic calls and 1 followed by the main number for the international route patterns.
B) In the directory number configurations, set the prefix digits field to the country code and the 10 digits of the main number. This will be truncated to the 10-digit number for domestic calls and sent out in its entirety for international calls.
C) In the external call route patterns, set the external phone number mask to the main number. Use 10 digits in the domestic route pattern and 1 followed by the main number digits in the international route patterns.
D) Add a translation pattern to the dial peers in the gateway that adds the appropriate digits to the outgoing ANI.


Solutions:

Question # 1
Answer: E
Question # 2
Answer: C
Question # 3
Answer: A,C
Question # 4
Answer: A
Question # 5
Answer: A

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