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Cisco 642-457 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Bandwidth Management & Call Admission Control | 20% | - Regions and locations configuration - Gatekeeper-based CAC - Automated Alternate Routing (AAR) - RSVP agents and SIP precondition - Media resources: MTP, transcoders, conferencing, MOH |
| Topic 2: Multisite CUCM Infrastructure & Trunks | 20% | - Configure intercluster trunks and call control discovery - Multisite architecture and connectivity options - Implement H.323, MGCP, and SIP gateways - SAF Forwarder and SAF CCD implementation |
| Topic 3: Mobility Features | 15% | - Device Mobility configuration - Extension Mobility implementation - Mobility features verification |
| Topic 4: Call Survivability & Redundancy | 20% | - Failover and fallback verification - SRST and CUCM Express survivability - MGCP fallback configuration - Centralized call processing redundancy |
| Topic 5: Multisite Dial Plan Implementation | 25% | - Partition, CSS, and numbering plan design - Globalized call routing and E.164 dialing - Local Route Groups and global transformations - Tail-End Hop-Off (TEHO) and PSTN backup |
Cisco Implementing Cisco Unified Communications Manager, Part 2 v8.0 (CIPT2 v8.0) Sample Questions:
Question 1
Refer to the exhibit.
The HQ site uses area code 650. The BR1 site uses area code 408. The long distance national code for PSTN dialing is 1. To make a long distance national call, an HQ or BR1 user dials access code 9, followed by 1, and then the 10-digit number. Both sites use MGCP gateways. AAR must use globalized call routing using a single route pattern. Assume that all outgoing PSTN numbers are localized at the egress gateway as shown in the exhibit.
What should the AAR group prefix be?
A. none
B. +1
C. 9
D. +
E. 91
Question 2
When an H.323 trunk is added for Call Control Discovery, which statement is true?
A. The H.323 trunk is added by selecting Call Control Discovery Trunk and then selecting
B. The H.323 trunk is added by selecting Inter-Cluster Trunk (Non-Gatekeeper Controlled) and Device Protocol Inter-Cluster Trunk. The Trunk Service Type should be Call Control Discovery.
C. 323 as the protocol to be used.
D. The H.323 trunk is added by selecting H.323 Trunk, and selecting Inter-Cluster Trunk as the Device Protocol. The destination IP address field is configured as 'SAF' to indicate that this trunk is used for SAF.
E. The H.323 trunk is added by selecting Inter-Cluster Trunk (Non-Gatekeeper Controlled) and Device Protocol Inter-Cluster Trunk. The Enable SAF check box should be selected in the trunk configuration.
Question 3
Refer to the exhibit.
Which configuration change is needed to enable NANP international dialing during MGCP fallback?
A. Add the command prefix 011 to the dial peer.
B. Change the dial peer to dial-peer voice 901 voip.
C. Add the command prefix 9011 to the dial peer.
D. Change the dial peer to dial-peer voice 9011 pots.
Question 4
Which action configures PSTN backup for calls that are rejected by the gatekeeper CAC?
A. Configure AAR in Cisco Unified Communications Manager.
B. Configure a route pattern, a route list, and route groups to a trunk and a gateway in Cisco Unified Communications Manager.
C. Configure CFUR in Cisco Unified Communications Manager.
D. Configure a route pattern to a gateway in Cisco Unified Communications Manager.
Question 5
Which option describes a function of SIP preconditions?
A. SIP preconditions enable RSVP between Cisco IP Phones.
B. SIP preconditions enable end-to-end RSVP over an SIP trunk.
C. SIP preconditions can be enabled in a gatekeeper.
D. SIP preconditions enable end-to-end RSVP for calls through the PSTN.
Solutions:
| Question 1 Answer: A | Question 2 Answer: E | Question 3 Answer: A | Question 4 Answer: B | Question 5 Answer: B |






