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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Collaboration Applications | 5% | - Configure Cisco Unity Connection (MWI, SIP integration) - Configure Cisco Jabber (Switching modes, Deployment modes) |
| Topic 2: Protocols, Codecs, and Endpoints | 20% | - Troubleshoot these elements of a SIP conversation (SDP, Offer/Answer model, DTMF, Early media) - Configure and troubleshoot endpoint registration (On-premises, CUCM, Expressway) - Describe SIP interworking between CUCM and Cisco Expressway - Identify the appropriate codec for a given scenario (G.711, G.729, Opus) |
| Topic 3: Quality of Service (QoS) | 15% | - Describe the QoS requirements for these applications (Voice, Video, Data) - Configure LLQ (class map, policy map, service policy) - Describe problems that can lead to poor voice and video quality (Jitter, Latency, Packet loss) - Describe the class models for providing QoS (DiffServ, IntServ) |
| Topic 4: Cisco IOS XE Gateway and Media Resources | 15% | - Troubleshoot IOS XE dial plans and dial peer matching - Describe IOS XE media resources (Conferencing, MOH, Transcoding) - Configure voice gateway elements (DTMF, Voice translation rules, Codec preference lists, VoIP and POTS dial peers) |
| Topic 5: Infrastructure and Design | 20% | - Describe the key design elements of the following: Sizing, Bandwidth, High availability, Disaster recovery, Dial plan, Security (certificates, SRTP, TLS) - Troubleshoot network components in a Cisco collaboration solution (DNS, NTP, CDP/LLDP, IP connectivity, Firewall traversal) - Describe the purpose of Edge devices in the Cisco Collaboration architecture (Expressway, CUBE) |
| Topic 6: Call Control | 25% | - Implement toll fraud prevention on CUCM - Describe the Cisco Unified Communications Manager (CUCM) digit analysis process - Configure globalized call routing in CUCM (Route patterns, Translation patterns, Standard Local Route Group) - Describe Mobile and Remote Access (MRA) |
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NEW QUESTION # 484
Using a single video queue for QoS, what is the recommended DSCP value for Jabber video endpoints?
Answer: A
Explanation:
When configuring QoS (Quality of Service) for video traffic, the recommended DSCP (Differentiated Services Code Point) value for video endpoints, including Cisco Jabber video, is AF42. This value is specifically designed for video conferencing traffic and aligns with the QoS guidelines for prioritizing video in enterprise networks.
NEW QUESTION # 485 
Refer to the exhibit. An engineer configures a VoIP dial peer on a Cisco gateway. Which codec is used?
Answer: C
Explanation:
Section: Cisco IOS XE Gateway and Media Resources
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/dialpeer/configuration/15-mt/vd-15-mt- book/vd-dp-cfg-examp.pdf
NEW QUESTION # 486
Which dial plan design provides the most benefit to systems with many sites or overlapping site extension ranges?
Answer: B
Explanation:
In systems with multiple sites or overlapping extension ranges, a variable-length dial plan offers significant advantages. This design allows for flexibility in dialing patterns, accommodating different extension lengths across various locations. By implementing variable-length dialing, organizations can effectively manage overlapping extensions and streamline internal communication.
NEW QUESTION # 487
Refer to the exhibit. This INVITE is sent to an endpoint that only supports G.729.
What must be done for this call to succeed?
Answer: C
Explanation:
A transcoder takes the media stream of one codec and transcodes (converts) it from one compression type to another compression type. For example, it could take a stream from a G.711 codec and transcode (convert) it in real time to a G.729 stream. In addition to codec conversion, a transcoder resource can also provide MTP/TRP functionality to a call.
NEW QUESTION # 488
What happens to voice packets from a Cisco 8845 IP phone in the QoS trust boundary?
Answer: C
NEW QUESTION # 489
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