Protocols And Endpoints

A Webex Desk Pro is failing to provision via the Cisco Webex Control Hub. The device displays 'Provisioning Error'. Which configuration component is primarily responsible for holding the authentication credentials required for the device to pull its configuration?

An endpoint sends a SIP REGISTER request. CUCM returns a 401 Unauthorized response. What is the next logical step in the SIP signaling flow for the endpoint?

When configuring an IP phone for automatic provisioning, which DHCP option is most commonly used to provide the TFTP server address to the phone?

An endpoint using the Opus codec is experiencing one-way audio. The SDP exchange indicates that the endpoint is offering a wideband range. Where in CUCM would you modify the Region settings to force the use of a specific codec for this endpoint?

A Cisco IP Phone 8841 is failing to register to Cisco Unified Communications Manager. You check the phone settings and see the TFTP server address is correct. Which protocol and port should you monitor on the gateway or firewall to verify the initial registration attempt?

You are troubleshooting a scenario where G.711 is being used instead of the expected Opus codec between two endpoints in the same region. What is the most likely cause in the CUCM configuration?

You need to verify that an endpoint is correctly sending RTCP reports to Cisco Unified Communications Manager. Which field in the RTCP packet header would you examine to track the jitter statistics?

Which protocol is primarily used for the transmission of real-time voice and video data between two endpoints?

You are monitoring RTP traffic using a protocol analyzer. You observe that the Payload Type field in the RTP header is set to 0. Which codec is currently in use?

You are troubleshooting intermittent audio quality. You notice that RTCP packets are arriving with high variance. What does this indicate?

Which component in the Cisco Collaboration architecture provides the initial configuration files (XML) to an IP phone upon registration?

You need to support Opus codec on a Cisco IP Phone 8865. Which configuration object must be updated to allow this codec?

When a SIP phone initiates a call, which message does the CUCM send to acknowledge the initial INVITE?

You have a requirement to use secure signaling for SIP endpoints. Which protocol and port combination must be used in the SIP Security Profile?

Which field in the SIP INVITE SDP body specifies the media attributes such as codec type?

An IP phone is stuck in a boot loop. You suspect a corrupted firmware image. Which process would you initiate to force the phone to download a new image?

Which protocol provides the signaling for Webex Room devices when they are registered to CUCM (on-premises)?

Which TWO protocols are used for managing the quality and monitoring of VoIP sessions?

Which THREE codecs are natively supported by the Cisco IP Phone 8800 series?

To ensure that G.729 is used for all inter-site calls but G.711 is used for intra-site calls, what specific CUCM construct must you define?

You are troubleshooting a registration issue where the phone sends a REGISTER request, but the server does not respond. What is the most likely issue?

Which TWO tasks must be performed when moving a phone from one CUCM cluster to another?

Which THREE methods are used by Cisco IP phones to obtain their configuration files?

Which THREE items are included in a standard SIP REGISTER request?

Which TWO features are provided by the Cisco Webex App when registered as a Softphone?

Which THREE network conditions contribute to poor VoIP call quality in an RTP stream?

Which TWO factors significantly impact the choice of audio codec during a call setup in CUCM?