CCNA Infrastructure And Design Questions

Which TWO of the following are valid methods for providing high availability for IP phones in a CUCM design?

A collaboration designer must ensure that inter-cluster calls between two CUCM clusters remain secure. Which mechanism must be implemented to ensure media remains encrypted from end to end?

Which network condition is the most significant contributor to poor voice quality in a VoIP environment?

In the context of collaboration design, what is the purpose of the 'Location' in CUCM?

When designing for high availability of Cisco Unified Communications Manager (CUCM) services, which specific configuration ensures that a secondary node takes over call processing if the primary node fails?

You are implementing Quality of Service (QoS) for a Cisco IP Phone. Which mechanism ensures that the phone's traffic is tagged correctly even if the user connects a PC to the phone's auxiliary port?

You have a CUCM cluster with high utilization. Which parameter, when adjusted, helps mitigate the load on the TFTP service during a large-scale phone deployment?

Which design principle must be followed when implementing a centralized call processing deployment with remote branch offices connected via a WAN?

When designing a secure collaboration network, what is the best practice for handling certificates in a CUCM and Expressway cluster?

You are designing a Call Admission Control (CAC) policy for a site with limited bandwidth. Which feature should you use to prevent over-subscription of the WAN link?

You are designing a high-availability solution for Cisco Expressway. Which element is required to load-balance traffic between multiple Expressway nodes?

You are designing a network for video collaboration. What is the recommended maximum one-way latency for high-quality video conferencing?

When deploying Cisco IP phones, what is the best practice for VLAN configuration?

What is the primary function of the CUBE in a SIP trunking scenario?

Which THREE of the following are necessary to ensure successful NTP deployment in a CUCM cluster?

Which TWO of the following are essential components of a Cisco network readiness assessment for collaboration?

When designing an NTP deployment for a Cisco Collaboration environment, what is the best practice for time synchronization across CUCM nodes?

You are troubleshooting a registration failure for a remote IP phone. The phone is configured to use an Expressway-E for MRA. Which DNS record is queried by the client to find the Expressway-E cluster?

Which component in a Cisco Collaboration design is responsible for providing the dial tone and call routing logic for IP phones?

Which THREE of the following are required DNS records for a successful Cisco MRA (Mobile and Remote Access) deployment?

Which service must be running for a Cisco IP Phone to download its configuration file via TFTP?

When designing for emergency services (E911) in a multisite deployment, what is the best practice for ensuring calls are routed to the correct Public Safety Answering Point (PSAP)?

In a multisite WAN deployment, which codec should you choose to balance voice quality and bandwidth consumption across a constrained link?

A network engineer is deploying Cisco Unified Border Element (CUBE) and must ensure that voice traffic is prioritized correctly across the enterprise network. Which command correctly maps the voice traffic DSCP value to the correct priority queue in a Cisco IOS-XE router?

Which THREE of the following are recommended steps when designing a secure signaling path between CUCM and a CUBE gateway?

You are managing a Cisco Collaboration cluster and notice that database replication is stuck in a '3' (blocked) state. What is the standard troubleshooting step?

You are deploying a Cisco Expressway-E in a DMZ. Which port must be opened on the external firewall to allow for H.460.18/19 firewall traversal for H.323 endpoints?

In a Cisco collaboration design, you are tasked with identifying the DHCP Option required for Cisco IP Phones to discover the TFTP server address automatically. Which option is standard for this purpose?

You are designing a solution for a Cisco IP Phone that does not receive an IP address. Which DHCP feature must be enabled on the access switch to forward requests to the DHCP server?

Which TWO of the following are common reasons for database replication failure in a CUCM cluster?

Which THREE of the following items must be verified during a site-to-site VPN check for collaboration traffic?

You are designing a solution for secure voice signaling. Which protocol provides encryption for SIP signaling messages in a CUCM environment?

You are configuring DNS SRV records to support Jabber service discovery. Which domain format is correct for the _collab-edge._tls record?

Which log file is most useful for troubleshooting registration issues between an IP phone and CUCM?

When designing a Cisco Jabber deployment using MRA, which internal service is responsible for providing the configuration file and server list to the client?

You are verifying the network readiness for a Cisco TelePresence endpoint. Which tool would you use to measure the packet loss, latency, and jitter on the path to the CUCM cluster?

Which protocol is primarily used by Cisco endpoints for music-on-hold (MoH) streaming from a Media Resource Group?

Which Cisco feature is used to ensure voice traffic is prioritized over web traffic on a Cisco access switch?

In a Cisco CUCM cluster, which node is responsible for managing the database and performing configuration updates?