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2021 Apr 300-075 real exam
Q51. Which technologies provide remote-site redundancy for Cisco IP Phones during a WAN failure?
A. SRST and MGCP fallback
B. SRST and TEHO
C. TEHO and MGCP fallback
D. SRST and AAR
Q52. Which command is needed to utilize local dial peers on an MGCP-controlled ISR during an SRST failover?
A. ccm-manager fallback-mgcp
D. isdn overlap-receiving
Q53. When you configure QoS on VCS, which settings do you apply if traffic through the VCS should be tagged with DSCP AF41?
A. Set QoS mode to DiffServ and tag value 32.
B. Set QoS mode to IntServ and tag value to 34.
C. Set QoS mode to DiffServ and tag value 34.
D. Set QoS mode to IntServ and tag value to 32.
E. Set QoS mode to ToS and tag value to 32.
Q54. Which two statements about the functionality of a gatekeeper are true? (Choose two.)
A. Cisco Unified Communications Manager has gatekeeper functionality built in.
B. Cisco Unified Communications Manager registers with a gatekeeper via SIP.
C. Cisco Unified Communications Manager registers with a gatekeeper via H.323.
D. A gatekeeper can enable CAC and AAR.
E. A gatekeeper can enable CAC, but not AAR.
Q55. What component acts as a user agent for both ends of a SIP call while Cisco Unified SIP SRST is providing failover during a WAN outage?
B. SIP server
C. SIP proxy
D. SIP SRST router
E. SIP registrar
Improved 300-075 free question:
Q56. Which two entities could be represented by device mobility groups? (Choose two.)
C. directory numbers
Q57. Which three items must you configure to enable SAF Call Control Discovery? (Choose three.)
A. the SIP or H.323 trunk
B. hosted DN groups
C. hosted DN patterns
D. route patterns
E. a calling search space
F. translation patterns
Q58. You are the Cisco Unified Communications Manager in Certpaper.com. You use a remote site MGCP gateway to provide redundancy when connectivity to the central Cisco Unified Communications Manager cluster is lost. How to enable IP phones to establish calls to the PSTN when they have registered with the gateway? (Choose three.)
A. POTS dial peers must be added to the gateway to route calls from the IP phones to the PSTN.
B. The default service must be enabled globally.
C. The command ccm-manager mgcp-fallback must be configured.
D. COR needs to be configured to disallow outbound calls.
Incorrect Answer: D Class of restriction: Cisco Unified Communications Manager Business Edition 3000 supports class of service (CoS) with respect to geographic reach as follows:
– Emergency services
. Call waiting
. Default ringtones
. Speed dials: Single-button, not BLF
Q59. Which of the following are two functions that ensure that the telephony capabilities stay operational in the remote location Cisco Unified SRST router? (Choose two)
A. Automatically detecting a failure in the network.
B. Initiating a process to provide call-processing backup redundancy.
C. Notifying the administrator of an issue for manual intervention.
D. Proactively repairing issues in the voice network.
Q60. Which statement about enrollment in the IP telephony PKI is true? (Source. Understanding Cisco IP Telephony Authentication and Encryption Fundamentals)
A. CAPF enrollment supports the use of authentication strings.
B. The CAPF itself has to enroll with the Cisco CTL client.
C. LSCs are issued by the Cisco CTL client or by the CAPF.
D. MICs are issued by the CAPF itself or by an external CA.
Incorrect Answer: B, C, D
The CAPF enrollment process is as follows:
1. The IP phone generates its public and private key pairs.
2. The IP phone downloads the certicate of the CAPF and uses it to establish a TLS session with the CAPF.
3. The IP phone enrolls with the CAPF, sending its identity, its public key, and an optional authentication string.
4. The CAPF issues a certicate for the IP phone signed with its private key.
5. The CAPF sends the signed certicate to the IP phone.