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400-051 Exam Questions - Online Test


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Q1. Which two Device Pool configuration settings will override the device-level settings when a device is roaming within or outside a device mobility group? (Choose two.) 

A. Adjunct CSS 

B. Device Mobility CSS 

C. Network Locale 

D. Called Party Transformation CSS 

E. AAR CSS 

F. Device Mobility Group 

Answer: CF 

Q2. Refer to the exhibit. 

Assume the B-ACD configuration on a Cisco IOS Cisco Unified Communications Manager Express router is operational. What will happen to a call in queue that was not answered by any member of the hunt group after the maximum amount of time allowed in the call queue expires? 

A. The call will be forwarded to extension 2120. 

B. The call will be forwarded to extension 2220. 

C. The call will be forwarded to extension 2003. 

D. The call will be disconnected with user busy. 

E. The call will be forwarded to 2100. 

Answer:

Q3. To which Cisco enterprise medianet application class does Cisco TelePresence belong? 

A. VoIP Telephony 

B. Real-time Interactive 

C. Multimedia Conferencing 

D. Broadcast Video 

E. Low Latency Data 

Answer:

Q4. Refer to the exhibit. 

The exhibit shows the Cisco IOS CLI output of debug ip dhcp packet, which was captured on a router that is located at a branch office where a single IP phone is located. There is a standalone Cisco Unified Communications Manager server at the central site, which also provides DHCP services to the IP phone at the branch office. You are troubleshooting a problem where the IP phone could not register to Cisco Unified Communications Manager. You have confirmed that the IP phone received an IP address in the correct subnet and with a correct subnet mask from the DHCP server. Assuming the IP phone is correctly defined on Unified CM, which two statements about the network components are true? (Choose two.) 

A. The MAC address of the IP phone is 01ec44761e3e. 

B. The IP address of the DHCP server is 10.101.15.1. 

C. The MAC address of the VLAN 101 interface is ec44761e3e7d. 

D. The IP address of the VLAN 101 interface is 10.101.15.1. 

E. There is IP connectivity between the VLAN 101 interface of the branch router and the ip-helper address that is configured on this interface. 

F. There is IP connectivity between the IP phone and the ip-helper address on the VLAN 101 interface. 

Answer: DE 

Q5. Which statement describes DTMF processing on Cisco Unified Contact Center Express with supported SIP-based agent IP phones that are registered to Cisco Unified Communications Manager? 

A. Cisco Unified CCX receives the DTMF digits via SIP NOTIFY messages. 

B. Cisco Unified CCX receives the DTMF digits in the RTP payload based on RFC 2833. 

C. Cisco Unified CCX receives the DTMF digits via JTAPI messages. 

D. Cisco Unified CCX receives the DTMF digits via SIP INFO messages. 

E. Cisco Unified CCX receives the DTMF digits as part of the audio encoding in the RTP stream. 

Answer:

Q6. Refer to the exhibit. 

IP phone 1 has MAC address of 1111.1111.1111, and IP phone 2 has MAC address of 2222.2222.2222. The first two incoming calls were answered by IP phone 1, and the third incoming call was answered by IP phone 2. 

Which option describes what will happen to the fourth incoming call? 

A. Both phones ring, but only IP phone 2 can answer the call. 

B. Both phones ring and either phone can answer the call. 

C. Both phones ring, but only IP phone 1 can answer the call. 

D. Neither phone rings and the call is forwarded to 2100. 

E. Neither phone rings and the call is forwarded to 2200. 

Answer:

Q7. Which option is a characteristic of the Enhanced Location Call Admission Control mechanism on Cisco Unified Communications Manager? 

A. It accounts for network protocol rerouting. 

B. It accounts for network downtime and failures. 

C. It supports dynamic bandwidth adjustments based on WAN topology changes. 

D. It supports asymmetric media flows such that different bit rates in each direction are deducted accordingly. 

E. Unidirectional media flows are deducted as if they were bidirectional. 

Answer:

Q8. Which two responses are examples of client error responses in SIP protocol? (Choose two.) 

A. 302 Moved Temporarily 

B. 404 Not Found 

C. 503 Service Unavailable 

D. 502 Bad Gateway 

E. 604 Does Not Exist Anywhere 

F. 408 Request Timeout 

Answer: BF 

Q9. Which statement describes the Cisco best practice recommendation about priority queue bandwidth allocation in relationship to the total link bandwidth when multiple strict priority LLQs are configured on the same router interface? 

A. Each LLQ should be limited to one-third of the link bandwidth capacity. 

B. The sum of all LLQs should be limited to two-thirds of the link bandwidth capacity. 

C. The sum of all LLQs should be limited to one-half of the link bandwidth capacity. 

D. The sum of all LLQs should be limited to one-third of the link bandwidth capacity. 

E. Cisco does not recommend more than one strict priority LLQ per interface. 

Answer:

Q10. Which two SCCP call signaling messages are sent by an IP phone to Cisco Unified Communications Manager? (Choose two.) 

A. SoftKeyEvent 

B. OpenReceiveChannelAck 

C. StartMediaTransmission 

D. SelectSoftKeys 

E. CloseReceiveChannel 

F. StopTone 

Answer: AB