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2021 Mar 400-051 test question
Q91. Assume 18 bytes for the Layer 2 header and a 10-millisecond voice payload, how much bandwidth should be allocated to the strict priority queue for three VoIP calls that use a G.722 codec over an Ethernet network?
A. 331.2 kb/s
B. 347.8 kb/s
C. 261.6 kb/s
D. 274.7 kb/s
E. 238.4 kb/s
Answer: A
Q92. How many destinations can be configured for a SIP trunk on a Cisco Unified Communications Manager 9.1 system when the destination address is an SRV?
A. 1
B. 2
C. 3
D. 8
E. 16
Answer: A
Q93. Which element was added to H.225 messages to enable Fast Connect in H.323 version 2?
A. fastStart
B. fastConnect
C. H.245 PDU
D. User-User Information
E. Connection Information
Answer: A
Q94. Refer to the exhibit.
You received this debug output to troubleshoot a Cisco IOS MGCP gateway call quality issue at a customer site. Which statement about this message is true?
A. The MGCP gateway is responding to an RQNT message from Cisco Unified Communications Manager to poll the call statistics of an active call.
B. The MGCP gateway is responding to an AUEP message from Cisco Unified Communications Manager to poll the call statistics of a terminating call.
C. The MGCP gateway is responding to an MDCX message from Cisco Unified Communications Manager during a call setup.
D. The MGCP gateway is responding to an AUCX message from Cisco Unified Communications Manager about an active call.
E. The MGCP gateway is responding to a DLCX message from Cisco Unified Communications Manager about a terminating call.
Answer: E
Q95. Which Cisco Unity Connection call handler greeting, when enabled, overrides all other greetings?
A. holiday
B. closed
C. internal
D. busy
E. alternate
Answer: E
Up to the minute 400-051 simulations:
Q96. Which two types of line codes are configurable for an E1 PRI controller on a Cisco IOS router? (Choose two.)
A. CRC4
B. AMI
C. B8ZS
D. HDB3
E. ESF
F. SF
Answer: BD
Q97. Refer to the exhibit.
A user is going through a series of dialing steps on a SIP Type B IP phone (for example, a Cisco 7975) to call an SCCP IP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assuming the calling SIP phone is associated with a SIP Dial Rule with a pattern value of 2001, which statement about the call setup process of this call is true?
A. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event, and Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
B. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event. When.the collected digits match the extension of the SCCP IP phone, Cisco Unified Communications Manager will extend the call only if the class of service configuration on both phones permits this action.
C. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
D. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call only if class of service configuration on both phones permits this action.
E. The SIP IP phone will wait for the interdigit timer to expire, and then send all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
Answer: D
Q98. Refer to the exhibit.
Ephone 1 has three active calls. The first two calls were inbound calls, which the user put on hold to place a third call outbound. What will happen on ephone 1 when a fourth call arrives for extension 2001?
A. The fourth call will be delivered to ephone 1 because it only received two inbound calls, one call less than the busy-trigger-per-button setting.
B. The fourth call will be delivered to ephone 1 because the huntstop channel setting is not yet saturated.
C. The fourth call will be delivered to ephone 1 because it can handle up to five calls on each button.
D. The fourth call will be held temporarily by the IOS Software until ephone 1 disconnects one of the active calls.
E. The fourth call will not be delivered and the caller will hear a user busy tone.
Answer: E
Q99. Which Device Pool configuration setting will override the device-level settings only when a device is roaming within a device mobility group?
A. Region
B. Location
C. SRST Reference
D. Calling Party Transformation CSS
E. Media Resource Group List
Answer: D
Q100. Which Call Control Discovery function allows the local Cisco Unified Communications Manager to listen for advertisements from remote call-control entities that use the SAF network?
A. CCD advertising service
B. CCD requesting service
C. SAF forwarder
D. SAF enabled trunks
E. CCD registration service
Answer: B