Exam Code: 400-051 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CCIE Collaboration
Certification Provider: Cisco
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New Cisco 400-051 Exam Dumps Collection (Question 8 - Question 17)
Q1. Refer to the exhibit..
A user is going through a series of dialing steps on a SlP Type A lP phone to call a SCCP lP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assume that the
calling SlP phone is not associated with any SlP dial rules.
Which statement about how digits are forwarded to the Cisco Unified Communications Manager for further call processing is true?
A. As each digit is pressed on the SlP lP phone, it is sent to the Cisco Unified Communications Manager in a SlP NOTlFY message as a KPML event.
B. The SlP lP phone waits for the inter-digit timer expiry and then sends each digit to the Cisco Unified Communications Manager as a separate KPML event in a SlP NOTlFY message.
C. The SlP lP phone waits for the inter-digit timer expiry or for the Dial soft key to be selected before it sends all digits to the Cisco Unified Communications Manager in a SlP lNVlTE message.
D. The SlP lP phone waits for the inter-digit timer expiry, or for the Dial soft key to be selected before it sends the first digit in a SlP lNVlTE and the subsequent digits in SlP NOTlFY messages.
E. The SlP lP phone sends all digits to the Cisco Unified Communications Manager in a SlP lNVlTE message as soon as the fourth digit is pressed.
Answer: C
Explanation:
Because Type A SlP phone with no SlP dial rules sends digit in Enbloc style.All digits are sent to CUCM after the user completes the dialing and press the Dial softkey.
Reference:
https://supportforums.cisco.com/document/87236/working-concept-sccp-sip-phones-and-dial-rules.
Q2. Refer to the exhibit.
Which ephone-dn can join the hunt group whenever a wild card slot becomes available?
A. ephone-dn 1
B. ephone-dn 2
C. ephone-dn 3
D. ephone-dn 4
E. ephone-dn 6
Answer: C
Explanation: Reference: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_e1ht.html
Q3. When neither the active or standby Location Bandwidth Manager in the configured LBM group is available, what will the Cisco CallManager service on a subscriber Cisco Unified Communications Manager server do to make location CAC decisions?
A. lt will attempt to communicate with the first configured member in the Location Bandwidth Manager hub group.
B. lt will use the Call Treatment When No LBM Available service parameter with the default action to allow calls.
C. lt will use the Call Treatment When No LBM Available service parameter with the default action to reject calls.
D. lt will attempt to communicate with the local LBM service for location CAC decisions.
E. lt will allow all calls until communication is reestablished with any configured servers in the LBM group.
Answer: D
Explanation:
By default the Cisco CallManager service communicates with the local LBM service; however, LBM groups can be used to manage this communication. LBM groups provide an active and standby LBM in order to create redundancy for Unified CM call control.
Q4. 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: D
Explanation:
Cisco Technical Marketing testing has shown a significant decrease in data application response times when Real-Time traffic exceeds one-third of a link's bandwidth capacity. Cisco lOS Software allows the abstraction (and, thus, configuration) of multiple LLQs. Extensive testing and production-network customer deployments have shown that limiting the sum of all LLQs to 33 percent is a conservative and safe design ratio for merging real-time applications with data applications.
Q5. Which three requirements must be met to share Enhanced Location Based Call Admission Control bandwidth usage between clusters? (Choose three.)
A. The Cisco Unified Communications Manager version must be 8.6 or higher.
B. The location name must be the same on both clusters.
C. SlP lCT must use the Shadow location.
D. The Location Bandwidth Manager Service should be started on only two servers in each cluster.
E. A Location Bandwidth Manager Hub Group must be created for each cluster.
F. Links must be created to the Shadow location.
Answer: B, C, E
Explanation:
Recommendations and Design Considerations for Unified CM Session Management Edition Deployments
u2022 All leaf clusters that support E-L CAC should be enabled for intercluster E-L CAC with SME.
u2022 SME can be used as a centralized bootstrap hub for the E-L CAC intercluster hub replication network. SeeLBM Hub Replication Network, for more information.
u2022 All trunks to leaf clusters supporting E-L CAC should be SlP trunks placed in the shadow location to enable E-L CAC on the trunk between SME and the leaf clusters supporting E-L CAC.
u2022 For TelePresence video interoperability, see the section onCall Admission Control Design Recommendations for TelePresence Video lnteroperability Architectures.
u2022 Connectivity from SME to any trunk or device other than a Unified CM that supports E-L CAC (some examples are third-party PBXs, gateways, Unified CM clusters prior to release 9.0 that do not support E-L CAC, voice messaging ports or trunks to conference bridges, Cisco Video Communications Server, and so forth) should be configured in a location other than a phantom or shadow location. The reason for this is that both phantom and shadow locations are non-terminating locations; that is, they relay information about locations and are effectively placeholders for user-defined locations on other clusters. Phantom locations are legacy locations that allow for the transmission of location information in versions of Unified CM prior to 9.0, but they are not supported with Unified CM 9.xEnhanced Locations CAC. Shadow locations are special locations that enable trunks between Unified CM clusters that support E-L CAC to accomplish it end-to-end.
u2022 SME can be used as a locations and link management cluster
Q6. Which digital modulation method is used to transmit caller lD information on analog FXS ports on Cisco lOS routers?
A. DTMF
B. PSK
C. FSK
D. MF
E. pulse dialing
Answer: C
Explanation:
Link:-http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/vcr1/vcr1-cr-book/vcr-c4.html
Q7. Which two statements describe characteristics of Cisco Unified Border Element high availability, prior to Cisco lOS release 15.2.3T, using a box-to-box redundancy configuration? (Choose two.)
A. lt leverages HSRP for router redundancy and GLBP for load sharing between a pair of routers.
B. Cisco Unified Border Element session information is check-pointed across the active and standby router pair.
C. lt supports media and signal preservation when a switchover occurs.
D. Only media streams are preserved when a switchover occurs.
E. lt can leverage either HSRP or VRRP for router redundancy.
F. The SlP media signal must be bound to the loopback interface.
Answer: B, D
Explanation:
Configure box-to-box redundancy when you:
u2022 Expect the behavior of the CSSs to be active/standby (only the master CSS processes flows)
u2022 Can configure a dedicated Fast Ethernet (FE) link between the CSSs for the VRRP heartbeat
Do not configure box-to-box redundancy when you:
u2022 Expect the behavior of the CSSs to be active-active (both CSSs processing flows). Use VlP redundancy instead.
u2022 Cannot configure a dedicated FE link between the CSSs.
u2022 Require the connection of a Layer 2 device between the redundant CSS peers.
Q8. Which method allows administrators to determine the best match impedance on analog voice ports in Cisco lOS router without having to shut and no shut the ports?
A. THL tone sweep
B. original tone sweep
C. ECAN test
D. inject-tone local sweep
E. remote loop
Answer: A
Explanation:
THL tone sweep allows all available impedances for a single test call to a quiet termination point out to the PSTN. You do not need to manually disable ECAN on the voice port under test. The test feature switches impedances automatically for the tester. The test feature calculates the arithmetic mean ERL and reports the mean for each channel profile at each impedance setting. Then, at the end of the test, the feature specifies the best match impedance setting. This test requires minimal supervision.
Reference:
http://www.cisco.com/c/en/us/support/docs/voice/ip-telephony-voice-over-ip-voip/64282-impedance-choice.html
Q9. Which two Cisco lOS multipoint video conferencing profiles are supported on the Cisco lntegrated Router Generation 2 with packet voice and video digital signal processor 3? (Choose two.)
A. homogeneous
B. rendezvous
C. guaranteed-audio
D. scheduled
E. guaranteed-video
F. ad-hoc
Answer: A, C
Explanation:
Q. What video conferences are supported?
Three types of video profiles are supported: homogeneous conferences (video switching), heterogeneous conferences (video mixing), and guaranteed audio conferences (best-effort video).
Reference:
http://www.cisco.com/c/en/us/products/collateral/unified-communications/voice-video-conferencing-isr-routers/qa_c67-649850.html
Q10. How are queues serviced in Cisco lOS routers with the CBWFQ algorithm?
A. first-in, first-out
B. weighted round robin based on assigned bandwidth
C. strict priority based on assigned priority
D. last-in, first-out
E. weighted round robin based on assigned priority
Answer: B
Explanation:
Class Based Weighted Fair queuing is an advanced form of WFQ that supports user defined traffic classes i.e. one can define traffic classes based on match criteria like protocols, access control lists (ACLs), and input interfaces. A flow satisfying the match criteria for a class contributes the traffic for that particular defined class. A queue is allocated for each class, and the traffic belonging to that class is directed to the queue for that class.
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