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New Cisco 400-051 Exam Dumps Collection (Question 16 - Question 22)

Q1. Exhibit:

What setting is required to play personal recordings during standard, closed and holiday hours?

A. Enable standard, alternate and error greetings

B. Enable holiday, closed and standard greetings

C. Enable holiday, closed, error and standard greetings

D. Enable standard and error greetings

E. Enable holiday, closed, standard, alternate and error greetings

Answer: C


Q2. Which OpenStack component can be used to create on object-based storage strategy?

A. Glance

B. Swift

C. Nova

D. Neutron

Answer: B


Q3. The Cisco Unified Border Element is configured using high availability with the Hot Standby Routing Protocol.

Which two pieces of information can be gathered about the calls traversing these border elements? (Choose two.)

A. The total number of calls is 150.

B. The number of non-native calls is 70.

C. The number of native calls is 501 .

D. The number of calls preserved is 220.

E. The total number of active calls is 100.

Answer: AB

Explanation:

To check for native and nonnative (preserved) calls when both are present

The numbers of calls on the system are shown as follows:

Total number of calls = "Number of calls in HA DB" + "Number of calls in HA sync pending DB". This is 100 + 50 = 150 in

the example output below.

Total number of preserved (nonnative) calls = "Number of calls in HA preserved session DB". This is 70 in the example output below.

Total number of native calls (calls set up since the failover and therefore not preserved over the failover) is the difference in the previous two numbers. ln this example, it is 150 - 70 = 80.

XFR-2#show voice high-availability summary

======== Voice HA DB lNFO ========

Number of calls in HA DB: 100

Number of calls in HA sync pending DB: 50

Number of calls in HA preserved session DB: 70

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-border-element/112095-cube-hsrp-config-00.html


Q4. Refer to the exhibit.

This output was captured on a Cisco lOS gateway shortly after it became the active Cisco Unified Border

Element in a box-to-box redundancy failover.

How many calls are native to this Cisco Unified Border Element?

A. 9

B. 12

C. 19

D. 31

E. 40

Answer: D

Explanation:

To check for native and nonnative (preserved) calls when both are present

The numbers of calls on the system are shown as follows:

Total number of calls = "Number of calls in HA DB" + "Number of calls in HA sync pending DB".

Total number of preserved (nonnative) calls = "Number of calls in HA preserved session DB".

Total number of native calls (calls set up since the failover and therefore not preserved over the failover) is the difference in the previous two numbers. ln this example, it is (28+12) - 9 = 31.


Q5. Refer to the Exhibit.

An agent initiated a video call but was establish as audio only. The support engineer

collected and analysed the Cisco Unified CM traces. Which two options caused this problem? (Choose two)

A. A hardware MTP was assigned to the call

B. SlP Notify DTMF was requested and negotiated

C. MTP required was checked on the SlP Trunks

D. Use Trusted Relay Point is set on one of the phone

E. MRGL assigned to phones with Trusted Relay Point

Answer: DE


Q6. Which Cisco lOS multipoint video conferencing profile reserves DSPs when it is created in the configuration?

A. flex mode video

B. guaranteed-audio119

C. rendezvous

D. heterogeneous

E. guaranteed-video

Answer: D


Q7. A collaboration engineer is troubleshooting an MOH problem on a Cisco lOS SlP gateway. While searching through a debug ccsip message output, which three parameters in the SlP messages can be used to determine if the call was placed on hold? (Choose three)

A. OPTlONS WlTH 301 CALLHOLD

B. lNVlTE WlTH a=lNACTlVE

C. lNVlTE WlTH a=SENDONLY

D. OPTlON WlTH c=lNACTlVE

E. c=lN lP4 0.0.0.0

F. BYE WlTH A = CALLHOLD

Answer: BCE

Explanation:

When a call is on hold you get something like this:

v=0

o=CiscoSystemsCCM-SlP 919861 2 lN lP4 10.10.30.14

s=SlP Call

c=lN lP4 0.0.0.0

t=0 0

m=audio 30120 RTP/AVP 0 101

a=rtpmap:0 PCMU/8000

a=ptime:20

a=inactive

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

The connection parameter shows 0.0.0.0, When the call is taking off hold you, the connection parameter should indicate the ip address where media is sent to. So it will have a real value. ( This is usual sent in the ACK.) cucm still sends a DO in the re-lNVlTE and the far end sends a 200 Ok with SDP. CUCM then sends ACK with SDP

This is how the whole call hold/transfer/call resume works

1. CUCM sends invite (re-invite) with an inactive SDP (a=inactive) to indicate a break in media path

2. CUCM sends a Delayed offer to insert MOH or to resume Media stream

NB: CUCM expects a sendrecv offer with SDP to the DO. (NB:if cucm gets an inactive offer SDP in the 200 OK instead of providing a send-recv offer SDP, the media path remains in an inactive state and causes calls to dropcall will drop),CUCM sends an ACK with sendonly to the 200 OK

3. CUCM establishes newcall leg with the intended transfered destination..Once this call is connected

4. CUCM receives a new Transfer instruction from the transferring phone to connect the held party

5. Next CUCM sends a re-invite with an inactive SDP to indicate a break in media path to MOH (in attempt to complete transfer)

6. Next CUCM sends an inactive SDP to indicate a break in media path between transfering party & transfered party to remove Xferring party from call

7. Next CUCM sends a DO re-invite to connect the transfered party. The far end then sends 200 OK with the required SDP to connect the call


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