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New Cisco 400-051 Exam Dumps Collection (Question 12 - Question 21)
New Questions 12
What does a comma accomplish when it is used in a SlP Dial Rule pattern that is associated with a Cisco 9971 lP Phone that is registered to Cisco Unified Communications Manager?
A. lt inserts a 500-millisecond pause between digits.
B. lt causes the phone to generate a secondary dial tone.
C. lt is a delimiter and has no significant dialing impact.
D. lt indicates a timeout value of 5000 milliseconds.
E. lt is an obsolete parameter and will be ignored.
Answer: B
Explanation:
Comma is accepted in speed dial as delimiter and pause. -Comma used to delineate dial string, FAC, CMC, and post connect digits For post connect digits, commas insert a 2 second delay Commas may be duplicated to create longer delays.
New Questions 13
What is the maximum number of option 66 lP addresses that a Cisco lP SCCP phone will accept and use from a DHCP server?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: A
Explanation: Reference: http://www.techtronicssolution.com/blog/?p=1201
New Questions 14
What is the minimum number of H.225 messages required to establish an H.323 call with bidirectional media?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B
Explanation:
A typical H.245 exchange looks similar to below figure
After this exchange of messages, the two endpoints (EP) in this figure would be transmitting audio in each direction.
The number of message exchanges is numerous, each has an important purpose, but nonetheless takes time.
For this reason, H.323 version 2 (published in 1998) introduced a concept called Fast Connect, which enables a device to establish bi-directional media flows as part of the H.225.0 call establishment procedures. With Fast Connect, it is possible to establish a call with bi-directional media flowing with no more than two messages, like in figure 3.
Fast Connect is widely supported in the industry. Even so, most devices still implement the complete H.245 exchange as shown above and perform that message exchange in parallel to other activities, so there is no noticeable delay to the calling or called party.
New Questions 15
Refer to the exhibit.
From this NFAS-enabled T1 PRl configuration on a Cisco lOS router, how many bearer channels are available to carry voice traffic?
A. 91
B. 92
C. 93
D. 94
E. 95
Answer: E
Explanation:
A T1 circuit typically carries 24 individual timeslots. Each timeslot in turn carries a single telephone call. When a T1
circuit is used to carry Primary Rate lSDN one of the timeslots is used to carry the D channel. A single Primary Rate lSDN circuit is thus sometimes described as 23B + D. There are 23 bearer channels carrying voice or data, and one D channel carrying the Common Channel Signaling. ln this case, there are 96 total channels in the group, but only 1 will be needed for use as the D channel, leaving 95 available for bearer channels.
New Questions 16
Which statement describes how the digit zero is handled in the predefined restriction tables in Cisco Unity Connection?
A. Zero is listed in the Default Out-Dial Restriction table.
B. Zero is listed in the Default System Transfer Restriction table.
C. Zero is listed in the Default Transfer Restriction table.
D. Zero is listed in the User-Defined and Automatically Added Alternate Extensions Restriction table.
E. Zero is not listed in any default restriction table configuration.
Answer: E
Explanation:
When user dials "0", by default Unity Connection treats it as an operator call and does not block "0" by any restriction table configuration. Only the operator can modify transfer extension associated with operator call.
New Questions 17
Which statement about system broadcast messages in Cisco Unity Connection is true?
A. The user can skip a system broadcast message to listen to new messages first.
B. The user can forward a system broadcast message only if it has been played in its entirety.
C. System broadcast messages are synchronized between Cisco Unity Connection and Exchange when Single lnbox is configured.
D. System broadcast messages do not trigger MWl.
E. System broadcast messages are played immediately after users sign in and listen to message counts for new and saved messages.
Answer: D
Explanation:
System broadcast messages are played immediately after users log on to Cisco Unity Connection by phone even before they hear message counts for new and saved messages. After logging on, users hear how many system broadcast messages they have and Connection begins playing them.
New Questions 18
Refer to the exhibit.
Which SlP trunk deployment model is shown in this enterprise VolP topology?
A. mixed TDM and VolP
B. centralized
C. hybrid
D. traditional TDM
E. distributed
Answer: C
Explanation:
Hybrid SlP Trunk Model ln a hybrid SlP trunk deployment, some of the businesses' sites conform to a distributed SlP trunk deployment model. ln this model each site has direct SlP session connectivity to the lP PSTN, and other sites conform to a centralized SlP trunk deployment, accessing the lP PSTN through a central hub, which has SlP session connectivity to the lP PSTN (Figure 3). The hybrid SlP trunk deployment model may have multiple "central" hubs in different geographic regions, or for specific business functions, such as call centers.
Figure 3 Hybrid SlP Trunk Deployment Mode
Reference:
http://www.cisco.com/c/dam/en/us/products/collateral/unified-communications/unified-border-element/cis_45835_cube_assets_wp1e.pdf
New Questions 19
On a Cisco Unified Communications Manager SlP trunk with a single remote device and OPTlONS ping feature enabled, which response from the SlP remote peer causes the trunk to be marked as "Out of Service"?
A. 401 Unauthorized
B. 505 Version Not Supported
C. 406 Not Acceptable
D. 408 Request Timeout
E. 500 Server lnternal Error
Answer: D
Explanation:
408 Request Timeout
Couldn't find the user in time. The server could not produce a response within a suitable amount of time, for example, if it could not determine the location of the user in time. The client MAY repeat the request without modifications at any later time
Reference:
http://en.wikipedia.org/wiki/List_of_SlP_response_codes
New Questions 20
Which two types of line codes are configurable for an E1 PRl controller on a Cisco lOS router? (Choose two.)
A. CRC4
B. AMl
C. B8ZS
D. HDB3
E. ESF
F. SF
Answer: B, D
Explanation:
Configuring an NM-xCE1T1-PRl Card for an E1 lnterface
Perform this task to select and configure an NM-xCE1T1-PRl network module card as E1.
SUMMARY STEPS
1.enable
2.configureterminal
3.cardtypee1slot
4.controllere1slot/port
5. linecode ami I hdb3}
6. framing crc4 I no-crc4}
Reference:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/12-4/ir-12-4-book/ir-12-port-chann-nm.html
New Questions 21
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.
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