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Exam Code: 400-051
Exam Name: CCIE Collaboration
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Exam Code: 642-980
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Exam Code: 642-035
Exam Name: Troubleshooting Cisco Data Center Unified Computing
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CCIE Collaboration

Exam Number 400-051 CCIE Collaboration
Associated Certifications CCIE Collaboration
Duration 120 minutes (90 - 110 questions)
Available Languages English
Register Pearson VUE
Exam Policies Read current policies and requirements
Exam Tutorial Review type of exam questions

This exam validates that candidates have the skills to plan, design, implement, operate, and troubleshoot enterprise collaboration and communication networks.

NO.1 Refer to the exhibit.
Which DTMF relay method is advertised when the originating SIP gateway sends an INVITE message
with a Call-Info header shown?
A. RFC 2833
B. SIP INFO
C. SIP NOTIFY
D. SIP KPML
E. In-band audio
Answer: C

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Explanation:
You can develop user-specific applications that reside on your network entity and have the ability to
subscribe for event services supported by the IMG. If the network entity wants the ability to detect
an entered DTMF digit (only telephone event of "###" are currently supported) from the TDM-side of
a call to the IP side of a call, the entity can subscribe to the IMG for these events and receive SIP
NOTIFY events containing the digit event.

NO.2 Refer to the exhibit.
How many SIP signaling dialog(s) took place in this SIP message exchange between two SIP user
agents?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Answer: A

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Explanation:
During the establishment, maintenance and termination of a SIP session, signaling messages are
exchanged between the two SIP endpoints. There are two different kinds of signaling "conversations"
that those messages take part in: transactions and dialogs. A transaction is a SIP message exchange
between two user-agents that starts with a request and ends with its final response (it can also
contain zero or more provisional responses in between). For example, during the termination of a SIP
session, one user releases the call by sending a BYE request and the other party replies back with a
200 OK response. This message exchange is called a transaction. But what happens in the case of the
INVITE request? The establishment of a SIP session starts basically with an INVITE request and is
considered as completed upon the receipt of the ACK. In this case, the transaction starts with the
INVITE request and ends with the 200 OK, so the ACK is not part of the transaction. The ACK can be
considered as a transaction on its own. However, when the final response to an INVITE is not a 2xx
response, then the ACK is considered as part of the transaction. A dialog is a complete exchange of
SIP messages between two user-agents. That means that transactions are actually parts of a dialog.
For example, in the case of a SIP session establishment, a dialog starts with the INVITE-200 OK
transaction, continues with the ACK and ends with the BYE-200 OK transaction. The picture below
depicts the dialog and transactions that take place during the establishment of a SIP session: Note:
There can also be subsequent requests that belong to the same dialog, such as a BYE or a re-INVITE
message. As out-of-dialog requests are considered messages such as an initial INVITE request for a
new session or an OPTIONS message for checking capabilities. There are different SIP
headers/parameters that identify the dialogs and transactions, and they will be analyzed in later
posts.
Cisco 400-051 Exam
Reference: https://telconotes.wordpress.com/2013/03/13/sip-transactions-vs-dialogs/

NO.3 Which statement about using the Answer File Generator to load a Cisco Unified
Communications virtual machine is true?
A. You must copy the output text to a file named platformConfig.txt.
B. Each host should be copied to its own configuration file.
C. The answer file can be used only when performing the new identity process to load the Cisco
Unified Communications virtual machines.
D. The configuration file should be placed inside an ISO file and mounted on the virtual machine.
Answer: B

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Explanation:
Reference:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/install/9_0_1/CUCM_BK_I87B437D_0
0_installing-cucm-90/CUCM_BK_I87B437D_00_installing-
cucm90_chapter_0100.html#CUP0_TK_G0262E75_00

NO.4 Multiple Jabber for Windows users are having problems logging into the voicemail server. The
Cisco Unity Connection administrator has reset the password and emailed them the new credentials,
as well as the instructions about how to reset them in Jabber. The users cannot see the Phone
Accounts tab under Jabber settings to complete the instructions. Which two steps resolve this issue?
(Choose two.)
A. In the Cisco Unified CM Jabber Service Profile, change the Credentials source for voicemail service
to "not set".
B. In Cisco Unified CM, create a MailStore service and assign it to the Jabber Service Profile as
Primary.
C. In the IM&P server CCMCIP Profile, uncheck the "Make this the default CCMCIP Profile for the
system".
D. In the IM&P server Enterprise Parameters Configuration, enable the Phone Personalization
parameter.
E. In the Cisco Unified CM Jabber Service Profile, uncheck "Make this the default service profile for
the system".
Answer: A,B

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NO.5 Which statement describes the Maximum Serving Count service parameter of the Cisco TFTP
service on Cisco Unified Communications Manager?
A. It specifies the maximum number of files in the TFTP server disk storage.
B. It specifies the maximum number of TFTP client requests to accept and to serve files at a given
time.
C. It specifies the maximum file support by the Cisco TFTP service.
D. It specifies the maximum file counts, in cache as well as in disk, that are supported by the Cisco
TFTP service.
E. It specifies the maximum number of TFTP client requests to accept and to serve files in a
120minute window.
Answer: B

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