Question 1

Which statement describes the outcome when the trust boundary is defined at the Cisco IP phone?

Accepted Answer

A)  Packets or Ethernet frames are remarked at the access layer switch. 
B)  Packets or Ethernet frames are not remarked by the IP phone. 
C)  Packets or Ethernet frames are not remarked at the access layer switch. 
D)  Packets or Ethernet frames are remarked at the distribution layer switch.

Question 2

An administrator recently upgraded a Cisco Webex DX80 through its web interface but discovered the next morning that the unit has received to its previous version. What must the administrator do to prevent this from happening again?

Accepted Answer

A)  Assign a phone security profile with secure SIP. 
B)  Set the prepare cluster for rollback to pre-8.0 enterprise parameter to true. 
C)  Confirm the phone load name in the phone configuration. 
D)  Assign a universal device template to the phone.

Question 3

Regarding SIP integrations with Cisco Unified Communications Manager, if the Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, how should the addressing mode be set up in the Cisco Unity Connection?

Accepted Answer

A)  Set up is not required. 
B)  Set up for each group to use IPv4 and IPv6. 
C)  Set up media ports for each port group to use IPv4. 
D)  Set up IPv4 and IPv6 in Cisco Unified CM.

Question 4

Which Cisco UCM feature is used to determine the maximum bit rate for a call between two video endpoints?

Accepted Answer

A)  partitions 
B)  locations 
C)  regions 
D)  transformations

Question 5

Which action is required if an engineer wants to have Cisco Unified Communications Manager control the configuration for an MGCP gateway?

Accepted Answer

A)  Apply the ccm-manager configuration commands to the gateway. 
B)  Upload the custom configuration in the TFTP server in Cisco Unified CM. 
C)  From Cisco Unified CM > Device > Gateway > Add gateway, check the auto-configuration check box. 
D)  Configure the Cisco Unified CM's IP in voice service VoIP.

Question 6

Which user group is targeted by MRA services?

Accepted Answer

A)  production floor users who need wireless mobility in remote areas of the factory 
B)  mobile workers in a hot desk environment at HQ who log in every morning at possibly a different desk phone 
C)  on-the-go mobile workforce who connect to corporate phone services using their own mobile device 
D)  call center agents who dial out to remote customers

Question 7

Refer to the exhibit. What is a possible cause of the PRI issue?

Accepted Answer

A)  The cable is unplugged. 
B)  The clock source is incorrect. 
C)  The controller shut down. 
D)  The framing is configured incorrectly.

Question 8

A user reports that when receiving an inbound call on their IP Phone from the PSTN they are unable to transfer this call to another PSTN number. What is the reason for this failures?

Accepted Answer

A)  The IP phone is configured with the wrong region. 
B)  The incoming calling search space of the SIP trunk does not include the partition of the line in the IP phone. 
C)  The service parameter related to Offnet to Offnet Call Transfer is set to TRUE. 
D)  The gateway is configured with the wrong device pool.

Question 9

Which description of the Mobile and Remote Access feature is true?

Accepted Answer

A)  Collaboration Edge feature that enables remote individuals to perform international calls from Jabber with a VPN connection. 
B)  Collaboration Edge feature that enables remote individuals to access all enterprise collaboration services using a PC within the corporate environment. 
C)  Collaboration Edge feature that enables remote individuals to access enterprise collaboration services via Jabber without the use of a VPN connection. 
D)  Collaboration Edge feature that enables remote individuals to access enterprise collaboration services via Jabber with the use of a VPN connection.

Question 10

An engineer with troubleshoots poor voice quality on multiple calls. After looking at packet captures, the engineer notices high levels of jitter. Which two areas does the engineer check to prevent jitter? (Choose two.)

Accepted Answer

A)  The network meets bandwidth requirements. 
B)  MTP is enabled on the SIP trunk to Cisco Unified Border Element. 
C)  Cisco UBE manages voice traffic, not data traffic. 
D)  All devices use wired connections instead of wireless connections. 
E)  Voice packets are classified and marked.

Question 11

A presence redundancy group is deployed, and an engineer initiates a manual fallback. Which statement about Cisco Server Recovery Manager is true?

Accepted Answer

A)  disconnects all users that had been failed over, and the users must log in again 
B)  disconnects all users that had been failed over 
C)  restarts critical services on the secondary node 
D)  restarts the Cisco Presence Engine

Question 12

Which settings are needed to configure the SIP route pattern in Cisco Unified Communications Manager?

Accepted Answer

A)  pattern usage, IPv6 pattern, and SIP trunk/Route list 
B)  pattern usage, IPv4 pattern, IPv6 pattern, and description 
C)  pattern usage, IPv4 pattern, and SIP trunk/Route list 
D)  SIP trunk/Route list, description, and IPv4 pattern

Question 13

How does Cisco Unified Communications Manager perform a digit analysis on-hook versus off-hook for an outbound call from a Cisco IP phone that is registered to Cisco Unified CM?

Accepted Answer

A)  On-hook, Unified CM performs a digit-by-digit analysis; off-hook, Unified CM considers all digits were dialed and does not wait for additional digits. 
B)  On-hook, Unified CM considers all digits were dialed and does not wait for additional digits; off-hook, Unified CM performs a digit-by-digit analysis. 
C)  On-hook, by pressing the digits and entering "#" to process the call, Unified CM performs a digit-by-digit analysis; off-hook, Unified CM analyzes all digits as a string. 
D)  On-hook, no digit analysis is performed; off-hook, Unified CM requires the "#* to start the digit analysis.

Question 14

Which DTMF relay method configured on a SIP dial-peer will ensure that a media resource is not invoked by Unified CM for calls to UCCX IVRs?

Accepted Answer

A)  sdtmf-relay h245-signal 
B)  dtmf-relay rtp-nte 
C)  dtmf-relay sip-notify 
D)  dtmf-relay sip-kpml

Question 15

How are E.164 called-party numbers normalized on a globalized call-routing environment in Cisco Unified Communications Manager?

Accepted Answer

A)  Normalization is achieved by stripping or translating the called numbers to internally used directory numbers. 
B)  Normalization is achieved by setting up calling search spaces and partitions at the SIP trunks for PSTN connection. 
C)  Call ingress must be normalized before the call being routed. 
D)  Normalization is not required.

Question 16

When configuring Cisco UCM, which configuration enables phones to automatically reregister to a Cisco UCM publisher when the connection to the subscriber is lost?

Accepted Answer

A)  SRST 
B)  Route Group 
C)  Device Pool 
D)  Cisco UCM Group

Question 17

A customer has Cisco Unity Connections that is integrated with LDAP. As a Unity Connection administrator, you have received a request to change the first name for VM user. Where must the change be performed?

Accepted Answer

A)  Cisco Unity Connection 
B)  Cisco Unified Communications Manager end user 
C)  Active Directory 
D)  Cisco IM and Presence

Question 18

Which field of a Real-Time Transport Protocol packet allows receiving devices to detect lost packets?

Accepted Answer

A)  timestamp 
B)  CSRC (Contributing source I
D)  
C)  sequence number 
D)  SSRC (Synchronization source identifier)

Question 19

Which command is used in Cisco IOS XE TDM gateway to configure the voice T1/E1 controller to provide clocking?

Accepted Answer

A)  clock source line 
B)  Cisco IOS XE TDM gateway T1/E1 controller cannot provide clocking. 
C)  clock source internal 
D)  clock source network

Question 20

There is a saturated link that has traffic shaping configured. How is incoming traffic processed?

Accepted Answer

A)  Traffic is compressed so that the traffic fits within the bandwidth of the link. 
B)  Excess traffic is queued, and then dropped after the timer expires. 
C)  Excess traffic is queued for later transmission. 
D)  Excess traffic is dropped.

Exam 42: Developing Applications using Cisco Core Platforms and APIs (DEVCOR)