Question 1

What is the element of Cisco Collaboration infrastructure that allows Jabber clients outside of the network to register in Cisco Unified Communications Manager and use its resources?

Accepted Answer

A)  Cisco IM and Presence node 
B)  Cisco Unified Border Element 
C)  Cisco Expressway 
D)  Cisco Prime Collaboration Provisioning server

Question 2

Refer to the exhibit. This INVITE is sent to an endpoint that only supports G.729. What must be done for this call to succeed?

Accepted Answer

A)  Nothing: both sides support G.729. 
B)  Add a transcoder that supports G.711ulaw and G.729. 
C)  Add a media termination point that supports G.711ulaw and G.729. 
D)  Nothing: both sides support payload type 101.

Question 3

Refer to the exhibit. Endpoint A calls endpoint B. What is the only audio codec that can be used for the call?

Accepted Answer

A)  Telephone-event/8000 
B)  G7221/16000 
C)  PCMA/8000 
D)  G722/8000

Question 4

What is a valid class included in the 8-Class QoS Strategy in a VoIP network?

Accepted Answer

A)  Assured Forwarding 
B)  Broadcast Video 
C)  Multimedia Conferencing 
D)  Real-Time Interactive

Question 5

A user forwards a corporate number to an international number. What are two methods to prevent this forwarded call? (Choose two.)

Accepted Answer

A)  Set the Call Classification to OnNet for the international route pattern. 
B)  Block international dial patterns in the SIP trunk CSS. 
C)  Configure a Forced Authorization Code on the international route pattern. 
D)  Set Call Forward All CSS to restrict international dial patterns. 
E)  Check Route Next Hop By Calling Party Number on the international route pattern.

Question 6

Which transport protocol does the application layer protocol SNMP use?

Accepted Answer

A)  XML 
B)  UDP 
C)  SIP 
D)  HTTP

Question 7

Which two configuration elements are part of the Cisco Unified Communications Manager toll-fraud prevention? (Choose two.)

Accepted Answer

A)  SIP trunk security profile 
B)  Calling Search Space 
C)  SUBSCRIBE Calling Search Space 
D)  feature control policy 
E)  partition

Question 8

When a new SIP phone is registered to Cisco Unified Communications Manager, it keeps failing and showing an "unprovisioned" error message in the phone display. Which problem is a possible cause of this issue?

Accepted Answer

A)  Auto-registration is disabled on the Cisco Unified Communications Manager nodes and the phone device does not have a DN configured. 
B)  The DN assigned to the phone is already in use by another SIP phone. 
C)  The phone cannot download and install the latest firmware. 
D)  The DHCP settings are set incorrectly and the phone does not have an alternate TFTP defined. 
E)  The DN configuration for this phone is shared with an SCCP phone, which is not supported.

Question 9

Which two DNS records must be created to configure Service Discovery for or premises Jabber? (Choose two.)

Accepted Answer

A)  _cisco-uds._tls.cisco.com pointing to the IP address of Cisco Unified Communications Manager 
B)  _cuplogin._tcp.cisco.com pointing to a record of IM&P 
C)  _cuplogin._tls.cisco com pointing to the IP address of IM&P 
D)  _cisco-uds._tcp.cisco com painting to a record of Cisco Unified CM 
E)  _xmpp._tls.cisco.com pointing to a record of IM&P

Question 10

End users report bad video quality and voice choppiness on Cisco Collaboration endpoints. The engineer changed the device pool the users were in but did not correct the problem. Which action should be taken to troubleshoot this issue?

Accepted Answer

A)  Restart the Cisco Location Bandwidth Manager service on the Cisco UCM publisher 
B)  Check for duplex/speed mismatches between the network port settings of the system and network switch 
C)  Use direct IP address calls between two endpoints to troubleshoot call quality issues 
D)  Set the service parameter Use Video Bandwidth Pool for Immersive Video Calls to "false"

Question 11

Which SNMP service must be activated manually on the Cisco UCM after installation?

Accepted Answer

A)  Host Resources Agent 
B)  Cisco CallManager SNMP 
C)  Connection SNMP Agent 
D)  SNMP Master Agent

Question 12

Refer to the exhibit. When a UC Administrator is troubleshooting DTMF negotiated by this SIP INVITE, which two messages should be examined next to further troubleshoot the issue? (Choose two.)

Accepted Answer

A)  REGISTER 
B)  UPDATE 
C)  PRACK 
D)  NOTIFY 
E)  SUBSCRIBE

Question 13

An engineer is configuring a BOT device for a Jabber user in Cisco Unified Communication Manager Which phone type must be selected?

Accepted Answer

A)  third-party SIP device 
B)  Cisco Dual Mode for iPhone 
C)  Cisco Dual Mode for Android 
D)  Cisco Unified Client Services Framework

Question 14

Which call routing pattern is used for phone numbers that are in the E.164 format?

Accepted Answer

A)  \+.! Route Pattern 
B)  \+.! Translation Pattern 
C)  /+.! Route Pattern 
D)  \+1.[2-9]XX[2-9]XXXXXX Called Party Transformation Pattern

Question 15

Which action enables Cisco MRA?

Accepted Answer

A)  Internal SIP clients registered to Cisco UCM can call external companies 
B)  Clients such as Cisco Jabber can use call control on Cisco UCM 
C)  VPN connectivity can be established to Cisco UCM 
D)  Cisco UCC Express clients can obtain VPN connectivity to Cisco UCC Enterprise

Question 16

Which method is used to avoid toll fraud with Cisco Unified Communications Manager calls?

Accepted Answer

A)  call policy service 
B)  TOLLFRAUD_APP 
C)  default zone access rules 
D)  class of service

Question 17

An engineer is configuring a Cisco Unified Border Element to allow the video endpoints to negotiate without the Cisco Unified Border Element interfering in the process. What should the engineer configure on the Cisco Unified Border Element to support this process?

Accepted Answer

A)  Configure codec transparent on the dial peers. 
B)  Configure a transcoder for video protocols. 
C)  Configure a hardcoded codec on the dial peers. 
D)  Configure pass-thru content sdp on the voice service.

Question 18

Refer to the exhibit. Calls to Cisco Unity Connection are failing across Cisco Unified Border Element when callers try to select a menu prompt. Why is this happening and how is it fixed?

Accepted Answer

A)  Cisco Unified Border Element is sending the incorrect media IP address. The IP address of the loopback interface must be advertised in the SDP. 
B)  Cisco Unity Connection is configured on G.729 only. Cisco Unity Connection must be reconfigured to support iLBC. 
C)  Cisco Unified Border Element is not sending any support for DTMF. DTMF configuration must be added to the appropriate dial peer. 
D)  The Cisco Unity Connection Call Handler is configured for a "Release to Switch" transfer type. Transfers must be disabled for the Cisco Unity Connection Call Handler.

Question 19

A collaboration engineer must configure Cisco Unified Border Element to support up to five concurrent outbound calls across an Ethernet link with a bandwidth of 160 kb to the Internet Telephony Service Provider. Which set of commands allows the engineer to complete the task without compromising voice quality?

Accepted Answer

A)  dial-peer voice 1 voip translation-profile outgoing Strip9 max-conn 5 destination-pattern 91[2-9]..[2-9]……$ session protocol sipv2 session target ipv4:142.45.10.1 dtmf-relay rtp-nte sip-notify sip-kpml 
B)  codec ilbc mode 20 
C)  codec aacld 
D)  codec mp4a-latm

Question 20

After an engineer runs the utils ntp status command on the Cisco Unified Communications Manager publisher, the stratum value is 16. Which issue can the Cisco Unified CM cluster experience?

Accepted Answer

A)  Unified CM sends an NTPv4 packet. 
B)  Database replication is not synchronized on the Unified CM nodes. 
C)  The cluster loses access to port 124 at the firewall. 
D)  The date/time group on all phones defaults to the time zone of the engineer.

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