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Question 1:
How does WRED prevent congestion?
A. It marks which packets to drop randomly.
B. It drops packets selectively based on the IP precedence value.
C. It marks which packets to drop based on how much traffic the client sent.
D. It drops packets that have a higher DSCP value last.
Correct Answer: B
Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-10/configuration_guide/qos/b_1610_qos_9400_cg/b_1610_qos_9400_cg_chapter_010.pdf
Question 2:
Refer to the exhibit.
An engineer configures ISDN on a voice gateway. The provider confirms that the PRI is configured with 10 channels the engineer ordered and is working from the provider side, but the engineer cannot get a B-channel to carry voice. The rest of the configuration for the serial interface and voice network is functioning correctly.
Which actions must be taken to carry voice?
A. The engineer must activate the controller card on the voice gateway before configuring the device.
B. The engineer used a T1 interface but must use an E1 interface.
C. The pri-group timeslots command must be 0-9 for the 10 channels because all values on a router start with 0.
D. The engineer must manually revert the order of using the channels.
Correct Answer: A
Question 3:
An administrator installs a new Cisco Telepresence video endpoint and receives this error: “AOR is not permitted by Allow/Deny list.”
Which action should be taken to resolve this problem?
A. Correct the restriction policy settings.
B. Change the SIP trunk configuration.
C. Upload a new policy In VCS.
D. Reboot the VCS server and attempt reregistration.
Correct Answer: A
The error message “AOR is not permitted by Allow/Deny list” indicates that the endpoint is not allowed to register with the VCS server because it is not on the Allow List or it is on the Deny List. To resolve this problem, you must correct the restriction policy settings.
Reference: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/articles/vcs_endpoint_registration_problems_kb_460.html
Question 4:
What is the correct statement about CUCM and Cisco IMandP backups?
A. Backups should the scheduled during hours to avoid system performance issues.
B. Backups are saved as .tar files and encrypted using the web administrator account.
C. Backups are saved as unencrypted tar files.
D. Backups are not needed for subscriber Cisco Unified Communication Manager and Cisco IM and Presence servers.
Correct Answer: A
Question 5:
Refer to exhibit.
A company recently deployed CISCO Jabber Users log in to Jabber by using their email address in a domain named company com. The users report that they cannot register their telephony services when working from unless they use a VPN. An engineer runs DNS lookup tool in Cisco Expressway-C to troubleshoot tie
What IS me cause of the issue?
A. The company com domain must be resolved only in Expressway-E
B. There is a missing SRV record for the company.com domain.
C. The TTL value for the company.com is too short.
D. There must be only response for the company.com domain
Correct Answer: B
Question 6:
Which protocols does Cisco IM and Presence use to authenticate Jabber?
A. XMPP
B. SOAP
C. TCP
D. LDAP
E. QBE
Correct Answer: AB
https://www.cisco.com/c/en/us/support/docs/unified-communications/jabber/212471-jabber-login.html#anc5
Question 7:
Which command in the MGCP gateway configuration defines the secondary Cisco Unified Communications Manager server?
A. mgcapp
B. ccm-manager fallback-mgcp
C. mgcp call-agent
D. ccm-manager redundant-host
Correct Answer: D
https://www.cisco.com/c/en/us/td/docs/ios/voice/cminterop/configuration/guide/12_4t/vc_12_4t_book/vc_ucm_mgcp_gw.html
Question 8:
A user forwards a corporate number to an international number. What are two methods to prevent this forwarded call? (Choose two.)
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.
Correct Answer: CD
Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/manual/cmeadm/cmetrans.html
Question 9:
In the cisco expressway solution, which two features does mobile and Remote access provide? (Choose two)
A. VPN-based enterprise access for a subset of Cisco Unified IP Phone models
B. Secure reverse proxy firewall travelsal connectivity
C. the ability to register third-party SIP or H.323 devices on Cisco UCM without requiring VPN
D. the ability of Cisco IP Phones to access the enterprise through VPN connection
E. the ability for remote users and their devices to access and consume enterprise collaboration applications and services
Correct Answer: BE
Mobile and Remote Access
The mobile and remote access feature of the Cisco Expressway solution provides secure reverse proxy firewall traversal connectivity, which enables remote users and their devices to access and consume enterprise collaboration applications and services.
Question 10:
Users dial a 9 before a 10-digit phone number to make an off-net call All 11 digits are sent to the Cisco Unified Border Element before going out to the PSTN The PSTN provider accepts only 10 digits.
Which configuration is needed on the Cisco Unified Border Element for calls to be successful?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: A
Question 11:
What does average rate limiting allow?
A. transmits traffic bursts up to the Bc size
B. more traffic than the CIR to be sent when there is available bandwidth
C. bandwidth up to the Be size
D. traffic to burst to the Be size when there is available bandwidth
Correct Answer: D
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_plcshp/configuration/15-mt/qos-plcshp-15-mt-book/qos-plcshp-oview.html
Question 12:
An engineer must configure codec on a Cisco Unified Border Element to prefer the G.711 ulaw and use G.711 codec as the next The engineer logs In to the CUBE, enters the dial.peer configuration level, and runs the voice-class codec 100 command.
Which set of commands completes the configuration?
A. voice class codec 100 codec g7llalaw preference 1 codec a7Hulaw preference 2
B. voice class codec 11j codec <?7iiulaw preferred codec g7iialaw
C. vice class codec 100 codec preference 1 g7llulaw codec preference 2 o711alaw
D. voice class codec ::: codec g711ulaw g711alaw
Correct Answer: C
The following commands are used to configure the codec on a Cisco Unified Border Element to prefer the G.711 ulaw and use G.711 alaw as the next codec:
1.
Code snippet
2.
voice class codec 100
3.
codec preference 1 g711ulaw
4.
codec preference 2 g711alaw
The voice class codec 100 command creates a new voice class with the ID of 100. The codec preference 1 g711ulaw command sets the preference for the G.711 ulaw codec to 1. The codec preference 2 g711alaw command sets the preference for the G.711 alaw codec to 2.
Question 13:
An engineer configures local route group to simplify a dial plan. Where does the engineer set the route groups according to the local route group names that are configured?
A. CSS
B. route pattern
C. device pool
D. route list
Correct Answer: C
Question 14:
Which information is needed to restore the backup of a Cisco UCM publisher successfully?
A. the TFTP server details
B. the application credentials for Cisco UCM
C. the security password for Cisco UCM
D. the FTP server details
Correct Answer: C
https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/213527-changing-cucm-os-admin-and-security-pass.pdf
Note: Please take fresh backup after Security password is changed to avoid any backup/restore related issues.
Question 15:
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 failure?
A. The incoming calling search space of the SIP trunk does not include the partition of the line in the IP phone
B. The gateway is configured with the wrong device pool
C. The service parameter related to fnet to Offnet Call Transfer is set to TRUE
D. The IP phone is configured with the wrong region
Correct Answer: C