Implementing Cisco Collaboration Cloud and Edge Solutions (CLCEI) practice questions

1. Question 1 of 25

   What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?

   • AYou must have the Intercluster Sync Agent working across your IM and Presence clusters.
   • BYou must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
   • CYour IM and Presence Service clusters must have Multiple Device Messaging disabled.
   • DAXL service should be activated only on the publisher of each IM and Presence cluster.

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   Correct answer: A

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   • A100%

2. Question 2 of 25

   Which complication does a NAT introduce in SDP for a SIP call?

   • AAdditional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
   • BWhen the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
   • CThe IP address specified in the connection data field may be an unrouteable internal address.
   • DThe encryption keys advertised in the SDP are only valid for clients not behind a NAT.

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   Correct answer: C

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   • C100%

3. Question 3 of 25

   When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?

   • ASDP b-line
   • BSIP record route
   • CSDP c-line
   • DSDP m-line

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   Correct answer: C

   How others answered

   • C100%

4. Question 4 of 25

   A company is installing Cisco Collaboration infrastructure and one of the requirements is that they must be able to communicate with many external parties that are using H.323 and SIP. Internally they want to register the endpoints only on SIP. Which functionality would describe the feature that needs to be enabled and where to achieve this?

   • AInterworking in Expressway-C
   • BTranscoding in Cisco Unified Communications Manager
   • CTranscoding in Expressway-C
   • DInterworking in Cisco Unified Communications Manager

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   Correct answer: A

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   • A100%

5. Question 5 of 25

   Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one major complication in implementing NAT ALG for voice and video devices?

   • AInternal endpoints cannot use addresses from the private address space.
   • BThe NAT ALG cannot inspect the contents of encrypted signaling messages.
   • CNAT ALG introduces jitter in the voice path.
   • DSource addresses cannot provide the destination addresses that remote endpoints should use for return packets.

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   Correct answer: B

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   • B100%

6. Question 6 of 25

   Which media encryption mode can be configured on an Expressway zone?

   • AAdvanced Encryption Standard
   • BIPsec
   • CTriple Data Encryption Standard
   • Dforce unencrypted

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   Correct answer: D

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   • D100%

7. Question 7 of 25

   What is the purpose of a transform in the Expressway server?

   • AA transform has the function as a neighbor zone in the Expressway. It creates a connection with another server.
   • BA transform changes the audio codec when the call goes through the Expressway.
   • CA transform is used to route calls to a destination.
   • DA transform changes an alias that matches certain criteria into another alias.

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   Correct answer: D

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   • D100%

8. Question 8 of 25

   Select 2

   What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)

   • AThe MRA license is missing on the Expressway-E.
   • BThe Unified Communications zone is down.
   • CTransform is not configured on Expressway-E.
   • DThe SRV record for _cisco-uds is misconfigured.
   • EThe firewall is blocking the port.

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   Correct answer: B, E

   How others answered

   • BE60%
   • DE40%

   Only 60% agreed on this answer — treat it as contested rather than settled.

9. Question 9 of 25

   Select 2

   An organization with a domain name of example.com. Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

   • A_sips._tcp.example.com
   • B_sips._udp.example.com
   • C_h323ls._udp.example com
   • D_h323ls._tcp.example.com
   • E_collab-edge._tls.example.com

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   Correct answer: A, C

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   • AC100%

10. Question 10 of 25

    What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

    • A1024
    • B2048
    • C4096
    • D8192

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    Correct answer: C

    How others answered

    • C100%

11. Question 11 of 25

    Select 2

    

    Refer to the exhibit. Which two numbers match the regular expression? (Choose two.)

    • Ad20d16d20d22
    • B2091652010224
    • C209165200225
    • Dd209d165d200d224
    • E209165200224

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    Correct answer: C, E

    How others answered

    • CE100%

12. Question 12 of 25

    A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally. For which reason would you see activity on the TURN server when a call is established between two external endpoints?

    • AThe video call is using encryption, which is not supported by ICE with CUCM 12.5
    • BICE cannot reduce the packet loss on the link
    • CA STUN cannot punch holes in the firewall
    • DThe video call is using 4K resolution, which is not supported by ICE with CUCM 12.5

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    Correct answer: C

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    • C100%

13. Question 13 of 25

    Which role does Call Policy play when preventing toll fraud on Expressways?

    • AIt controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.
    • BIt changes the calling and called number on a call.
    • CIt changes the audio protocol used by a call through Expressways.
    • DIt changes the audio codec used in a call through Expressways.

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    Correct answer: A

    How others answered

    • A100%

14. Question 14 of 25

    What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

    • AThe signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
    • BEncrypted IP traffic for collaboration devices always is trusted by the firewall.
    • CThe signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
    • DThe signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

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    Correct answer: C

    How others answered

    • C55%
    • A45%

    Only 55% agreed on this answer — treat it as contested rather than settled.

15. Question 15 of 25

    Which statement about scheduling Expressway backups is true?

    • AIt is not supported on the application.
    • BIt is allowed from the application CLI of the Expressway only.
    • CIt is allowed from the application CLI and GUI of the Expressway.
    • DIt is allowed from the application GUI of the Expressway only.

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    Correct answer: A

    How others answered

    • A100%

16. Question 16 of 25

    Select 2

    Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)

    • Aunsolicited notify
    • BRFC 2833
    • CKPML
    • Dpassthrough
    • EH.245 user input indication

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    Correct answer: B, E

    How others answered

    • BE100%

17. Question 17 of 25

    What allows endpoints behind a NAT to discover the paths through which they will pass media?

    • ARTP
    • BTLS
    • CSNMP
    • DICE

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    Correct answer: D

    How others answered

    • D100%

18. Question 18 of 25

    Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?

    • AOff
    • BBest Effort
    • CAuto
    • DForce Encrypted

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    Correct answer: C

    How others answered

    • C100%

19. Question 19 of 25

    Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?

    • Acall routing
    • Btraversal subzone
    • Ccall policy
    • Dsearch rule

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    Correct answer: D

    How others answered

    • D100%

20. Question 20 of 25

    Select 2

    Which two types of information does Cisco Expressway back up? (Choose two.)

    • Acall records
    • Blog files
    • CIP addresses
    • Dcurrent call states
    • Esecurity certificates

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    Correct answer: C, E

    How others answered

    • CE64%
    • AE36%

    Only 64% agreed on this answer — treat it as contested rather than settled.

21. Question 21 of 25

    Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?

    • Aconnection
    • Bname
    • Cversion
    • Dbandwidth

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    Correct answer: A

    How others answered

    • A100%

22. Question 22 of 25

    Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

    • AApplication layer gateway could be enabled to bridge the media traffic.
    • BA static NAT route could be added to the firewall to bridge the two networks.
    • CThe Expressway-E could be enabled for Dual-NIC capability.
    • DThe Expressway-E could be enabled for interworking.

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    Correct answer: C

    How others answered

    • C100%

23. Question 23 of 25

    

    Refer to the exhibit. What is the result of a transformation applied to alias 88514?

    • A[email protected]
    • B88513@ccnpcollab com
    • C[email protected]
    • D[email protected]

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    Correct answer: C

    How others answered

    • C100%

24. Question 24 of 25

    When configuring a Cisco Expressway solution and need to design the dial plan with various rules for URIs and numbers coming through the device. To do so, it is important that some dial plan rules are applied in a certain order. When configuring the transform section, you must know the range of the priorities. Which range is correct?

    • Aany number in the drop-down menu
    • Bany number in the dialog box
    • Cany number between 1-128
    • Dany number between 1-65534

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    Correct answer: D

    How others answered

    • D100%

25. Question 25 of 25

    Which zone is required on a B2B deployment between Expressway-C and Expressway-E?

    • Atraversal zone
    • BDNS zone
    • Cdefault zone
    • Dneighbor zone

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    Correct answer: A

    How others answered

    • A100%

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300-820 practice, question 1 of 25