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3CX Academy, Advanced Certification Exam Study Guide Solutions
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3CX Academy, Advanced Certification Exam Study Guide Solutions In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma separated values will allow multiple extension ranges to be defined - ANSWER-True The Virtual Extension of the slave must match the master side virtual ...

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  • November 2, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • 3cx academy advanced certification exam study gui

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KaylinHoffman

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Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024




3CX Academy, Advanced Certification

Exam Study Guide Solutions


In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma separated values will

allow multiple extension ranges to be defined - ANSWER✔✔-True


The Virtual Extension of the slave must match the master side virtual extension number - ANSWER✔✔-

True


For extensions that are registered over multiple site-to-site VPNs, by default 3CX delivers the audio

between phones if they are on different subnets. - ANSWER✔✔-False


On outbound calls to external numbers, 3CX will process "Outbound Rules" in a "Best Matching" way,

depending on how many of the criteria match. - ANSWER✔✔-False


Wireshark can - without any additional Plugins Decode all Codecs including G711A, G711U, GSM, G729,

G726 - ANSWER✔✔-False


STUN extensions can be configured to connect to the tunnel port of 3CX instead of the SIP port for more

security. - ANSWER✔✔-False


The log files of 3CX are never cleaned even when you restart the 3CX Services - ANSWER✔✔-False


Once Secure SIP has been configured in 3CX, Secure SIP certificates will need to be deployed manually in

phones and softphones OS so that they can communicate. - ANSWER✔✔-False


Remote extensions may be provisioned using the HTTP or HTTPS URLs - ANSWER✔✔-False


Copyright ©Stuvia International BV 2010-2024 Page 1/7

, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024


The default Voicemail PIN of an extension consist of 4 random alphanumerical characters. -

ANSWER✔✔-False


Your 3CX has only one SIP Trunk and receives a call from number 8135791691. If you have a "Inbound

CID Reformatting" rule on the Trunk with "Source Pattern" 813(...)(.*) and "Replace Pattern" \1\2, the

extension that receives the call will see "5791691" as the caller ID on its display. - ANSWER✔✔-True


When 3CX has been installed without a FQDN from 3CX and in split DNS mode, the DNS server must not

be installed on the same machine as the phone system. - ANSWER✔✔-True


Your Local IP Phone loses the registration to 3CX and you want do troubleshoot the issue. You should

start a Wireshark Capture on the 3CX Server, reboot the phone, and then apply the Filter

sip.Cseq.Method==REGISTER in order to see if registrations are reaching 3CX - ANSWER✔✔-True


Your 3CX has only one SIP Trunk and receives a call from number 422033272020 and you want it to be

presented on the extension display as +44272020. You can do this with a "Inbound CID Reformatting"

rule on the Trunk with "Source Pattern" 44(..)(..)(.*) and "Replace Pattern" +44\3. - ANSWER✔✔-True


When selecting the option "I need a 3CX FQDN" an internal DNS is not mandatory - ANSWER✔✔-True


The order of "Inbound Rules" is not important when you have DID and CID "Inbound Rules", CIDs always

have higher priority. - ANSWER✔✔-False


You have a Master Bridge with 3-digit extensions 1xxx and a Slave Bridge with 4-digit extensions 2xxx. In

the "Outbound Rules" you use to rote calls across the bridge, using a prefix is mandatory. - ANSWER✔✔-

False


You have run the 3CX "Firewall Checker" and comes up as Green, but you still have audio issues and calls

dropping on on outbound / inbound calls. Can SIP ALG be the culprit? - ANSWER✔✔-True


Copyright ©Stuvia International BV 2010-2024 Page 2/7

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