3CX Academy, Advanced Certification
Exam Questions With Correct Answers
In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
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separated values will allow multiple extension ranges to be defined - CORRECT
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ANSWER✔✔-True
The Virtual Extension of the slave must match the master side virtual extension
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number - CORRECT ANSWER✔✔-True
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For extensions that are registered over multiple site-to-site VPNs, by default 3CX
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delivers the audio between phones if they are on different subnets. - CORRECT
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ANSWER✔✔-False
On outbound calls to external numbers, 3CX will process "Outbound Rules" in a
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"Best Matching" way, depending on how many of the criteria match. - CORRECT
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ANSWER✔✔-False
Wireshark can - without any additional Plugins Decode all Codecs including
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G711A, G711U, GSM, G729, G726 - CORRECT ANSWER✔✔-False
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STUN extensions can be configured to connect to the tunnel port of 3CX instead
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of the SIP port for more security. - CORRECT ANSWER✔✔-False
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The log files of 3CX are never cleaned even when you restart the 3CX Services -
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CORRECT ANSWER✔✔-False |
, Once Secure SIP has been configured in 3CX, Secure SIP certificates will need to
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be deployed manually in phones and softphones OS so that they can
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communicate. - CORRECT ANSWER✔✔-False | | |
Remote extensions may be provisioned using the HTTP or HTTPS URLs - CORRECT
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ANSWER✔✔-False
The default Voicemail PIN of an extension consist of 4 random alphanumerical
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characters. - CORRECT ANSWER✔✔-False | | |
Your 3CX has only one SIP Trunk and receives a call from number 8135791691. If
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you have a "Inbound CID Reformatting" rule on the Trunk with "Source Pattern"
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813(...)(.*) and "Replace Pattern" \1\2, the extension that receives the call will
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see "5791691" as the caller ID on its display. - CORRECT ANSWER✔✔-True
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When 3CX has been installed without a FQDN from 3CX and in split DNS mode,
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the DNS server must not be installed on the same machine as the phone system.
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- CORRECT ANSWER✔✔-True
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Your Local IP Phone loses the registration to 3CX and you want do troubleshoot
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the issue. You should start a Wireshark Capture on the 3CX Server, reboot the
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phone, and then apply the Filter sip.Cseq.Method==REGISTER in order to see if
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registrations are reaching 3CX - CORRECT ANSWER✔✔-True | | | | | |
Your 3CX has only one SIP Trunk and receives a call from number 422033272020
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and you want it to be presented on the extension display as +44272020. You can
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Exam Questions With Correct Answers
In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
| | | | | | | | | | | |
separated values will allow multiple extension ranges to be defined - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-True
The Virtual Extension of the slave must match the master side virtual extension
| | | | | | | | | | | | |
number - CORRECT 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. - CORRECT
| | | | | | | | | | | | |
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. - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-False
Wireshark can - without any additional Plugins Decode all Codecs including
| | | | | | | | | | |
G711A, G711U, GSM, G729, G726 - CORRECT ANSWER✔✔-False
| | | | | | |
STUN extensions can be configured to connect to the tunnel port of 3CX instead
| | | | | | | | | | | | | |
of the SIP port for more security. - CORRECT ANSWER✔✔-False
| | | | | | | | |
The log files of 3CX are never cleaned even when you restart the 3CX Services -
| | | | | | | | | | | | | | | |
CORRECT 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. - CORRECT ANSWER✔✔-False | | |
Remote extensions may be provisioned using the HTTP or HTTPS URLs - CORRECT
| | | | | | | | | | | | |
ANSWER✔✔-False
The default Voicemail PIN of an extension consist of 4 random alphanumerical
| | | | | | | | | | | |
characters. - CORRECT 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. - CORRECT 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.
| | | | | | | | | | | | | |
- CORRECT 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 - CORRECT 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
| | | | | | | | | | | | | | |
