3CX Academy, Advanced Certification
with correct questions and detailed
answers 2025 verified
The 3CX SIP port should be filtered by firewall
ACL rules to maximize security and allow only
trusted IPs to reach it (VoIP providers or STUN
extensions if any). - ✔✔ANSW✔✔True
,The default Blacklist time interval is of 1800
minutes. - ✔✔ANSW✔✔True
The default Voicemail PIN of an extension
consist of
4 random alphanumerical characters. -
✔✔ANSW✔✔False
The default Voicemail PIN of an extension
consist of
4 random alphanumerical characters. -
✔✔ANSW✔✔False
The log files of 3CX are never cleaned even
when you restart the 3CX Services -
✔✔ANSW✔✔False
, The numbering plan of bridged systems must
be different in order for outgoing calls to the
bridge to
work - ✔✔ANSW✔✔False
The order of "Inbound Rules" is not important
when you have DID and CID "Inbound Rules",
CIDs always have higher priority. -
✔✔ANSW✔✔False
The Virtual Extension of the slave must match
the master side virtual extension number -
✔✔ANSW✔✔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. -
✔✔ANSW✔✔True
with correct questions and detailed
answers 2025 verified
The 3CX SIP port should be filtered by firewall
ACL rules to maximize security and allow only
trusted IPs to reach it (VoIP providers or STUN
extensions if any). - ✔✔ANSW✔✔True
,The default Blacklist time interval is of 1800
minutes. - ✔✔ANSW✔✔True
The default Voicemail PIN of an extension
consist of
4 random alphanumerical characters. -
✔✔ANSW✔✔False
The default Voicemail PIN of an extension
consist of
4 random alphanumerical characters. -
✔✔ANSW✔✔False
The log files of 3CX are never cleaned even
when you restart the 3CX Services -
✔✔ANSW✔✔False
, The numbering plan of bridged systems must
be different in order for outgoing calls to the
bridge to
work - ✔✔ANSW✔✔False
The order of "Inbound Rules" is not important
when you have DID and CID "Inbound Rules",
CIDs always have higher priority. -
✔✔ANSW✔✔False
The Virtual Extension of the slave must match
the master side virtual extension number -
✔✔ANSW✔✔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. -
✔✔ANSW✔✔True
