1|Page
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
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,2|Page
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 -
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, 3|Page
✔✔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
When 3CX has been installed without an 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
"Inbound CID Reformatting" can be used to change
teh Caller ID name of an incoming call based on a
set of rules. - ✔✔ANSW✔✔False
iLovePDF
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
iLovePDF
,2|Page
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 -
iLovePDF
, 3|Page
✔✔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
When 3CX has been installed without an 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
"Inbound CID Reformatting" can be used to change
teh Caller ID name of an incoming call based on a
set of rules. - ✔✔ANSW✔✔False
iLovePDF
