3CX ADVANCED CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS GUARANTEED PASS
ALREADY GRADED A+ NEWEST UPDATE 2024
If you want to check the internal PBX routing of a call, the most reliable way is through the use of the
Binary Log Viewer, or which you must know some information about the call you are investigating, like
the Caller ID, the time of the call, etc.
True
Assume the following scenario: 3CX is connected via a site-to-site VPN with two different buildings
where remote phones have been provisioned. 3CX is on network 192.168.9.xxx, Phones on location A
are on network 192.168.3.xxx, Phones on location B are on network 192.168.8.xxx. When a call is
established, between an extension on remote location A to an extension to remote location B, by
default 3CX will proxy the SIP and audio traffic and send it to the extensions
True
Assume the following scenario: 2 Phone Systems bridged over a site-to-site VPN connection. Phone
system A on network 192.168.9.xxx, Phone System B on network 192.168.3.xxx. The options "Supports
Re-Invite" and "Supports Re-places" are enabled on the bridge settings. When a call is established
between an extension from PBX A to an extension behind PBX B, the audio will be exchanged directly
between the 2 extensions.
False
When an established call from your local extension to an external number is terminated from your IP
Phone you should see a BYE being send in from the Provider / PSTN gateway, towards your PBX IP
address in wireshark
False
, 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
True
A TLS certificate and key will have to be imported into 3CX so taht SRTP can be used.
False
You cannot create multiple CID "Inbound Rules" and associate them with different SIP Trunks you have
in 3CX.
False
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).
True
SRTP will secure calls so that a middle-man can't see the SIP traffic in plain-text.
False
If a caller enters the PIN of the voicemail of an extension incorrectly 3 times, the specific voice mail
account gets blocked for 2 minutes.
False
The default Blacklist time interval is of 1800 minutes.
AND VERIFIED ANSWERS GUARANTEED PASS
ALREADY GRADED A+ NEWEST UPDATE 2024
If you want to check the internal PBX routing of a call, the most reliable way is through the use of the
Binary Log Viewer, or which you must know some information about the call you are investigating, like
the Caller ID, the time of the call, etc.
True
Assume the following scenario: 3CX is connected via a site-to-site VPN with two different buildings
where remote phones have been provisioned. 3CX is on network 192.168.9.xxx, Phones on location A
are on network 192.168.3.xxx, Phones on location B are on network 192.168.8.xxx. When a call is
established, between an extension on remote location A to an extension to remote location B, by
default 3CX will proxy the SIP and audio traffic and send it to the extensions
True
Assume the following scenario: 2 Phone Systems bridged over a site-to-site VPN connection. Phone
system A on network 192.168.9.xxx, Phone System B on network 192.168.3.xxx. The options "Supports
Re-Invite" and "Supports Re-places" are enabled on the bridge settings. When a call is established
between an extension from PBX A to an extension behind PBX B, the audio will be exchanged directly
between the 2 extensions.
False
When an established call from your local extension to an external number is terminated from your IP
Phone you should see a BYE being send in from the Provider / PSTN gateway, towards your PBX IP
address in wireshark
False
, 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
True
A TLS certificate and key will have to be imported into 3CX so taht SRTP can be used.
False
You cannot create multiple CID "Inbound Rules" and associate them with different SIP Trunks you have
in 3CX.
False
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).
True
SRTP will secure calls so that a middle-man can't see the SIP traffic in plain-text.
False
If a caller enters the PIN of the voicemail of an extension incorrectly 3 times, the specific voice mail
account gets blocked for 2 minutes.
False
The default Blacklist time interval is of 1800 minutes.
