3cx Basic Certification Test | 30 Questions with 100% Correct Answers | Verified | Latest Update
Question: 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
Question: The Virtual Extension of the slave must match the
master side virtual extension number
Correct answer: True
Question: 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
Question: 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
Question: Wireshark can - without any additional Plugins
Decode all Codecs including G711A, G711U, GSM, G729, G726
Correct answer: False
Question: STUN extensions can be configured to connect to
the tunnel port of 3CX instead of the SIP port for more security.
Correct answer: False
Question: The log files of 3CX are never cleaned even when
you restart the 3CX Services
Correct answer: False
Question: 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
Question: Remote extensions may be provisioned using the
HTTP or HTTPS URLs
Correct answer: False
Question: The default Voicemail PIN of an extension consist
of 4 random alphanumerical characters.
Correct answer: False
Question: 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
Question: 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
Question: Your Local IP Phone loses the registration to 3CX
and you want to 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
Question: 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.
Correct answer: True
Question: When selecting the option "I need a 3CX FQDN"
an internal DNS is not mandatory