3CX ACADEMY ADVANCED CERTIFICATION STUDY
EXAMS GUIDE QUESTIONS AND ANSWERS SURE A+
✔✔Setting a Name when creating a "CID Inbound Rule" is mandatory - ✔✔False
✔✔When the option "Remote PBX uses SBC/Tunnel Connection" is enabled on the
master bridge, the Slabe bridge must be registered behind the SBC. - ✔✔False
✔✔You can take a phone that has already been provisioned with RPS as remote STUN
Extension and configure it as a Local LAN extension, as long as 2 weeks have passed
since the phone was provisioned as a STUN extension - ✔✔False
✔✔You have run the 3CX "Firewall Checker" and comes up as Green, but you still have
audio issues and calls dropping on on outbound / inbound calls. Can SIP ALG be the
culprit? - ✔✔True
✔✔Remote presence of a bridged system is available in both IP Phones (via BLF) and
the 3CX Phone for Windows - ✔✔False
✔✔The numbering plan of bridged systems must be different in order for outgoing calls
to the bridge to work - ✔✔False
, ✔✔ZRTP and SRTP are both supported to secure the audio stream of calls within the
3CX Phone System. - ✔✔False
✔✔The 3CX Instance Manager is available for 3CX v16+ installs on what Operating
System? - ✔✔Linux x86 with no failover or hosting mode enabled
✔✔The 3CX Instance Manager allows you to perform batch updates - ✔✔True
✔✔In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
separated values will allow multiple extension ranges to be defined - ✔✔True
✔✔The Virtual Extension of the slave must match the master side virtual extension
number - ✔✔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. - ✔✔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. - ✔✔False
✔✔Wireshark can - without any additional Plugins Decode all Codecs including G711A,
G711U, GSM, G729, G726 - ✔✔False
✔✔STUN extensions can be configured to connect to the tunnel port of 3CX instead of
the SIP port for more security. - ✔✔False
✔✔The log files of 3CX are never cleaned even when you restart the 3CX Services -
✔✔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. -
✔✔False
✔✔Remote extensions may be provisioned using the HTTP or HTTPS URLs - ✔✔False
✔✔The default Voicemail PIN of an extension consist of 4 random alphanumerical
characters. - ✔✔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" - ✔✔
EXAMS GUIDE QUESTIONS AND ANSWERS SURE A+
✔✔Setting a Name when creating a "CID Inbound Rule" is mandatory - ✔✔False
✔✔When the option "Remote PBX uses SBC/Tunnel Connection" is enabled on the
master bridge, the Slabe bridge must be registered behind the SBC. - ✔✔False
✔✔You can take a phone that has already been provisioned with RPS as remote STUN
Extension and configure it as a Local LAN extension, as long as 2 weeks have passed
since the phone was provisioned as a STUN extension - ✔✔False
✔✔You have run the 3CX "Firewall Checker" and comes up as Green, but you still have
audio issues and calls dropping on on outbound / inbound calls. Can SIP ALG be the
culprit? - ✔✔True
✔✔Remote presence of a bridged system is available in both IP Phones (via BLF) and
the 3CX Phone for Windows - ✔✔False
✔✔The numbering plan of bridged systems must be different in order for outgoing calls
to the bridge to work - ✔✔False
, ✔✔ZRTP and SRTP are both supported to secure the audio stream of calls within the
3CX Phone System. - ✔✔False
✔✔The 3CX Instance Manager is available for 3CX v16+ installs on what Operating
System? - ✔✔Linux x86 with no failover or hosting mode enabled
✔✔The 3CX Instance Manager allows you to perform batch updates - ✔✔True
✔✔In the criteria of the "Outbound Rules", "Calls from Extension(s)" having comma
separated values will allow multiple extension ranges to be defined - ✔✔True
✔✔The Virtual Extension of the slave must match the master side virtual extension
number - ✔✔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. - ✔✔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. - ✔✔False
✔✔Wireshark can - without any additional Plugins Decode all Codecs including G711A,
G711U, GSM, G729, G726 - ✔✔False
✔✔STUN extensions can be configured to connect to the tunnel port of 3CX instead of
the SIP port for more security. - ✔✔False
✔✔The log files of 3CX are never cleaned even when you restart the 3CX Services -
✔✔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. -
✔✔False
✔✔Remote extensions may be provisioned using the HTTP or HTTPS URLs - ✔✔False
✔✔The default Voicemail PIN of an extension consist of 4 random alphanumerical
characters. - ✔✔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" - ✔✔
