3CX BASIC LATEST 2026 STUDY GUIDE QUESTIONS AND
ANSWERS GRADED A+
✔✔RFC Compliant Internal Network (Required by 3CX) - ✔✔10.x.x.x, 172.16.x.x-
172.31.x.x, and 192.168.x.x
✔✔(T/F) It is recommended to leave unused network interfaces/adapters enabled on
your 3CX server. - ✔✔FALSE
✔✔(T/F) It is recommended to disable unused network interfaces/adapters on your 3CX
server. - ✔✔TRUE
✔✔(T/F) It is recommended to use a wired connection on your 3CX server. - ✔✔TRUE
✔✔(T/F) It is recommended to use either a wired or wireless connection on your 3CX
server. - ✔✔FALSE
✔✔(Y/N) Is Microsoft Internet Explorer a supported browser to access and operate the
3CX Management Console? - ✔✔No
✔✔(Y/N) I reinstall 3CX and I would like to change the 3CX FQDN. Is it possible to
unbind the key-FQDN mapping myself? - ✔✔Yes
https://www.3cx.com/docs/key-already-bound/
✔✔(Y/N) Is the port range UDP:9000-9500 used for VoIP Providers to deliver/receive
audio but not for delivering audio to local IP phones? - ✔✔Yes?
https://www.3cx.com/docs/manual/firewall-router-configuration/
✔✔(T/F) Configuring inbound rules for DIDs allows you to define different destinations
based on the time of day. - ✔✔TRUE
https://www.3cx.com/docs/manual/inbound-did-call-routing/#h.kp49xtr98uu1
✔✔(Y/N) Two networks are connected via a firewall. A phone connected to network A
will automatically show on the 3CX "Phones" page when 3CX is in network B assuming
that all traffic is allowed to pass between both networks? - ✔✔Yes?
https://www.3cx.com/community/threads/3cx-with-multiple-local-subnets.51758/
✔✔(T/F) CTI allows you to control a supported IP Phone by performing operations like
dialing a number, placing an active call on hold, and more. - ✔✔TBD
ANSWERS GRADED A+
✔✔RFC Compliant Internal Network (Required by 3CX) - ✔✔10.x.x.x, 172.16.x.x-
172.31.x.x, and 192.168.x.x
✔✔(T/F) It is recommended to leave unused network interfaces/adapters enabled on
your 3CX server. - ✔✔FALSE
✔✔(T/F) It is recommended to disable unused network interfaces/adapters on your 3CX
server. - ✔✔TRUE
✔✔(T/F) It is recommended to use a wired connection on your 3CX server. - ✔✔TRUE
✔✔(T/F) It is recommended to use either a wired or wireless connection on your 3CX
server. - ✔✔FALSE
✔✔(Y/N) Is Microsoft Internet Explorer a supported browser to access and operate the
3CX Management Console? - ✔✔No
✔✔(Y/N) I reinstall 3CX and I would like to change the 3CX FQDN. Is it possible to
unbind the key-FQDN mapping myself? - ✔✔Yes
https://www.3cx.com/docs/key-already-bound/
✔✔(Y/N) Is the port range UDP:9000-9500 used for VoIP Providers to deliver/receive
audio but not for delivering audio to local IP phones? - ✔✔Yes?
https://www.3cx.com/docs/manual/firewall-router-configuration/
✔✔(T/F) Configuring inbound rules for DIDs allows you to define different destinations
based on the time of day. - ✔✔TRUE
https://www.3cx.com/docs/manual/inbound-did-call-routing/#h.kp49xtr98uu1
✔✔(Y/N) Two networks are connected via a firewall. A phone connected to network A
will automatically show on the 3CX "Phones" page when 3CX is in network B assuming
that all traffic is allowed to pass between both networks? - ✔✔Yes?
https://www.3cx.com/community/threads/3cx-with-multiple-local-subnets.51758/
✔✔(T/F) CTI allows you to control a supported IP Phone by performing operations like
dialing a number, placing an active call on hold, and more. - ✔✔TBD
