3CX Advanced Certification 2023/ 2024 Exam| Questions and Verified Answers| A Grade

3CX Advanced Certification 2023/ 2024 Exam| Questions and Verified Answers| A Grade Q: The order of "Inbound Rules" is not important when you have DID and CID "Inbound Rules", CIDs always have higher priority. Answer: False Q: You have a Master Bridge with 3-digit extensions 1xxx and a Slave Bridge with 4-digit extensions 2xxx. In the "Outbound Rules" you use to rote calls across the bridge, using a prefix is mandatory. Answer: False Q: 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? Answer: True Q: An extension will be allowed up to 25 attempts (default) for authenticating successfully, after what it will be blacklisted for the default blacklisting interval of 1800 minutes. Answer: False Q: 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). Answer: True Q: SRTP will secure calls so that a middle-man can't see the SIP traffic in plain-text. Answer: False Q: CID and DID "Inbound Rules" can both be configured to route calls differently depending on the Office Hours. Answer: True Q: "Prepend" will add digits to the end of the dialed number before sending hte call to the destination defined in the "Route" Answer: False Q: 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==SUBSCRIBE in order to see if registrations are reaching 3CX. Answer: False