An organization with a domain name of example.com.
Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)
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A. B. C. D. E.AC.
SRV (Service) records are used to locate specific services such as SIP, H.323, or other services in a domain. They help in identifying the location of the service and the protocol to be used for communication. In this scenario, the organization has a domain name of example.com and needs to create two valid SRV records for SIP and H.323 communication.
The two valid SRV records for SIP and H.323 communication are:
A. _sips._tcp.example.com D. _h323ls._tcp.example.com
Explanation:
A. _sips._tcp.example.com: This SRV record is valid for SIP communication over a TCP connection. The '_sips' prefix indicates that the communication is secure and encrypted using TLS. The '_tcp' suffix indicates that the protocol used is TCP. Therefore, this SRV record is used for secure SIP communication over TCP.
B. _sips._udp.example.com: This SRV record is not valid as SIP communication over UDP is not secure.
C. _h323ls._udp.example.com: This SRV record is not valid for H.323 communication as it specifies the use of UDP. H.323 typically uses TCP as the transport protocol for signaling messages.
D. _h323ls._tcp.example.com: This SRV record is valid for H.323 communication over TCP. The '_h323ls' prefix indicates that the communication is secure and encrypted using TLS. The '_tcp' suffix indicates that the protocol used is TCP. Therefore, this SRV record is used for secure H.323 communication over TCP.
E. _collab-edge._tls.example.com: This SRV record is not valid for either SIP or H.323 communication. It is used for locating Cisco Collaboration Edge services for mobile and remote access.