Question: In a telecom network, when a Management and Network Services (MnS) consumer accesses an MnS producer through Transport Layer Security (TLS), how does the MnS consumer typically authenticate the MnS producer?
Option 1: By validating the signature signed with the certificate of the MnS producer issued by a trusted Certificate Authority (CA)
Option 2: Through explicit authentication with the Authentication Service Producer before accessing the MnS producer
Option 3: Using a pre-shared key exchanged during initial network setup
Option 4: By direct IP address verification to ensure authenticity
Explanation: In telecom networks, especially in scenarios involving secure connections like TLS, authentication of one service by another often relies on cryptographic certificates issued by trusted Certificate Authorities (CAs). The MnS consumer verifies the MnS producer's identity by checking the certificate's validity and ensuring it was issued by a trusted CA, confirming the authenticity of the MnS producer.