Question: What is a necessary update when a new roaming agreement is established with a Bridge Certification Authority (Bridge CA) from an operator's perspective, assuming PKI product support?
Option 1: Update the Certificate Revocation List (CRL) for all involved parties
Option 2: Modify the encryption algorithms used for secure communication
Option 3: Update the name constraints in the certificate issued for the Bridge CA
Option 4: Renew the cross-certification with all previously agreed-upon operators
Explanation: When integrating a Bridge CA, especially in the context of new roaming agreements, ensuring the security and trust model is maintained is crucial. Updating the name constraints in the Bridge CA's certificate is necessary to reflect changes in trusted identities or domains due to the new agreement, thus maintaining the integrity of the authentication framework across different operators' networks.