A/An ________ policy defines a standard to handle application traffic, such as web or email.

The policy that defines a standard to handle application traffic, such as web or email, is the firewall-management policy. Firewall-management policies are crucial in controlling incoming and outgoing network traffic based on predetermined security rules. These policies dictate how application traffic is filtered, monitored, and allowed or denied, ensuring that only legitimate and safe data packets can access the network or specific applications.

Such a policy encompasses the configuration, management, and implementation of firewalls, which serve as barriers between a trusted network and untrusted networks. This is vital for protecting sensitive data and ensuring compliance with various security standards.

Other options, such as network-connection and remote-access policies, focus on the rules for establishing network connections or stipulating how users gain access to the network remotely. Access-control policies define who is allowed to access specific resources within a network but do not specifically address the handling of application traffic like a firewall-management policy does.