Which Application Flow Criteria would be used identify traffic based only on a source address?

• A. Destination address
• B. Source address
• C. Destination port
• D. Protocol type

Answer: (B)

Matching traffic by the source address means you classify packets strictly by where they originate. In application flow criteria, you can pick fields like source address, destination address, destination port, and protocol type to define how traffic is grouped into flows. If the goal is to identify traffic using only the origin, the source address is the appropriate criterion because it ties the flow to a specific source IP or subnet, regardless of where the traffic is going or what service it’s using. This is useful for applying policies that should affect all traffic from a particular site or host. In contrast, using the destination address would group traffic by its destination, the destination port by the service, and the protocol type by the transport protocol, which wouldn’t meet the “only by source origin” requirement.