What type of logic do routing rules use?

• A. Or
• B. And
• C. Not
• D. Xor

Answer: (B)

Routing rules use a logical AND, meaning a match happens only when all required conditions are true. In routing, decisions hinge on multiple attributes—such as source and destination, protocol, port, and sometimes time or other headers. A rule should apply only if every specified condition is satisfied; otherwise the packet follows a different path or is blocked. If OR were used, the rule would fire whenever any single criterion is met, making matches too broad. NOT would only exclude something, and XOR would require exactly one condition to be true, which doesn’t fit how routes are determined because you typically need several attributes to identify the correct route.