A subnet has a route table with these user-defined routes: 10.10.0.0/16 to Virtual appliance, 10.10.5.0/24 to Virtual network gateway, and 10.10.5.128/25 to Virtual network. The subnet is attached to a VM that sends traffic to several destinations. Which three next-hop decisions are correct? Select three.

Traffic to 10.10.5.9 uses Virtual appliance.

A more specific /24 route exists, so the broader /16 next hop is not chosen.

Traffic to 8.8.8.8 uses Virtual appliance.

No 10.10.x.x route matches 8.8.8.8, so the default system route would apply instead.

What does this AZ-104 question test?

CIDR notation defines the prefix length.

What is the correct answer to this question?

The correct answer is: Traffic to 10.10.5.9 uses Virtual network gateway. — Azure uses longest-prefix match when selecting a route. For 10.10.5.9, the /24 route is more specific than /16 and sends traffic to the virtual network gateway. For 10.10.5.200, the /25 route is the most specific and stays within the virtual network next hop. For 10.10.8.4, only the /16 route matches, so traffic goes to the virtual appliance. This tests route precedence rather than simple route presence. Why others are wrong: The /16 route is only used when no more specific prefix matches, so it does not win for 10.10.5.9. Traffic to 8.8.8.8 does not match any of the listed 10.10.x.x routes, so the default system route would be used, not the appliance. These mistakes are common when people look at the table without applying longest-prefix logic.

What should I do if I get this AZ-104 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.