No, it can't have more than one active default gateway. Any operating system can have multiple default gateways configured (technically a route to the unspecified address, i.e. 0.0. 0.0 or :: ). In that event, it does what it would do for any route destination with multiple paths.

What happens if you have two default gateways?

When multiple default gateways are used in TCP/IP configuration options on a Windows NT computer, connectivity to computers on remote networks may be lost. On multihomed computers connected to disjointed networks, static routes may be added to the routing table to get connectivity to remote networks.

Can you have two default gateways Cisco?

With having multiple default routes you can load-balance the traffic ( session lb ). If you want to keep one of the paths as backup , then you need to play with metric. Give a higher metric to the path you wanna use as backup and smaller metric to the main one.