What will a router do if it cannot determine where to forward an incoming packet?

What will a router do if it cannot determine where to forward an incoming packet?

• The router will drop it.
• The router will forward it out all interfaces.
• The router will save it in the sending queue and try to forward it again later.
• The router will send an incident message to the network administrator.

Explanation: A router contains a routing table of all locally connected networks and the interfaces that connect to them. The routing tables can also contain the routes that the router uses to reach remote networks. Entries can be made to the routing table in two ways: the table can be dynamically updated by information received from other routers in the network by using a routing protocol, or entries can be manually entered by a network administrator. If the router cannot determine where to forward a packet, it will drop it.

Exam with this question: 7.4.2 Module 7 - Routing Between Networks Quiz