In linguistics and grammar, a pronoun is a word that substitutes for a noun or noun phrase. It is a particular case of a pro-form.
IP Routing is an umbrella term for the set of protocols that determine the path that data follows in order to travel across multiple networks from its source to its destination. Data is routed from its source to its destination through a series of routers, and across multiple networks.
A. The ip default-gateway command is used when IP routing is disabled on the router. However, ip default-network and ip route 0.0.0.0/0 are effective when IP routing is enabled on the router and they are used to route any packets which do not have an exact route match in the routing table.