Differentiate between static routing and dynamic routing, and name a common dynamic routing protocol.

Differentiate between static routing and dynamic routing, and name a common dynamic routing protocol.

• A. Dynamic routing uses manual routes; static routing learns routes automatically.
• B. OSPF is a type of DHCP.
• C. Static routing requires a border gateway.
• D. Static routing uses manual routes; dynamic routing learns routes automatically; common protocol: OSPF.

Answer: (D)

Static routing is about manual control: you configure the exact paths to reach remote networks in the router’s table, and those paths stay the same unless you edit them. It’s predictable and simple, which makes it reliable for small networks or fixed, stable connections, but it doesn’t automatically adapt if a link goes down or if traffic patterns change. Dynamic routing, in contrast, uses protocols that automatically discover and maintain routes. Routers exchange information about which networks are reachable and how best to get there, and they adjust routes when the network changes. This automatic learning and adaptation is what makes dynamic routing scalable and resilient for larger or more variable networks. A common dynamic routing protocol is OSPF, which is widely used in many networks. OSPF uses a link-state approach and builds a map of the network to compute the best paths, supporting large, complex designs and fast convergence. Why the other statements don’t fit: dynamic routing isn’t based on manual routes, so saying it uses manual routes is opposite of how it works. OSPF is a routing protocol, not DHCP, which assigns IP addresses. Static routing doesn’t require a border gateway; a border gateway (and protocols like BGP) serve different inter-network purposes, especially between large networks or different administrative domains.

Static routing is about manual control: you configure the exact paths to reach remote networks in the router’s table, and those paths stay the same unless you edit them. It’s predictable and simple, which makes it reliable for small networks or fixed, stable connections, but it doesn’t automatically adapt if a link goes down or if traffic patterns change.

Dynamic routing, in contrast, uses protocols that automatically discover and maintain routes. Routers exchange information about which networks are reachable and how best to get there, and they adjust routes when the network changes. This automatic learning and adaptation is what makes dynamic routing scalable and resilient for larger or more variable networks.

A common dynamic routing protocol is OSPF, which is widely used in many networks. OSPF uses a link-state approach and builds a map of the network to compute the best paths, supporting large, complex designs and fast convergence.

Why the other statements don’t fit: dynamic routing isn’t based on manual routes, so saying it uses manual routes is opposite of how it works. OSPF is a routing protocol, not DHCP, which assigns IP addresses. Static routing doesn’t require a border gateway; a border gateway (and protocols like BGP) serve different inter-network purposes, especially between large networks or different administrative domains.