What term describes a collection of IP networks under a single organization's control that presents a common routing policy to the internet?

What term describes a collection of IP networks under a single organization's control that presents a common routing policy to the internet?

• A. Switch
• B. MAC Address Table
• C. NAT Network Address Translation
• D. Autonomous System

Answer: (D)

An Autonomous System is a collection of IP networks under a single administration that presents a common routing policy to the Internet. Each AS uses an ASN to identify itself and runs BGP to exchange route information with other ASes, giving the organization control over how its traffic enters and leaves its networks and how routes are advertised. This external routing policy is what differentiates an AS from a simple local network concept. In contrast, a switch is a Layer 2 device that forwards frames within a LAN using MAC addresses, a MAC address table is the switch’s map of MACs to ports, and NAT translates private addresses to public ones at the network edge, not describing a grouped set of networks with a unified internet-facing routing policy.

An Autonomous System is a collection of IP networks under a single administration that presents a common routing policy to the Internet. Each AS uses an ASN to identify itself and runs BGP to exchange route information with other ASes, giving the organization control over how its traffic enters and leaves its networks and how routes are advertised. This external routing policy is what differentiates an AS from a simple local network concept. In contrast, a switch is a Layer 2 device that forwards frames within a LAN using MAC addresses, a MAC address table is the switch’s map of MACs to ports, and NAT translates private addresses to public ones at the network edge, not describing a grouped set of networks with a unified internet-facing routing policy.