An organization requires a second technician to verify changes before applying them to network devices. When
checking the configuration of a network device, a technician determines that a coworker has improperly
configured the AS number on the device. This would result in which of the following?

A.
The OSPF not-so-stubby area is misconfigured

B.
Reduced wireless network coverage

C.
Spanning tree ports in flooding mode

D.
BGP routing issues

Explanation:
BGP (Border Gateway Protocol) is used to route data between autonomous systems (AS’s)
A collection of networks that fall within the same administrative domain is called an autonomous system (AS).
The routers within an AS use an interior gateway protocol, such as the Routing Information Protocol (RIP) or
the Open Shortest Path First (OSPF) protocol, to exchange routing information among themselves. At the
edges of an AS are routers that communicate with the other AS’s on the Internet, using an exterior gateway
protocol such as the Border Gateway Protocol (BGP).