A. uses a default IOS metric of 10 on each interface
B. uses an on - demand circuit to reduce the hello and LSA flooding across switched WAN li nks,such as ISDN
C. uses a DIS and a backup DIS to present the psuedo - node on the LAN
D. encapsulates PDUs directly into a data - link frame
E. uses stubby areas to improve network scalability
F. runs PRC (Partial Route Calculations) to calculate IP re achability information

A. BGP requires redundant TCP sessions between iBGP peers.
B. Routes learned via eBGP are never propagated to other iBGP peers.
C. A full mesh allows for optimal routing within the Transit AS.
D. Routes learned via iBGP are never propagated to other eBGP peers.
E. Routes learned via iBGP are never propagated t o other iBGP peers.