Dynamic Routing III: OSPF in Depth and Introduction to BGP

How is OSPF cost calculated by default?

Why is `auto-cost reference-bandwidth 10000` recommended on Gigabit+ networks?

In the OSPF network statement `network 192.168.1.0 0.0.0.255 area 0`, what is 0.0.0.255?

Which OSPF route code indicates a route learned from another area via an ABR?

Which OSPF neighbour state indicates the LSDB is synchronised and the adjacency is complete?

Which transport and port does BGP use?

Which BGP path attribute is used for loop detection?

What are the administrative distances of eBGP and iBGP?

What administrative distance value means 'Unknown', so the route is never used?

How many usable IPv4 hosts does a subnet with prefix length /27 provide?

An OSPF passive interface suppresses OSPF Hello packets on that interface.

An O E1 external route adds the internal cost of reaching the ASBR, while O E2 uses a fixed cost.

In BGP, a lower Local Preference value is preferred for outbound path selection.

In eBGP, TTL = 1 by default, and `ebgp-multihop` is used for more.

iBGP requires either a full mesh of peers or route reflectors.

eBGP automatically prepends the local AS number to the AS-Path attribute.

BGP is best understood as an alternative to OSPF or EIGRP inside an enterprise network.

BGP is the primary routing protocol used within an Autonomous System.

For a multi-vendor network, OSPF is the natural choice because it is an open standard.

802.1D STP converges in seconds, while RSTP takes 30–50 seconds.

Match each OSPF route code with its meaning.

Match each BGP concept with its description.

Match each protocol with its administrative distance.

Match each protocol with its type and metric.

Match each scenario with the protocol the course recommends.