Each OSPF router uses only one Router-LSA to describe the local active connection status of an area.

Routing information can be advertised only between backbone and non-backbone areas and cannot be advertised directerly between non-backbone areas.

Router-LSA describes four connection types: P2P, TransNet, SubNet, and virtual link.

Link State ID in a Type 3 LSA indicates the router ID of an ABR.

A Huawei switch changes from RSTP to STP. After the STP-enabled switch is removed from the network, the RSTP-enabled switch can be moved back to the RSTP mode.

A Huawei switch changes its mode from STP to RSTP. After the RSTP-enabled switch is removed from the network, the STP-enabled switch can be moved back to the RSTP mode.

STP and RSTP is compatible each other, but the rapid convergence of RSTP is unavailable.

STP and RSTP calculation are performed independently.

Prune

Graft

Flooding

State-refresh

H.323

FTP

Telnet

SMTP

TRUE

FALSE