Huawei Updated H12-821_V1.0 Exam Questions and Answers by sid

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 are compatible with each other, but the rapid convergence of RSTP is unavailable.

STP and RSTP calculation are performed independently.

According to BGP route selection rules, the MED value has a lower priority than AS_Path, Preferred-Value, Local-Preference, and Origin.

The default MED value of BGP routes is 0.

By default, BGP can compare the MED values of routes from different ASs.

By default, if there is no MED value in routes, the value 0 is used. If the bestroute med-none-as-maximum command is configured, the maximum MED value 4294967295 is used.

OSPF does not have an acknowledgement mechanism. Therefore, OSPF relies on the upper-layer protocol, TCP, for acknowledgement.

OSPF performs LSDB update every 30 minutes.

OSPF uses the Bellman-Ford algorithm, and each router independently runs this algorithm.

OSPF floods a LSU packet at an interval of 5s.

The route 11.1.0.0/16 is permitted by node 10, and its tost Is set to 300.

The cost of all routes is set to 200.

All the routes that are not permitted by node 10 will be denied.

The route 11.1.0.0/16 will continue to match node 20 after permitted by node 10, and (he final cost is set to 200.