Huawei Updated H12-811_V1.0 Exam Questions and Answers by laith

In RSTP, both alternate and backup ports do not forward user traffic, but they can still receive and process BPDUs (Bridge Protocol Data Units). This allows the network to quickly reconfigure if the active path fails, as these ports are already participating in spanning tree calculations​.

Detailed Explanation:OSPF (Open Shortest Path First) has several key advantages:

It can load balance traffic among equal-cost routes.

OSPF supports hierarchical area structures, allowing for network scalability and reduced routing table sizes.

OSPF supports strong security measures through packet authentication (MD5 or plain text).

It supports Classless Inter-Domain Routing (CIDR), allowing for more efficient IP address allocation and route aggregation.

Dynamic IGP Routing Protocols:

OSPF (Open Shortest Path First): A dynamic IGP that uses link-state information for routing within an autonomous system​​.

Analysis of Options:

Option A: "Static" refers to manually configured routes, not dynamic.

Option B: "BGP" is a dynamic routing protocol but an EGP, not an IGP.

Option C: "Direct" refers to routes learned from directly connected networks and is not dynamic.

Option D: "OSPF" is a dynamic IGP, making it the correct choice.

Correct Answer:The dynamic IGP routing protocol is D (OSPF).

In OSPF, a router in the backbone area (Area 0) has a full LSDB (Link-State Database) for all routers within the OSPF domain. This comprehensive LSDB allows the backbone area to communicate effectively with other areas by providing routing information about all connected OSPF routers, facilitating inter-area routing​.