Free Huawei H12-221 Exam Dumps Questions & Answers

When a routing protocol import routes discovered by other routing protocols, it must import only the routes that meet the conditions and set attributes for the imported routes. In such a case, a route-policy can be created.

• A.TRUE
• B.FALSE

ABRs advertise link state information about non-backbone areas into backbone areas. The backbone area then advertises the routing information into other non-backbone areas. Link state information about the backbone area cannot be advertised into non-backbone areas.

• A.TRUE
• B.FALSE

How does a BGP router process a received route whose next hop is unreachable?

• A.The BGP router sends an error message to the router that has sent the update message.
• B.The BGP router refuses the route.
• C.The BGP router accepts the route and adds it to the BGP routing table. This route, however, is neither preferred nor added to the IP routing table for packet forwarding.
• D.The BGP router accepts the route and adds it to the BGP routing table. This route participates in route selection and may be selected as the optimal route to be added to the IP routing table for packet forwarding.

Which of the following statements are correct regarding BGP attributes? (Select 2 answers)

• A.Till now, there are 16 BGP attributes
• B.BGP attribute can be extended to 256 types
• C.AS_PATH is an optional transitive attribute
• D.Well known discretionary attribute may not be included in each BGP update message, such as origin attribute

Which of the following statements are correct regarding how OSPF detects old or duplicate LSAs? (Select 3 answers)

• A.An LSA can be flushed from the routing domain by setting its LS age to equal the Maxage.
• B.A router uses 0x80000001 as the sequence number when it generates the first LSA.
• C.The smaller the LS age, the more recent the LSA.
• D.The lower the sequence number, the more recent the LS