Online Access Free H12-891_V1.0-ENU Practice Test

Regarding the Stub region and the Totally Stub region of the OSPF protocol, the following statement is correct (multiple choice)

• A.ASBR cannot be present in either the Stub zone or the Totally Stub zone
• B.If there are two ABR in the Totally Stub zone, each ABR sends an LS ID of 0000 to the router in the zone LSA
• C.After modifying the original Stub area to a Totally Stub area, the number of LSAs in the LSDB of each router in the region will definitely be reduced
• D.When you modify the original Stub area to a Totally Stub region, the number of LSAs propagating within the region will definitely decrease

How many bits are there in the label field of MPLS?

• A.1
• B.3
• C.20
• D.8

When configuring ISIS zone authentication, which ISIS message will carry the authentication letter? (Single choice questions).

• A.ISIS?Level-1?SNP?LSP?
• B.Hello message of ISIS's Level2-
• C.Hello message of ISIS's Level-1.
• D.ISIS?Level-2?SNP?LSP?

If the OSPP protocol is running in the network, after configuring the non-backbone area in the OSPP area as the Totally Stub region, the ABR router sends a message to Totally. The Stub region issues an LSA with an LS ID of 0000, and what type of LSA is the LAS to?

• A.LSA5
• B.LSA3
• C.LSA1
• D.LSA2

If the Option field value in the 0SPFv3 Hello message issued by the router's GIgabit Ethermet0/0 interface is 0x000013, the following description is correct

• A.Router A's Gigabit/thernetO/0/0 interface belongs to the NSSA zone
• B.Router A supports AS-An External-LSA flood
• C.Router A is an OSPFv3 device with forwarding capability
• D.The Gigabit/thernetO/0/0 interface of Router A adds IPv6 routing to compute