On an IS-IS network, each router has at least one NET. If a router is configured with multiple NETs, ensure that these NETs have the same system ID.
Answer(s): A
When a router is configured with multiple NETs (Network Entity Titles) in an IS-IS network, the system ID portion of each NET must be the same to ensure consistent identification of the router across different areas or subnets within the network.
The following figure shows an IS-IS network. Interfaces on R1, R2, and R3 are all GE interfaces. R1 advertises network segment 10.0.1.1/32 to the IS-IS network. Which of the following values is the default cost of the route from R3 to 10.0.1.1/32?
Answer(s): C
The default cost of a route in IS-IS is typically 20. Since the interfaces on the routers in the given IS-IS network are GE (Gigabit Ethernet) interfaces, the default cost of a route between them is set to 20 unless manually configured otherwise.
Which of the following statements is false about BGP?
Answer(s): D
Load balancing can be implemented in BGP. While BGP selects the optimal route based on various attributes (like AS path, prefix length, etc.), it also supports Equal-Cost Multi-Path (ECMP) routing, which allows multiple best routes to be used for load balancing across multiple paths.
On a BGP network, which of the following configurations must be performed to establish indirectly connected EBGP peer relationships? (Choose all that apply.)
Answer(s): B,D
peer as-number: This configuration is required to specify the AS number of the EBGP peer in order to establish the connection between the routers.peer ebgp-max-hop: This is necessary when the EBGP peers are indirectly connected, allowing the maximum number of hops for the EBGP session to be configured, as EBGP typically only allows direct connections by default.
Which of the following values is the default interval at which a device sends Keepalive messages to maintain a BGP connection after a BGP peer relationship is established?
Answer(s): B
The default interval at which a device sends Keepalive messages to maintain a BGP connection after a BGP peer relationship is established is 30 seconds.
Route attributes are specific descriptions of routes. BGP route attributes can be classified into four types. Which of the following are well-known discretionary attributes? (Choose all that apply.)
Answer(s): A,D
Community: This is a well-known discretionary attribute in BGP. It is used to group routes into categories for policy purposes.Atomic_Aggregate: This is another well-known discretionary attribute. It indicates that the route has been aggregated, and no more specific information is available.
The apply as-path command can be configured for a route-policy to change the AS_Path attribute of BGP routes. To overwrite the original AS_Path with a specified AS number, which of the following parameters can be used?
overwrite: The "overwrite" parameter is used to replace the original AS_Path with a specified AS number when applying the as-path command in a route-policy. This completely overwrites the existing AS_Path with the new one.
Which of the following messages are sent when BGP establishes peer relationships? (Choose all that apply.)
Open: The Open message is the first message sent during the establishment of a BGP peer relationship. It is used to initiate a BGP session and negotiate parameters such as BGP version and AS number.Keepalive: After the peer relationship is established, Keepalive messages are exchanged periodically to maintain the BGP session and ensure the peer is still reachable.
Post your Comments and Discuss Huawei H12-821_V1.0 exam prep with other Community members:
Our website is free, but we have to fight against AI bots and content theft. We're sorry for the inconvenience caused by these security measures. You can access the rest of the H12-821_V1.0 content, but please register or login to continue.