On an OSPF network, interfaces are classified into four types based on link layer protocols. Which of the following types can interfaces on an IS-IS network be classified into based on physical links?
Answer(s): A,B
IS-IS Interface TypesIS-IS interfaces are categorized based on physical link characteristics:Point-to-Point (P2P): Direct connections between two routers.Broadcast: Shared medium networks where multiple routers communicate.Incorrect OptionsC . P2MP and D. NBMA are not standard interface classifications in IS-IS.HCIP-Datacom-Core ReferenceIS-IS physical link classifications are elaborated in IS-IS link configuration sections.
Which of the following attributes must be carried when BGP sends route update messages?
Answer(s): B,C
Mandatory BGP AttributesNext_Hop: Specifies the next hop to reach the destination.AS_Path: Lists the autonomous systems traversed, crucial for loop prevention and route selection.Optional AttributesMED (Multi-Exit Discriminator) and Local_Preference are optional attributes that aid in route preference but are not mandatory.HCIP-Datacom-Core ReferenceBGP attribute behavior and classifications are detailed in BGP path selection principles.
A non-client is an IBGP peer that functions as neither an RR nor a client. A non-client must establish fully meshed connections with the RR and all the other non-clients.
Answer(s): A
Non-Client Definition in IBGPIn an IBGP setup with a Route Reflector (RR), a non-client is an IBGP peer that is neither the RR itself nor its client.Non-clients must establish fully meshed IBGP connections with all other non-clients and the RR because IBGP rules prohibit route propagation between non-clients without a direct connection.HCIP-Datacom-Core ReferenceThe behavior of non-clients in an RR topology is clearly outlined in the BGP implementation chapters.
In BGP, Keepalive messages are used to maintain BGP peer relationships. How often does a Huawei router send Keepalive messages by default?
Answer(s): C
BGP Keepalive messages are used to maintain an active BGP session between peers. When a BGP router receives a Keepalive message, it confirms that the peer is still reachable and maintains the session in the Established state. By default, a Huawei router sends Keepalive messages every 60 seconds to keep the connection active.
Which of the following statements is true about BGP?
Export Routing Policy ChangesWhen an export routing policy is modified, BGP does not automatically resend affected routes. Manual intervention, such as a clear ip bgp command, is required to resend Update messages reflecting the new policy.Incorrect OptionsB . IGP routes can also be advertised into BGP using redistribution, not just the network command.C . A router can be configured with multiple BGP processes using different AS numbers (multi- instance BGP).D . Open messages carry additional parameters such as AS number, Hold Time, and Router ID, not just the header.HCIP-Datacom-Core ReferenceBGP policy and update behavior are detailed in the route control and redistribution chapters.
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