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| Section | Objectives |
|---|---|
| WAN and Edge Connectivity Design | - SD-WAN architecture and design considerations - Traditional WAN and internet edge design |
| Network Automation and Programmability | - API-driven network automation concepts - Controller-based networking design |
| Enterprise Network Design Principles | - Design methodologies and best practices - Scalability and high availability design |
| Enterprise Campus Network Design | - Campus LAN architecture - Spine-leaf and hierarchical design models |
| Network Services Design | - Routing protocols design (OSPF, EIGRP, BGP) - Multicast and QoS design considerations |
| Security Design in Enterprise Networks | - VPN and perimeter security architecture - Segmentation and access control design |
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NEW QUESTION # 274
Refer to the exhibit. EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the links to R4.
When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?
Answer: C
Explanation:
As spoke router, only connected and summary route are communicated with neighboors.
Stub router only advertise Connected and Summary - it will not re-advertise route.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt- book/ire-eigrp-stub-rtg.html
NEW QUESTION # 275
Refer to the exhibit. A network architect is preparing a network design based on the EIGRR.
Routers are connected using a cat6a cable type and the inter-router connection speed is limited to 10 Mbps due to distance. During the pilot phase, a DUAL-3-SIA error message is visible.
Which action must the engineer take to create a stable design?
Answer: A
Explanation:
The DUAL-3-SIA error in EIGRP typically indicates a stuck-in-active state, which occurs when a router is unable to find a route to the destination within the expected timeframe. This can be caused by various factors, such as network instability, misconfigurations, or inefficient routing information.
Considering that the DUAL-3-SIA error usually happens because of route instability or excessive route updates, creating a summary route on R2 can help simplify the routing table and stabilize the design.
NEW QUESTION # 276
An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:
How must the solution prioritize the management traffic over the WAN?
Answer: C
NEW QUESTION # 277
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Answer:
Explanation:
NEW QUESTION # 278
An engineer is designing a BGP network for a large customer. To permit efficient scaling, the BGP domain is split into clusters. Which peering solution should be used between the route reflectors in different clusters for the BGP routes to be propagated appropriately?
Answer: A
Explanation:
Route reflectors in different clusters should peer with one another as nonclients. BGP route reflection is used to reduce the full-mesh requirement inside an AS. Within a cluster, route-reflector clients peer with their route reflector and do not need to peer with every other client. However, route reflectors still need a way to exchange routes learned from their respective clusters. Cisco BGP route-reflection rules allow a route learned from a client to be reflected to other clients and to nonclient peers. A route learned from a nonclient peer is reflected only to clients. Therefore, route reflectors in different clusters should maintain iBGP peerings as nonclients so that routes can propagate between clusters and then be reflected down to each cluster's clients.
Making route reflectors clients of each other can create confusing policy and cluster behavior. Having no peering would isolate the clusters. Peering only through another nonclient router adds unnecessary indirection and does not improve scale. The correct scalable design is route-reflector-to-route-reflector nonclient peering.
Reference topics: BGP route reflectors, clusters, client and nonclient peers, iBGP scaling, route reflection rules.
NEW QUESTION # 279
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