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| Section | Objectives |
|---|---|
| Topic 1: Security Design in Enterprise Networks | - Segmentation and access control design - VPN and perimeter security architecture |
| Topic 2: Network Automation and Programmability | - API-driven network automation concepts - Controller-based networking design |
| Topic 3: WAN and Edge Connectivity Design | - Traditional WAN and internet edge design - SD-WAN architecture and design considerations |
| Topic 4: Network Services Design | - Multicast and QoS design considerations - Routing protocols design (OSPF, EIGRP, BGP) |
| Topic 5: Enterprise Campus Network Design | - Campus LAN architecture - Spine-leaf and hierarchical design models |
| Topic 6: Enterprise Network Design Principles | - Design methodologies and best practices - Scalability and high availability design |
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NEW QUESTION # 347
Refer to the exhibit. An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is considered as a backup and must be used only when the path to ISP-1 is down. Which solution must the engineer choose?
Answer: B
NEW QUESTION # 348
What is the purpose of a control plane node in a Cisco SD-Access network fabric?
Answer: C
Explanation:
The SD-Access control-plane node maintains the endpoint database and resolves mappings between endpoints and the fabric edge nodes where those endpoints are located. Cisco SD-Access uses LISP in the fabric control plane. Edge nodes register endpoint identifiers with the control-plane node, and other fabric nodes query the control plane when they need to locate a destination endpoint. This control-plane function is commonly described through LISP Map-Server and Map-Resolver behavior. Option B is not correct because endpoint detection occurs at the edge node, not at the control-plane node. The edge is the device connected to users, access points, or endpoint-facing networks, so it learns local endpoint presence and registers that information.
Option C refers to authentication and identity, which is integrated with Cisco ISE. Option D describes the border-node role, because border nodes connect the fabric to external networks. The corrected answer is therefore A. A stable SD-Access design must provide redundant control-plane reachability and scale the control-plane role according to fabric size, mobility, and endpoint churn. Reference topics: SD-Access control plane, LISP Map-Server, LISP Map-Resolver, endpoint-to-location mapping.
NEW QUESTION # 349
Refer to the exhibit. An architect is designing a Layer 3 routed network using point-to-point fiber links between the topology layers. BFD is supported on the software that runs within the infrastructure. Is BFD required within the design to provide sub-second convergence in the event of a fiber breakage?
Answer: C
Explanation:
BFD provides rapid fault detection but requires tuning of its transmit and receive intervals to achieve sub-second convergence. Simply enabling BFD does not automatically guarantee the desired fault-detection speed without configuring appropriate timers.
NEW QUESTION # 350
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
Answer: B
Explanation:
Enabling EIGRP stub routing on the spokes decreases convergence time in a hub-and-spoke design by reducing unnecessary queries and preventing spokes from being treated as transit routers. EIGRP convergence can be delayed when a router loses a route and must query many neighbors to determine whether an alternate path exists. In remote-site or spoke designs, a spoke normally has no useful alternate path for networks beyond itself, so querying it wastes time and can contribute to stuck-in-active conditions. Cisco EIGRP stub routing allows the spoke to advertise only permitted route types and informs upstream routers not to query the spoke for routes outside its scope. This creates a cleaner query boundary and accelerates convergence after link or route failures. Subsecond timers can detect neighbor loss more quickly, but they do not address the broader EIGRP query behavior shown in the design. Increasing hold or dead timers would slow detection, not improve convergence. Therefore, in the displayed hub-and-spoke EIGRP design, enabling stub routing on the spokes is the correct solution to decrease convergence time.
NEW QUESTION # 351
In a cisco SD-Access brownfield deployment scenario, which configuration deployment must be taken with Cisco DNA center?
Answer: B
NEW QUESTION # 352
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