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| Section | Objectives |
|---|---|
| Topic 1: Network Services Design | - Routing protocols design (OSPF, EIGRP, BGP) - Multicast and QoS design considerations |
| Topic 2: Security Design in Enterprise Networks | - VPN and perimeter security architecture - Segmentation and access control design |
| Topic 3: Network Automation and Programmability | - API-driven network automation concepts - Controller-based networking design |
| Topic 4: WAN and Edge Connectivity Design | - Traditional WAN and internet edge design - SD-WAN architecture and design considerations |
| 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 # 157
What are two valid scaling techniques when an EIGRP network is designed that consists of more than 1000 routers? (Choose two.)
Answer: A,E
Explanation:
Section: Advanced Addressing and Routing Solutions
NEW QUESTION # 158
Which feature must be incorporated into the campus LAN design to enable Wake on LAN?
Answer: C
Explanation:
Section: Advanced Enterprise Campus Networks
NEW QUESTION # 159 
Refer to the exhibit. An architect designed a BGP routing solution to reduce the number of IBGP peerings to conserve resources. The original design had a total of 36 IBGP peerings. The new design reduces the number of peerings by how many?
Answer: C
Explanation:
The new BGP route-reflector design reduces the iBGP peerings by 27. A full-mesh iBGP design with 9 routers requires n times n minus 1 divided by 2 peerings, which equals 9 times 8 divided by 2, or 36 sessions.
Route reflectors are used specifically to reduce this scaling burden. In the redesigned topology, each of the three clusters has one route reflector and two clients, which requires two client-to-reflector sessions per cluster, or six sessions total. The three route reflectors must still maintain iBGP sessions with one another as nonclient peers, which adds three more sessions. The redesigned total is therefore nine sessions. The reduction is 36 minus 9, which equals 27. This reflects the core scaling benefit of route reflectors: clients no longer need a full iBGP mesh with every other client in the autonomous system. Reference topics: BGP route reflectors, iBGP scaling, full-mesh formula, route-reflector clients, nonclient peering.
NEW QUESTION # 160
Refer to the exhibit.
Refer to the exhibit. An engineer Is designing a multicampus Layer 3 Infrastructure using EIGRP as the routing protocol. The design must provide quick replies to queries In the event of a downlink, prevent unnecessary queries, and ensure that traffic does not unnecessarily transit the access layer. Which two actions must the engineer take for the network design? (Choose two.)
Answer: B,E
NEW QUESTION # 161
Which feature minimizes HOC connections and reduces strain on the vSmart controller m an SO-WAN architecture?
Answer: D
Explanation:
Affinity is the SD-WAN feature used to control and reduce control connections between WAN Edge devices and vSmart controllers. Cisco SD-WAN high-availability documentation describes controller affinity as a way to limit the number of controllers that an edge device establishes control connections with, while still preserving controller and data center redundancy. This reduces unnecessary control-plane load and limits the strain placed on vSmart controllers in large overlays. The feature is particularly useful when multiple vSmart controllers exist across multiple data centers and the designer wants predictable primary and backup controller relationships. The color attribute identifies transport characteristics, such as public Internet, MPLS, or other transport types. Control-connections is a general concept, not the feature that minimizes them. Control- direction is not the correct design construct for this purpose. A scalable SD-WAN design should use affinity where controller scale, regionalization, and control-plane efficiency must be explicitly managed. Reference topics: Cisco SD-WAN controller affinity, vSmart scale, control connections, TLOC control-plane optimization.
NEW QUESTION # 162
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