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| Section | Objectives |
|---|---|
| Topic 1: Network Services Design | - Multicast and QoS design considerations - Routing protocols design (OSPF, EIGRP, BGP) |
| Topic 2: WAN and Edge Connectivity Design | - Traditional WAN and internet edge design - SD-WAN architecture and design considerations |
| Topic 3: Enterprise Campus Network Design | - Spine-leaf and hierarchical design models - Campus LAN architecture |
| Topic 4: Network Automation and Programmability | - Controller-based networking design - API-driven network automation concepts |
| Topic 5: Security Design in Enterprise Networks | - VPN and perimeter security architecture - Segmentation and access control design |
| Topic 6: Enterprise Network Design Principles | - Design methodologies and best practices - Scalability and high availability design |
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NEW QUESTION # 275
Which queuing structure is used on SD-WAN Edge routers?
Answer: D
Explanation:
Cisco SD-WAN edge routers use a queuing model based on LLQ and WFQ concepts. Low Latency Queuing provides strict priority treatment for delay-sensitive traffic such as voice and real-time media, while Weighted Fair Queuing gives proportional service to other traffic classes based on bandwidth allocation. This combination aligns with SD-WAN requirements where business-critical and real-time traffic must be protected without starving normal data applications. FIFO is not appropriate for a multi-class WAN design because it does not distinguish application priority during congestion. A pure priority queue would risk starving lower-priority traffic if it were not controlled by policing or bandwidth limits. Hardware-specific campus queuing models such as 1P-4Q-2T describe certain switch egress queue structures, not the generic SD- WAN edge queuing architecture. In a professional SD-WAN QoS design, traffic is classified, marked, mapped to forwarding classes, and then scheduled using priority and weighted queues according to business intent. Reference topics: Cisco SD-WAN QoS, LLQ, WFQ, forwarding classes, application-aware WAN policy.
NEW QUESTION # 276
Refer to the exhibit. An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24 toward network 10.10.20.0/24. Which solution should the architect include in the design?
Answer: A
Explanation:
OSPF first look at the prefered path list as below and secondly compare path metric:
Intra-Area (O)
Inter-Area (O IA)
External Type 1 (E1)
NSSA Type 1 (N1)
External Type 2 (E2)
NSSA Type 2 (N2)
So most appropriate answer is to configure R1-R2 link as multiarea adjacency.
under the interface configuration mode:
ip ospf network point-to-point
ip ospf multi-area 1
https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/118879-configure- ospf-00.html
NEW QUESTION # 277
Drag and Drop Question
Drag and drop the characteristics from the left onto the YANG modules they describe on the right.
Not all options are used.
Answer:
Explanation:
NEW QUESTION # 278
A company has many spoke sites with two data centers. The company wants to exchange the routing information between the data centers and the spoke sites using EIGRP. All locations belong to a single AS.
and auto-summarization Is disabled. Which two actions must the company choose? (Choose two.)
Answer: C,D
Explanation:
The scalable EIGRP hub-and-spoke design should make each spoke a stub router and summarize routes from the spokes toward the hubs. Cisco EIGRP documentation states that stub routing improves network stability, reduces resource utilization, and simplifies branch or edge router configuration. Stub spokes limit the routes they advertise and prevent the hub routers from sending unnecessary queries through remote sites.
Summarizing spoke routes toward the hubs further reduces routing-table size and contains convergence events when a subnet fails behind a spoke. Exchanging all routes between every location would increase memory, CPU, and query scope, which is the opposite of good EIGRP scale design. Summarizing only between the hubs may be useful in a dual-data-center design, but it does not solve the spoke scaling requirement. Splitting the network into two autonomous systems is unnecessary when the requirement states that all locations belong to a single AS. Reference topics: EIGRP hub-and-spoke design, stub routing, route summarization, query scope reduction, branch scale.
NEW QUESTION # 279 
Refer to the exhibit. Where must an architect plan for route summarization for the topology?
Answer: C
NEW QUESTION # 280
......
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