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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Addressing and Routing Solutions | 25% | - Create structured addressing designs - Create stable, secure, and scalable routing designs for Layer 3 - Determine IPv6 migration strategy |
| Topic 2: Services | 10% | - Design network management - Design end-to-end QoS policy |
| Topic 3: Enterprise Campus Security | 20% | - Design network security - Design network access control |
| Topic 4: WAN for Enterprise Networks | 20% | - Design QoS for WAN - Design SD-WAN solution - Design WAN connectivity |
| Topic 5: Advanced Enterprise Campus Networks | 25% | - Design campus network services (QoS, multicast, etc.) - Design Layer 2 and Layer 3 campus networks - Design for high availability |
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NEW QUESTION # 275
Since installing a cisco TelePresence system, the company is experiencing other application having response issues when the system in use. As a result, the company asked an architect to recommend a QoS solution. The customer is currently using a CBWFQ policy to manage traffic on an internet connection with a speed of 100 Mbps. Which link-capacity limit must the architect choose for strict-priority for the real-time traffic?
Answer: A
Explanation:
Cisco Technical Marketing testing has shown a significant decrease in data application response times when real-time traffic exceeds one-third of a link's bandwidth capacity. Extensive testing and customer deployments have shown that a general best queuing practice is to limit the amount of strict-priority queuing to 33 percent of a link's capacity. This strict-priority queuing rule is a conservative and safe design ratio for merging real-time applications with data applications.
https://www.ciscopress.com/articles/article.asp?p=357102&seqNum=7
NEW QUESTION # 276
In a cisco SD-Access brownfield deployment scenario, which configuration deployment must be taken with Cisco DNA center?
Answer: C
Explanation:
In a brownfield deployment scenario, the deployment of the underlay network must be taken with manual configuration. The other configurations, such as subnet stretching, LAN automation, and automated underlay, can be done with the help of Cisco DNA Center.
NEW QUESTION # 277
What is the purpose of the fabric management plane in a Cisco SD-Access architecture?
Answer: D
NEW QUESTION # 278
An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at each branch. To exchange the routes that are learned from the CE routers, which BGP address family should the ISP activate among the PE routers?
Answer: C
Explanation:
The provider must activate the VPNv4 unicast address family between PE routers. In an MPLS Layer 3 VPN, customer routes learned from CE routers are placed into VRFs on the PE routers. To carry those customer routes across the provider backbone without overlap, MP-BGP advertises VPNv4 routes, which combine an IPv4 prefix with a route distinguisher. Route targets then control which receiving VRFs import the routes.
Plain IPv4 unicast would not preserve customer VPN context and would not solve overlapping route separation. L2VPN EVPN is used for Ethernet VPN services and data center or Layer 2 VPN use cases, not classic MPLS L3VPN route exchange between PEs. Address-family multicast is unrelated to exchanging customer unicast routes between PE routers. Cisco MPLS VPN design relies on MP-BGP VPNv4 between provider edge routers, while PE-CE routing can be static, OSPF, EIGRP, BGP, or another supported method.
Therefore, VPNv4 unicast is the correct PE-to-PE address family. Reference topics: MPLS Layer 3 VPN, MP- BGP, VPNv4 unicast, route distinguishers, route targets, PE-CE routing.
NEW QUESTION # 279
An engineer is designing a network for a customer running a wireless network with a common VLAN for all APs. The customer is experiencing unicast flooding in the Layer 2 network between the aggregation and access layers. The customer wants to reduce the flooding and improve convergence time. Which solution meets these requirements?
Answer: D
Explanation:
Because the wireless access points must remain in a common VLAN, the practical design is to align the HSRP active gateway with the spanning-tree root bridge for that VLAN. Unicast flooding commonly occurs when a Layer 2 domain is stretched between aggregation and access layers and the traffic path becomes asymmetric. If the HSRP active gateway is on one aggregation switch while STP forwards the Layer 2 path through a different aggregation switch, return traffic can be forced across inter-switch links and CAM table aging can create flooding conditions. Cisco campus design guidance emphasizes aligning Layer 2 and Layer 3 forwarding roles so the active default gateway and spanning-tree root are colocated for each VLAN.
Migrating to routed access is usually the best long-term design, but it requires the APs to run on separate VLANs; the question states they use a common VLAN. Reducing ARP timers to match CAM timers can help some flooding cases, but it is not the core design fix offered here. Reference topics: HSRP and STP alignment, unicast flooding, Layer 2 campus design, wireless AP VLAN design.
NEW QUESTION # 280
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