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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services | 10% | - Design network management - Design end-to-end QoS policy |
| Topic 2: Advanced Addressing and Routing Solutions | 25% | - Create stable, secure, and scalable routing designs for Layer 3 - Create structured addressing designs - Determine IPv6 migration strategy |
| Topic 3: Advanced Enterprise Campus Networks | 25% | - Design Layer 2 and Layer 3 campus networks - Design campus network services (QoS, multicast, etc.) - Design for high availability |
| Topic 4: WAN for Enterprise Networks | 20% | - Design WAN connectivity - Design SD-WAN solution - Design QoS for WAN |
| Topic 5: Enterprise Campus Security | 20% | - Design network security - Design network access control |
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NEW QUESTION # 342
Refer to the exhibit. An architect must design an IPv6 migration solution for an enterprise customer to support these requirements:
- Clients will transition to the new IPv6 network, which provides NAT64 and IPv6 DNS resolution services, using the same DNS name that points to the IPv4 address.
- The service provider will create a client-facing IPv6 interface with
a new IPv6 virtual address that points to the same IPv4 DNS server.
- The service provider will support clients that use global IPv6
addresses and encapsulate IPv4 packets into IPv6 tunnels.
Which two migration solutions must the architect choose? (Choose two.)
Answer: C,E
Explanation:
Requirement for IPv6 Tunneling:
IPv6 devices must communicate with the IPv4 network via the core MPLS network. Using IPv6 tunneling encapsulates IPv4 packets in IPv6 tunnels, allowing communication while transitioning to IPv6. This aligns with the service provider's requirement to encapsulate IPv4 packets into IPv6 tunnels.
Requirement for NAT44/64:
NAT64 is required to translate IPv6 addresses to IPv4 addresses for devices accessing IPv4 resources. Additionally, the MPLS network must provide the NAT64 functionality at the edge (to the IGR) to enable seamless communication between IPv6 clients and IPv4 services (e.g., IPv4 Internet). NAT44 is included for IPv4-to-IPv4 traffic if needed.
NEW QUESTION # 343
What is a challenge of the SaaS model?
Answer: B
NEW QUESTION # 344
Which WAN connectivity technology is optimal for edge computing compared to others and why?
Answer: D
Explanation:
4G/5G connectivity is the best fit among the choices for edge-computing use cases because it can place network access close to users and endpoints while providing high bandwidth and low latency relative to many traditional WAN options. Edge computing is valuable when application processing, storage, or content delivery is moved closer to the point of consumption. Mobile broadband and 5G designs can support rapid deployment, local breakout, and low-latency access for distributed sites, sensors, and mobile users. MPLS Layer 3 VPN services provide predictable private WAN separation and mature QoS, but they are generally tied to provider POPs and data center-oriented connectivity rather than the closest edge location. DWDM is high-bandwidth optical transport but is primarily a metro or data center interconnect technology, not a flexible edge access service. Metro Ethernet can be strong in metropolitan areas but does not offer the broad mobile edge characteristics of 4G/5G. Reference topics: edge computing, 4G/5G WAN, low-latency access, distributed applications, WAN technology selection.
NEW QUESTION # 345
Which component of the SD-Access fabric is responsible for communicating with networks that are external to the fabric?
Answer: B
NEW QUESTION # 346
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: D
Explanation:
EIGRP stub routing is designed to prevent remote or spoke routers from being used as transit routers. In a hub- and-spoke or dual-homed remote design, a stub router advertises only the route types permitted by its stub configuration, such as connected or summary routes, and it is not queried for routes that it cannot reasonably provide. This reduces EIGRP query scope and helps avoid stuck-in-active conditions. The tradeoff is that the network must not depend on a stub site to carry transit traffic between other parts of the topology. In this scenario, the spoke nodes are configured as EIGRP stubs. When the direct R1-to-R2 link fails, R1 cannot use the alternate path through the other spoke-side topology as a transit path to reach a subnet attached to R2. The EIGRP stub design prevents the route from being advertised in a way that would make the spoke act as a transit router. As a result, R1 has no valid route to R2 ' s attached subnet and drops the traffic. This behavior is consistent with the purpose of EIGRP stub routing.
NEW QUESTION # 347
......
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