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| Section | Weight | Objectives |
|---|---|---|
| Security Services | 10% | - Secure connectivity - Security architecture design
|
| Network Services | 15% | - IP services
- Quality of Service (QoS)
|
| Software-Defined Access (SDA) | 5% | - Fabric design and deployment - SD-Access architecture - Control plane and data plane design |
| Advanced Enterprise Campus Networks | 25% | - Wireless integration - Layer 3 campus design
|
| WAN for Enterprise Networks | 20% | - WAN resiliency and high availability - VPN design
|
| Advanced Addressing and Routing Solutions | 25% | - IPv4 and IPv6 addressing design
|
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NEW QUESTION # 339
A company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link. Which approach achieves this goal and does not impact router CPU utilization?
Answer: A
Explanation:
BFD with default BGP timers is the best design choice because it improves failure detection without forcing BGP itself to run aggressive keepalive processing. Cisco documentation describes BFD as providing fast forwarding-path failure detection and notes that BFD can be less CPU-intensive than reduced EIGRP, BGP, and OSPF timers because parts of BFD can be distributed to the data plane. Lowering BGP keepalive and hold timers makes the BGP process detect failure sooner, but it increases control-plane activity and can create instability at scale. Tuning the BFD multiplier to an extreme value such as 50 is also counterproductive because it lengthens detection rather than improving it, depending on the interval used. The correct approach is to leave normal BGP timers in place and bind BGP neighbor fall-over to BFD. When the forwarding path fails, BFD notifies BGP quickly, allowing the route to be withdrawn and an alternate provider path to be selected faster without unnecessary BGP timer churn.
NEW QUESTION # 340
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
Answer: D
NEW QUESTION # 341
An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?
Answer: D
Explanation:
Traffic shaping is the QoS mechanism that queues excess packets and transmits them later to conform to a configured rate. In Cisco QoS design, shaping smooths bursts by buffering traffic instead of immediately discarding it when the offered rate exceeds the configured rate. This makes shaping appropriate on egress interfaces where the enterprise router has a higher physical interface speed than the actual provider committed information rate. WRED and RED are congestion-avoidance mechanisms that drop packets probabilistically to prevent full queue exhaustion, especially for TCP traffic. They do not intentionally hold excess packets for later transmission as the primary behavior. Policing enforces a traffic rate by dropping or remarking traffic that exceeds the configured contract; it does not buffer traffic to smooth bursts. Therefore, when the design requirement says excess packets must be queued for later transmission, the mechanism must be shaping. In WAN edge QoS, shaping is often paired with child queuing policies so latency-sensitive and business-critical classes receive correct treatment inside the shaped parent rate.
NEW QUESTION # 342
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
Explanation:
NETCONF: SSH-based; built to support candidate configuration. RESTCONF: HTTPS-based; lacks support for two-phase commit transactions.
NETCONF and RESTCONF both use YANG data models, but they use different transport and transaction behaviors. NETCONF is traditionally SSH-based and was designed as a network configuration protocol with datastore concepts such as running, startup, and candidate configuration where supported. The candidate datastore enables staged configuration changes and a commit workflow, which is useful for transactional network changes. RESTCONF exposes YANG-modeled resources through an HTTP-based REST interface, typically protected with HTTPS. It is simpler for web-style application integration because it uses familiar HTTP methods, URIs, and payload encodings such as XML or JSON. However, RESTCONF does not provide the same full two-phase commit transaction model associated with NETCONF candidate configuration workflows. Therefore, the correct mapping is that NETCONF is SSH-based and built to support candidate configuration, while RESTCONF is HTTPS-based and lacks support for two-phase commit transactions. In Cisco programmability design, NETCONF is often selected for robust configuration transactions, whereas RESTCONF is often selected for simpler API-driven integration.
NEW QUESTION # 343
A customer requested that a guaranteed service line be enabled for a manufacturing business in different countries. On the customer side, the QoS-aware application is used to process large data chunks. The application cannot tolerate drops and latency should be as low as possible.
Which QoS model must an engineer employ to use the minimum required resources on the ISP network nodes?
Answer: B
Explanation:
A domain-based QoS strategy with Per-Hop Behavior (PHB) is the best fit for guaranteeing a service line with low latency and no packet drops for an application that processes large data chunks. PHB ensures that traffic is classified and treated with consistent behavior across each node in the ISP network. This approach minimizes latency, avoids packet drops, and uses only the necessary resources, optimizing efficiency. It aligns with the requirement to provide high- quality service while conserving ISP network resources.
NEW QUESTION # 344
......
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