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| Section | Objectives |
|---|---|
| Topic 1: End-to-End Enterprise Architecture Scenarios | - Large-scale enterprise design
|
| Topic 2: Network Design Methodology and Principles | - Design lifecycle and methodology
|
| Topic 3: Routing and Path Control | - Traffic engineering
|
| Topic 4: MPLS and VPN Architectures | - MPLS fundamentals
|
| Topic 5: Infrastructure Design (Layer 2 / Layer 3) | - Layer 2 technologies
|
| Topic 6: Multicast and Advanced Services | - Network services
|
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NEW QUESTION # 537
An organization with 9000 users across 40 branches was using modem applications and their 15 years old network equipment failed several times to meet applications and users requirements.
The organization decided for some cost cuttings and to migrate some of applications to the public cloud. Which of the cost related benefits will this migrations and cost cutting realize?
Answer: B
Explanation:
Migrating applications to the public cloud shifts spend from large up-front hardware purchases (CapEx) to pay-as-you-go operational expenses (OpEx).
This aligns with the scenario of replacing failed, aging equipment and doing cost cutting by using cloud services instead of buying new hardware.
NEW QUESTION # 538
Which technology is an open-source infrastructure automation tool that automates repetitive tasks for users who work in networks such as cloud provisioning and intraservice orchestration?
Answer: B
Explanation:
* Ansible is an open-source automation tool that enables configuration management, application deployment, cloud provisioning, and orchestration.
* It uses simple YAML-based playbooks and SSH-based connectivity, making it agentless, highly scalable, and easy to integrate with networking environments.
* Commonly adopted in network automation, cloud infrastructure provisioning, and service orchestration as part of modern network design practices covered under CCDE v3.1.
Why other options are incorrect:
* B (Contrail): Network virtualization platform, not primarily an automation tool.
* C (Java): General-purpose programming language, not specifically designed for infrastructure automation.
* D (Jinja2): Templating engine, used inside Ansible but not an automation tool by itself.
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NEW QUESTION # 539
A business wants to refresh its legacy Frame Relay WAN. It currently has product specialists in each of its
200 branches but plans to reduce and consolidate resources. The goal is to have product specialists available via video link when customers visit the nationwide branch offices. Which technology should be used to meet this objective?
Answer: D
NEW QUESTION # 540
Refer to the exhibit.
Company XYZ must design a DMVPN tunnel between the three sites. Chicago is going to act as the NHS, and the company wants DMVPN to detect peer endpoint failures. Which technology should be used in the design?
Answer: C
Explanation:
In a DMVPN (Dynamic Multipoint VPN) design:
* One site (here, Chicago) functions as the Next Hop Server (NHS), which facilitates dynamic spoke-to- spoke tunnel establishment.
* DMVPN is based on multipoint GRE tunnels combined with NHRP (Next Hop Resolution Protocol).
* The ability to detect remote tunnel endpoint failures is essential for reliable routing convergence and tunnel restoration.
While GRE (Option C) is the encapsulation mechanism used in DMVPN, it does not inherently provide failure detection. Likewise, VPLS and L2TPv3 are Layer 2 VPN technologies and not applicable in DMVPN design.
To meet the requirement of peer failure detection, the correct mechanism is:
* B. IP SLA (Service-Level Agreement): This is a feature that actively monitors the health and reachability of tunnel endpoints through periodic probes (e.g., ICMP echo). When the peer becomes unreachable, routing protocol adjacencies can be withdrawn, and alternate paths selected.
Using IP SLA in a DMVPN design helps detect endpoint failure scenarios such as:
* A spoke going down unexpectedly
* Loss of return traffic
* Partial link failures
This design pattern is aligned with CCDE v3.1 "Protocol Design Implications", emphasizing resiliency, fault detection, and efficient routing convergence in overlay VPN designs like DMVPN.
NEW QUESTION # 541
An international media provider is an early adopter of Docker and micro services and is using an open-source homegrown container orchestration system. A few years ago. they migrated from on-premises data centers to the cloud. Now they are faced with challenges related to management of the deployed services with their current homegrown orchestration system.
Which platform is well-suited as a state-aware orchestration system?
Answer: A
NEW QUESTION # 542
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