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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Discover Customer Requirements | 23% | - Document requirements and stakeholder expectations - Gather business and technical requirements - Identify constraints, performance, security and scalability needs |
| Topic 2: Propose and Validate the Solution | 17% | - Present solution and justify design decisions - Validate solution against requirements and constraints - Create design documentation and executive summary |
| Topic 3: Analyze Requirements | 30% | - Map requirements to technical solutions - Develop preliminary Bill of Materials (BoM) - Design wired and wireless topologies - Evaluate impact of network technologies and protocols |
| Topic 4: Architect the Solution | 30% | - Plan high availability, redundancy and security - Finalize Bill of Materials and implementation plan - Design overlay and underlay architectures - Select appropriate HPE/Aruba products and technologies |
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56. Frage
What is the recommended bandwidth of a VSX Inter-Switch Link?
Antwort: A
Begründung:
The VSX Inter-Switch Link (ISL) must support all traffic that may need to traverse between the two VSX peers during convergence or asymmetric forwarding. Aruba recommends sizing the ISL equal to or greater than the uplink speed, ensuring sufficient bandwidth for peak forwarding without creating an ISL bottleneck.
57. Frage
A large multinational financial institution has contracted you to design a new full-stack wired and wireless network for their new 6-story regional office building. The bottom two floors of this facility will be retail space for a large banking branch. The upper floors will be carpeted office space for corporate users, each floor being approximately 100.000 sq ft (9290 sqm). Data centers are all off site and will be out of scope for this project. The customer is underserved by its existing L2-based network infrastructure and would like to take advantage of modern best practices in the new design. The network should be fully resilient and fault-tolerant, with dynamic segmentation at the edge. The retail space will include public guest Wi-Fi access. Retail associates will have corporate tablets for customer service, and there will be a mix of wired and wireless devices throughout the retail floors. The corporate users will primarily use wireless for connectivity, but several wired clients, printers, and hard VoIP phones will be in use. The customer is also planning on renovating the corporate office space in order to take advantage of "smart office' technology. These improvements will drive blue-dot wayfinding. presence analytics, and other location-based services. The client is looking to utilize lower-cost Aruba OS-CX switches in their wiring closets. They calculate that each closet will need a stack or qty 6 POE (AT) and qty 0 Gigabit Ethernet switches stacked with low-cost OACs. Which series switch should you recommend?
Antwort: A
Begründung:
The Aruba CX 6300F series is a suitable recommendation for the described scenario due to its performance, PoE capabilities, and cost-effectiveness for wiring closet deployments. The CX
6300F series offers the flexibility and scalability needed for modern network environments, supporting both wired and wireless connectivity demands. It provides advanced features such as stackability, high- density PoE options, and the capability to support dynamic segmentation, which is essential for separating and securing different types of network traffic, such as corporate data and guest Wi-Fi access. This series is designed to meet the needs of a full-stack wired and wireless network in a large, multi-story office building, providing the necessary infrastructure for both current and future network requirements.
58. Frage
What are the considerations when using existing MMF and upgrading to equipment capable of 10 GbE speeds? (Select two)
Antwort: A,E
Begründung:
When upgrading existing Multimode Fiber (MMF) infrastructure to accommodate equipment capable of 10 GbE speeds, two primary considerations are the length of the MMF fiber (Option A) and the type of MMF fiber (Option C). The length of the fiber impacts the signal quality and bandwidth capacity, with longer lengths potentially requiring signal conditioning or different types of fiber to support higher speeds. The type of MMF fiber, such as OM1, OM2, OM3, or OM4, significantly affects its bandwidth capabilities and distance limitations at 10 GbE speeds. OM3 and OM4 fibers are designed to support 10 GbE transmissions over longer distances compared to OM1 and OM2, making them more suitable for upgrades to higher speeds. Understanding these factors is crucial to ensure the existing fiber infrastructure can support the desired network performance without extensive modifications or replacements.
59. Frage
Which is true with regard to device capabilities?
Antwort: A
Begründung:
Aruba's recommendation for device density in a generic office environment is based on achieving optimal performance and user experience. The suggestion to support 30-50 devices per radio takes into account the typical bandwidth requirements, application usage, and performance expectations in an office setting. This range is designed to ensure that the wireless network can adequately support the number of devices without significant degradation in service quality. It balances the need for connectivity with the practical limits of wireless technology, ensuring that each device maintains a reliable connection and adequate throughput. This recommendation is part of Aruba's best practices for network design and deployment, aimed at providing efficient and effective wireless coverage in office environments.
60. Frage
A global cruise line company needs to refresh its current fleet. They will refresh the 'insides' of the ship to be cost-effective and increase their sustainability. They will replace the complete WLAN/LAN hardware of the ship. In this refresh, the company will not refresh its current security requirements. The CIO also wants to limit the number of unused ports in the switches. Future expansion will always mean a refresh of hardware. They start with the smallest ship with a maximum of 800 guests.
Each ship has a LAN infrastructure consisting of two core switches, up to 10 redundant distribution switches, and up to 500 access switches (400 cabins, 100 technical rooms). The Core switches are located in the MDF of the ship and the distribution switches are located in the IDFs of the ship. Each cabin and technical room gets one single access switch.
The cabling structure of the ship will not be refreshed. Each IDF is connected to the MDF by SMF, of which two pairs are available for the interconnect between the core and distribution. The length of SM fiber between MDF and IDF is less than 300 meters (980 ft) and the type used is OS1. Each cabin is connected by a single OM2 pair to the IDF, the maximum length is 60 meters (200 ft). Each technical room is connected by a single OM2 pair to the IDF, with lengths between
100 and 150 meters (320 and 500 ft).
For each cabin/technical room the customer is looking to replace their current fan-less 2530/2540 without changing the requirements, except they need to upgrade the uplink to distribution switch to 10GbE to handle the increased network traffic, and the technical rooms need redundant power.
The WLAN infrastructure will be 1:1 refreshed without new cabling or new AP locations. Their WLAN infrastructure is based on the 200/300 series indoor and outdoor APs running InstantOS (less than 300 APs), the customer has no change in WLAN requirements.
The cruise line company will replace its current internet connection before the LAN/WLAN refresh. The new Internet connection will provide a 99.8% uptime, which is needed to ensure the paid quest Wi-Fi is always operational. With this new Internet connection, the CIO of the cruise line wants to base the design on the ESP architecture from Aruba because internet connection is guaranteed.
Based on the best practices and customer requirements, what is the correct LAN approach?
Antwort: A
Begründung:
Underlay Network: This approach is ideal for maintaining simplicity and efficiency in a ship's network environment, where there is a clear need for robust connectivity for both management and user traffic. By keeping both types of VLANs in the underlay, the network can ensure better performance and easier troubleshooting. The underlay provides the foundational connectivity, which is crucial for handling the expected increase in network traffic due to the upgrade.
Overlay Networks: While overlay networks can provide flexibility and segmentation, they are generally more complex and may not be necessary in this scenario, especially given the focus on cost-effectiveness and the existing cabling structure.
61. Frage
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