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質問 # 83
Which alternative source is best suited for site surveys or simul-ations if no floor plans are available?
正解：B
解説：
When floor plans are not available for site surveys or simulations, the best alternative source to use is the fire escape plan (Option D). Fire escape plans are typically available in most buildings and provide a simplified layout of the premises, including walls, doors, and sometimes the location of permanent fixtures. While not as detailed as architectural floor plans, fire escape plans can offer enough information for initial site survey estimations and RF planning. They allow network designers to understand the basic layout and potential RF obstacles or coverage areas, making them a practical tool for preliminary wireless network planning and simulations in the absence of more detailed floor plans.
質問 # 84
ACME Retail has 38 locations spread out across five US states and two provinces in Canada. They are looking to grow 20% over the next two years. They have a head office (HO) with a staff of 200 employees.
The organization has eight regional managers and two VPs who work from home and on the road. Stores typically have 17 employees on average per location.
The two warehouses have a remote loading system and 20 employees each to load the trucks and fulfill the online orders. The warehouse has 40-foot ceilings and large metal racks to store inventory. The main warehouse is 240,000 sq ft (#22,300 sqm), and the Canadian warehouse is 130,000 sq ft (#12,100 sqm).
Forklifts on the loading docks are equipped with wireless tablets onboard.
A typical store is about 60,000 sq ft (#5,575 sqm), and smaller stores are planned at 25,000 sq ft (#2,320 sqm). The locations need to expand wireless access to vendors who set up displays or interactive kiosks.
The current infrastructure was installed in 2015 using wireless N technology in a coverage model. Wiring is Cat5, and fiber connections are uncertain. Inventory is placed directly on the floor when delivered.
Inventory control is handled through Zebra barcode scanners, but poor coverage and signal issues have made monthly inventory counts difficult.
The organization has a small help desk for store support and PC support for the office. The company plans to move away from the current PBX system later this year. They want to cut costs, move services to the cloud, and achieve real-time inventory control for online order fulfillment.
The network has been wired over the last 10 years, but new systems are trending wireless. They want to provide wireless access for employees, guests, vendors, and contractors. The new IT director will start next week, and the CTO has prioritized this project.
Additional context:
* Marketing wants to interact with customers and collect more data.
* The IT support desk needs to reduce staff by half.
* The HO has an MDF and two IDFs (floors 1 and 2).
* WAN circuits exist for HO.
* Each store has a local Ethernet handoff from the cable provider in the office.
* Budget is a concern, but the solution must last 7+ years.
Based on best practices and customer requirements, what is the correct WLAN approach?
正解：D
解説：
* Why ArubaOS 10 (AOS10):
* ArubaOS 10 is the current next-generation WLAN architecture, designed for both campus and distributed branch deployments.
* It supports cloud-native management via Aruba Central, aligning with ACME's move to the cloud.
* Provides scalability for 7+ years, meeting the long-term investment requirement.
* Supports Wi-Fi 6/6E APs, which are essential for high-density retail and warehouse environments.
* Why Gateways are Needed:
* Gateway role is critical to support:
* Tunneled traffic for segmentation (guest, vendor, employee).
* Cloud Guest Authentication and captive portal functions for customers.
* Application visibility and role-based policy enforcement.
* Integration with SD-Branch WAN for resilience and cost control across remote stores.
* Gateways ensure the unified policy enforcement across all sites (head office, branches, warehouses, retail stores).
* Why Not the Other Options:
* B (InstantOS 8): Outdated architecture, limited to smaller standalone AP deployments, not recommended for enterprise growth or cloud-centric operations.
* C (AP-only AOS10): Provides Wi-Fi but lacks gateways, meaning no central policy enforcement, tunneling, or role-based segmentation. This would not meet ACME's requirements for guest/vendor access control, WAN resiliency, and security.
* D (ArubaOS 8 campus): Legacy controller-based solution, being phased out in favor of AOS10.
Does not align with cloud-first and future-ready requirements.
* Requirement Mapping to AOS10 AP + Gateway deployment:
* Real-time inventory & Zebra scanners # Reliable Wi-Fi 6E AP coverage with low latency.
* Cloud-based operations # Aruba Central + AOS10 integration.
* Guest, vendor, employee segmentation # Policy enforcement firewall and dynamic segmentation via gateway tunneling.
* Warehouses with high ceilings # Wi-Fi 6E APs with appropriate antenna design (AOS10 supports full AP portfolio).
* Cut IT staff in half # AI Insights and automation in Aruba Central reduce troubleshooting complexity.
* Marketing customer interaction # Cloud guest services and analytics integration with Aruba Central.
* 7+ year lifecycle # AOS10 architecture is future-proof and actively developed, unlike legacy OS8.
Final Justification:
The only solution that meets all customer requirements (cloud-based management, role-based segmentation, tunneling, guest/vendor access, real-time inventory, scalability, and 7+ years longevity) is an ArubaOS 10 AP and Gateway deployment.
質問 # 85
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 sq m). Data centers are all offsite 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 modem 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 would like to ensure full wireless coverage in its 40 m x 40 m (130 ft x 130 ft) auditorium during company functions while maintaining the fewest APs for aesthetic purposes.
Wi-Fi6 APs are a minimum requirement.
Which AP series would you use in the auditorium's 1,000 seats with a maximum take rate of
80%?
正解：B
解説：
The Aruba AP-635 is a Wi-Fi 6 (802.11ax) access point, designed for high-density environments such as auditoriums. It is capable of providing high throughput and efficient airtime fairness to a large number of clients, which makes it suitable for an auditorium setting with 1,000 seats and a high take rate. The AP-635's advanced capabilities, including OFDMA and MU-MIMO, allow it to handle multiple simultaneous connections efficiently, ensuring robust wireless coverage and performance during company functions, all while keeping the number of APs to a minimum to satisfy aesthetic concerns.
質問 # 86
What are the advantages of using a VSX-pair instead of two discrete switches to connect servers, storage, firewalls, and other workloads?
正解：B
解説：
Virtual Switching Extension (VSX) is a virtualization technology for Aruba AOS-CX switches that provides high availability by allowing two switches to appear as a single logical device to connected endpoints.
The primary advantage for servers and workloads includes:
* Multi-Chassis Link Aggregation (MLAG): VSX allows for the creation of Multi-Chassis Link Aggregation Groups. This enables bare metal servers and other workloads to connect to two different physical switches using a single LACP (Link Aggregation Control Protocol) bond.
* Redundancy and Throughput: Because both links in the MLAG are active, the server benefits from doubled bandwidth and seamless failover; if one switch goes down, the server continues to communicate through the second switch without a port flap.
* Control Plane Independence: Unlike older stacking technologies (VSR), VSX maintains separate control planes for each switch. This allows for Live Upgrades, where one switch can be updated while the other continues to forward traffic, ensuring zero downtime for connected workloads.
Why other options are incorrect:
* Option B: While VMware hosts can connect, their ability to use LACP is dependent on the VMware license level (e.g., Distributed Virtual Switch requires Enterprise Plus).
* Option C: While VSX synchronizes some parameters via the VSX-Sync feature, both switches maintain their own unique configurations (such as IP addresses and hostnames), so they do not literally
"share the same configuration".
質問 # 87
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 has decided to market additional tools to its retail customers. The desire is to make a Blue Dot wayfinding. app available to any customer to allow them to locate stores and services within the retail space.
They would also like to have directed pop-ups within the app appear when a customer walks within close proximity to any of the 10 "Promotional Kiosks" What licensing will be needed to make this retail solution a reality? (Select two.)
正解：A、C
質問 # 88
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