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問題 #83
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 an HQ with a staff of 200 employees. The organization has eight Regional Managers and two VPs who work from home and 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 location is 240K sq ft (22300 sq m) and the Canadian warehouse is 130K sq ft (12100 sq m). The forklifts on the loading docks are equipped with a wireless tablet on board.
A typical store is reportedly about 60,000 sq ft (5575 sq m) and smaller stores are planned at
25,000 sq ft (2320 sq m). The locations need to expand the abilities to vendors that need to add setup displays or interactive kiosks in the stores. The current infrastructure was installed in 2015 and used wireless N technology in a coverage model. The wiring is Cat5, and they are unsure of the fiber connections. The inventory is all placed on the floor when it is delivered to the local store.
Inventory control is handled through Zebra barcode scanners, and they have had a lot of issues in getting signals throughout the stores and this makes monthly inventory difficult. The organization has a small help desk to troubleshoot issues that happen at the retail locations and PC support for the office. The company is looking to upgrade away from the current PBX system later this year. With the need to grow and cut costs, they are interested in moving the data to the cloud but need to get almost real-time inventory control for the online service to function.
The network has all been wired over the last ten years, but with the new systems being all wireless, they have seen the trend to offer wireless to all the vendors for their needs but also would be to allow employees, guests, and contractors all to use it. With the new IT director starting next week, the project has been set by the CTO of the company. The marketing group has asked how they can interact with the customers and get more info, while the IT support desk needs to cut staff in half.
The office has an MDF and two IDFs located on floors one and two. The MDF is in the basement, and you have multiple WAN circuits for the HQ links. Each store has a local handoff from the cable company (ethernet) in the middle of the store in the office, so distance for the wiring is not an issue.
The customer has budget concerns but does want something that could last 7+ years.
Based on the scenario, where would you look to add additional items to the BOM to aid the company goals? (Choose three.)
答案：B,E,F
解題說明：
Security Team/CISO
In light of increasing connectivity (to vendors, employees, guests, and contractors), ensuring network security is paramount. The Security Team can provide insights into the necessary security infrastructure, such as firewalls, intrusion detection/prevention systems, and secure access controls, which are crucial for protecting sensitive data and maintaining compliance.
Building Facilities
Engaging with the Building Facilities team can help identify any infrastructure needs that might be necessary for physical installations, such as AP placement, power supply for equipment, and cabling requirements. This collaboration ensures that the network design aligns with the physical layout and operational needs of the building.
Customer Experience Officer
The Customer Experience Officer (CXO) would focus on enhancing customer interactions through technology. This could lead to investments in tools that support interactive kiosks, real- time inventory systems, and enhanced guest Wi-Fi experiences, all of which contribute to improved customer satisfaction and engagement in the retail environment.
問題 #84
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 wants to ensure redundant RADIUS resources in each of their three geographical regions (AMER, EMEA, and APAC). A large office location is available in each region with sufficient VMware resources available.
* Each region has between 4,435 and 5,859 clients, all of which will need to do either 802.1X wired or wireless authentications, as well as 802.1X authentication for a single personal device on Wi-Fi.
* All of the non-personal devices will also need to validate health with a local agent.
* A total of 500 guests are expected to be connected on average, with a maximum of 700 simultaneous connections making use of the Guest Portal for internet access.
* TACACS authentication will also be configured for a total of 1,200 NADs (evenly dispersed).
How many OnGuard licenses are required in this scenario?
答案：B
解題說明：
* Step 1: Understand OnGuard LicensingAruba ClearPass OnGuard is licensed per concurrent endpoint that requires health validation with an OnGuard agent.
* It is not licensed for guest users or NADs.
* It is not required for devices that only perform authentication (802.1X) without posture/health validation.
* Step 2: Apply to the Scenario
* Each region has 4,435-5,859 clients. For licensing calculations, we consider the upper bound (#5,859) to ensure sufficient capacity.
* Across three regions, the maximum concurrent devices = # 17,577 clients.
* Only non-personal devices need to validate health with OnGuard. The scenario specifies that all non-personal devices will require posture checks.
* For sizing, Aruba best practice is to round up and license at the nearest tier above the calculated need.
* Step 3: Guest and TACACS Exclusion
* Guests (500-700 concurrent) do not consume OnGuard licenses. They require Guest licenses.
* TACACS authentications for NADs (1,200 devices) are part of the ClearPass Device (Access) licensing, not OnGuard.
* Step 4: Final Licensing Requirement
* ~17,577 concurrent health-validated clients # 20,000 OnGuard licenses is the correct tier.
* This ensures coverage for all regions with redundancy and peak demand.
* Why the other options are incorrect:
* A (30,000): Oversized. Far exceeds required device count.
* B (15,000): Too small; would not cover all three regions.
* C (20,000): Correct, based on ~17.5k clients rounded up.
* D (10,000): Insufficient, less than total concurrent clients.
* Aruba Official Design Guide Reference:
* ClearPass Licensing Guide: OnGuard licenses are consumed per concurrent endpoint using posture/health checks.
* Aruba Validated Solution Guide for Campus Access: Always license to the highest expected number of concurrent OnGuard clients across the deployment.
* Best practices: Guest and TACACS authentications are separately licensed and do not consume OnGuard capacity.
Final Justification:
The financial institution requires # 17,500 OnGuard licenses across three regions. Aruba best practice is to round up to the next licensing tier. Therefore, the correct answer is 20,000 OnGuard licenses.
Reference Extracts (Aruba Official Study & Design Guides):
* Aruba ClearPass Licensing Overview: posture/health check concurrency model.
* Aruba ESP Campus Design Guide: license planning for multi-region deployments.
* ClearPass OnGuard Deployment Guide: non-personal devices with agent-based health validation.
問題 #85
The clients existing network isexperiencing trouble with voice occasionally dropping out on phone calls between office locations, it Is determined that no packet loss is occurring and QOS is likely the cause. With what phenomenon Is the client currently experiencing issues?
答案：A
解題說明：
The client is experiencing issues with Jitter, as depicted in Option B. Jitter refers to the variation in time between packets arriving, caused by network congestion, timing drift, or route changes. In voice communications, jitter can manifest as the occasional dropping out of voice on phone calls because the variable delay can affect the steady stream of voice packets needed for a clear conversation. Even when there is no packet loss, high levels of jitter can significantly impact the quality of Voice over IP (VoIP) calls.
Quality of Service (QoS) settings are essential in managing jitter, as they can prioritize voice traffic over other types of data, ensuring that voice packets are delivered consistently and in the correct order to minimize delays and prevent call quality degradation. Aruba Campus Access solutions would typically include QoS features to manage and mitigate jitter on the network.
問題 #86
The clients existing network is experiencing trouble with voice occasionally dropping out on phone calls between office locations, it Is determined that no packet loss is occurring and QOS is likely the cause. With what phenomenon Is the client currently experiencing issues?
答案：B
解題說明：
The client is experiencing issues with Jitter, as depicted in Option B. Jitter refers to the variation in time between packets arriving, caused by network congestion, timing drift, or route changes. In voice communications, jitter can manifest as the occasional dropping out of voice on phone calls because the variable delay can affect the steady stream of voice packets needed for a clear conversation. Even when there is no packet loss, high levels of jitter can significantly impact the quality of Voice over IP (VoIP) calls.
Quality of Service (QoS) settings are essential in managing jitter, as they can prioritize voice traffic over other types of data, ensuring that voice packets are delivered consistently and in the correct order to minimize delays and prevent call quality degradation. Aruba Campus Access solutions would typically include QoS features to manage and mitigate jitter on the network.
問題 #87
Manufacturing A.B.C. is an international, mid-sized company specializing in producing industrial equipment. They have been in the market for over two decades and have established themselves as a reputable player in their industry. However, due to rapid technological advancements, their current network infrastructure is outdated and struggling to keep up with the demands of modern manufacturing processes.
Manufacturing A.B.C.'s network is a mix of multi-vendor legacy wired and wireless components, causing frequent downtime and hampering their production efficiency. The aging equipment leads to slow data transfer rates, unreliable connectivity, and increased vulnerability to cyber threats.
Fiber Cabling should be also upgraded as mostly OM2 is being used.
Compounding the network issues, the recent departure of the CTO has left the company without a clear direction for the network refresh project. There is a lack of consensus among the management team regarding the scope, budget, and timeline for the upgrade.
The primary objectives of the manufacturing customer are as follows:
- Improve network performance and reliability to enhance production processes and minimize downtime
- Enhance network security to protect sensitive data and intellectual property
- Streamline communication and collaboration among different departments within the organization
- Ensure scalability to accommodate future growth and technology advancements Manufacturing A.B.C. seeks a comprehensive network refresh that includes the following components:
- Upgrading the wired infrastructure to high-speed Ethernet switches to support increased data transfer rates and reduce latency
- Implementing a robust wireless solution with enterprise-grade access points to provide seamless connectivity across the manufacturing facility
- Centralized network management tools to simplify administration and monitoring of the network Expectations:
The customer expects the network refresh project to be handled efficiently, with minimal disruption to their ongoing operations. They are looking for a reliable and experienced network solutions provider who can understand their unique manufacturing requirements and deliver a customized solution that aligns with their budget constraints. The manufacturing customer is keen on receiving clear project proposals and support in decision-making, given the recent change of the CTO.
Your role as a network solutions provider is to address their concerns, offer expert guidance, and present a well-defined plan to meet their objectives effectively.
You assume that the current network infrastructure does not have any wireless shadow IT equipment operated on the various floors/production sites, but you want to verify this. How could you find out if wireless shadow IT equipment is currently operational?
答案：C
解題說明：
A passive wireless site survey detects all RF devices transmitting in the environment, including unauthorized APs or hotspots. Reviewing the survey results with the customer allows identification and removal of any wireless shadow IT equipment.
問題 #88
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