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| Section | Weight | Objectives |
|---|---|---|
| ArubaOS Switching | 20-25% | - Quality of Service (QoS) - Switch configuration and deployment - VLAN and spanning tree protocols - Network virtualization |
| ClearPass Policy Management | 15-20% | - Policy enforcement points - Guest and BYOD provisioning - Authentication and authorization frameworks - Integration with identity stores |
| Network Security and Compliance | 10-15% | - Regulatory compliance requirements - Threat defense architectures - Network segmentation strategies - Firewall policies and rules |
| Wireless LAN Architecture | 15-20% | - RF planning and spectrum management - Controller-based and controller-less architectures - Mobility controller deployments - Wi-Fi security protocols |
| Campus Access Network Architecture | 25-30% | - Multi-site campus designs - High availability architectures - Network topology design and optimization - Scalability considerations |
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14. Frage
You are using a 3-tier design and need to calculate the oversubscription ratio for the Access, Distribution, Core, and ToR layers.
What is a suitable oversubscription ratio for each layer? Matches may be used more than once or not at all.
Antwort:
Begründung:
Explanation:
Network layer
Oversubscription ratio
Access
24:1
Aggregation
4:1
Core
2:1
ToR
2:1
Network oversubscription describes the ratio between aggregate bandwidth available on downstream interfaces and the uplink bandwidth connecting those interfaces to the next network layer.
At the access layer, significant oversubscription can be acceptable because client devices rarely transmit at their maximum interface speed simultaneously. A ratio of 24:1 represents a traditional example of 48 Gigabit Ethernet ports sharing two Gigabit uplinks.
Aggregation switches consolidate traffic from access switches. A more conservative ratio is appropriate because aggregation links transport traffic from multiple network closets and must provide sufficient capacity during peak utilization.
The core layer performs high-speed forwarding between network segments and therefore requires relatively low oversubscription.
Top-of-Rack switches connect application servers and storage-related workloads where higher sustained throughput may justify conservative uplink capacity planning.
However, HPE's published Campus Design Validated Solution Guide recommends approximately 20:1 between access and aggregation and 4:1 between aggregation and core. It does not establish a universal 2:1 core or ToR ratio.
Consequently, the matching above is a plausible interpretation of the supplied choices, not an officially validated universal design table.
Official HPE Reference: HPE Aruba Networking Campus Design Validated Solution Guide - LAN Topologies; Data Center Design Validated Solution Guide - Connectivity Design.
15. 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 would like to ensure full wireless coverage in its 40 m x 40 m i
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%?
Antwort: B
Begründung:
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.
16. Frage
You are responding to the customer's RFP and are at the point of documenting design decisions that were not specified in the RFP or the RFP questions. What are valid examples of assumptions made that should be presented to the customer during the response? (Select three)
Antwort: B,D,E
Begründung:
In the context of responding to an RFP (Request for Proposal), it is common to make certain assumptions about the project environment when specific details are not provided. Answer A is valid because assuming the customer has technically capable staff is essential for the successful implementation of the proposed equipment; if this is not the case, additional training or services may be needed. Answer D is a reasonable assumption as well, given that physical space and power are fundamental requirements for installing new hardware; however, this should be clarified to avoid potential issues during deployment. Answer E is also a valid assumption, especially in modern network environments where management and orchestration systems often reside on virtual machines; assuming there are adequate resources for these systems is critical for the overall solution but should be verified with the customer. These assumptions are important to present to the customer to ensure there are no misunderstandings or gaps in the project planning phase, as highlighted in Aruba Campus Access documentation.
17. Frage
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.)
Antwort: A,B,D
Begründung:
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.
18. Frage
ACME retail has 38 locations spread out across Ave US states and two provinces in Canada.
They are looking to grow 20% over the next two years. They have an HO 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 st) m) and the Canadian warehouse Is 130K sq ft (12100 sq ml. The forkllfts on the loading docks are equipped with a wireless tablet on board.
A typical store Is reportedly about 60,000 sq ft (5575 sqm) and smaller stores are planned at
25,000 sq ft '2320 sq mi. 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 CatS. 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 like 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 halt. The. office has an MDF and two IDFs located on floors one and two.
The HOF is in the basement, and you have multiple WAN circuits for the HO 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. What should the architect be concerned about regarding the solution? (Select two.)
Antwort: A,B
Begründung:
In designing a network solution for ACME Retail, which operates across various regions in the US and Canada, the architect must consider Regulatory Domains and the challenges posed by multiple locations. Regulatory Domains are crucial because wireless standards and allowed frequencies vary by country, affecting how WLAN equipment is configured and deployed.
Compliance with local regulations is essential to avoid legal issues and ensure optimal network performance. The challenge of multiple locations involves ensuring consistent, high-quality network service across all sites, despite geographical distances and site-specific characteristics.
This requires a scalable, flexible network architecture that can be centrally managed while accommodating the unique needs of each location.
19. Frage
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