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| Section | Objectives |
|---|---|
| Topic 1: Prepare and Present the Solution | |
| Topic 2: Determine Customer's Requirements | |
| Topic 3: Architect the Solution | |
| Topic 4: Analyze Requirements |
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問題 #14
You are designing a CX data center network for a customer who has indicated that they must integrate the switches in their automation workflows. Which capability enables your customer to fulfill their objectives?
答案：A
解題說明：
Aruba CX switches support automation through a REST API using JSON, which enables integration with external automation/orchestration workflows.
問題 #15
Which of the following best describes the purpose of a "risk register" in a data center network design project?
答案：D
解題說明：
A risk register formally tracks identified project and technical risks along with their likelihood, impact, and mitigation plans, helping the architect and customer proactively manage uncertainty throughout the engagement.
問題 #16
Your customer requires management access to switches through SSH. Which authentication mechanism can be implemented?
答案：C
解題說明：
SSH management access can be authenticated against an external directory using secure LDAP/LDAPS, allowing centralized user authentication for switch administration.
問題 #17
A customer wants to know how their new EVPN VXLAN fabric will interoperate with their existing WAN edge routers, which only support traditional VLAN trunks. What is an appropriate design element to bridge this gap?
答案：D
解題說明：
Border leaf switches are designed to bridge overlay VXLAN networks to traditional VLAN-based external networks (such as legacy WAN edge routers), avoiding the need to replace or upgrade those devices as a prerequisite.
問題 #18
Waratah Hospital, based in Australia, is planning to move many data center services to new facility. (The remaining legacy data center will not be part of this project.) Waratah Hospital hired an external consultant to assist with the new data center network design.
Based on the requirements for the data center network infrastructure, the external consultant has created a high-level design. The below summarizes the content of the design document.
Requirements and information:
- Six racks in the data center room (single row).
- Redundant Top of Rack leaf switches with back-to-front cooling in each rack, providing 10/25 Gbps connectivity to servers, storage, and other devices.
- Four 100 GbE uplinks per leaf switch.
- The customer requested to install all switch ports facing the back of the rack racks (hot aisle.)
- OOB management for servers, storage, and network has to be provided through an external switch with back-to-front cooling. This switch has to be included in the solution. One OOB switch provides connectivity for two racks.
- Core equipment for the OOBM network is being reused.
- Middle-of-row spine switches.
-The data center should connect to the hospital building with links that provide 400 Gbps.
- Internet access is provided through an existing firewall cluster with two firewalls, each firewall in one data room. The second firewall is operating in standby mode, VRRP is utilized on the firewalls for failover. The data center network should connect to these firewalls with links that total
100 Gbps.
- The external link is a dark fiber direct link based on single-mode fiber (OS2). The distance to the main hospital 1.5 KM. The links will terminate on two core switches in the hospital.
The customer also requires:
- 99.999% uptime for this life-critical environment.
- Planned and unplanned downtime has to be minimized.
- Software upgrades are only allowed once per year with close to zero downtime.
- All life-critical resources are accessed locally, and all resources exist within the hospital campus.
- Waratah Hospital requires a highly secure environment for the data center. Encrypted wire speed connectivity between the data room and the hospital is a must-have because the link between the buildings crosses a public road.
- Waratah Hospital has a mix of virtualized (vSphere) servers. Nutanix storage, bare metal servers, backup servers and other devices.
In the past, the hospital has had a security breach that resulted in data loss, network downtime, and identity theft.
Refer to the rack requirements in the scenario. Which additional information can help you choose between CX 8325-48Y8C and CX 8360-48Y6C models?
答案：D
解題說明：
The scenario gives 10/25GbE requirements, but the exact current and future port-speed mix helps validate the best ToR model.
問題 #19
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