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| Section | Objectives |
|---|---|
| Designing HPE Aruba Networking Data Center Solutions | - Data Center Network Architecture Design
- Security and Segmentation
|
| Implementation and Deployment Planning | - Solution Validation
|
| Operations and Optimization | - Lifecycle Management - Monitoring and Troubleshooting |
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NEW QUESTION # 55
Which two are valid reasons to recommend a routed underlay (Layer 3 to the leaf) in a VXLAN/EVPN fabric design? (Choose two.)
Answer: A,C
Explanation:
A routed underlay removes STP dependency and enables ECMP across all spine-leaf paths for deterministic load balancing and fast convergence. It still requires underlay IP addressing, doesn't guarantee zero oversubscription (that's a hardware/design choice), and doesn't eliminate the need for an overlay if one is desired for mobility/segmentation.
NEW QUESTION # 56
A customer is upgrading its data-center structured cabling to SMF. At the same time, the customer wants to upgrade the spine switches in its spine-and-leaf topology. A key objective of this upgrade is to eventually support 400GbE leaf-to-spine links. However, for some time, many leaf switches will continue to support
100GbE uplinks.
What is a valid recommendation for the spine switches?
Answer: A
Explanation:
Modern data center physical layer design requires balancing long-term bandwidth migration with backward compatibility for existing access tiers. In this scenario, the customer has upgraded the cabling plant to Single- Mode Fiber (OS2) and requires spine switches capable of native 400GbE forwarding, while currently accommodating legacy 100GbE leaf uplinks.
The HPE Aruba CX 9300-32D switch is the premier fixed 1U data center spine platform, delivering 32 ports of high-density 400GbE QSFP-DD (Double Density). To interface with existing 100GbE leaf switches over single-mode fiber, the architect must specify 400G 4x100G DR (Datacenter Reach) QSFP-DD transceivers.
The 400G DR4/eDR4 optical architecture utilizes four parallel single-mode fiber pairs (transmitting over an MPO-12/APC single-mode trunk) where each optical lane operates at 100Gbps using PAM4 modulation. By utilizing an optical breakout cable, each 400G QSFP-DD port splits cleanly into four discrete 100G DR (or
100G FR/LR via interoperable optical gear) links connecting to standard 100GbE QSFP28 leaf uplinks. MPO-
16 SR8 transceivers are engineered strictly for Multi-Mode Fiber (MMF) short-reach optics and are physically incompatible with SMF plants.
Reference Topics: HPE Aruba CX Hardware Architecture - CX 9300-32D Platform Specifications; 400G QSFP-DD Breakout Optics on Single-Mode Fiber (SMF).
NEW QUESTION # 57
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 scenario. You have learned that the customer needs to extend two VRFs between the new data center facility and the hospital. To meet with the requirements of the scenario and general best practices, what should you recommend for connecting border leaf switches to the hospital core?
Answer: C
Explanation:
This provides 400Gbps total, full-mesh resiliency, and separate routed connectivity for the two VRFs.
NEW QUESTION # 58
When proposing Aruba CX switches with Fabric Composer for a customer replacing a legacy Cisco Nexus environment, what is an important assumption to document regarding the migration?
Answer: A
Explanation:
Since NX-OS and AOS-CX have different APIs and CLI syntax, any existing automation tooling built against Nexus will not be directly portable and should be flagged as a migration assumption/risk. AOS-CX does support VXLAN, and Fabric Composer does not eliminate VLANs.
NEW QUESTION # 59
You are choosing switches for a new rack, which needs to support several types of traffic including HTTPS multicast streaming, and iSCSI traffic You are attempting to choose between CX 8360v2-32Y6C and CX 8325-48Y8C models both of which can meet the racks' port requirements. Which technical requirement should point you toward the 8325 model?
Answer: D
Explanation:
CX 8325 supports multiple dedicated lossless buffer pools, which fits a design requiring separate buffer allocation for different iSCSI tiers. CX 8360 supports PFC, but with shared loSSLESs resources rather than the same isolated pool model.
NEW QUESTION # 60
......
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