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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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NEW QUESTION # 28
What is a key reason to interview the customer's storage team during data center network design, even if the network team owns the project?
Answer: D
Explanation:
Storage protocols often have specific network requirements -- for example, NVMe-oF or FCoE may require lossless (DCB/PFC) Ethernet, iSCSI may need dedicated VLANs, and FC may need separate SAN fabrics -- all of which must be reflected in the network design.
NEW QUESTION # 29
A customer's security team requires micro-segmentation down to the individual workload level within the data center. Which technology combination best satisfies this requirement in an Aruba CX + VMware environment?
Answer: C
Explanation:
NSX's distributed firewall enforces security policy at the vNIC/workload level regardless of physical topology, while the CX VXLAN/EVPN fabric provides the underlying transport. VLANs alone can't achieve workload-level granularity, physical firewalls per server pair are impractical, and disabling east-west traffic breaks application functionality.
NEW QUESTION # 30
During discovery, you learn the customer's current data center has no automation and all changes are made via CLI on individual switches. What follow-up Qis most important for scoping the design?
Answer: D
Explanation:
Understanding whether the customer wants to move toward automated, intent-based fabric management directly affects switch model selection, licensing, and overall architecture. The other options are irrelevant to design scope.
NEW QUESTION # 31
You are engaged by a customer with 1,115 employees to update the network after the previous network manager has left the company. Which methods can validate the present network state when the available network documentation is out of date? Choose two.
Answer: C,E
Explanation:
When entering an environment where institutional operational history is compromised and documented diagrams are obsolete, discovery must rely on verifiable empirical evidence. The primary architectural methodology dictates a combination of physical infrastructure auditing and dynamic Layer 2/Layer 3 discovery protocol evaluation.
Physical inspection directly verifies rack elevations, patch panel terminations, transceiver types (optical vs.
direct attach copper), and cable media integrity (such as OM3/OM4 or single-mode fiber), eliminating speculative assumptions about structured cabling pathways. Concurrently, querying standardized neighbor discovery protocols-predominantly Link Layer Discovery Protocol (LLDP, IEEE 802.1AB) and Cisco Discovery Protocol (CDP)-provides automated, real-time extraction of adjacent system identities, port capabilities, chassis IDs, management addresses, and VLAN memberships across all active physical switch ports.
Conversely, searching disorganized file shares yields conflicting historical snapshots, while interviewing non- technical personnel produces non-actionable anecdotal descriptions. Modern data center design standards emphasize that brownfield modernizations must baseline existing Layer 2 broadcast boundaries and Layer 3 transit topologies before introducing architectural modernizations.
Reference Topics: HPE Data Center Network Architectures - Assessing and Auditing the Current Environment; Discovery Protocols and Physical Layer Validation.
NEW QUESTION # 32
You have been asked to help design an HPE Aruba Networking CX network solution that connects AI servers to file storage. The solution must support NFS over RDMA and deliver 400 GbE links to the edge. The current design uses leaf and spine switches that carry all traffic in VXLAN tunnels. Every switch is a CX
9300-32D switch.
What is one correction you should make to the design?
Answer: D
Explanation:
Modern high-performance storage deployments supporting AI compute clusters utilize Remote Direct Memory Access (RDMA)-specifically RoCEv2 (RDMA over Converged Ethernet)-to achieve near-zero latency, direct memory transfers, and bypass OS kernel overhead for NFS over RDMA storage traffic.
RoCEv2 relies on Data Center Bridging (DCB) technologies, primarily Priority-based Flow Control (PFC, IEEE 802.1Qbb) to provide a lossless link layer and Explicit Congestion Notification (ECN, RFC 3168) paired with Quantized Congestion Notification (QCN) to avoid buffer bloat and pause frame propagation. In network ASIC forwarding pipelines, encapsulating packets inside VXLAN tunnels (encapsulating the inner Layer 2/3 headers inside an outer UDP/IP header) complicates hardware-based lossless traffic class mapping and end-to-end PFC pause frame handling across overlay-underlay boundaries.
HPE Aruba Networking storage reference architectures mandate that for high-throughput, latency-critical RoCEv2 and NFS over RDMA storage fabrics, traffic should be transported across a native, non-encapsulated Layer 3 routed fabric without VXLAN overlay encapsulation. Removing VXLAN encapsulation allows switch ASICs to inspect, prioritize, and police CoS/DSCP tags natively, maintaining end-to-end lossless DCB queuing.
Reference Topics: HPE Storage and AI Networking Reference Architectures - NFS over RDMA, RoCEv2 Lossless Transport, DCB/PFC and Non-VXLAN Fabric Design.
NEW QUESTION # 33
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