Aruba Switching Expert (Written) case studies
Aruba Switching Expert (Written) · Put your knowledge to work in context.
The Aruba Switching Expert (Written) is a written, multiple-choice examination intended to validate advanced, hands-on knowledge of Aruba wired switching in enterprise campus and branch networks. It suits network engineers, senior administrators, and design or operations staff who already work with Aruba switches and want independent evidence of depth beyond entry-level certification. The exam spans the full switching lifecycle: fundamentals and network design; VLANs, trunking, and Layer 2 segmentation; spanning tree and loop prevention; link aggregation and redundancy; stacking and switch virtualization; Layer 3 switching, routing, and IP services; security and access control; multicast, QoS, and traffic management; and monitoring, troubleshooting, and operations. Expect scenario-driven items that ask you to predict behavior, interpret output, or choose the least disruptive fix rather than simply recall a command. The Aruba Switching Expert (Written) case studies are 5 cases and about 1,977 words.
1Access Closet Uplink Congestion After VLAN Consolidation
A two-building campus runs 24 access switches, each with a single 1 Gb/s fiber uplink to a distribution pair (no LAG). The access layer carries user VLANs 10-40 plus a voice VLAN 50.
435 words, about 2 min2STP Root Placement in a Redundant Triangle
Three distribution switches - D1, D2, D3 - are cabled in a triangle (D1-D2, D2-D3, D1-D3), all running RSTP with default priorities. D1 is the current root only because its base MAC is lowest.
391 words, about 2 min3LAG Hashing and a Single Elephant Flow
A server connects to a switch pair via a 4-member LAG of 10 Gb/s links (40 Gb/s aggregate) using LACP. The server runs a backup job that opens one TCP connection to a remote host and pushes data at line rate.
355 words, about 2 min4Inter-VLAN Routing Failure After Distribution Change
A distribution switch pair serves VLANs 10 (users), 20 (servers), and 99 (management). Users in VLAN 10 can reach servers in VLAN 20.
424 words, about 2 min5QoS Starvation of Voice Under Bulk Data
An access switch connects IP phones (VLAN 50, DSCP EF 46) and PCs (VLAN 10, untrusted, DSCP 0) to a 1 Gb/s uplink. During large file transfers from PCs, users report choppy voice.
372 words, about 2 min