Supermicro SDLCSA - Supermicro Direct Liquid Cooling Service Associate (SDLCSA) Exam

The side bracket in the SYS-421GE-TNHR2-LCC, likely housing add-on components, is secured with2 screws on the top and 2 on the side, a balanced approach seen in Supermicro’s modular designs (e.g., SYS-420GP-TNAR). This distribution ensures stability and accessibility, common in DLC systems with dense configurations. A (all top) or C (3 top) skews placement, while B (1 top) is insufficient. D aligns with Supermicro’s chassis engineering, making it correct.References:Supermicro chassis bracket guides, DLC system structural design.

In Supermicro systems like the SYS-421GE-TNHR2-LCC, internal fans and their housing are typically located in themiddle of the motherboard tray, providing airflow across CPUs and memory, even in DLC setups where liquid cooling handles primary heat removal. This placement, seen in similar systems (e.g., SYS-420GP-TNAR), balances cooling distribution. A and B (PCIe tray) focus on GPU cooling, not motherboard fans, while C (back of motherboard tray) is less common due to PSU placement. Supermicro’s DLC hybrid designs integrate fans centrally on the motherboard tray, making D correct.References:Supermicro chassis layouts, DLC hybrid cooling configurations.

In Supermicro’s SYS-421GE-TNHR2-LCC, the motherboard tray isbelow the PCIe tray, consistent with high-end server designs (e.g., SYS-420GP-TNAR). The motherboard tray houses CPUs and core components, while the PCIe tray (often with GPUs) sits above, connected via risers or direct slots. Options C and D reference a “GPU tray,” likely a misnomer for the PCIe tray, but B remains accurate. Supermicro’s DLC systems stack trays vertically for cooling efficiency, confirming B as correct.References:Supermicro chassis layout specs, DLC system tray configurations.

Removing an AOC NIC card in Supermicro systems like the SYS-421GE-TNHR2-LCC requires more than pulling straight up. Per standard procedures (e.g., SYS-420GP-TNAR), you must first unscrew the card from its bracket (1 screw) and release any retaining mechanisms (e.g., PCIe slot latch). Simply pulling risks damage to the card or slot, especially in DLC setups with dense configurations. False (B) reflects Supermicro’s emphasis on careful hardware handling, making it the correct answer.References:Supermicro AOC card removal guides, DLC system component safety.

The side bracket in the SYS-421GE-TNHR2-LCC likely houses networking or management add-ons. TheAOM-PCIe card(e.g., AOM-GP401-PCIE module) andAOC NIC card(networkinterface card) are common components in Supermicro’s DLC systems, enhancing connectivity (e.g., high-speed NICs for AI workloads). A (GPU/PCIe) mixes unrelated categories, C pairs an AOM with a GPU (less likely), and D (AOC/PCIe) lacks specificity. B aligns with Supermicro’s DLC networking focus, making it correct.References:Supermicro add-on card specs, DLC system networking components.

The LPIO (Low-Profile IO) board in Supermicro systems like the SYS-421GE-TNHR2-LCC, part of the PCIe tray, is typically secured by ametal bracketthat must be removed first. This bracket holds the LPIO board and associated cables (e.g., BMC cable) in place, as seen in similar designs (e.g., SYS-420GP-TNAR). Removing it involves unscrewing (often 2 screws) and lifting it off, granting access to the LPIO board. A (GPU tray) is a separate assembly, C (motherboard tray) is unrelated to the PCIe tray’s LPIO, and D (air shroud) covers components but doesn’t secure the board. Supermicro’s DLC systems emphasize modular access, making B the correct step.References:Supermicro PCIe tray service guides, DLC system IO component layouts.

In Supermicro systems, the air shroud aligns with the motherboard tray via tabs and slots. The correct feature is3 tabs on the front of the air shroud aligning with 3 slots on top of the fan board, a common design (e.g., SYS-420GP-TNAR) for precise placement over fans and CPUs. B (4 tabs) and C (2 tabs) deviate from standard counts, while D (PCIe board) misplaces the alignment. Supermicro’s DLC hybrid cooling ensures shroud accuracy, making A correct.References:Supermicro air shroud installation guides, DLC system cooling alignment.

The fan board in Supermicro systems, including the SYS-421GE-TNHR2-LCC with DLC, manages cooling (even in hybrid air/liquid setups). The removal process, per Supermicro’s service manuals, involves:

Disconnect the power supply from all the fans: This ensures safety and prevents damage, a critical step in DLC systems where fans may supplement liquid cooling.

Pull up on the blue levers on each side of the fan board to unlock it: Blue levers are a common Supermicro design feature for releasing components securely.

Pull the fan board straight up and out of the tray: Once unlocked, the board is lifted free.Option B includes all necessary steps. A skips disconnection and unlocking, C omits the levers, and D misses power disconnection, risking damage. Supermicro’s DLC solutionsemphasize safe maintenance, supporting B as the correct procedure.References:Supermicro motherboard tray service guides, DLC system maintenance protocols.

In Supermicro systems like the SYS-421GE-TNHR2-LCC, the air shroud on the motherboard tray is typically a lift-off component not obstructed by a support bar. Unlike some designs with structural bars, Supermicro’s high-end servers (per manuals like SYS-420GP-TNAR) often feature open tray layouts for easy access, especially in DLC configurations where liquid cooling reducesreliance on complex air channels. Options A, B, and C assume a bar exists and must be removed, but no such requirement is standard. The shroud lifts off after screw removal, making D correct. Supermicro’s DLC design simplifies maintenance, supporting this conclusion.References:Supermicro motherboard tray documentation, DLC system accessibility features.