Pass the Supermicro Liquid Cooled Servers SDLCSA Questions and answers with ExamsMirror

The LPIO (Low-Profile IO) board and BMC cable in Supermicro systems are typically secured by a minimal number of screws for quick serviceability, a principle in DLC designs like the SYS-421GE-TNHR2-LCC. Based on similar systems (e.g., SYS-420GP-TNAR), the metal bracket holding these components is fastened with 2 screws, balancing security and ease of access. Higher counts like 8 (A), 5 (B), or 6 (D) are excessive for a small bracket, while 2 (C) matches Supermicro’s standard for IO-related brackets. In DLC contexts, modularity is key, supporting C as the verified number.

References: Supermicro IO board installation guides, DLC system service efficiency.

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.

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.

An AOC (Add-On Card) in Supermicro systems, such as a NIC or GPU card, is secured to its bracket with1 screwon the metal bar at the top, a standard PCIe card mounting practice (e.g., SYS-420GP-TNAR manuals). This single screw ensures stability while allowing easy removal, consistent with Supermicro’s DLC system serviceability. 4 (A), 2 (B), or 3 (D) screws would be excessive for a single card bracket. Supermicro’s modular design in DLC solutions supports C as the verified number.References:Supermicro AOC card installation guides, DLC system component specs.

When inserting a DIMM in Supermicro systems, proper seating is confirmed by aclickas the slot latches snap into place, securing the module (e.g., SYS-420GP-TNAR manuals). This audible feedback is standard in DLC systems for reliable memory installation. B (green button) isn’t a feature, C contradicts correct insertion, and D (wiggling) indicates failure. Supermicro’s design ensures firm DIMM placement, making A the verified sign.References:Supermicro DIMM installation guides, DLC system component reliability.

Removing the motherboard tray from the SYS-421GE-TNHR2-LCC involves:

Loosen 2 screws on both ends of the front of the chassis: Secures latches, per Supermicro’s design (e.g., SYS-420GP-TNAR).

Pull down on the latches until they release completely: Frees the tray.

Slowly start pulling the tray out: Initiates removal.

Release the safety latches on both sides: Prevents dropping (DLC safety feature).

Lift and move the quick connect cables: Clears DLC coolant or power lines.

Continue pulling out the tray: Completes removal.Option D is the most comprehensive, matching Supermicro’s DLC system protocols. A skips screws and cables, B (12 screws) and C (8 screws) exaggerate screw count, lacking safety steps. D ensures safe, complete removal.References:Supermicro motherboard tray removal guides, DLC system safety features.

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.

Fans in Supermicro systems, including those with DLC like the SYS-421GE-TNHR2-LCC, are powered by a power cable connecting to the fan board or motherboard. Before removing a fan from its housing, the power cable must be disconnected first to ensure safety and prevent electrical damage, a standard step in Supermicro’s service protocols. PCIe cables (A) connect expansion cards, I2C cables (C) handle communication (not fan power), and SATA cables (D) link storage drives—none are relevant to fan removal. In DLC systems, where fans may supplement liquid cooling, power disconnection remains critical, making B the verified answer.

References: Supermicro fan replacement guides, DLC hybrid cooling safety standards.

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.