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

Replacing the air shroud onto the motherboard tray in a Supermicro system involves securing it to the tray itself first for stability. The correct screws are those connecting the shroud directly to the motherboard tray, as outlined in Supermicro’s assembly guides (e.g., SYS-420 series). These initial screws align and anchor the shroud, ensuring proper fitment before additional connections (if any). Options B (PCIe tray) and C/D (fan board) are incorrect since the shroud’s primary attachment is to the motherboard tray, not other components. In DLC systems, precise shroud placement enhances cooling efficiency, supporting A as the correct choice.References:Supermicro motherboard tray assembly guides, DLC system component integration.

In Supermicro systems, the BMC (Baseboard Management Controller) card is secured with asingle, shorter screwto its bracket, while the BMC cable uses2 longer screwsfor robust attachment to the PCIe tray, per standard designs (e.g., SYS-420GP-TNAR). This difference accommodates component size and mounting depth in DLC setups. True (A) reflects Supermicro’s hardware specificity, making it the correct answer over B.References:Supermicro BMC installation guides, DLC system component specs.

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, 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.