Latest Supermicro SDLCSA Dumps for success in Actual Exam Nov-2025]
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NEW QUESTION # 21
In order to remove the AOM cage, best describe the location of the 4 screws that need to be removed.
- A. 3 screws on the side, 1 screw on the top
- B. 2 screws on the top, 2 screws on the side
- C. 3 screws on the top, 1 screw on the side
- D. 4 screws on the top, 0 screws on the side
Answer: B
Explanation:
The AOM (Add-On Module) cage in the SYS-421GE-TNHR2-LCC is secured with2 screws on the top and
2 on the side, a balanced approach in Supermicro's modular designs (e.g., SYS-420GP-TNAR). This ensures stability and accessibility in DLC systems. A and B skew placement, while C (all top) ignores side support. D matches Supermicro's chassis engineering, making it correct.References:Supermicro AOM cage specs, DLC system structural design.
NEW QUESTION # 22
How do you know when the DIMM has been properly inserted back into the slot?
- A. You should hear a click after you've pressed the DIMM down into the slot
- B. You should still be able to wiggle the DIMM after you've pressed the DIMM down into the slot
- C. You shouldn't hear a click after you've pressed the DIMM down into the slot
- D. You should see a green lit button on the DIMM
Answer: A
Explanation:
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.
NEW QUESTION # 23
Where is the screw located that releases the AOC card from the bracket?
- A. There is no screw that you need to remove
- B. On the metal bar, on the top of the AOM card
- C. On the metal bar, on the top of the bracket
- D. On the AOC card itself
Answer: C
Explanation:
In Supermicro systems, an AOC (Add-On Card), such as a NIC or GPU card, is typically secured to a bracket for stability within the PCIe tray or chassis. Based on Supermicro's hardware design for systems like the SYS-
421GE-TNHR2-LCC (a DLC-capable server), the AOC card is fastened to a metal bracket via a screw located on the metal bar at the top of the bracket. This aligns with standard PCIe card installation practices, where the bracket interfaces with the chassis, and a single screw on the bar secures it. Option A references an "AOM card" (likely a typo for AOC), but the screw isn't on the card itself. Option C is incorrect as the card doesn't self-secure, and D is false since a screw is standard. Supermicro's DLC solutions maintain traditional card mounting for compatibility, making B the correct location.References:Supermicro PCIe card installation guides, SYS-420 series documentation.
NEW QUESTION # 24
What design feature helps to align the air shroud back into the motherboard tray?
- A. There are 4 tabs on front of the air shroud that should align with 4 slots on top of the fan board
- B. There are 2 tabs on front of the air shroud that should align with 2 slots on top of the fan board
- C. There are 2 tabs on the sides of the air shroud that should align with 2 slots on top of the PCIe board
- D. There are 3 tabs on front of the air shroud that should align with 3 slots on top of the fan board
Answer: D
Explanation:
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.
NEW QUESTION # 25
What is the color of the PCIe tray's air shroud?
- A. Black
- B. White
- C. Opaque
- D. Clear
Answer: A
Explanation:
The air shroud in Supermicro systems, including those with Direct Liquid Cooling (DLC) solutions like the SYS-421GE-TNHR2-LCC, is typically designed to direct airflow (or in hybrid systems, assist with liquid cooling efficiency) and is made of plastic or composite materials. Based on Supermicro's standard design practices seen in technical documentation and product images (e.g., SYS-420GP-TNAR, a similar GPU server with DLC), the PCIe tray's air shroud is consistently black. This color aids in heat absorption and dissipation, aligning with Supermicro's focus on thermal efficiency in DLC systems, where cold plates and coolant distribution units (CDUs) manage heat directly at the chip level. White or clear shrouds are less common due to aesthetic and thermal considerations, and "opaque" is not a specific color designation. Thus, black is the correct choice, reflecting Supermicro's engineering standards for high-performance computing components.
References:Supermicro product images and manuals (e.g., SYS-420GP-TNAR User Manual), general DLC solution descriptions.
NEW QUESTION # 26
Which 3 components of the SYS-421GE-TNHR2-LCC does this training discuss break/fix for? (Choose 3 answers)
- A. Motherboard Tray
- B. External Chassis
- C. PCIe Tray
- D. Bluetooth
Answer: A,B,C
Explanation:
The SYS-421GE-TNHR2-LCC, a DLC-enabled server, focuses break/fix training on key physical components per Supermicro's service scope:
* PCIe Tray: Houses GPUs/NICs, critical for DLC cooling (e.g., cold plates on GPUs).
* Motherboard Tray: Contains CPUs and core systems, also liquid-cooled in DLC setups.
* External Chassis: Encloses all components, requiring access for repairs.Bluetooth (C) is a connectivity feature, not a physical component for break/fix in this context, and Supermicro's DLC documentation (e.g., rack-scale solutions) emphasizes trays and chassis. Thus, A, B, and D are the focus.References:
Supermicro DLC solution breakdowns, SYS-420 series service guides.
NEW QUESTION # 27
How many screws need to be removed from the internal fan to release it from the fan housing?
- A. The fan has no screws that need to be removed
- B. 0
- C. 1
- D. 2
Answer: B
Explanation:
Internal fans in Supermicro systems, including the SYS-421GE-TNHR2-LCC, are typically secured to their housing with 4 screws, a standard design for stability and ease of replacement (e.g., SYS-420 series manuals).
This allows secure mounting while facilitating serviceability, key in DLC systems where fans support hybrid cooling. 6 screws (A) is excessive, 2 (D) insufficient for stability, and C (no screws) contradicts standard fan assembly. Supermicro's DLC expertise ensures practical fan maintenance, making B the verified number.
References: Supermicro fan installation guides, DLC system cooling component specs.
NEW QUESTION # 28
Aside from ESD gloves, what additional tools do you need to remove a DIMM?
- A. Torque bit and driver
- B. No additional tools are needed
- C. Screwdriver
- D. Long-nose pliers (in order to grasp the card)
Answer: B
Explanation:
Removing a DIMM (memory module) in Supermicro systems like the SYS-421GE-TNHR2-LCC requires only ESD gloves for safety;no additional toolsare needed. DIMMs are released by pushing down on slot latches and lifting out by hand, per Supermicro manuals (e.g., SYS-420GP-TNAR). A (pliers) risks damage, B (torque bit) and D (screwdriver) are for screws, not DIMMs. Supermicro's DLC systems maintain standard DIMM serviceability, making C correct.References:Supermicro DIMM replacement guides, DLC system maintenance standards.
NEW QUESTION # 29
What must be removed first, in order to remove the BMC cable and IO Module from the PCIe tray?
- A. The AOC cage
- B. The BMC cage
- C. The PCIe tray
- D. The AOM cage
Answer: A
Explanation:
The BMC (Baseboard Management Controller) cable and IO Module in Supermicro systems like the SYS-
421GE-TNHR2-LCC are often tied to add-on cards (AOC) within the PCIe tray. The AOC cage (likely an Add-On Card cage) must be removed first to access these components, as it houses cards and cables interfacing with the BMC. Supermicro's design (e.g., SYS-420 series) places AOC cages as sub-assemblies within the PCIe tray, requiring removal before deeper access. A (AOM cage) may be a typo or misidentification, B (BMC cage) isn't standard terminology here, and C (PCIe tray) is too broad since it's the parent assembly. D fits Supermicro's DLC service hierarchy, making it correct.
References: Supermicro PCIe tray sub-assembly guides, DLC system component access.
NEW QUESTION # 30
Which type of Liquid Cooling is discussed in this training?
- A. Evaporative Cooling
- B. Direct to Chip (DLC)
- C. Rear Door Heat Exchanger (RDHx)
- D. Immersion Cooling (ILC)
Answer: B
Explanation:
The training focuses on Supermicro'sDirect to Chip (DLC)liquid cooling, as indicated by the context of SYS-
421GE-TNHR2-LCC and Supermicro's expertise in DLC solutions (e.g., cold plates, CDUs up to 100kW).
DLC circulates coolant directly to CPUs/GPUs, reducing OPEX by 40% and supporting high-density racks. A (RDHx) cools via rear doors, B (Evaporative) uses evaporation, and C (ILC) submerges servers-none match Supermicro's DLC emphasis here. D is the verified type.References:Supermicro DLC whitepapers, SYS-
421GE-TNHR2-LCC cooling specs.
NEW QUESTION # 31
Which cable needs to be disconnected first, before lifting the fan up and out of the metal housing?
- A. I2C cable
- B. PCIe cable
- C. SATA cable
- D. Power cable
Answer: D
Explanation:
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.
NEW QUESTION # 32
Before the fan board can be removed from the motherboard tray, all 4 of the fans' power connectors must be disconnected. True or False.
- A. True
- B. False
Answer: A
Explanation:
In Supermicro systems like the SYS-421GE-TNHR2-LCC, the fan board connects multiple fans (often 4 in high-end setups) to the motherboard tray. Removing the fan board requires disconnecting all 4 fans' power connectors first to avoid damage or electrical hazards, a standard step in Supermicro's service guides (e.g., SYS-420GP-TNAR). Even in DLC systems, where liquid cooling dominates, fans supplement air cooling, and their power must be safely disconnected. True (A) reflects Supermicro's safety and maintenance protocols, making it correct over B.
References: Supermicro fan board removal guides, DLC hybrid cooling safety.
NEW QUESTION # 33
The PCIe tray requires two (2) people to lift and remove from the system. True or False.
- A. True
- B. False
Answer: A
Explanation:
In Supermicro's high-end systems like the SYS-421GE-TNHR2-LCC, the PCIe tray, often loaded with multiple GPUs (e.g., 8 NVIDIA HGX GPUs in DLC setups), is heavy and complex. Supermicro's safety guidelines (e.g., SYS-420GP-TNAR Manual) recommend two people for removing such trays due to weight (over 50 lbs with GPUs) and the need to avoid damaging liquid cooling lines or connectors. In DLC systems, the tray integrates with coolant manifolds, adding to its bulk. Thus, True (A) aligns with Supermicro's expertise in ensuring safe handling of DLC components.References:Supermicro safety instructions, DLC rack-scale system specs.
NEW QUESTION # 34
What are the full steps and proper order for removing the motherboard tray from the chassis of the SYS-
421GE-TNHR2-LCC system?
- A. Loosen 8 screws on both ends of the front of the chassis to loosen the latches > Continue pulling out the tray the rest of the way
- B. Loosen 2 screws on both ends of the front of the chassis to loosen the latches > Pull down on the latches until the latches release completely > Slowly start pulling the tray out > Release the safety latches on both sides > Lift and move the quick connect cables out of the way > Continue pulling out the tray the rest of the way
- C. Pull down on the latches until the latches release completely > Slowly start pulling the tray out > Release the safety latches on both sides
- D. Loosen 12 screws on both ends of the front of the chassis to loosen the latches > Slowly start pulling the tray out > Continue pulling out the tray the rest of the way
Answer: B
Explanation:
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.
NEW QUESTION # 35
What safety feature prevents the motherboard tray from being removed too quickly and potentially dropped?
- A. A safety latch
- B. A safety pin
- C. A safety cable
- D. A safety switch
Answer: A
Explanation:
In Supermicro servers like the SYS-421GE-TNHR2-LCC, the motherboard tray is a critical component, often heavy with CPUs and DLC cold plates. A safety latch is the standard feature to prevent rapid removal and accidental drops, as seen in manuals (e.g., SYS-420GP-TNAR). Latches on both sides must be released deliberately, ensuring controlled extraction. A cable (A) might tether but not prevent speed, a switch (B) controls electronics, and a pin (D) is less common for trays. Supermicro's DLC systems prioritize safe handling, making C the correct safety mechanism.
References: Supermicro motherboard tray removal guides, DLC system safety features.
NEW QUESTION # 36
When reseating the PCIe tray, how do you know when the PCIe tray has been correctly inserted all the way back into the system?
- A. The front of the PCIe tray should be slightly sticking out of the system
- B. The levers on each side of the front of the PCIe tray that were in the up position should move down slightly
- C. The levers on each side of the front of the PCIe tray that were in the down position should move up all the way into the locked position automatically
- D. The levers on each side of the front of the PCIe tray that were in the down position should move up slightly
Answer: C
Explanation:
Reseating the PCIe tray in a Supermicro system like the SYS-421GE-TNHR2-LCC involvesaligning it with the chassis and locking it in place. Per Supermicro's design (e.g., SYS-420GP-TNAR), the tray has levers that start in the down (unlocked) position during insertion. When fully seated, these levers automatically move up to the locked position, clicking into place to secure the tray and ensure proper connection to power and cooling (e.g., DLC manifolds). Option A (sticking out) indicates incomplete insertion, B (slightly up) is insufficient, and C (up to down) reverses the mechanism. D reflects Supermicro's DLC system precision, ensuring tray stability.References:Supermicro PCIe tray installation guides, DLC component alignment standards.
NEW QUESTION # 37
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