SDLCSA Dumps 2026 - New Supermicro SDLCSA Exam Questions
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NEW QUESTION # 21
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 levers on each side of the front of the PCIe tray that were in the up position should move down slightly
- B. The front of the PCIe tray should be slightly sticking out of the system
- C. The levers on each side of the front of the PCIe tray that were in the down position should move up slightly
- D. 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
Answer: D
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 # 22
In the video, how many AOC NIC cards are located on the LPIO board?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 23
Which 3 components of the SYS-421GE-TNHR2-LCC does this training discuss break/fix for? (Choose 3 answers)
- A. External Chassis
- B. Bluetooth
- C. Motherboard Tray
- D. PCIe Tray
Answer: A,C,D
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 # 24
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 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
- C. 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
- D. Pull down on the latches until the latches release completely > Slowly start pulling the tray out > Release the safety latches on both sides
Answer: C
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 # 25
Which statement accurately describes the location of the motherboard tray in the chassis of the SYS-421GE- TNHR2-LCC system?
- A. Below the GPU tray
- B. Above the GPU tray
- C. Below the PCIe tray
- D. Above the PCIe tray
Answer: C
Explanation:
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.
NEW QUESTION # 26
There are 2 slots for the M.2 drive. If only one is installed, it is important to note which slot it is removed from so that it can be re-installed to the same location. True or False.
- A. False
- B. True
Answer: A
Explanation:
In Supermicro systems with 2 M.2 slots (e.g., SYS-421GE-TNHR2-LCC), the slots are typically interchangeable unless specified by BIOS or hardware configuration (rare in standard setups). Re-installing an
M.2 drive to the same slot isn't critical for functionality, as the system auto-detects it, per Supermicro manuals. False (B) aligns with DLC system flexibility, making it correct over A.References:Supermicro M.2 installation guides, DLC system storage configs.
NEW QUESTION # 27
Which cable needs to be disconnected first, before lifting the fan up and out of the metal housing?
- A. PCIe cable
- B. I2C 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 # 28
When replacing the air shroud onto the motherboard tray, which 2 screws should be placed back first?
- A. The first 2 screws connecting the air shroud to the PCIe tray
- B. The first 2 screws connecting the air shroud to the fan board
- C. The first 2 screws connecting the air shroud to the motherboard tray
- D. The first 2 screws connecting the air shroud to the fan board
Answer: C
Explanation:
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.
NEW QUESTION # 29
What is the role of the pump in the D2C liquid-cooled rack?
- A. It provides air to cool the server
- B. It circulates the liquid and is placed directly on the chip to improve flow
- C. It turns the liquid into different colors based on the mood of the server
- D. It boils the liquid and overheats the server
Answer: B
NEW QUESTION # 30
How many screws need to be removed from the internal fan to release it from the fan housing?
- A. 0
- B. The fan has no screws that need to be removed
- C. 1
- D. 2
Answer: A
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 # 31
What are the full steps and proper order for removing the LPIO board from the PCIe tray?
- A. Remove metal bracket holding down LPIO board > Remove PCIe air shroud > Remove internal fans
- B. Remove PCIe air shroud > Remove all AOC NIC cards > Remove metal bracket holding down LPIO board
- C. Remove a few AOC NIC cards > Remove PCIe tray > Remove motherboard tray
- D. Remove GPU > Remove metal bracket holding down LPIO board > Remove 3 or 4 AOC NIC cards
Answer: B
Explanation:
Removing the LPIO (Low-Profile IO) board from the PCIe tray in the SYS-421GE-TNHR2-LCCinvolves:
* Remove PCIe air shroud: Clears access to components (standard in Supermicro designs).
* Remove all AOC NIC cards: Disconnects cards on the LPIO board for unobstructed removal.
* Remove metal bracket holding down LPIO board: Unscrews (typically 2 screws) the bracket securing the board.Option B follows Supermicro's logical service order (e.g., SYS-420GP-TNAR), ensuring safe access in DLC systems. A (GPU) is unrelated, C (tray removals) is excessive, and D (fans) is irrelevant. B aligns with Supermicro's DLC modularity, making it correct.References:
Supermicro PCIe tray service guides, DLC system IO removal protocols.
NEW QUESTION # 32
Before removing the LPIO board from the PCIe tray, what other component needs to be removed first?
- A. Air shroud
- B. Metal bracket
- C. GPU tray
- D. Motherboard tray
Answer: B
Explanation:
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.
NEW QUESTION # 33
Where is the air shroud located on the PCIe tray?
- A. On the top / right side of the PCIe tray
- B. On the bottom of the PCIe tray
- C. On the top / center of the PCIe tray
- D. On the top / left side of the PCIe tray
Answer: C
Explanation:
The air shroud on the PCIe tray in Supermicro systems like the SYS-421GE-TNHR2-LCC is positioned to optimize airflow or assist liquid cooling efficiency in hybrid setups. Per Supermicro's design (e.g., SYS-
420GP-TNAR), the shroud is located on the top/center of the PCIe tray, covering the cards to direct cooling effectively across components. This central placement ensures even distribution, critical in DLC systems where air may still cool non-liquid-cooled parts. Options B and D (right/left) are less practical for uniform coverage, and A (bottom) contradicts standard shroud placement above components. Supermicro's DLC expertise integrates air shrouds strategically, making C the verified location.References:Supermicro PCIe tray diagrams, DLC solution design principles.
NEW QUESTION # 34
Which type of Liquid Cooling is discussed in this training?
- A. Rear Door Heat Exchanger (RDHx)
- B. Evaporative Cooling
- C. Direct to Chip (DLC)
- D. Immersion Cooling (ILC)
Answer: C
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 # 35
What are the three main benefits of Liquid Cooling? (Choose 3 answers)
- A. Liquid molecules are closer together and result in a higher heat transfer
- B. Liquid is significantly better at removing heat than air
- C. Liquid is cheaper to implement
- D. Liquid is 25 times better at transferring heat
Answer: A,B,D
Explanation:
Supermicro's DLC solutions highlight:
* A: Liquid removes heat more effectively than air, a core advantage (e.g., 40% OPEX reduction).
* B: Closer liquid molecules enhance heat transfer, a physical principle in DLC.
* D: Liquid is ~25 times better at heat transfer than air, per Supermicro's technical claims.C (cheaper) is false-DLC has higher initial costs but saves long-term. A, B, D are the verified benefits.References:
Supermicro DLC whitepapers, heat transfer specs.
NEW QUESTION # 36
How many screws need to be removed from the metal bracket that holds down the LPIO board / BMC cable?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
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.
NEW QUESTION # 37
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