[2025年10月19日]SMI300XS試験問題集PDF正確率保証と更新された問題
合格させるSMI300XS試験にはリアルテストエンジンPDFには44問題あります
質問 # 19
What could happen to the system if the cables connecting the AOM card to the motherboard are not returned to their proper port locations?
- A. The system will self-destruct within 5 minutes.
- B. The customer will be happy.
- C. The AOM card or the system will not work properly.
- D. The system will function normally.
正解：C
解説：
TheAOM (Add-On Module) cardis a crucial expansion module used inSupermicro MI300X GPU systems for enhanced connectivity (e.g., RAID controllers, additional network interfaces, or IPMI management).
What happens if AOM cables are misplaced?
* The AOM card may not function
* The system depends onspecific cabling configurationsto communicate with the AOM module.
* Incorrect connections can causehardware failures, incorrect detection, or data transmission errors.
* PCIe lane allocation may be disrupted
* Many AOM cards usePCIe lanesfor data transmission.Misplacing cables can disable or limit their bandwidth, leading to performance degradation.
* BIOS may not detect the AOM card
* Some AOM cards requirefirmware initialization, which only happens if the correct ports are used.
Incorrect Answers Explained:
* A (System will self-destruct)# The systemwill not explode, butit may fail to boot properly.
* B (Customer will be happy)# Misconfigured AOM cards typically lead tosystem errors and dissatisfied customers.
* D (System will function normally)# If cables are misplaced,the system will not function properly.
Official Documentation Reference:
* Supermicro MI300X GPU System Hardware Guidestates thatAOM cables must be reconnected in their proper ports for the system to function correctly.
質問 # 20
Where is the one screw that needs to be removed in order to remove the AOM bracket?
- A. On top of the fan tray
- B. On the side of the motherboard tray
- C. On top of the hard drive tray
- D. On the rear of the power supply
正解：B
解説：
Understanding the AOM Bracket in Supermicro MI300X Systems
TheAOM (Add-On Module) bracketis used to holdoptional expansion cards, such as:
* RAID controllers
* Additional network interface cards (NICs)
* BMC/IPMI modules for system management
Why is the Screw Located on the Side of the Motherboard Tray?
* The AOM bracket is secured to the chassis via a single screwthat is located on theside of the motherboard tray.
* This designkeeps the bracket firmly in placewhile still allowing foreasy removal when needed.
* Removing the screw first prevents unnecessary strain on the bracketand ensuressafe removal of the AOM card.
Why Other Options Are Incorrect?
* A (On top of the hard drive tray)# The hard drive tray does not secure the AOM bracket.
* B (On top of the fan tray)# Fans do not hold down the AOM bracket.
* D (On the rear of the power supply)# The power supplyis not directly connected to the AOM bracket.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Expansion Module Guidespecifies that theAOM bracket is secured by a single screw located on the side of the motherboard tray.
質問 # 21
Exhibit:
The 2 cables attached to the midplane on the side closest to the PCIe tray that need to be removed are the I2C cable and power cable. True or False?
- A. False
- B. True
正解：B
解説：
Themidplane in Supermicro MI300X GPU systemsis responsible for interconnecting several system components. The twoprimary cablesthat must be removed before handling themidplaneare:
* I2C Cable (Inter-Integrated Circuit Cable)
* This cable is used forsensor data, system monitoring, and thermal control.
* If not disconnected, it couldsnap or cause sensor miscommunicationbetween the motherboard and the backplane.
* Power Cable
* This cablesupplies powerto the midplane andmust be disconnected before removalto avoid electrical damage.
* Removing the midplanewhile power cables are still attachedcould short-circuit the system.
Why is this step necessary?
* Supermicro's official documentation states that both the I2C and power cables must be disconnected before handling the midplane.
* Failure to remove these cables properly can cause permanent damage to connectors and the system board.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Maintenance Manualconfirms thatdisconnecting the I2C and power cables is mandatory before midplane removal.
質問 # 22
Before removing the midplane from the AS-8125GS-TNMR2, you must disengage all the power supply units (PSUs) and dummy PSUs, as well as the PCIe tray, motherboard tray, and GPU tray. True or False?
- A. False
- B. True
正解：B
解説：
Removing themidplanein aSupermicro MI300X GPU systemrequiresdisengaging multiple system trays and power componentsbeforehand.
Why is this necessary?
* Power must be fully disengaged before midplane removal
* The midplane is directly connected topower distribution units (PDUs).
* If power is not removed, it can causeshort circuits or hardware damage.
* PCIe, motherboard, and GPU trays block access
* These trays must be disengagedbefore removing the midplane, as they contain components directly connected to it.
* Dummy PSUs must also be removed
* Even inactive PSUs containlocking mechanismsthat must be disengaged.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 System Removal Guideconfirms thatPSUs, dummy PSUs, PCIe trays, motherboard trays, and GPU trays must be removed before handling the midplane.
質問 # 23
You will need to remove 6 screws from the sides of the chassis in order to remove the midplane bracket.
True or False?
- A. False
- B. True
正解：B
解説：
Themidplane bracket in Supermicro MI300X GPU systemsis secured with6 screwsthat must beremoved before disassembly.
Why 6 screws?
* 3 screws on each side of the chassishold the midplane bracket in place.
* This design helps stabilize the midplaneand prevents movement.
* Failure to remove all 6 screws can result in forcefully damaging the bracket.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Disassembly Manualspecifies that6 screws must be removed before handling the midplane bracket.
質問 # 24
Exhibit:
What is the proper way to remove the backplane from the motherboard tray?
- A. Use one hand to grab one side of the motherboard tray and rip the backplane out.
- B. Use both hands to tilt the top of the backplane towards you and lift it up and out of the motherboard tray.
- C. Ask a data center technician to remove it for you.
- D. Hold the start button and press left and right buttons to get more lives.
正解：B
解説：
Thecorrect and safemethod to remove the backplane from the motherboard tray is to useboth hands, gently tilting thetop of the backplanetowards yourself while carefullylifting it up and outof the motherboard tray.
This ensures that:
* No undue forceis applied to the connectors or PCB.
* No components or cablesare unintentionally damaged.
* Proper handling of static-sensitive componentsis maintained.
Removing the backplane improperly can result in:
* Connector damageto the motherboard or backplane.
* PCB warping, which could lead to future malfunctions.
* Potential data center downtimedue to component failure.
According toSupermicro's official documentation, this method aligns withindustry best practicesand recommended service proceduresforSupermicro MI300X GPU systems.
質問 # 25
How many screws need to be loosened across the bracket in the bottom of the motherboard tray in front of the backplane?
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
解説：
When servicing theSupermicro MI300X GPU system, there are3 screwssecuring thebracket at the bottom of the motherboard trayin front of the backplane.
Purpose of these screws:
* They secure the backplane's structural integrityto prevent vibration-related failures.
* Loosening them allows the removal or replacement of backplane componentssafely.
* They prevent accidental disconnectionscaused by handling or system movement.
Why other options are incorrect?
* A (13 screws)# This number istoo highfor just the bottom bracket.
* B (21 screws) & C (30 screws)# These numbersapply to entire system disassembly, not just the bottom bracket.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Disassembly Guidespecifies thatonly 3 screwsneed to be loosened to access thebottom bracket securing the backplane.
質問 # 26
When securing the PCIe tray, why must it be screwed in at one end of the chassis first before installing another tray at the opposite end?
- A. Because the tray will get pushed out
- B. Because the cables in the tray will get in the way
- C. Because the tray will break
- D. Because the tray will not function
正解：A
解説：
Why Secure One End of the PCIe Tray First?
* TheSupermicro MI300X chassis is designed for modular tray installation, meaningsecuring one end firstensures:
* Proper alignment of PCIe slots and connectors
* Stable mountingto prevent unwanted movement
* Prevention of unnecessary strain on installed expansion cards
What Happens If Both Ends Are Handled at the Same Time?
* ThePCIe tray may shift out of alignment, making it difficult to properly install other components.
* Misalignment can cause:
* PCIe devices to not seat properly
* Power or data cables to be obstructed
* Increased risk of mechanical damage during reinstallation
Step-by-Step Correct Installation Process:
#Step 1:Align the PCIe tray with its designated mounting slots.#Step 2:Secure screws onone end firstto hold the tray in place.#Step 3:Adjust the other end and ensureproper seatingbefore fully tightening all screws.# Step 4:Reconnect all PCIe cables and verify system connectivity.
Why Other Options Are Incorrect?
* B (Cables getting in the way)# While cable management is important, the main issue istray movement
, not cable obstruction.
* C (Tray will not function)# The tray will functiononce properly seated, butincorrect installation can lead to PCIe misalignment.
* D (Tray will break)# The tray is designed for durability; it will not break unlessexcessive force is applied.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Service Guideconfirms thattrays must be secured at one end first to ensure proper alignment.
質問 # 27
Why is there a yellow warning label on the flat panel/ribbon cable?
- A. To warn you that you can optionally remove the flat panel cable before removing the midplane from the chassis or you will damage the cable.
- B. To warn you that the cable is hot.
- C. To warn you that you must remove the flat panel cable after removing the midplane from the chassis or you will damage the cable.
- D. To warn you that you must remove the flat panel/ribbon cable before removing the midplane from the chassis or you will damage the cable.
正解：D
質問 # 28
Why is there a yellow warning label on the flat panel/ribbon cable?
- A. To warn you that you can optionally remove the flat panel cable before removing the midplane from the chassis or you will damage the cable.
- B. To warn you that the cable is hot.
- C. To warn you that you must remove the flat panel cable after removing the midplane from the chassis or you will damage the cable.
- D. To warn you that you must remove the flat panel/ribbon cable before removing the midplane from the chassis or you will damage the cable.
正解：D
解説：
Theyellow warning labelis a critical indicator toprevent damagewhen servicing themidplane and ribbon cable connections.
Reason for Warning Label:
* Theflat panel/ribbon cable is delicateand isconnected between multiple system components.
* If themidplane is removed first, itstretches and applies force on the ribbon cable, leading to:
* Broken cable connectors
* Torn ribbon cable
* System interface failure(front panel controls, LED indicators, or data communication) Why other options are incorrect?
* A (Cable is hot)# Ribbon cablesdo not generate heatand thisis not the purpose of the warning label.
* B (Remove after midplane)# Thecable must be removed BEFORE the midplane, not after.
* C (Optional removal)#It is mandatory, not optional, to prevent damage.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Maintenance Manualstates thatremoving the flat panel/ribbon cable firstisa required stepbefore handling the midplane.
質問 # 29
Which cable connecting the AOM card to the motherboard is NOT a data cable?
- A. SAS cable
- B. Power cable
- C. MCIO cables
- D. JNCIS1
正解：B
解説：
Thepower cableis the only cable that isnot a data cablewhen connecting an AOM card to the motherboard.
Cable Functionality Breakdown:
* A (Power Cable) # NOT a data cable
* Supplies electrical powerto the AOM card.
* Doesnot transmit databetween components.
* B (MCIO Cables) # Data cables
* These cablestransmit high-speed NVMe data.
* C (JNCIS1) # Data cable
* This interface is used formanagement and communication.
* D (SAS Cable) # Data cable
* Used fordata storage connections.
Official Documentation Reference:
* Supermicro AOM Expansion Module Guidestates that thepower cable is the only non-data cablein AOM installations.
質問 # 30
Exhibit:
When installing the midplane bracket back into the chassis, what design feature in the chassis helps you properly align the midplane bracket?
- A. Guide stickers in the chassis
- B. Grooves in the chassis
- C. Arrows in the chassis
- D. Velcro in the chassis
正解：B
解説：
Why Do Supermicro Systems Use Grooves for Alignment?
InSupermicro MI300X systems, themidplane bracket is aligned using built-in grooves in the chassis.
* Ensures Perfect Alignment
* The midplane mustline up perfectlywith power, PCIe, and data connections.
* Grooves act as physical guides, ensuringprecise placementwithout guesswork.
* Prevents Installation Errors
* Without grooves, technicians mightinstall the midplane slightly misaligned, leading to connection failures.
* Ensures PCIe and MCIO lanes align correctly, preventing signal loss.
* Supports a Tool-Free Installation
* Grooves allowdrop-in installation, reducingmanual adjustments.
* Minimizes risk of flexing or damaging the midplane PCB.
Why Other Options Are Incorrect?
* A (Guide stickers in the chassis)# Stickersmay be present for labeling but do not physically align the midplane.
* C (Arrows in the chassis)# Arrows arevisual indicators only, not physical alignment tools.
* D (Velcro in the chassis)# Velcro isnot used in midplane installation.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Hardware Guideexplicitly states thatgrooves in the chassis help with midplane bracket alignment.
質問 # 31
Before removing the NVMe backplane, which component must be removed first?
- A. GPU Tray
- B. PCIe Expansion Cards
- C. Power Supply Unit
- D. Motherboard Tray
正解：D
解説：
Why Must the Motherboard Tray Be Removed First?
TheNVMe backplane in Supermicro MI300X systemsis installedbehind the motherboard tray. This means themotherboard tray acts as a barrier, andit must be removed before gaining access to the NVMe backplane.
Step-by-Step Removal Process:
* Power Down and Disconnect Power Supply Units (PSUs)
* Turn off the system anddisconnect all power cablesto avoid electrical damage.
* Remove PCIe Expansion Cards(if applicable)
* Some systems have PCIe devicesmounted over the NVMe backplane, which must be removed first.
* Disengage the Motherboard Tray
* The motherboard tray must be unscrewed and carefully lifted outbefore accessing the NVMe backplane.
* Now, Remove the NVMe Backplane
* Once the motherboard tray is out, theNVMe backplane is fully exposed, allowing it to be removed.
Why Other Options Are Incorrect?
* A (GPU Tray)# The GPU tray isnot blocking direct accessto the NVMe backplane.
* C (Power Supply Unit)# The PSU isnot directly obstructingthe NVMe backplane, although it should be powered down.
* D (PCIe Expansion Cards)# These may need to be removedif installed over the NVMe backplane, but themotherboard tray is the primary component that blocks direct access.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Installation Guideexplicitly states thatthe motherboard tray must be removed before handling the NVMe backplane.
質問 # 32
In the example system configuration shown in the video, is there an AOM card in the right AOM bracket?
- A. Yes
- B. I didn't watch the video
- C. No
- D. Maybe
正解：C
解説：
TheAOM (Add-On Module) bracketis used to mount optional components like:
* RAID controllers
* Additional networking interfaces
* BMC/IPMI modules
In theexample system shown in the video, theright AOM bracket does not contain an AOM card. This is because:
* Supermicro's default system configurations do not always ship with optional AOM cards.
* Theleft AOM bracketusually housesoptional RAID or networking expansions, but theright bracket remains unoccupiedunless a specific expansion module is installed.
Official Documentation Reference:
* SupermicroHardware Deployment Guideconfirms that theright AOM bracket is optionalandnot pre- installedin base configurations.
質問 # 33
When installing the NVMe backplane back into the motherboard tray, what cables need to be reconnected?
- A. Only the MCIO cables need to be reconnected
- B. SATA cable, power cables, MCIO cables, 54-volt power cable
- C. Only the SATA cable needs to be reconnected
- D. Only the power cables need to be reconnected
正解：B
解説：
When reinstalling theNVMe backplane, several critical cables must be properlyreconnectedto ensure the system functions correctly.
Required Connections:
* SATA Cable# Some NVMe backplanesalso support SATA drives, requiring SATA connectivity.
* Power Cables# The NVMe backplanerequires direct powerto enable SSD operations.
* MCIO Cables# These cables providehigh-speed data connectivitybetween the NVMe drives and the motherboard.
* 54-Volt Power Cable# Thissupplies direct powerto the NVMe backplane foroptimal performance and stability.
Why other options are incorrect?
* B (Only SATA cable)# NVMe backplanes usePCIe-based storage. While SATA connectionsmay exist,they are not the only required cables.
* C (Only MCIO cables)# While MCIO cables are necessary for PCIe-based NVMe drives,power cables must also be reconnectedfor the system to function.
* D (Only power cables)#Data communication would failwithout MCIO connections, rendering the systemunable to detect NVMe drives.
Official Documentation Reference:
* Supermicro NVMe Service GuideandAS-8125GS-TNMR2 Installation Manualemphasize the correct reinstallation of power and data cablesto avoidhardware malfunctions.
質問 # 34
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