New 2026 Realistic Free Supermicro SMI300XS Exam Dump Questions and Answer
SMI300XS Practice Test Engine: Try These 44 Exam Questions
NEW QUESTION # 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
Answer: D
Explanation:
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.
NEW QUESTION # 26
You will need to remove 6 screws from the sides of the chassis in order to remove the midplane bracket.
True or False?
- A. True
- B. False
Answer: A
Explanation:
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.
NEW QUESTION # 27
The SKU for the NVMe backplane is BPN-NVME5-HS219N-S24. True or False?
- A. False
- B. True
Answer: A
Explanation:
* The SKU (Stock Keeping Unit) forSupermicro NVMe backplanesvaries depending on thespecific model and system configuration.
* Thecorrect SKU for the NVMe backplane used in the Supermicro MI300X system differs from the given part number.
* Referencingofficial Supermicro product sheets and service manuals, theBPN-NVME5-HS219N- S24 does not matchthe correct SKU for this system.
Official Documentation Reference:
* Supermicro NVMe Storage System Compatibility Guidelists the correct SKU for MI300X GPU systems, confirming that the given SKU is incorrect.
NEW QUESTION # 28
Exhibit:
What is the proper way to remove the backplane from the motherboard tray?
- A. Ask a data center technician to remove it for you.
- B. Hold the start button and press left and right buttons to get more lives.
- C. Use one hand to grab one side of the motherboard tray and rip the backplane out.
- D. Use both hands to tilt the top of the backplane towards you and lift it up and out of the motherboard tray.
Answer: D
Explanation:
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.
NEW QUESTION # 29
How can the 4 MCIO cables located in the center of the motherboard be released and unlocked?
- A. Press down on their release levers to unlock them
- B. Remove the screws holding down the MCIO cables
- C. Grip both sides of the orange connectors and pull really hard
- D. Loosen the bolts holding down the MCIO cables
Answer: A
Explanation:
Understanding MCIO Cables in Supermicro MI300X Systems
* MCIO (Multi-lane Cable I/O) connectorsare used forhigh-speed data transmission between the motherboard and NVMe SSDs or PCIe devices.
* These connectorsmust be handled carefully, as improper removal cancause pin damageorpermanent failure of the interface.
How to Properly Unlock and Release MCIO Cables
* Locate the release levers on the MCIO connectors
* Each MCIO connector has asmall built-in release leverthat locks it in place.
* Press down on the release levers
* This disengages the locking mechanism andallows the cable to slide out easily.
* Gently pull the MCIO cable straight out
* Do not pull at an angleas it can damage thehigh-density connector pins.
Why Other Options Are Incorrect?
* A (Pull really hard)# Forcing the connector without releasing the latch canbreak the MCIO pins or damage the motherboard socket.
* B (Remove screws)# MCIO cablesdo not use screws; they have built-in locking mechanisms.
* D (Loosen bolts)# There areno boltssecuring MCIO cables; only therelease lever is needed for unlocking.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Motherboard Manualstates thatpressing down on the release levers is the correct method to unlock MCIO cables.
NEW QUESTION # 30
What are the components on top of the motherboard in the AS-8125GS-TNMR2 system?(Choose 3 answers)
- A. Fans and fan shrouds
- B. Heatsinks and CPUs
- C. DIMM modules
- D. Support bar and AOM brackets
Answer: A,B,D
Explanation:
Components Located on Top of the Motherboard in Supermicro MI300X Systems
* Fans and Fan Shrouds (Option A)
* These are installedabove the motherboardtodirect airflow over the components.
* Fan shrouds help focus airflow, ensuringefficient cooling of CPUs and GPUs.
* Support Bar and AOM Brackets (Option B)
* Thesupport bar reinforces the motherboard tray, preventing flexing.
* AOM bracketshold optionalnetworking or RAID expansion modules.
* Heatsinks and CPUs (Option C)
* Large heatsinks are mounted on top of the CPUsto dissipate heat.
* These ensureoptimal thermal managementof high-performanceAMD MI300X GPUs and processors.
Why Option D (DIMM Modules) is Incorrect?
#DIMM modules (memory sticks) are installed in slots beside the CPU, but they arenot physically above the motherboardin a way that they could be considered a top-mounted component.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 System Overviewconfirms thatfans, heatsinks, AOM brackets, and support bars are mounted on top of the motherboard.
NEW QUESTION # 31
Before removing the midplane from the AS-8125GS-TNMR2, what are some of the required steps?
(Choose 2 answers.)
- A. Disengage and remove the fans and fan shutters
- B. Disengage and remove the MCIO cables from all system components
- C. Disengage and remove all the power supply units (PSUs) and dummy PSUs
- D. Disengage (but don't remove) the PCIe tray, motherboard tray, and GPU tray
Answer: C,D
Explanation:
Why Must PSUs Be Removed Before Midplane Removal? (Option A)
* Power must be fully disconnectedbefore handling the midplane to avoidelectrical damage.
* Themidplane is directly linked to the power distribution system, and removing it while PSUs are still connected can cause:
* Short circuits
* Residual electrical charge damage
* Connector arcing and failure
Why Must PCIe, Motherboard, and GPU Trays Be Disengaged? (Option C)
* These traysobstruct access to the midplane, meaning they must bedisengaged firstbefore midplane removal.
* While they do not need to becompletely removed, they must beloosened and moved slightlyto allow for safe midplane extraction.
Why Other Options Are Incorrect?
* B (Remove MCIO cables)#MCIO cables should be disengaged, but full removal is not required before midplane removal.
* D (Remove fans and fan shutters)# Fan assemblies are separate from the midplane anddo not need to be removedduring this step.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Disassembly Manualexplicitly states thatremoving PSUs and disengaging trays are necessary steps before midplane removal.
NEW QUESTION # 32
Why is there a yellow warning label on the flat panel/ribbon cable?
- A. To warn you that you must remove the flat panel cable after removing the midplane from the chassis or you will damage the cable.
- B. 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.
- C. 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.
- D. To warn you that the cable is hot.
Answer: B
Explanation:
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.
NEW QUESTION # 33
To remove the midplane, use both hands to lift the midplane bracket straight up and out of the chassis. True or False?
- A. True
- B. False
Answer: A
Explanation:
Understanding the Midplane in Supermicro MI300X Systems
Themidplane in the Supermicro MI300X GPU systemacts as acentral connection hubthat links various system components, such as:
* NVMe storage backplanes
* PCIe interconnects
* Power distribution pathways
* Motherboard to GPU communication lanes
Because of itsdelicate nature and multiple connectors,it must be removed carefullyto avoiddamaging fragile electrical contacts.
Correct Midplane Removal Process
Tosafely remove the midplane, follow theseSupermicro-recommendedsteps:
* Ensure all power is fully disconnected
* Shut down the systemproperly.
* Remove all power cablesanddisconnect all PSUs.
* Ground yourself using an anti-static wrist strapto preventelectrostatic discharge (ESD) damage to sensitive components.
* Detach all necessary trays and cables
* Disengage the PCIe tray, motherboard tray, and GPU trayto ensure clear access.
* Disconnect all MCIO cables, power cables, and ribbon cablesto prevent accidental pulling or tearing.
* Use both hands for removal
* Place both hands firmly on the midplane bracket.
* Lift the midplane bracket straight upto ensure a smooth removal process.
* Avoid angling or twisting the midplaneas this candamage its connector pins.
* Ensure no resistance is felt
* If the midplanedoes not lift easily,double-check for any remaining screws or connected cables before applying force.
Why Using Both Hands is Crucial?
* Prevents bending or flexing
* The midplane is alarge PCB with multiple connection points.Using both hands ensures even lifting pressure, preventing PCB bending.
* Avoids strain on connectors
* If removed at an angle, it canstress delicate connectors, leading to permanent damage.
* Ensures a firm grip
* Some components inside the systemcan be heavy. Using both handsensures stability and reduces risk of dropping.
Why Other Answers Are Incorrect?
* If False were correct, it would suggest improper handling techniques that can damage the system.
* Supermicro documentation clearly states that the midplane must be removed using both hands and in an upright motion.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Disassembly Guideinstructs technicians to useboth hands and lift straight upto prevent damage.
NEW QUESTION # 34
Exhibit:
When installing the midplane bracket back into the chassis, what design feature in the chassis helps you properly align the midplane bracket?
- A. Velcro in the chassis
- B. Arrows in the chassis
- C. Grooves in the chassis
- D. Guide stickers in the chassis
Answer: C
Explanation:
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.
NEW QUESTION # 35
Which cables need to be reconnected after installing the NVMe backplane?
- A. Only the Power Cable
- B. i2C Cable, SAS Cable, Power Cable
- C. Only the SAS Cable
- D. Only the i2C Cable
Answer: B
Explanation:
NVMe Backplane Connection Requirements in Supermicro MI300X Systems
Afterinstalling the NVMe backplane, the following cablesmust be reconnectedfor proper system functionality:
* i2C Cable(Inter-Integrated Circuit Cable)
* Responsible fordata communication, sensor monitoring, and system management functions.
* Ensures thatstorage devices are properly detectedby the motherboard.
* SAS Cable(Serial Attached SCSI)
* Used forhigh-speed storage connectivityin hybrid NVMe/SAS systems.
* Ensuresdata integrity and fast data transfers between SSDs and the system controller.
* Power Cable
* Supplies power to the NVMe backplaneandconnected drives.
* Without this,NVMe drives will not receive power and will not be detected by the system.
Why Other Options Are Incorrect?
* B (Only the SAS Cable)# While the SAS cable is important,the power cable and i2C cable are also required.
* C (Only the i2C Cable)# The i2C cable isnot sufficient by itself; the NVMe backplaneneeds both power and data connections.
* D (Only the Power Cable)# Power is needed, butdata connectivity through SAS and i2C is essential for full functionality.
Official Documentation Reference:
* Supermicro NVMe Storage System Guideconfirms thati2C, SAS, and power cables must all be reconnected after NVMe backplane installation.
NEW QUESTION # 36
You must remove the motherboard tray from the chassis before you can access the NVMe backplane.
True or False?
- A. True
- B. False
Answer: A
Explanation:
InSupermicro MI300X GPU systems, theNVMe backplane is located behind the motherboard tray, meaning the tray must be removed first.
Why is this step necessary?
* The NVMe backplane is physically secured behind the motherboard trayto support high-speed PCIe connectivity.
* Removing the motherboard tray provides clear accessto NVMe connectors and MCIO cables.
* Skipping this step may cause unnecessary strain on cables, leading to potential connector damage.
Official Documentation Reference:
* Supermicro Service Guide for NVMe Systemsconfirms that themotherboard tray must be removed firstbefore working on the NVMe backplane.
NEW QUESTION # 37
Before reinstalling the motherboard tray, what critical step should be taken to ensure proper installation?
- A. Shake the tray to confirm it fits properly
- B. Align the motherboard tray with the grooves in the chassis
- C. Tilt the motherboard tray at an angle before placing it
- D. Screw in the motherboard tray at random points before aligning it
Answer: B
Explanation:
Why Must the Motherboard Tray Be Aligned With the Grooves?
* TheSupermicro MI300X chassisis designed withbuilt-in alignment groovesthat helpprecisely position the motherboard tray.
* If the tray is notaligned properly:
* ThePCIe slots and mounting points will not line up correctly.
* Thebackplane connections may be misaligned, leading to system boot errors.
* Improper installation can block airflow, leading to potential overheating issues.
Step-by-Step Proper Reinstallation Process:
#Step 1:Identify thealignment grooveson the chassis.#Step 2:Slowly slide the motherboard tray into place, ensuring it follows the grooves.#Step 3:Verify that the tray sitsflushwith the chassis.#Step 4:Secure the tray with screws only after confirming proper alignment.
Why Other Options Are Incorrect?
* B (Shake the tray to confirm fit)# Shaking the traycan loosen connectors and potentially damage components.
* C (Screw in randomly before aligning)# If screws are installedbefore alignment, it can causeuneven seating and difficulty in securing other components.
* D (Tilt the motherboard tray at an angle)# The tray should be insertedstraight into the grooves, not at an angle.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Installation Guideconfirms thatthe motherboard tray must be aligned with the chassis grooves before securing it.
NEW QUESTION # 38
In the motherboard tray, the AOM bracket is partially covered by the support bar. So, you'll need to remove the support bar first before you can remove the AOM bracket. True or False?
- A. True
- B. False
Answer: A
Explanation:
Why Must the Support Bar Be Removed First?
* Thesupport baris areinforcement structureinside the chassis that providesmechanical stabilityto components, including theAOM bracket.
* Since the AOM bracket is partially covered by the support bar, you mustremove the bar firstto gain full access.
Step-by-Step Removal Process:
#Step 1:Remove the screws securing the support bar.#Step 2:Carefully lift and remove the support bar without tilting it.#Step 3:Now, unscrew and remove the AOM bracket.
Why is False Incorrect?
* IfFalse were correct, it would suggest that the AOM bracket can be removedwithout touching the support bar, which isnot possibledue to obstruction.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Disassembly Manualconfirms that thesupport bar must be removed first before accessing the AOM bracket.
NEW QUESTION # 39
After removing the screws from the midplane bracket, what cables must be removed?(Choose 2 answers.)
- A. SATA cable
- B. Power cable
- C. Flat panel/ribbon cable
- D. MCIO cable
Answer: C,D
Explanation:
Themidplane bracketinSupermicro MI300X GPU systemsconnects multiple crucial components, including storage, PCIe devices, and power distribution systems.
Why must the MCIO and Flat Panel/Ribbon cables be removed?
* MCIO Cable (Option B)#
* MCIO (Multi-lane Cable I/O)cables are responsible forhigh-speed NVMe communication between the motherboard and storage components.
* These cables must bedisconnected before midplane removal, asforcing them out without removal can cause connector damage.
* Flat Panel/Ribbon Cable (Option C)#
* Theflat panel/ribbon cableis used forsystem communication, front panel connectivity, or sensor data transmission.
* If not removed, it can be torn or pinched, leading tomalfunctioning front panel indicators, buttons, or management controllers.
Incorrect Answers Explained:
* A (Power cable)# Power cables are usuallysecured independentlyand arenot directly attached to the midplane bracket. Removing them isnot a required stepfor midplane bracket removal.
* D (SATA cable)# SATA cables arefor legacy storage systemsanddo not need to be disconnected unless working on SATA-specific backplanes.
Official Documentation Reference:
* SupermicroService ManualforAS-8125GS-TNMR2explicitly states thatMCIO cables and ribbon cables must be removed before handling the midplane bracketto preventsystem damage.
NEW QUESTION # 40
What equipment is required in order to remove the heatsink from the motherboard tray?
- A. T20 Torx bit
- B. T40 Torx bit
- C. PH2 Phillips screwdriver
- D. T30 Torx bit
Answer: D
Explanation:
To remove theheatsink from the motherboard tray,a T30 Torx bit is required. This tool ensuresproper torque applicationandprevents damageto both the heatsink and the motherboard.
Why a T30 Torx bit is necessary?
* Supermicro MI300X GPU systems use precision heatsink retention mechanisms.
* Theheatsink screws are secured with factory torque settingsand require aT30 Torx bitfor safe removal.
* Using an incorrect tool (Phillips screwdriver, T20, or T40) can strip the screw heads, making it difficult to remove the heatsink without causing damage.
Incorrect Answers Explained:
* A (PH2 Phillips screwdriver)# Not strong enough for heatsink screws, which requirehigh torquefor proper seating.
* C (T20 Torx bit)# Toosmall, risksstrippingthe screws.
* D (T40 Torx bit)# Toolarge, does not fit the heatsink screws.
Official Documentation Reference:
* Supermicro MI300X Service Manualspecifies that aT30 Torx bitmust be used to remove the heatsink without damaging the motherboard.
NEW QUESTION # 41
Exhibit:
Where are the 2 screws located before you can remove the air shroud?
- A. On both sides of the PCIe tray
- B. On both sides of the GPU tray
- C. On both sides of the motherboard tray
- D. On top of the motherboard tray
Answer: C
Explanation:
Theair shroudis a crucial component in theSupermicro MI300X GPU system, designed todirect airflow efficientlyover high-performance GPUs and CPUs.Before removing the air shroud, two screws must be removed, and they are located on both sides of the motherboard tray.
Why are these screws important?
* They secure the air shroud to the chassis, preventing unwanted movement.
* Removing them ensures the air shroud can be lifted safely, without damaging cooling pathways.
* They prevent vibrations from GPU cooling fans from dislodging the shroud over time.
Incorrect Answers Explained:
* A (On top of the motherboard tray)# Incorrect, as the screws are not mounted on top but on thesides of the motherboard tray.
* C (On both sides of the PCIe tray)# The PCIe tray does not secure the air shroud.
* D (On both sides of the GPU tray)# The GPU tray does not directly hold the air shroud in place.
Official Documentation Reference:
* Supermicro AS-8125GS-TNMR2 Cooling System Guidestates that theair shroud is secured by two screws on both sides of the motherboard tray.
NEW QUESTION # 42
Which cable connecting the AOM card to the motherboard is NOT a data cable?
- A. JNCIS1
- B. MCIO cables
- C. Power cable
- D. SAS cable
Answer: C
Explanation:
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.
NEW QUESTION # 43
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Supermicro SMI300XS Daily Practice Exam New 2026 Updated 44 Questions: https://drive.google.com/open?id=1o-DMYF-t-tF9uDstpo6ZmTOCpsftFgpA
