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Hardware

445 questions

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Question 161Question →

A technician is installing a high-performance PCIe x4 NVMe M.2 solid-state drive into an M.2 connector on a motherboard. Although the drive fits physically into the slot, the system's UEFI/BIOS fails to detect the storage device during POST. The technician reviews the motherboard manual and notices that the specific M.2 slot is designated for SATA protocol only. Which of the following best explains why the drive is not functioning?

Show answer & explanation

Answer: The M.2 connector on the motherboard lacks the required PCIe bus wiring for NVMe data transfer despite sharing a physical form factor format.

Answer

The M.2 connector on the motherboard lacks the required PCIe bus wiring for NVMe data transfer despite sharing a physical form factor format.
The correct option correctly identifies that while M.2 defines the physical size and connector format, motherboard M.2 slots are individually wired to specific bus protocols. An M.2 slot wired solely for SATA cannot communicate with an NVMe drive that relies on PCIe controller lines.

Step-by-Step Solution

1
Analyze the physical and logical interfaces described in the scenario.
Identified that the M.2 NVMe drive fits mechanically, but the motherboard documentation states the slot is wired strictly for the SATA protocol.
M.2 slots specify physical shape and keying, but the underlying data lines connected to the slot determine protocol compatibility (PCIe vs. SATA).
2
Evaluate the cause of non-detection in UEFI/BIOS.
An NVMe drive relies on PCIe lanes to communicate with the host controller. Because the slot only provides SATA bus communication lines, the NVMe drive cannot be recognized.
Physical compatibility does not guarantee electrical protocol compatibility on motherboard expansion slots.

Key Concept

M.2 Form Factor vs. Storage Protocols (SATA vs. NVMe)
Estimated Time:1m 15s
Question 162Question →

An IT technician is attempting to connect an older legacy computer with only a DB-15 (VGA) output port to a newly installed monitor that features only an HDMI input port. The technician connects the two devices using a passive VGA-to-HDMI adapter cable, but the monitor displays a "No Signal" message. Which of the following best explains the reason for this issue?

Show answer & explanation

Answer: VGA outputs an analog signal, whereas HDMI requires a digital signal; a passive cable cannot convert signal formats without an active powered converter.

Answer

VGA outputs an analog signal, whereas HDMI requires a digital signal; a passive cable cannot convert signal formats without an active powered converter.
VGA outputs an analog signal, while HDMI requires a digital signal. A simple passive cable only changes the connector pin arrangement; it lacks the electronic components required to digitize an analog signal into an HDMI-compatible digital signal. To connect an analog VGA source to a digital HDMI display, an active converter box powered via USB or external power is required.

Step-by-Step Solution

1
Identify the video output signal type of the computer port.
The DB-15 (VGA) port generates an analog video signal.
VGA is a legacy standard that transmits separate analog RGB voltage signals.
2
Identify the video input signal type of the monitor port.
The HDMI port requires a digital video signal.
HDMI relies on Transition-Minimized Differential Signaling (TMDS) digital streams.
3
Determine adapter requirements for signal conversion.
An active converter with a digital-to-analog or analog-to-digital processing circuit powered externally is required.
Passive adapter cables only reroute pins and cannot perform signal processing or digitization.

Key Concept

Passive vs. Active Video Signal Conversion (Analog VGA to Digital HDMI)
Question 163Question →

An IT technician is servicing a direct thermal receipt printer at a retail point-of-sale station that is producing faint and streaky printouts. Which of the following maintenance steps should the technician take to resolve this issue and maintain the printer? (Select TWO.)

Select all that apply

Show answer & explanation

Answer: Clean the thermal printhead using isopropyl alcohol and a lint-free swab.; Remove paper dust and residue from the paper feed roller assembly.

Answer

The technician should clean the thermal printhead with isopropyl alcohol and remove paper dust from the paper feed rollers.
Direct thermal printers function by applying heat directly from the printhead heating elements onto specially coated heat-sensitive paper. Cleaning the printhead with isopropyl alcohol removes baked-on paper residue and wax, while cleaning the feed rollers ensures smooth, uniform paper progression across the heating element.

Step-by-Step Solution

1
Inspect the thermal printer components.
Identified residue on the thermal printhead and paper dust on feed rollers causing faint, streaky prints.
Direct thermal printers rely on direct contact between clean heating elements, smooth roller traction, and heat-sensitive paper.
2
Clean the printhead and roller assembly.
Residue and paper debris are safely removed using isopropyl alcohol and lint-free swabs.
This restores proper heat conduction to the paper and ensures consistent paper feeding.

Key Concept

Thermal Printer Maintenance Procedures
Question 164Question →

A desktop technician is upgrading a workstation by installing a dedicated 250 W graphics expansion card alongside a high-performance multi-core CPU. Which of the following steps must the technician take to ensure proper power delivery and overall system stability? (Select TWO.)

Select all that apply

Show answer & explanation

Answer: Calculate total power supply requirements by summing the peak power draw of all components including CPU and GPU, plus an overhead safety margin.; Connect dedicated 6+2 pin or 8-pin PCIe power cables directly from the power supply unit to the graphics card auxiliary power connectors.

Answer

The technician must calculate total power requirements by summing the peak power consumption of all hardware components plus an overhead margin, and connect dedicated 6+2 pin or 8-pin PCIe auxiliary power cables directly from the power supply to the graphics card.
Accurately calculating PSU capacity requires summing peak consumption across all components including CPU and GPU with a safety overhead margin. Because PCIe expansion slots provide only up to 75 W, high-demand expansion cards must be connected directly to the PSU via 6+2 pin or 8-pin PCIe auxiliary power cables.

Step-by-Step Solution

1
Calculate total system wattage demand.
Add the CPU wattage, graphics card peak draw (250 W), storage drives, and fan power, then apply a 20–30% overhead margin.
Ensures the power supply unit can handle peak transient power demands without shutting down.
2
Identify motherboard PCIe slot power limitations.
Recognize that the motherboard slot delivers up to 75 W maximum, leaving 175 W to be supplied separately.
High-end graphics cards cannot function on slot power alone.
3
Attach auxiliary PCIe power cables.
Connect dedicated 6+2 pin or 8-pin PCIe power leads directly from the PSU into the graphics card power headers.
Supplies dedicated +12V power directly to the card to fulfill its high wattage requirements.

Key Concept

PCIe expansion card auxiliary power requirements and PSU wattage capacity calculation
Question 165Question →

A technician is upgrading the memory on an enterprise rackmount server. The system documentation explicitly specifies that the motherboard requires Registered DIMMs (RDIMMs) to handle high-density memory configurations. The technician accidentally installs Unbuffered DIMMs (UDIMMs) of the same DDR generation and speed rating. Which statement correctly explains why the server fails to complete Power-On Self-Test (POST)?

Show answer & explanation

Answer: RDIMMs feature an onboard register that buffers control and address signals to reduce electrical load on the memory controller, whereas UDIMMs lack this register and cannot function in motherboards requiring buffered memory.

Answer

RDIMMs feature an onboard register that buffers control and address signals to reduce electrical load on the memory controller, whereas UDIMMs lack this register and cannot function in motherboards requiring buffered memory.
Registered memory (RDIMM) contains a dedicated hardware register chip that buffers command and address signals between the system memory controller and the memory modules. This reduces the electrical load placed on the memory controller, allowing servers to support larger quantities of RAM. Server motherboards specified for RDIMMs cannot communicate with Unbuffered DIMMs (UDIMMs), causing the system to fail POST.

Step-by-Step Solution

1
Identify the memory requirements of the system board.
The enterprise server board requires Registered DIMMs (RDIMMs).
Enterprise servers using high-density RAM configurations depend on signal registers to maintain signal integrity and manage electrical load on the CPU memory controller.
2
Compare RDIMM (Registered) architecture to UDIMM (Unbuffered) architecture.
RDIMMs include an extra register chip between the memory controller and DRAM, whereas UDIMMs connect directly to the memory controller without buffering.
Motherboards designed specifically for RDIMMs expect the register interface during system initialization; installing UDIMMs results in a hardware initialization failure.
3
Determine the system behavior during hardware boot.
The server fails the Power-On Self-Test (POST) before loading the operating system.
Incompatible memory architecture prevents the motherboard firmware from establishing valid communications with RAM during early boot checks.

Key Concept

Registered DIMMs (RDIMMs) vs. Unbuffered DIMMs (UDIMMs)
Estimated Time:1m 0s
Question 166Question →

An IT technician is setting up new desktop workstations in a conference room. The deployment guidelines require video interfaces capable of natively carrying both high-definition digital video and multi-channel digital audio over a single cable connection to integrated monitor speakers. Which of the following display cable standards fulfill these requirements? (Select TWO.)

Select all that apply

Show answer & explanation

Answer: DisplayPort; HDMI

Answer

DisplayPort and HDMI are the correct display standards because both natively support simultaneous transmission of digital video and multi-channel digital audio over a single cable.
Both DisplayPort and HDMI were designed modern digital display standards capable of carrying uncompressed/compressed digital audio alongside high-resolution video streams over a single physical cable.

Step-by-Step Solution

1
Identify the scenario requirements
The scenario requires cables that carry both digital video and multi-channel digital audio over a single connection.
The workstation configuration specifies integrated monitor speakers using a single video cable.
2
Evaluate each cable standard against signal capabilities
DisplayPort and HDMI natively support unified digital video and audio transport. DVI-D and VGA carry video signals only.
Standards like DVI-D (digital video only) and VGA (analog video only) require separate 3.5mm audio cables to output sound.

Key Concept

Display Interface Audio and Video Signal Capabilities
Question 167Question →

A field technician is assembling a high-performance desktop workstation and reviewing the motherboard power connections prior to cable management. Which TWO of the following statements correctly describe standard motherboard power connectors and their operational roles?

Select all that apply

Show answer & explanation

Answer: The main 24-pin ATX power connector supplies the primary voltage rails (+3.3V, +5V, and +12V) directly to the motherboard chipset and onboard buses.; The 8-pin EPS12V connector provides dedicated +12V power specifically to the CPU voltage regulator modules on the motherboard.

Answer

The two correct statements are: (1) The main 24-pin ATX power connector supplies the primary voltage rails (+3.3V, +5V, and +12V) directly to the motherboard chipset and onboard buses; and (2) The 8-pin EPS12V connector provides dedicated +12V power specifically to the CPU voltage regulator modules on the motherboard.
The 24-pin ATX connector delivers multi-voltage power (+3.3V, +5V, +12V) to the motherboard logic and expansion slots, while the 8-pin EPS12V connector delivers supplementary +12V power directly to the CPU power regulation system. Both of these statements correctly describe motherboard power standards.

Step-by-Step Solution

1
Identify the role of the primary P1 motherboard power connector.
The main 24-pin ATX power connector supplies multi-rail power (+3.3V, +5V, and +12V) across the motherboard PCB.
Motherboards require different DC voltages for chipset logic, PCIe slot power, and auxiliary circuits.
2
Identify the role of auxiliary CPU power connectors.
The 8-pin EPS12V connector supplies dedicated +12V power to the processor power phases.
Modern CPUs draw significant current that cannot be supplied solely through the primary 24-pin ATX connector.
3
Evaluate and discard distractor options regarding connector keying and pinouts.
Differentiate EPS12V (CPU) and PCIe (GPU) 8-pin connectors, noting that they use distinct pin arrangements and mechanical keying.
PCIe power cables provide +12V on different pin locations compared to EPS12V cables, making them non-interchangeable.

Key Concept

Motherboard Power Connector Standards and Voltage Delivery (24-pin ATX vs 8-pin EPS12V)
Question 168Question →

An IT support technician is setting up a new fused deposition modeling (FDM) 3D printer. During the initial test print, the extruded filament fails to adhere to the heated build bed and gathers into a tangled mass of plastic around the print head nozzle. Which of the following maintenance or calibration procedures should the technician perform first to resolve this issue?

Show answer & explanation

Answer: Calibrate the bed leveling and adjust the nozzle Z-offset.

Answer

Calibrate the bed leveling and adjust the nozzle Z-offset.
In FDM (Fused Deposition Modeling) 3D printing, first-layer adhesion depends on having a level build plate and a correctly calibrated Z-offset. If the nozzle is too far from the bed, the melted filament will not adhere to the surface and will warp or drag, creating a tangled mass of plastic.

Step-by-Step Solution

1
Identify the symptom
Extruded thermoplastic filament is not sticking to the build platform, causing print failure and filament bunching around the nozzle.
In FDM 3D printing, poor first-layer adhesion is almost always caused by an incorrect distance between the nozzle tip and the print bed.
2
Determine the appropriate hardware maintenance/calibration action
Level the build plate and adjust the Z-offset distance.
Setting the proper initial Z-offset ensures the filament is squished slightly onto the build plate for proper adhesion.

Key Concept

FDM 3D Printer Bed Leveling and First-Layer Adhesion Maintenance
Question 169Question →

A system integrator is calculating the power requirements for a video rendering workstation. The rated peak power draws for the selected system components are as follows:

- Processor (CPU): 140 W140\text{ W}
- Graphics Processing Unit (GPU): 310 W310\text{ W}
- Motherboard and RAM: 50 W50\text{ W}
- Solid-State Drives and Cooling Fans: 40 W40\text{ W}

To ensure stable operation under full workload and allow for component longevity, the specification mandates a minimum safety headroom of 20%20\% above the total peak power draw. What is the minimum power supply unit (PSU) wattage rating required to satisfy this specification?

Show answer & explanation

Answer: 648 W648\text{ W}

Answer

The minimum power supply unit rating required is 648 W648\text{ W}.
The correct option is 648 W648\text{ W}. Sizing a power supply requires identifying the total maximum power consumption of all internal components (140 W+310 W+50 W+40 W=540 W140\text{ W} + 310\text{ W} + 50\text{ W} + 40\text{ W} = 540\text{ W}) and applying the required 20%20\% safety overhead (540 W×1.20=648 W540\text{ W} \times 1.20 = 648\text{ W}).

Step-by-Step Solution

1
Sum the peak power consumption of all system components
Total peak draw = 140 W(CPU)+310 W(GPU)+50 W(Motherboard/RAM)+40 W(Drives/Fans)=540 W140\text{ W} (CPU) + 310\text{ W} (GPU) + 50\text{ W} (Motherboard/RAM) + 40\text{ W} (Drives/Fans) = 540\text{ W}
Before sizing a power supply, the combined baseline electrical load of all installed hardware must be established.
2
Calculate the 20% safety headroom requirement
Safety multiplier = 1.00+0.20=1.201.00 + 0.20 = 1.20
Power supplies operate most efficiently and reliably when not running at 100% capacity continuously.
3
Multiply total peak consumption by the safety factor
Minimum PSU capacity = 540 W×1.20=648 W540\text{ W} \times 1.20 = 648\text{ W}
This establishes the minimum continuous wattage rating required for the power supply unit.

Key Concept

Calculating Power Supply Unit Wattage and Safety Headroom
Question 170Question →

An IT support technician is organizing preventive maintenance tasks across a company's varied printer fleet. Match each maintenance activity on the left with its corresponding printer technology on the right.

Click a left item, then click its matching right item

Items

Replacing a maintenance kit containing a fuser assembly, transfer roller, and paper pickup rollers
Cleaning the printhead heating element with isopropyl alcohol and replacing heat-sensitive paper
Performing printhead nozzle alignment and replacing liquid ink cartridges
Replacing an inked fabric ribbon cassette and adjusting continuous tractor-feed paper

Matches

Show answer & explanation

Answer

Laser printer matches with replacing a fuser assembly, transfer roller, and pickup rollers; Direct thermal printer matches with cleaning the printhead heating element and replacing heat-sensitive paper; Inkjet printer matches with nozzle alignment and replacing liquid ink cartridges; Impact printer matches with replacing an inked fabric ribbon cassette and adjusting continuous tractor-feed paper.
Each printing technology relies on distinct mechanical components and consumables: laser printers use high-heat fuser assemblies and pickup rollers in maintenance kits; direct thermal printers apply thermal printhead heat directly onto specialty paper; inkjet printers utilize liquid ink tanks and printhead calibration; and impact printers utilize continuous tractor-feed paper with impact pins striking a fabric ink ribbon.

Step-by-Step Solution

1
Identify laser printer consumables and components.
Laser printers use toner cartridges along with maintenance kits containing fusers, transfer rollers, and pickup rollers.
These components experience thermal and mechanical wear during the electrophotographic printing process.
2
Identify direct thermal printer consumables and maintenance requirements.
Direct thermal printers use heat-sensitive chemically treated paper and no ink or toner.
Periodic maintenance requires wiping paper dust and residue off the thermal heating element using isopropyl alcohol.
3
Identify inkjet printer consumables and maintenance requirements.
Inkjet printers use liquid ink (pigment or dye) cartridges.
Clogged microscopic nozzles require automated head cleaning cycles and printhead alignment calibration.
4
Identify impact printer consumables and paper feed mechanisms.
Impact printers use fabric ink ribbons and continuous tractor-feed paper.
Solitary pins strike the inked ribbon against paper to produce text, ideal for multi-part carbon forms.

Key Concept

Printer Technologies and Consumables Maintenance
Question 171Question →

An IT technician upgrades a user's workstation monitor to a new display with a native resolution of 2560×14402560 \times 1440. The computer's graphics adapter is connected to the monitor using a single-link DVI-D cable. After powering on the display, the technician observes that the maximum selectable resolution in the operating system is capped at 1920×12001920 \times 1200 at 60 Hz60\text{ Hz}. Which of the following actions will allow the monitor to display at its full native resolution while maintaining a DVI connection?

Show answer & explanation

Answer: Replace the existing cable with a dual-link DVI-D cable.

Answer

Replacing the existing cable with a dual-link DVI-D cable provides the required bandwidth to support the 2560×14402560 \times 1440 native resolution.
Single-link DVI-D cables are physically constrained to a maximum resolution of 1920×12001920 \times 1200 at 60 Hz60\text{ Hz} due to carrying only one TMDS video link. Dual-link DVI cables utilize a second TMDS link across additional connector pins, doubling the available video data rate and enabling resolutions up to 2560×16002560 \times 1600 at 60 Hz60\text{ Hz}, which fully supports the monitor's native 2560×14402560 \times 1440 resolution.

Step-by-Step Solution

1
Identify the bandwidth limitation of single-link DVI-D interface.
Single-link DVI-D uses a single transmitter operating at a maximum clock rate that limits resolution to 1920×12001920 \times 1200 at 60 Hz60\text{ Hz}.
The observed symptom (1920×12001920 \times 1200 resolution cap on a 2560×14402560 \times 1440 native monitor) matches the physical bandwidth ceiling of a single-link DVI configuration.
2
Determine the cable specification required for resolutions above 1920×12001920 \times 1200 over DVI.
Dual-link DVI utilizes 24 digital pins (providing two TMDS links) to double the data throughput.
Dual-link DVI-D supports resolutions up to 2560×16002560 \times 1600 at 60 Hz60\text{ Hz}, meeting the display's 2560×14402560 \times 1440 requirement.

Key Concept

Single-Link vs. Dual-Link DVI Bandwidth Capabilities
Estimated Time:1m 0s
Question 172Question →

An IT support specialist is inventorying video cables and display adapter types across workstations in a corporate environment. Match each display connector standard on the left with its correct defining signal and functional characteristic on the right.

Click a left item, then click its matching right item

Items

DB-15 (VGA)
DVI-D Dual-Link
DVI-I Single-Link
DisplayPort

Matches

Show answer & explanation

Answer

DB-15 (VGA) matches the 15-pin legacy analog video description. DVI-D Dual-Link matches the digital-only connector with extra pins for double bandwidth. DVI-I Single-Link matches the integrated digital/analog connector with pins for passive VGA conversion. DisplayPort matches the VESA packet-based standard supporting MST daisy-chaining.
Each connector standard is uniquely paired based on signal transmission mode (analog vs. digital), pin layout, and supported architectural capabilities like MST daisy-chaining and dual-link bandwidth scaling.

Step-by-Step Solution

1
Identify physical and signal capabilities of VGA (DB-15).
VGA uses a 15-pin connector arranged in three rows and transfers analog-only video.
VGA has no digital capability and carries no audio signal.
2
Differentiate DVI-D from DVI-I and Single-Link from Dual-Link.
DVI-D is digital-only. Dual-Link expands pin connections to double bandwidth. DVI-I includes 4 analog pins around the flat grounding blade, allowing a simple passive adapter to extract analog RGB for VGA.
DVI-D lacks the four analog pin holes around the flat blade present in DVI-I.
3
Identify VESA packet-based video standards and features.
DisplayPort sends data in packets (similar to Ethernet) and supports Multi-Stream Transport (MST) to connect multiple displays via a single DP output port.
MST daisy-chaining is a native feature of DisplayPort specifications.

Key Concept

Identifying pin configurations, signal types (analog vs. digital), and interface capabilities of video cables and connectors.
Question 173Question →

A technician is configuring hardware components and power connections for a workstation build. Match each expansion interface or power supply connector on the left with its correct technical specification or power delivery function on the right.

Click a left item, then click its matching right item

Items

PCIe 6+2 pin connector
EPS12V 8-pin connector
PCIe x16 slot
Molex 4-pin connector

Matches

Show answer & explanation

Answer

PCIe 6+2 pin connector matches auxiliary GPU power (up to 150 W); EPS12V 8-pin connector matches dedicated motherboard CPU power; PCIe x16 slot matches direct motherboard bus power (up to 75 W); Molex 4-pin connector matches peripheral drive and fan power (+5V and +12V).
Each connector and interface serves a distinct power role in PC architecture: PCIe 6+2 connectors supply auxiliary power up to 150 W to demanding expansion cards, EPS12V supplies CPU power, the PCIe slot itself provides up to 75 W through motherboard traces, and 4-pin Molex supplies dual-voltage power to legacy peripherals.

Step-by-Step Solution

1
Identify PCIe expansion auxiliary power requirements
Recognize that PCIe 6+2 pin connectors supply auxiliary power to high-power cards (up to 150 W for an 8-pin connection).
High-end GPUs require more wattage than the slot alone can deliver.
2
Distinguish processor power from PCIe auxiliary power
Map EPS12V 8-pin connector to dedicated processor power.
EPS12V supplies high-current +12V power directly to the CPU voltage regulator module on the motherboard.
3
Determine slot-supplied motherboard power capacity
Map the PCIe x16 slot to 75 W motherboard bus power.
PCI Express specifications dictate that standard motherboard slots provide a maximum of 75 W directly to the card without needing external cables.
4
Identify legacy peripheral connector standards
Map the Molex 4-pin connector to peripheral drive and fan power delivering +5V and +12V.
Molex connectors feature pinouts for both 5-volt and 12-volt direct current applications.

Key Concept

Understanding PSU connector types, pinouts, and expansion slot power capabilities.
Estimated Time:1m 30s
Question 174Question →

A technician is installing a new high-performance graphics expansion card into a desktop workstation. Upon powering on the system, the computer fans spin, but the system displays an on-screen warning stating that auxiliary power is missing for the expansion card. The technician notices an available 8-pin cable labeled EPS12V originating from the power supply unit (PSU). Which of the following actions should the technician take to properly power the expansion card?

Show answer & explanation

Answer: Connect a dedicated PCIe 6+2 pin power cable from the power supply directly to the expansion card.

Answer

The technician should connect a dedicated PCIe 6+2 pin power cable from the power supply directly to the expansion card.
Connecting a dedicated PCIe 6+2 pin auxiliary power cable is correct because PCI Express expansion cards requiring more than the 75 W75\text{ W} provided by the motherboard slot rely on standardized PCIe power cables directly from the PSU.

Step-by-Step Solution

1
Identify the power requirement for the PCIe expansion card.
Recognize that a PCIe x16 expansion slot delivers up to 75 W75\text{ W} directly from the motherboard bus, so higher-draw expansion cards require dedicated auxiliary power connectors.
The system warning indicates the expansion card is not receiving its required supplemental wattage.
2
Distinguish between PSU connector pinouts.
Differentiate between an EPS12V 8-pin connector (intended for CPU power on the motherboard) and a PCIe 6+2 pin connector (intended for expansion cards).
EPS12V and PCIe 8-pin connectors have different pinouts and square/rounded keying patterns to prevent improper cross-connection.
3
Select and attach the appropriate cable.
Locate and connect a dedicated PCIe 6+2 pin cable from the PSU to the expansion card auxiliary power header.
This supplies the necessary supplementary voltage and amperage safely to the expansion card.

Key Concept

PCIe Auxiliary Power vs CPU EPS12V Power Connectors
Question 175Question →

A field technician is servicing a compact All-in-One (AiO) desktop system that requires a RAM capacity expansion. The technician attempts to install a full-sized 288-pin DDR4 Unbuffered DIMM, but finds that the module is physically too long to fit into the motherboard's memory expansion slots. Which of the following RAM form factors is required for this system?

Show answer & explanation

Answer: SO-DIMM

Answer

SO-DIMM is the required memory form factor for compact and All-in-One desktop systems.
SO-DIMM (Small Outline Dual In-line Memory Module) is the compact physical form factor specifically designed for space-constrained computing environments, including laptops, small form-factor PCs, and All-in-One desktops.

Step-by-Step Solution

1
Identify the physical constraint described in the scenario.
The motherboard slot is too short to accept a full-sized 288-pin desktop DIMM module.
Compact chassis designs like laptops and All-in-One PCs utilize smaller physical memory slots.
2
Determine the standard smaller memory form factor used in compact computers.
SO-DIMM (Small Outline DIMM) modules are explicitly engineered with shorter lengths (e.g., 260-pin for DDR4) for high-density, space-restricted systems.
Full-sized DIMMs (UDIMM and RDIMM) cannot physically fit or latch into SO-DIMM expansion slots.

Key Concept

RAM Form Factors (DIMM vs. SO-DIMM)
Estimated Time:1m 0s
Question 176Question →

A shipping warehouse relies on an impact printer using continuous tractor-fed paper to produce three-part carbonless delivery receipts. A technician observes that text printed on the top copy is crisp and legible, but the duplicate and triplicate copies underneath are extremely faint. Which of the following is the most appropriate action to resolve this issue?

Show answer & explanation

Answer: Adjust the printhead position lever closer to the platen.

Answer

Adjust the printhead position lever closer to the platen.
Adjusting the printhead gap lever closer to the platen decreases the distance between the impact pins and the multi-part paper. This ensures sufficient mechanical pressure is applied during strikes to clearly mark the underlying carbonless copies.

Step-by-Step Solution

1
Analyze the symptom across the multi-part form.
The top sheet is legible, confirming ink availability, but underlying carbonless sheets lack sufficient impact pressure.
Impact dot-matrix printers rely on physical pin strikes to transfer pressure through carbonless copy paper.
2
Identify the printer component that controls impact clearance for varying paper thickness.
The printhead gap lever adjusts the physical distance between the printhead and the platen roll.
Decreasing the gap ensures pins strike with enough mechanical force to mark lower multi-part copies.

Key Concept

Impact Printer Maintenance and Multi-part Form Calibration
Estimated Time:1m 15s
Question 177Question →

A field technician is configuring chassis cabling and internal motherboard headers during a workstation upgrade. Match each motherboard internal connector or header on the left with its correct physical specification or functional role on the right.

Click a left item, then click its matching right item

Items

19/20-pin USB 3.2 Gen 1 Header
Front Panel HD Audio Header
USB 3.2 Gen 2x2 Type-E Header
System Panel Header Block

Matches

Show answer & explanation

Answer

19/20-pin USB 3.2 Gen 1 Header matches Keyed rectangular dual-row pin block used to power and transmit data for up to two front-panel USB Type-A ports; Front Panel HD Audio Header matches 10-pin layout (with pin 8 key missing) supporting dynamic jack-sensing for front panel 3.5mm audio ports; USB 3.2 Gen 2x2 Type-E Header matches Compact, latching internal port specifically designed to connect a chassis front-panel USB Type-C port supporting transfer rates up to 20 Gbps; System Panel Header Block matches Cluster of individual low-voltage pin pairs connecting the chassis power switch, reset switch, storage activity LED, and system status LED.
Each internal motherboard connector has distinct mechanical shapes, pin counts, and functional parameters. The 19/20-pin header supports two USB Type-A ports; the HD Audio header uses standard 10-1 pin layout with dynamic sensing; the Type-E connector provides a high-speed internal connection dedicated to front-panel USB-C ports; and the System Panel header groups chassis control switches and status indicators.

Step-by-Step Solution

1
Identify the physical structure and functional capability of the 19/20-pin USB 3.2 Gen 1 header.
Confirm it connects front-panel USB Type-A ports using a dual-row keyed shroud.
USB 3.0/3.2 Gen 1 internal cables require 19 active pins in a 20-pin footprint to drive two ports.
2
Identify the pinout and feature set of the Front Panel HD Audio Header.
Match it with the 10-pin block (pin 8 keyed/missing) featuring dynamic jack detection.
Intel's HD Audio standard specifies jack detection and retasking over older static wiring.
3
Differentiate the internal USB Type-E header from standard pin headers.
Associate it with internal USB Type-C front panel ports supporting high-speed bandwidth (up to 20 Gbps).
Type-E internal connectors were designed specifically to accommodate reversible Type-C front ports.
4
Identify the multi-connector pin group responsible for chassis switches and indicators.
Match the System Panel Header Block with individual pin pairs for power/reset switches and status LEDs.
Front panel connectors rely on individual 1-pin or 2-pin motherboard headers for chassis control.

Key Concept

Motherboard internal header physical identification and functional roles
Question 178Question →

A field technician responds to a support ticket regarding a departmental laser printer. Users report that printed text and images appear sharp and complete, but the toner easily smudges or wipes off the page when touched. Which of the following components is most likely failing and requires replacement?

Show answer & explanation

Answer: Fuser assembly

Answer

Fuser assembly
The fuser assembly uses heat and pressure to melt toner into the fibers of the paper during the final stage of electrophotographic printing. If the heating element or pressure rollers inside the fuser malfunction, toner is deposited onto the page correctly during transfer but fails to adhere, resulting in text that smudges or rubs off effortlessly.

Step-by-Step Solution

1
Analyze the symptom reported by users
Toner prints clearly on paper but rubs off easily when touched.
This indicates toner is being deposited accurately but is not bonding to the paper.
2
Map the symptom to the electrophotographic (EP) printing cycle steps
The fusing step occurs last in the EP process to bond toner particles permanently.
Heat and pressure provided by the fuser rollers permanently adhere toner to paper fibers.
3
Identify the failing hardware component
The fuser assembly is defective or failing to reach proper operating temperature.
Replacing the fuser assembly restores necessary heat and pressure for permanent toner adhesion.

Key Concept

Electrophotographic (EP) Laser Printing Fusing Phase Maintenance
Question 179Question →

A technician is setting up a laptop at a workstation equipped with a dual-monitor USB Type-C docking station. When the technician connects the laptop to the dock using a spare USB Type-C charging cable found in an office drawer, the laptop indicates it is receiving power, but neither of the external displays detects a video signal. Connecting the dock with the manufacturer's original cable immediately resolves the issue. Which of the following best explains why the spare USB Type-C cable failed to transmit video?

Show answer & explanation

Answer: The spare cable lacks the necessary internal high-speed wiring to support DisplayPort Alternate Mode data transmission.

Answer

The spare cable lacks the necessary internal high-speed wiring to support DisplayPort Alternate Mode data transmission.
USB Type-C uses DisplayPort Alternate Mode (Alt Mode) to transmit video data. This functionality requires a full-featured USB Type-C cable that contains physical wiring for the high-speed differential lanes. Simple USB Type-C charging cables only contain wires for power delivery and USB 2.0 data, rendering them incapable of carrying video signals to external monitors.

Step-by-Step Solution

1
Analyze the physical connector vs feature capability of USB Type-C cables.
Recognize that while all USB Type-C cables share the same physical connector shape, internal pin wiring and bandwidth capabilities vary widely.
Basic charging cables often carry only USB 2.0 signal wires along with high-amperage power lines, omitting the high-speed differential pairs required for video.
2
Identify the protocol used for video transmission over USB Type-C.
DisplayPort Alternate Mode (Alt Mode) uses the high-speed lanes inside a fully featured USB Type-C cable to route native DisplayPort video signals to the dock.
Without a fully featured cable wired for high-speed data lanes, Alt Mode negotiation fails and no video is output to external monitors.

Key Concept

USB Type-C Alternate Mode and Cable Feature Variance
Estimated Time:1m 15s
Question 180Question →

A field technician is upgrading the system memory on a high-performance desktop workstation that supports dual-channel DDR4 memory architecture. The motherboard features four memory slots labeled Slot 1, Slot 2, Slot 3, and Slot 4, organized into two separate memory channels (Channel A: Slots 1 & 2; Channel B: Slots 3 & 4). Which TWO of the following configurations or requirements must be met to ensure the system operates in dual-channel mode? (Select TWO.)

Select all that apply

Show answer & explanation

Answer: Install matched memory modules across both Channel A and Channel B (such as Slot 1 and Slot 3).; Ensure the installed memory modules have identical capacities, clock speeds, and timing specifications.

Answer

To enable dual-channel memory architecture, the technician must populate matching slots across both memory channels (e.g., Slot 1 in Channel A and Slot 3 in Channel B) and use memory modules with identical capacity, speed, and timing specifications.
Dual-channel memory operation requires installing matching memory modules across different memory channels (e.g., one in Channel A and one in Channel B) with identical capacity, clock speed, and timing characteristics.

Step-by-Step Solution

1
Identify memory channel slot configurations in the motherboard documentation.
Determine that Channel A consists of Slots 1 & 2 and Channel B consists of Slots 3 & 4.
Populating one module in Channel A and one module in Channel B is necessary to split memory throughput across two independent 64-bit buses.
2
Select matching DDR4 DIMM memory modules.
Verify that both modules match in form factor (288-pin DIMM), capacity, speed, and latency.
Mismatched specifications or improper channel population force the memory controller to downclock or default to single-channel operation.

Key Concept

Dual-Channel Memory Slot Population and Matching Module Specifications
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Hardware Practice Questions — CompTIA A+ (Core 1 & Core 2) — Page 9 | Examkin