FC0-U71 Infrastructure Practice Test 10 — 15 Questions

Question 1

A user reports that their laptop display looks extremely dim even though the image is visible and the operating system is running normally. The screen becomes readable when a flashlight is aimed at it. Which component has most likely failed?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

The inverter or backlight. The telltale sign of a failed backlight or inverter is an image that is present but nearly invisible until external light strikes the screen. The panel and signal path still function, so the fault lies with the illumination subsystem rather than the GPU, cable, or digitizer.

Answer

The digitizer

Answer

The graphics processing unit

Answer

The display cable

Question 2

A user complains that their laptop battery drains rapidly even while plugged into a docking station that supports USB Power Delivery. The dock is connected with a cable that fits the USB-C port. Which of the following is the MOST likely cause?

Accepted Answer

The dock provides less power than the laptop requires under its current workload.. USB Power Delivery allows a charger and device to agree on a wattage both support. When the dock's maximum output is lower than what the laptop consumes during demanding tasks, the shortfall is drawn from the battery, so the charge level falls even though the dock is connected. Checking the dock's rated wattage against the laptop's power adapter rating reveals the mismatch.

Answer

The docking station is using the USB 2.0 protocol instead of USB 3.2.

Answer

The laptop's battery is failing and can no longer hold a charge.

Answer

The USB-C cable is a charge-only cable and cannot carry data.

Question 3

A small business wants to connect its office to a fiber internet service. The ISP provides an optical network terminal (ONT) that converts the fiber signal to Ethernet. The business needs a device that will route traffic between the internal LAN and the ISP, perform NAT, and provide DHCP to internal clients. Which device should the technician install between the ONT and the LAN switch?

Accepted Answer

A router. The device between an ONT and an internal switch must route packets, translate private addresses to the public address, and assign IP configuration to clients. A router provides all three functions at Layer 3. Switches, access points, and media converters operate at lower layers or serve different purposes and cannot fulfill the routing and NAT requirements of this scenario.

Answer

A media converter

Answer

A Layer 2 switch

Answer

A wireless access point

Question 4

A network administrator is documenting the physical topology of a new office. The design uses a central switch with a dedicated cable to every desk, and the administrator wants to describe the strengths of this layout. Which TWO characteristics accurately describe this topology? (Choose two.)

Accepted Answer

A single cable failure affects only the device connected to that cable. A star topology connects every device to a central switch through its own dedicated cable. This design isolates faults to individual links, so one damaged cable affects only that workstation. The trade-off is that the central switch becomes a single point of failure for the whole network. Shared backbones, cable-path interruptions, and looped traffic describe bus and ring topologies instead.

Answer

Adding a new workstation requires breaking the existing cable path

Answer

All devices share a single common backbone cable

Answer

Data travels in one direction around a closed loop

Question 5

A network administrator is configuring a small office network with 20 computers. The network must be easy to troubleshoot and resilient to a single cable failure. Which topology should the administrator implement?

Accepted Answer

Star topology. A star topology uses a central switch, so a single cable failure only affects one computer, and troubleshooting is straightforward by checking individual connections. It balances resilience and simplicity for a small office. Other topologies either lack resilience to single cable failures or are overly complex and costly.

Answer

Mesh topology

Answer

Bus topology

Answer

Ring topology

Question 6

A company is virtualizing several physical servers onto one host. The administrator wants to isolate each virtual machine so that a crash or resource spike in one does not affect the others, while still sharing the physical CPU and memory. Which technology should the administrator rely on?

Accepted Answer

A hypervisor. Virtual machines share a host's CPU and memory through a hypervisor, which enforces isolation so one VM's crash or resource spike does not disrupt the others. RAID, switches, and load balancers serve storage, networking, and traffic distribution roles respectively, but none of them virtualizes compute resources.

Answer

A load balancer

Answer

A RAID controller

Answer

A network switch

Question 7

A technician is troubleshooting a laptop that randomly shuts down during use and feels very hot near the vents. The technician suspects a thermal issue. Which TWO of the following actions are MOST appropriate to resolve the problem? (Choose two.)

Accepted Answer

Clean the cooling vents and fan with compressed air to remove dust buildup.. Cleaning the cooling vents and fan restores airflow, while reapplying thermal paste improves heat transfer from the CPU to the heatsink. Both actions directly address common causes of laptop overheating. Together they resolve thermal shutdowns caused by dust buildup and degraded thermal interface material, without unnecessary hardware replacement.

Answer

Increase the laptop's screen brightness to improve visibility during use.

Answer

Replace the hard drive with a solid-state drive to reduce heat generation.

Answer

Install additional RAM to reduce the workload on the processor.

Question 8

A technician must install an internal storage drive in a desktop that will hold the operating system and needs the fastest practical boot performance. The motherboard supports NVMe and has an available M.2 slot wired for PCIe. Which drive should the technician select?

Accepted Answer

An M.2 NVMe SSD. The M.2 slot is wired for PCIe, so an NVMe drive can use those lanes directly and deliver the highest throughput available in this system. SATA-based options, whether 2.5-inch or M.2 form factor, are capped by the slower SATA protocol, and a mechanical disk is slower still.

Answer

A 7200 RPM SATA hard disk

Answer

A 2.5-inch SATA SSD

Answer

An M.2 SATA SSD

Question 9

A technician is deploying a new desktop PC that must run several virtual machines for software testing. The PC has 32 GB of RAM and a processor with virtualization extensions. Which of the following must be enabled in the system firmware to allow the hypervisor to function?

Accepted Answer

Intel VT-x or AMD-V. Hardware-assisted virtualization depends on CPU extensions marketed as Intel VT-x or AMD-V. Firmware settings frequently ship with these disabled, and hypervisors check for them at startup. Enabling the extension in the UEFI or BIOS setup allows the hypervisor to create and run guest virtual machines efficiently, which is exactly what the testing desktop requires.

Answer

Secure Boot

Answer

TPM 2.0

Answer

UEFI network stack

Question 10

A technician is setting up a brand-new all-in-one desktop for a home user. The user wants to connect to the internet using the existing home router without running any cables. Which built-in capability should the technician verify is working?

Accepted Answer

Wi-Fi adapter. The user wants internet access without cables, so the desktop must have a working Wi-Fi adapter to connect to the home router wirelessly. Ethernet would require a cable, while Bluetooth and an optical drive do not provide network access at all. Only Wi-Fi meets the stated need.

Answer

Ethernet port

Answer

Optical drive

Answer

Bluetooth adapter

Question 11

A technician must install an operating system on a workstation that will run a virtual machine with direct access to a graphics card for CAD rendering. The physical CPU and motherboard support the required feature. Which setting must be enabled in the UEFI/BIOS for the virtual machine to use the GPU directly?

Accepted Answer

IOMMU (VT-d/AMD-Vi). Direct device assignment to a virtual machine requires the hypervisor to isolate and remap DMA transactions, which is the function of the IOMMU. Intel markets this as VT-d and AMD as AMD-Vi, and both must be enabled in firmware alongside CPU virtualization extensions. Secure Boot, TPM, and XMP serve security, cryptographic, and memory performance roles that do not enable GPU passthrough.

Answer

Secure Boot

Answer

XMP

Answer

TPM

Question 12

A user wants to connect a new external monitor to a laptop that has only USB-C ports. The monitor supports HDMI and DisplayPort inputs. The user needs to drive the monitor at its native resolution and also charge the laptop through the same connection. Which of the following should the technician recommend?

Accepted Answer

A USB-C docking station that supports DisplayPort Alt Mode and USB Power Delivery.. A USB-C docking station supporting DisplayPort Alt Mode and USB Power Delivery allows video output and laptop charging over a single USB-C cable. This satisfies both the monitor connection and charging requirements. It also provides a clean, single-cable solution that many modern laptops are designed to support.

Answer

A USB-C to HDMI adapter that supports video output.

Answer

A USB-A to HDMI cable connected through a USB hub.

Answer

A Thunderbolt 2 to HDMI adapter with a separate power brick.

Question 13

A user reports that their desktop computer will not power on. The technician confirms the wall outlet works, the power supply switch is set to the correct voltage, and the power button cable is connected to the motherboard. When the technician presses the power button, no fans spin and no lights illuminate. Which component should the technician test next to determine whether the power supply is functioning?

Accepted Answer

Power supply tester. When a desktop shows no fan movement and no lights despite a known-good outlet, the power supply is the most likely failure point. A PSU tester verifies the voltage on each rail without needing the motherboard to start. CMOS battery, RAM, and hard drive issues produce different symptoms and do not prevent the initial power-on sequence.

Answer

RAM module

Answer

CMOS battery

Answer

Hard drive

Question 14

A technician is preparing a desktop workstation for a user who needs to run several virtual machines locally for software testing. The host must have enough resources to keep the virtual machines responsive while the desktop remains usable. Which TWO hardware upgrades would most directly support this workload? (Choose two.)

Accepted Answer

A CPU with more cores. Running multiple virtual machines locally consumes processor cores and memory above what the host operating system needs. More cores let guests execute in parallel, and additional RAM prevents the host from paging virtual machine memory to disk. Graphics, power, and optical drive upgrades do not address the core resource demands of this workload.

Answer

A discrete graphics card

Answer

A larger power supply

Answer

A faster optical drive

Question 15

A small business is replacing its aging wired network with a wireless solution for 25 employees. The owner wants to reduce cabling costs while still supporting file sharing and printing. Which TWO of the following are benefits of implementing a wireless network in this scenario? (Choose two.)

Accepted Answer

Mobility for employees who need to move between meeting rooms and desks.. Wireless LANs remove the cost of cabling every desk and give users the freedom to move around while staying connected. Those two advantages match the owner's goals of cutting cabling costs and supporting normal office tasks. The other choices overstate wireless capabilities, such as guaranteed speed, automatic security, or the removal of core network hardware.

Answer

Reduced need for any network switches or access points.

Answer

Guaranteed higher throughput than a wired Gigabit Ethernet connection.

Answer

Elimination of all security risks because wireless signals are encrypted by default.