CompTIA A+ Core 1 Certification Exam 220-1201 Practice Test 2

Adding a second GPU requires both a suitable second PCIe slot with adequate lane support and a power supply with enough wattage and the correct connectors for the additional card. RAM channel mode, CPU hyperthreading, and case RGB compatibility don't determine whether a second GPU can physically be installed and function.

Completely blank pages from a laser printer that otherwise processes jobs normally often points to an empty toner cartridge, or a new cartridge still having its sealing tape or protective cover in place, blocking toner from reaching the drum. A frozen queue or unplugged cable would prevent the job from printing at all rather than printing blank pages.

Since general web browsing and one internal application still work, DNS and general connectivity are functioning, narrowing the cause to the firewall rule likely blocking the specific port the affected application depends on. DHCP exhaustion or simultaneous cable failures would affect connectivity more broadly, not just one application's specific port.

Being able to reach resources by IP address but not by name is a classic sign of a DNS resolution problem, since DNS is responsible for translating names into IP addresses. Monitor cables, RAID, and print spooler settings are unrelated to name resolution.

Rapidly fluctuating cellular signal leading to dropped calls, while Wi-Fi remains stable, points to a cellular antenna or connection issue, or genuinely weak carrier coverage in the area. Calendar app updates, Bluetooth being enabled, and screen brightness have no effect on cellular signal reception.

Many laptops require a function-key combination to toggle or cycle the display output mode between internal-only, external-only, duplicate, and extend, and this is often overlooked when an external monitor shows no signal despite working cabling. Wi-Fi, battery, and DNS settings have no bearing on video output.

A previously working drive suddenly requesting a format often indicates file system corruption rather than a truly blank or unusable drive, so the technician should attempt recovery or diagnostic steps before formatting, since formatting would permanently erase the existing data.

Shutdowns unrelated to system load, occurring both at idle and under heavy use, point away from load-dependent causes like overheating and toward a power supply with inconsistent output regardless of demand. Overheating typically requires sustained load to manifest, and a GPU driver crash usually causes a driver reset or black screen rather than a full power-off.

A memory diagnostic confirming failures on a specific module points directly to that RAM stick needing replacement. Reformatting the drive, updating network drivers, or replacing the PSU wouldn't address a confirmed memory hardware fault.

SaaS delivers ready-to-use applications like web-based email over the internet, PaaS provides a managed runtime and database for developers to build on, IaaS provides virtualized infrastructure that the customer configures and patches, and DaaS delivers a fully managed desktop experience streamed from the cloud.

Under IaaS, the customer is responsible for the guest OS and anything built on top of it, including patching and application-level security, while the provider maintains the physical infrastructure, power, and facility security. The physical hardware, power, and cabling duties remain with the provider.

Server consolidation uses virtualization to run multiple existing server workloads as VMs on fewer physical hosts, preserving each server's OS and configuration while reducing hardware footprint. Application streaming and VDI address different delivery models, and containerization typically requires re-architecting applications.

Uneven or worn sections of the drum can cause inconsistent toner transfer, producing repeating horizontal banding across printed pages. Network cable, driver, and paper size issues would not produce this specific banding artifact tied to the drum's physical wear.

Many modern multifunction printers support USB, wired network (Ethernet), and cloud print services natively, allowing all three connection types depending on the user's location and needs. The other options each support only a subset of the required connectivity.

The EPS12V connector (4-pin or 8-pin) delivers dedicated power to the CPU; without it, the system typically fails to boot correctly even if the 24-pin main connector is seated. SATA and Molex connectors power drives and peripherals, not the CPU directly.

Flickering tied to lid angle points to a damaged or loose video cable running through the hinge, since movement disrupts the connection. Power supply, CPU heat, and driver issues would not correlate with a specific lid angle.

NVMe drives use the faster PCIe bus, and SATA SSDs are capped by the SATA interface's bandwidth ceiling regardless of the drive's own capability, both making NVMe generally faster in practice. NVMe is not always slower, SATA drives use a SATA connector rather than a PCIe slot, and M.2 slots can support either SATA or NVMe drives depending on their keying.

The number following the DDR generation refers to the module's data transfer rate, measured in millions of transfers per second (MT/s), which is a key factor in memory bandwidth and compatibility with the motherboard's supported speeds.

BNC connectors are used with coaxial cable for analog video connections such as security camera feeds. RJ45 is for Ethernet, RJ11 is for telephone lines, and LC is a fiber connector.

OLED panels produce true blacks by turning individual pixels off entirely, giving very high contrast, but this same per-pixel control makes them more prone to burn-in with static images over time. TN, IPS, and VA panels use a backlight and don't offer true per-pixel blacks.

A loopback plug redirects a port's transmit signal back into its receive pins, letting a technician test the port's send/receive function in isolation. A toner probe traces cable runs, a punchdown tool terminates wires onto a patch panel, and a Wi-Fi analyzer surveys wireless spectrum.

Single-mode fiber uses a laser light source and a narrower core, supporting much longer distances than multimode fiber, which uses LED light sources and is suited to shorter runs. Coaxial and copper cabling can't achieve comparable distances.

An additional switch connected via uplink expands the number of available wired ports, and a wireless access point wired into the network extends coverage to the far corner. A cable modem, patch panel, and KVM switch don't address port expansion or wireless coverage.

NAT translates private internal addresses to a single shared public address for internet-bound traffic, letting many internal devices share one public IP. DNS resolves names, DHCP assigns addresses, and VLAN tagging segments traffic.

DHCP servers automatically assign IP addresses to new devices joining the network; if new devices can't get addresses while existing ones keep theirs from prior leases, the DHCP service has likely failed or become unreachable.

Narrower channel width and selecting a less-congested channel both reduce the chance of interfering with neighboring wireless networks in a crowded RF environment. Switching entirely to 2.4GHz doesn't guarantee less congestion, maximizing transmit power can increase interference, and disabling encryption is unrelated and reduces security.

SSH uses port 22 for encrypted remote access, DNS uses port 53 for name resolution, SMTP uses port 25 for outgoing mail, and RDP uses port 3389 for remote desktop sessions.

Airplane mode disables cellular radios while allowing Wi-Fi to be re-enabled separately, letting the user access messaging apps over the aircraft Wi-Fi while complying with the no-cellular policy.

eSIM is a built-in, reprogrammable SIM that lets users switch or add carrier profiles without swapping a physical card. A physical SIM requires a card swap, and NFC/Bluetooth don't manage cellular carrier profiles.

A USB-C to Ethernet adapter provides a wired network connection on a laptop lacking a built-in Ethernet port, letting the laptop connect to a wired network without relying on Wi-Fi.