CompTIA A+ Core 1 Certification Exam 220-1201 Practice Test 4

The CPU must physically match the motherboard's socket type, and the motherboard's chipset and BIOS version must support that specific CPU generation, sometimes requiring a BIOS update. Case color, monitor refresh rate, and keyboard connection type have no bearing on CPU compatibility.

A paper size mismatch error typically means the tray's physical guides or the printer's configured paper size setting for that tray don't match the actual paper loaded, rather than indicating a jam, toner, network, or spooler issue.

A problem occurring consistently within the same daily time window points to a scheduled process, such as a backup job, consuming bandwidth during that window, rather than a hardware failure or DNS issue, which would typically be constant rather than tied to a specific time.

Restarting the device clears accumulated background processes and temporary memory that can slow performance after an update, and checking for a follow-up patch addresses known performance regressions some updates introduce.

Symptoms appearing only during fast motion, with static content displaying normally, are characteristic of screen tearing, caused by a mismatch between content frame rate and display refresh rate rather than physical damage.

A stuck pixel is fixed in an on state showing a color regardless of content, a dead pixel never lights up at all, burn-in leaves a faint ghost image from prolonged static content, and screen tearing shows misaligned segments during fast motion due to a refresh rate mismatch.

A growing count of reallocated sectors in S.M.A.R.T. data is a well-known early warning sign of a mechanically degrading drive, so the appropriate response is proactive backup and planned replacement before outright failure.

A degraded RAID 1 array means one of the two mirrored drives has failed, and the system is now running on the single remaining drive with no redundancy until the failed drive is replaced and the mirror rebuilt.

Many laptops include a battery charge-limiting feature that intentionally caps charging around 80 percent to extend battery lifespan, and some aging batteries also begin reporting inaccurate capacity readings; both would produce this exact symptom.

Vendor lock-in describes the difficulty and cost of switching providers after building deeply around one provider's proprietary services and APIs, an important consideration when evaluating cloud architecture decisions.

RAM oversubscription (or overcommitment) allows the hypervisor to allocate more virtual RAM to VMs than physically exists, relying on VMs rarely using their full allocation simultaneously, with the hypervisor dynamically managing actual physical memory usage.

Live migration allows a running VM to be moved from one physical host to another with no perceptible downtime, ideal for scheduled maintenance on the original host. Cold migration requires powering the VM off first.

A consistent unprinted stripe at the same horizontal position on every page points to a clogged nozzle or dried ink blocking that specific column of the print head, common on inkjet printers, often resolved with a cleaning cycle.

Secured or pull printing requires authentication, such as badging in, before a job releases, and combined with print quota tracking, allows institutions to both control access and limit usage per user.

A redundant power supply configuration uses two or more PSUs, ideally on separate circuits, so the server continues running if one PSU or circuit fails. A single PSU, even a high-wattage or highly efficient one, still represents a single point of failure.

Distorted sound correlating with a visible dent directly over the speaker location points to physical damage to the speaker component itself rather than a software-level cause. A driver, output device, or mixer issue wouldn't correlate with physical case damage at that exact location.

A hybrid drive combines a small flash cache with a larger mechanical drive, improving everyday responsiveness for frequently accessed files at a lower cost than a full SSD of comparable capacity.

Dual-channel operation typically depends on installing matched modules into specific slot pairs defined by the motherboard, often alternating slots rather than adjacent ones, so installing them in the wrong slots often results in single-channel operation.

USB-C is a connector shape used by multiple standards, and not every USB-C port supports Thunderbolt's higher bandwidth, so the specific port's specification or documentation must be checked rather than assuming based on connector shape alone.

An ultrawide monitor with high horizontal resolution provides significantly more horizontal screen space, allowing multiple full-size windows side by side without a multi-monitor setup. Refresh rate and response time relate to motion clarity, not available screen real estate.

The netstat command is a built-in Windows utility that displays active network connections and listening ports on the local machine. A Wi-Fi analyzer surveys wireless spectrum, and a toner probe and crimper are physical cabling tools.

A cellular failover connection uses existing wireless carrier signal and requires no new physical cabling, and a dual-WAN router can automatically switch to it if the primary fiber connection fails. The other options all require new physical infrastructure.

netstat is a built-in Windows utility showing active connections and listening ports, a Wi-Fi analyzer surveys wireless spectrum conditions, a toner probe traces unlabeled cable runs with an audible tone, and a crimper attaches connectors to cable ends.

A hub repeats incoming traffic out to every connected port, so all connected devices share a single collision domain, while a switch intelligently forwards traffic only to the relevant port, giving each connection its own collision domain.

A DHCP relay, often called an IP helper, forwards DHCP broadcast requests from client VLANs to a centralized DHCP server on a different subnet. DNS, proxy, and syslog servers don't relay DHCP requests.

Bluetooth Low Energy is specifically designed for periodic, small data transfers while minimizing power consumption, ideal for battery-powered wearables. Classic Bluetooth audio and Wi-Fi consume significantly more power, and NFC isn't suited to continuous background syncing.

Ports 0 to 1023 are well-known ports reserved for standard, widely used services such as HTTP, HTTPS, and SSH, and should be avoided for custom applications. Registered and dynamic/private port ranges are intended for exactly this kind of application-specific use.

Manual email setup requires the incoming server (commonly IMAP) and outgoing server (SMTP) addresses and ports to properly send and receive mail. IMEI, screen resolution, and Bluetooth MAC address are unrelated to configuring email connectivity.

Many keyboard/mouse combos use a proprietary RF dongle that connects both devices through one USB receiver, avoiding the need to pair each device separately via Bluetooth.

A grinding or rattling noise, distinct from the whirring sound of dust-related airflow issues, points to worn or failing bearings within the fan motor itself, typically requiring replacement rather than cleaning.