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

Since the CPU is already confirmed to be on the motherboard's supported list, socket compatibility is established, making a socket mismatch the least likely remaining cause. A BIOS version too old for the CPU, insufficient CPU power delivery, and RAM seating issues all remain plausible even with a confirmed-compatible CPU.

A worn or dirty pickup roller loses the grip needed to separate and feed a single sheet at a time, commonly causing multi-sheet pulls and misfeeds. Toner level, drum damage, and orientation settings don't affect paper feeding mechanics.

Ghosting on a laser printer, a faint duplicate image at a fixed offset, points to a drum or transfer roller carrying over residual toner, while smearing on an inkjet points to wet ink from oversaturation, incorrect media settings, or a printhead needing cleaning. Fusers are a laser printer component, not inkjet.

QoS prioritizes time-sensitive VoIP packets over other traffic, and placing VoIP on its own VLAN reduces congestion from unrelated traffic, both directly reducing jitter. Cable category, DHCP lease time, and SSID broadcast settings don't address traffic prioritization or congestion.

Unprompted touch registration, sometimes called ghost touching, points to a fault in the digitizer or its calibration. Battery health, charging port wear, and camera lens damage wouldn't cause spontaneous touch input.

VGA is an analog signal susceptible to EMI from nearby motors or heavy equipment, distorting the image only when that equipment is active. Burn-in, dead pixels, and input source selection wouldn't correlate with equipment turning on.

The technician should first identify the specific faulted drive to avoid pulling the wrong one, then protect data before making changes, replace the drive, and confirm the rebuild completes. If the array is still online and accessible, the backup should begin as soon as the failed member is identified, since waiting introduces unnecessary risk.

A shutdown occurring immediately at cold boot, before the OS has loaded, points away from a purely thermal cause tied to sustained load and toward a power supply that can't deliver stable output whether cold or warmed up. Overheating alone typically needs sustained operation to build heat.

Cloud computing is defined in part by elasticity, metered utilization, and shared or multitenant resources, all enabling flexible, usage-based consumption. Permanent fixed capacity that can't be resized contradicts the on-demand, scalable nature of cloud computing.

IaaS provides virtualized infrastructure, leaving the customer responsible for the OS and applications. SaaS delivers ready-to-use apps, and PaaS provides a platform without managing infrastructure directly.

Sandboxing isolates risky or unknown content, cross-platform virtualization runs software built for a different OS, test development allows safe experimentation before production rollout, and legacy software support keeps outdated applications running on current hardware.

A cloud print service lets devices send print jobs over the internet without a local driver installation or direct network connection. USB, wired Ethernet, and WPS pairing all require either a direct connection or local network membership.

The 20+4 pin connector supplies primary power to the motherboard. SATA and Molex connectors power drives and peripherals, and the 6-pin PCIe connector supplies supplemental video card power, not the motherboard.

A swollen battery indicates internal cell damage and can leak or ignite if punctured or bent. The technician must power down and handle it carefully, disposing of it per safety guidelines, before any replacement work.

RAID 5 provides fault tolerance through distributed parity across three or more drives, and RAID 10 combines mirroring and striping across four or more drives, both meeting the requirement. RAID 0 offers no redundancy, RAID 1 typically protects only two drives, and RAID 6 requires at least four drives, not two.

Replacement RAM must match both the DDR generation and the physical form factor. DDR5 won't fit a DDR4 slot, DIMM and SODIMM are physically different form factors, and ECC RAM must be supported by the chipset to function correctly.

ST connectors use a twist-and-lock bayonet mechanism, SC connectors use a push-pull design without a twist-lock, LC connectors are a smaller form factor suited to dense installations, and RJ45 is the standard copper Ethernet connector.

HTTPS uses TCP port 443 to carry encrypted web traffic, distinguishing it from unencrypted HTTP on port 80.

AP isolation prevents wireless clients on the same network from seeing or communicating with each other, and port forwarding maps an external port to the camera's internal IP so it can be reached from outside. DHCP scope and lease time don't affect isolation or reachability, and disabling NAT would break internet access network-wide.

A managed switch supports VLAN configuration, letting administrators logically separate department traffic on shared hardware. An unmanaged switch offers no such configuration.

An SPF record, published as a TXT record, lists which mail servers are authorized to send mail for the domain, helping receiving servers verify legitimacy. CNAME is for aliasing, AAAA maps IPv6 addresses, and PTR is used for reverse DNS lookups.

A syslog server centrally collects log messages from multiple network devices for review in one place. DHCP assigns addresses, a proxy relays web traffic, and NTP synchronizes time.

Wi-Fi 6E extends operation into the 6GHz band, which supports wider channels and is free of legacy devices since only Wi-Fi 6E and newer clients can use it. 2.4GHz and 5GHz are shared with older standards, and 60GHz is not part of the Wi-Fi 6E allocation.

Tethering shares the phone's cellular data with a single connected device, typically over USB or Bluetooth, while a hotspot creates a Wi-Fi network multiple devices can join at once. Both rely on the phone's own cellular connection and work with either a physical SIM or eSIM.

A docking station or port replicator lets the user connect one cable to link the laptop to multiple peripherals at once, restoring full desktop connectivity in a single step.