CompTIA A+ Core 1 & 2 (V15) Exam Practice Test 5

The net user command lists all local user accounts on a Windows machine directly from the command line, a fast alternative to opening the graphical Local Users and Groups console.

A surge suppressor protects against sudden voltage spikes like those from lightning, and a UPS provides battery backup to ride through brief total outages. Additional cooling, a dehumidifier, and extra cabling address temperature, humidity, and connectivity concerns, not power quality.

Safety goggles protect the eyes from solder splatter and debris during soldering work. An ESD strap protects components from static discharge, a fire extinguisher addresses a different hazard, and a back support belt relates to lifting, not soldering.

Performing periodic test restores is the only way to confirm that backup data can actually be recovered when needed. Increasing frequency, switching vendors, or encrypting backups don't verify restorability on their own.

A fake warning demanding payment to remove supposed threats is a classic scareware tactic, and files renamed with an unfamiliar extension that won't open normally strongly suggests a ransomware infection. A power supply, printer driver, or Bluetooth issue would not produce either symptom.

A simple flashlight app requesting contacts, location, and using significant data has no legitimate reason for those permissions, making uninstalling it and reviewing the permission grant appropriate. Autorotate, ringtone, and saved Wi-Fi settings are unrelated.

OS updates occasionally reset home screen layouts, so an app still listed as installed but missing from the home screen typically just needs its icon manually re-added. A factory reset, SIM replacement, or battery swap are disproportionate responses to a simple layout reset.

A password expiration policy forces periodic password changes, directly addressing accounts that have never had their password updated. Account lockout threshold addresses failed login attempts, login time restrictions limit when an account can be used, and guest account status addresses a different risk.

Each stage of the SOHO malware removal process serves a distinct purpose: confirming symptoms avoids chasing an unrelated issue, quarantining prevents further spread, remediation removes the actual threat, and educating the user helps prevent a repeat infection.

Vishing is voice-based phishing conducted over a phone call, and using a real internal ticket number to sound credible before requesting a sensitive passcode is a classic vishing tactic. Tailgating and shoulder surfing are physical-proximity techniques, and dumpster diving involves retrieving discarded materials.

A program that primarily floods the screen with unwanted advertisements, without more serious harmful behavior, matches the definition of adware. Ransomware demands payment for file access, a rootkit hides its presence, and a keylogger secretly records keystrokes.

A VPN connection provides an encrypted tunnel that makes a remote device behave as if it's on the office network. A proxy exception, metered connection, and network discovery settings don't establish this kind of secure, full internal network access.

Personalization's color settings include an option to schedule automatic switching between light and dark themes based on time of day. Ease of Access covers accessibility features, Time and Language covers locale settings, and Network and Internet is unrelated to theme scheduling.

NFC enables quick, close-proximity data transfer like sharing a contact card, without requiring pairing or a cable. A docking station and port replicator handle physical peripheral connections, and tethering shares a cellular data connection.

Each printer symptom points to a specific cause: faded prints usually mean low consumables, frequent jams often trace back to worn rollers, garbled text typically indicates a driver problem, and speckling is commonly caused by loose toner or internal debris.

Scattered ping timeouts rather than sustained total loss is characteristic of intermittent connectivity, often caused by an unstable physical link, failing hardware, or interference. A complete outage would show total, continuous loss, and DNS or printer issues wouldn't produce this specific pattern.

A dramatic and sustained drop in battery life compared to previous normal use is a classic symptom of battery degradation. A Wi-Fi antenna, digitizer calibration, and charging port alone wouldn't typically cause this kind of overall rapid battery drain.

Containers share the host OS kernel and provide lightweight, isolated application environments with much less overhead than running full separate guest operating systems. Full virtual machines each require a complete separate guest OS, and VDI delivers full desktop environments rather than lightweight app isolation.

Wireless connectivity directly addresses laptops without an available Ethernet port, and security auditing/audit logs directly address the need to track who printed sensitive documents and when. Duplex printing, tray settings, and the ADF/flatbed scanner are unrelated to either need.

Verifying the PSU's input voltage range or selector setting ensures it can safely accept the region's 220 to 240 VAC standard, a critical compatibility requirement. The connector type, wattage alone, and modularity don't address regional input voltage compatibility.

ITX (specifically mini-ITX) is the smallest common motherboard form factor, designed for compact builds while still supporting modern CPUs. ATX and microATX are larger standard sizes, and E-ATX is an even larger extended format meant for high-end builds.

A cable tester checks a cable's pinout and continuity, identifying wiring faults like shorts or miswires before installation, distinct from a toner probe, which traces a cable's physical path rather than verifying its wiring.

Satellite internet uses a roof-mounted dish communicating with an orbiting satellite, common in rural areas lacking cable, fiber, or reliable cellular infrastructure. DSL requires phone lines, cellular uses mobile towers, and fiber requires dedicated fiber-optic cabling.

NAT translates private internal IP addresses to a single public IP address for outbound internet traffic. VLAN tagging segments traffic logically, DHCP reservations assign consistent addresses internally, and a DMZ isolates specific public-facing servers.

Policy enforcement within MDM allows IT to remotely apply and require settings like a minimum passcode length across managed devices. Synchronization concerns data like contacts and calendar, GPS concerns tracking, and Bluetooth pairing is unrelated to passcode policy.