CompTIA A+ Core 2 Certification Exam 220-1202 Practice Test 4

UPnP allows devices on the network to automatically request that the router open ports for them, which is convenient but can also open unintended holes in the firewall. Disabling it requires ports to be configured manually and approved by an administrator instead.

Using plain language and avoiding unnecessary jargon or acronyms ensures the customer actually understands the explanation, which is a core professional communication guideline. Using heavy technical terminology, rushing the conversation, or assuming prior technical knowledge all risk confusing or alienating a non-technical customer.

A UPS provides battery backup to ride through brief power blips without an abrupt reboot, and a surge suppressor protects equipment from voltage spikes that often accompany power fluctuations, directly addressing the described power quality issue. Additional cooling, a dehumidifier, and extra cabling address temperature, humidity, and connectivity concerns, not power interruptions.

Safety goggles protect the eyes from metal shavings or debris when working around sharp edges inside a case. An ESD strap protects components from static discharge rather than protecting the technician physically, an air filter mask is for dust/particulates, and a fire extinguisher addresses a different hazard entirely.

The Grandfather-Father-Son (GFS) scheme organizes backups into monthly (grandfather), weekly (father), and daily (son) tiers, cycling out older backups as newer ones are created at each tier, matching the described rotation.

Each change type serves a distinct purpose: a standard change is pre-approved and routine, a normal change goes through the full review process, an emergency change bypasses normal timelines due to urgent risk, and a change freeze is a restricted period rather than a type of change itself.

Recording severity and escalation changes as they happen, with clear notes, preserves the full history of how an issue evolved for anyone reviewing the ticket later. Only updating the final severity, deleting the original entry, or leaving escalation blank until closure all erase or hide that history.

Files being renamed with unfamiliar extensions and going missing from their normal location is a classic sign of ransomware or another file-encrypting infection processing those files. A Windows Update changing file associations wouldn't rename or hide the files themselves, and printer driver or monitor cable issues are unrelated to file integrity.

Booting into safe mode helps isolate whether a third-party app is generating the fake alerts, and running a reputable anti-malware scan can detect and remove the underlying malicious app causing both the fake warnings and the system-wide slowdown. Autorotate, wallpaper, and clearing browsing history alone don't address an app generating alerts outside the browser or system-wide performance degradation.

An app with broad permissions that the user doesn't recognize, and that doesn't show up normally in the installed apps list, is a strong indicator of an unauthorized or hidden malicious application. A mislabeled system app, a pending update, or a Bluetooth pairing request would not explain a hidden app silently holding contact, camera, and location permissions.

Random reboots that began immediately after a specific app's update strongly suggest that update as the cause, so removing or rolling back that app is the most direct first step. Battery replacement, disabling NFC, and display diagnostics don't address an issue that correlates directly with a software update.

A sudden battery life change coinciding directly with installing a new app points strongly to that app's background activity as the cause, so reviewing its battery usage and permissions is the appropriate first step. A broken brightness sensor, SIM card issue, or jumping straight to a factory reset don't fit a symptom that started right after one specific app install.

A slow profile load affecting only one specific account, while other accounts on the same machine log in quickly, points to an issue with that individual user's profile rather than the hardware or overall system. A failing PSU, loose cable, or GPU driver would typically affect the whole system or specific functions, not one user's login time specifically.

Shutdowns occurring consistently after a period of use, combined with unusual heat, strongly suggest thermal protection shutting the system down to prevent damage, making cooling components the first thing to check. Update history, browser extensions, and account passwords don't explain a heat-related, time-based shutdown pattern.

A browser extension installed from an unverified source is a common vector for malicious behavior, including ad injection and search hijacking, regardless of what the extension claims to do. A pop-up blocker failure wouldn't cause new ads to be injected, and this scenario is specific to the browser rather than router-level DNS or a corrupted cache.

PXE network boot allows a machine with no local install media to boot directly from a deployment server over the network, exactly fitting a machine with no USB/optical drive present. Booting from an internal partition assumes an OS is already there, multiboot manages multiple existing OSs, and an external hot-swappable drive still requires a physical drive to be attached.

Erasing or wiping securely removes data while leaving the drive intact and reusable, matching the requirement to reuse the laptops. Degaussing, shredding, and incineration are all physically or data-destructive methods intended for drives that will not be reused.

Configuration profiles can enforce screen-lock requirements, and patch management policies can push OS updates automatically, directly matching both stated requirements. Locator apps, remote backup, and content filtering are valid mobile security features but don't address lock enforcement or automatic patching.

Each hardening technique targets a specific risk: a BIOS/UEFI password blocks firmware-level tampering like boot order changes, a screensaver lock protects an unattended session, disabling AutoRun stops removable media from auto-executing code, and an account expiration date limits the window a dormant account stays active.

Educating the user on what caused the infection, combined with scheduling regular scans and updates, directly reduces the chance of a repeat infection, which is the final step in the SOHO malware removal process. System Restore should be re-enabled, not disabled, at this stage, reformatting is unnecessary once removal is confirmed successful, and permanently disconnecting the workstation isn't a normal remediation step.

Tailgating is following an authorized person through a secure entry point, often using props like a uniform or a large box to appear legitimate and avoid suspicion. Vishing is a phone-based attack, dumpster diving involves searching discarded materials, and an evil twin is a fake wireless access point.

A cryptominer silently uses a victim's CPU/GPU resources to mine cryptocurrency in the background, causing high resource usage and heat without necessarily triggering visible pop-ups or a ransom demand. Ransomware demands payment via a visible note, a keylogger records keystrokes without heavy CPU use, and adware causes visible ads rather than silent background CPU load.

WEP's encryption algorithm has well-known cryptographic weaknesses that let attackers recover the key and decrypt traffic quickly, which is why WEP is considered obsolete and insecure. WEP doesn't inherently affect bandwidth, doesn't require RADIUS, and has no direct relationship to SSID broadcast settings.

Real-time co-editing of a spreadsheet by multiple users is a core collaboration tool capability within cloud productivity suites. Identity synchronization concerns login credentials, licensing assignment concerns paid seats, and email systems concern messaging rather than document co-editing.

top shows real-time process resource usage including CPU consumption, and df reports free disk space per mounted filesystem, directly matching both stated needs. cat displays file contents, rm deletes files, and mv moves or renames files, none of which show process usage or disk space.

Each macOS feature addresses a distinct task: FileVault handles full-disk encryption, Disk Utility manages disk and volume operations, Force Quit terminates a frozen app, and Keychain securely stores and retrieves saved passwords.

WWAN (wireless wide area network) connections use cellular data as a network connection option, which is what allows automatic failover to cellular when Wi-Fi isn't available. VPN secures traffic over an existing connection rather than providing connectivity itself, wired requires a physical cable, and a proxy setting routes traffic through an intermediary rather than providing connectivity.

Personalization settings, backgrounds, themes, and taskbar behavior, are stored per user profile in Windows, giving each account its own look on shared hardware. Sound only controls audio settings, Ease of Access covers accessibility features, and Indexing Options controls search indexing.

The Services tab in Task Manager lists Windows services along with their current running/stopped status. The Startup tab covers login applications rather than services, Performance shows resource graphs, and Users shows logged-in accounts.

Pro for Workstations specifically raises RAM support limits and adds workstation-class hardware support, like multiple CPUs, beyond standard Pro. Home has the lowest RAM support, standard Pro has a lower RAM ceiling, and the N edition is only a regional variant lacking certain media features, not a higher hardware-support tier.