CompTIA A+ 220-1202 - Mobile Security, Troubleshooting, & Operations - 9th Set of Videos

Sideloading

Installing apps from outside the official app store, bypassing security vetting.

How to enable Developer Options on Android

Go to Settings, About Phone, and tap Build Number 7 times.

Rooting and Jailbreaking

Modifying device firmware to grant full administrative root access.

XcodeGhost

Malware injected into compiled iOS apps via an infected development tool.

First step to resolve mobile performance issues

Close background apps not currently in use to free up memory.

Earliest indicator of a mobile malware infection

An unusual spike in data usage by a specific app.

Why malware blocks network access on Windows

To prevent downloading antivirus tools or OS security updates.

Correct response to fake security alerts

Ignore and close the notification immediately without clicking any buttons.

Unambiguous malware indicators on a file system

System files renamed, missing, or sudden permission changes.

Cause of CPU spike to 100% on a specific webpage

An in-browser cryptominer running active JavaScript exploit.

Universal escalation path for confirmed malware

Run a malware cleaner, or wipe and restore from backup.

Triage

The process of determining ticket priority relative to other issues.

Purpose of resolution notes in a ticket

To document exact steps and root causes for future troubleshooting.

Linked tickets

Connecting related tickets to identify trends and systemic infrastructure issues.

Configuration Management Database (CMDB)

A centralized database used to track all hardware and software assets.

Asset Tag

A physical label linking a device to its record in the database.

Incident Report

A formal document detailing the timeline, impact, and response to an IT incident.

Standard Operating Procedure (SOP)

A documented set of processes ensuring consistency in handling specific situations.

Acceptable Use Policy (AUP)

An agreement defining permitted and prohibited actions on company systems.

Service Level Agreement (SLA)

A contract specifying minimum acceptable service levels and downtime penalties.

Knowledge Base

A searchable archive of technical documentation for shared organizational expertise.

Change Freeze

A predefined period when no non-emergency system changes are permitted.

Standard Change

A low-risk, routine, pre-approved change bypassing formal CMB review.

Rollback Plan

A documented process for returning to the original configuration if a change fails.

Sandbox

An isolated environment used to test system changes safely.

Full Backup

Backs up all data; high backup time, low restore time.

Differential Backup

Backs up all changes made since the last full backup.

Incremental Backup

Backs up only changes made since the last backup.

Synthetic Backup

Assembles existing full and incremental backups into a new full backup.

3-2-1 Backup Rule

Three copies of data, two media types, one off-site location.

Grandfather-Father-Son (GFS)

A backup rotation strategy layering monthly, weekly, and daily backups.