CompTIA Updated 220-1102 Exam Questions and Answers by ian

To ensure data is unrecoverable on a lost or stolen mobile device, the best solution is:

Remote wipe: This feature allows the device owner or IT administrator to remotely erase all data on the device, ensuring that it cannot be recovered by unauthorized users.

Device encryption: While important for protecting data, encryption alone does not remove data from the device.

Data backup: Ensures data is saved elsewhere but does not make it unrecoverable on the lost or stolen device.

Fingerprint reader: Provides security for accessing the device but does not affect data recovery if the device is compromised.

Random restarting of an Android phone and the presence of applications not from the standard marketplace strongly suggest the possibility of malware.

Option A: The OS update failedWhile an OS update failure can cause issues, it is less likely to result in random restarts compared to malware.

Option B: The user downloaded malwareMalware is a common cause of erratic behavior, including random restarts, especially when applications are installed from unofficial sources.

Option C: The device is in developer modeDeveloper mode alone does not typically cause random restarts. It may make the device more susceptible to issues if improper apps are installed.

Option D: The over-the-air carrier update failedSimilar to the OS update, this would more likely cause consistent issues rather than random restarts.

Disabling guest accounts on domain-joined machines is done through Group Policy. Group Policy allows centralized management and configuration of operating systems, applications, and users' settings in an Active Directory environment. By using the Group Policy Editor (gpedit.msc), administrators can enforce policies such as disabling the guest account across all machines within the domain. The other options (Firewall, Microsoft Management Console, MSConfig) do not provide functionality specific to managing user accounts in this context.

Comprehensive and Detailed In-Depth Explanation:

The sudo (SuperUser DO) command is used in Linux-based systems to execute administrative tasks, such as changing permissions or accessing root-level files and directories. When a technician needs to change file or user permissions, they often use chmod or chown with sudo to gain the required privileges.

Option B (chxod): This is a typo. The correct command is chmod, used to change file permissions.

Option C (xv): Not a valid command in Linux related to permissions.

Option D (pwd): Stands for “print working directory,” used to display the current directory, not manage permissions.

? Reference:

CompTIA A+ 220-1102 Exam Objective 1.4 – "Given a scenario, use features and tools of the Mac OS and Linux client/desktop operating systems."

Linux Command Reference: sudo, chmod, chown