CompTIA A+ Certification Exam: Core 2 V13.55

CompTIA A+ Certification: Exam Core 2

Security

• WPA3 is the latest version of Wi-Fi security and offers the highest level of protection available.
• WPA3 protects against brute force password attempts and eavesdropping and man-in-the-middle attacks.
• WPA3 supports the use of stronger encryption algorithms, such as the Advanced Encryption Standard (AES).

Wireless Network

• To ensure the best possible security for a new wireless router, implement WPA3.
• A third-party GPS application can use up a data plan on a corporate phone, leading to slow performance and data limit issues.

Malware and Viruses

• If a user's computer has a virus, and the antivirus software is out of date, download the latest virus definitions to ensure the antivirus software is up-to-date.
• Rebooting a system in safe mode can help remove malware while preserving user files.
• Cryptominer is a type of malware that can cause a PC to run slowly and increase GPU temperature.

System Administration

• To configure a Windows device to require a password when resuming from a period of sleep or inactivity, use the Screensaver settings.
• To exclude an application folder from being cataloged by a Windows 10 search, use the Indexing Options utility.
• To transfer sensitive personal information between offices, use a USB drive with encryption, such as BitLocker To Go.

Network and Internet

• A user's smartphone data usage is likely above average if an installed application is transmitting data in the background.
• To control security settings on an Android phone in a domain environment, use a Mobile Device Management (MDM) solution.
• A user may not be able to use internet-related functions on a smartphone when it is not connected to Wi-Fi if the smartphone's line was not provisioned with a data plan.

Operating Systems

• To provide a lightweight option for workstations that need an easy-to-use browser-based interface, use Chrome OS.
• To reset a user's password, create a new password and require the user to change it at the next log-in.
• To remove information from past users' hard drives in order to reuse the hard drives, use disk-wiping software.

Troubleshooting

• To troubleshoot a computer issue, use the Resource Monitor tool to identify the issue.
• If a user reports a computer is running slow, use the Resource Monitor tool to help identify the issue.
• If a user is unable to use any internet-related functions on a smartphone when it is not connected to Wi-Fi, the most likely reason is that the smartphone's line was not provisioned with a data plan.

Shell Scripting

• In Linux, the default file type supported by default is .sh.

Hardware and Peripherals

• To connect an additional monitor to a PC, use a USB port.
• To allow a mouse to correctly move to a new monitor, swap the cables for the monitors.

Certificates and Encryption

• To realize multifactor authentication benefits for Wi-Fi access, deploy a client certificate to be used in conjunction with the user's existing username and password.

Group Policy

• If a Group Policy setting is applied to all workstations in the network, and users are unable to log in, the most likely cause is a difference in system clocks between the workstations and the authentication server.

macOS

• To resize a partition on the internal storage drive of a computer running macOS, use the Disk Utility tool.

Laptop and Docking Station

• To prevent a laptop from going to sleep when it is closed and on a docking station, select the option "Do Nothing" when I close the lid under the Plugged in category.### IT Certification Guaranteed, The Easy Way!

Changing Desktop Wallpaper

• To change the wallpaper on a Windows 10 computer using the Windows 10 Settings tool, go to Settings > Personalization > Background.

Disposing of Non-Compliant Ethernet Cards

• The most environmentally friendly method of disposing of non-compliant Ethernet cards is to use a dumpster for recycling plastics.

Default Apps

• To ensure that PDF files open in Adobe Reader, use the Default Apps utility in Windows 10.

Hiding Files

• To hide a file, use the File Explorer application.

Securing Workstations

• The best way to secure a workstation quickly is to use a key combination to lock the computer.
• When a user reports potential malware, the first step is to disconnect the affected system from the network.

Text Size

• To increase the size of text, applications, and other items on a Windows 10 computer, go to Settings > System > Display and change the Scale and layout setting to a higher percentage.

Malware Removal

• After using an anti-malware removal tool, educate the user on how to access recovery mode.

Cryptocurrency Mining

• If an employee is mining cryptocurrency on a work desktop, the Acceptable Use Policy (AUP) should be updated to reflect this new requirement.

Change Process

• The most likely next step in the change process after a change request is approved is sandbox testing.

Proxy Issues

• If a proxy is blocking traffic to a software update site, the technician should perform a full system scan using the OS anti-malware application.

Backup Methods

• A full backup involves creating a copy of all data on a workstation and storing it on a set of tapes.
• A full backup is the best way to ensure that all data is backed up and can be restored in the event of a system failure or data loss.

Physical Access

• A badge reader can be used to implement secure physical access to a data center.

End-of-Life Operating Systems

• End-of-life operating systems are no longer supported by the software developer and will no longer receive updates or security patches.

Security Risks

• BitLocker is a disk encryption tool that can be used to encrypt the hard drive of a Windows laptop and protect data in the event of loss or theft.

Force Quitting Programs

• On a macOS computer, the Apple icon menu can be used to force quit a program.

Remote Access

• The most cost-effective version of Windows 10 that allows remote access through Remote Desktop is Windows 10 Pro.

Migration

• An in-place upgrade is the most efficient method for migrating from Windows 7 Pro to Windows 10 Pro, as it retains all user files and preferences.

Website Trust Issues

• If multiple users are experiencing issues with a website, it is likely that the issue is related to the network or internet connection.

Forensic Evidence

• Chain of custody must be maintained throughout the forensic evidence life cycle.

Linux Commands

• The sudo command is used to install an application in Linux.

Hash Verification

• A hash is used to verify the integrity of a downloaded file.

OS Updates

• If a device is unable to complete a tethered OS update, the technician should check if the device has adequate storage available.

Wireless Network Interference

• Changing channels can resolve interference on a wireless network.

Malware Infection

• If a user's files have been changed and now have a .lok file extension, the first step is to disconnect the machine from the network.

Antivirus Protection

• If a user receives a notification that the antivirus protection on a company laptop is out of date, the technician should check the antivirus engine and definitions.

Backup Methods

• A full backup is the best way to ensure that all data is backed up and can be restored in the event of a system failure or data loss.

EULA

• A EULA (End User License Agreement) is a legally binding agreement between the user and the software developer that outlines the terms and conditions of using the software.

Chain of Custody

• Chain of custody is the process of documenting who had possession of evidence at every step of the process.

Task Manager

• The Services tab in Task Manager contains information about which service is causing the issue.

macOS File Extensions

• .pkg, .dmg, and .app are commonly used file extensions for installing applications on a macOS machine.

RAM Issues

• If a Windows 10 OS has only 4GB of RAM available for use, it is likely that the OS is x86.

Backup Methods

• A full backup should be completed first when installing a new backup and recovery system.

Security Threats

• Account lockout policies can help mitigate the threat of dictionary attacks.

Physical Access

• Biometric locks and badge readers can be used to secure physical access to a data center server room.### Server Room Security
• Video surveillance and access control vestibules can be used to further secure the server room.
• A locking rack can be used to physically secure the servers, so that they cannot be accessed without the appropriate key.

PXE Boot Option

• The PXE (Preboot Execution Environment) boot option must be enabled in the computer's BIOS settings to boot up over the network.
• PXE allows computers to boot up over the network, instead of from a local disk.

Filesystems

• NTFS (New Technology File System) is a Microsoft proprietary file system that is supported by both Windows and Linux operating systems.
• NTFS is capable of storing large amounts of data, up to 16TB, and also offers built-in security features such as encryption.

Network Security

• Changing the network channel can help to minimize unauthorized access to a network.
• A support portal can help to manage the volume of requests and allow customers to access customer service tools, submit requests, and view status updates.

Backup Methods

• A full backup involves creating a copy of all data on a workstation, including system files and user-created data, and storing it on a set of tapes.
• A full backup ensures that all data is backed up and can be restored in the event of a system failure or data loss.

Malware

• Ransomware is malicious software that encrypts files on a computer, making them inaccessible until a ransom is paid.
• A user should clear the browser cache and contact the bank if they receive an error message stating that the website's security certificate was issued by a different website.

Proxy Server Configuration

• The Internet Options utility in the Control Panel is used to configure the proxy settings for a network connection.
• The Internet Options utility allows you to configure the proxy server address and port number.

Log-in Options

• A PIN is the fastest and most secure method of logging in to laptops.
• A PIN is a more secure option than a username and password, as it is more difficult to crack or guess.

Wireless Network Configuration

• To configure a wireless network, you need to select the correct SSID, frequency, and security mode.
• The WPA2 with AES encryption method is the most secure option for wireless networks.

Data Theft Prevention

• Locking workstations after a period of inactivity can help to prevent data theft.
• Encrypting workstation hard drives and logging off users when their workstations are not in use can also help to prevent data theft.

Virus Detection

• Manually checking each machine is the most effective way to check for unknown threats.
• Providing a sample to the antivirus vendor can help to detect and remove unknown threats.

Web Server Exploits

• A zero-day attack is a type of attack that occurs when a vulnerability is exploited before a patch is available.
• A zero-day attack is a type of attack that is most likely to occur on a web server.

Antivirus Software

• Running a startup script that removes files by name is not an effective way to check for unknown threats.
• Manually checking each machine and providing a sample to the antivirus vendor are more effective ways to check for unknown threats.

Laptop Refresh

• A clean install is the most effective way to refresh a laptop.
• A clean install involves reinstalling the operating system and all applications, and is the most effective way to remove all viruses and malware.

Network Addressing

• A static IP address is required to connect to specialized software.
• Removing the static IP configuration from the desktop is the most likely solution to resolve the issue.

Remote Desktop

• Apple Remote Desktop is a remote access solution that allows a user to access and control another macOS computer from their Windows workstation.
• Apple Remote Desktop provides a graphical user interface and supports file transfers, encryption, and more.

User Profile Issues

• Rebuilding the user's profile is the most likely solution to resolve the issue.
• Rebuilding the user's profile involves creating a new profile and transferring the user's data and settings.

Linux Server Troubleshooting

• SSH (Secure Shell) is a method that can be used to troubleshoot a Linux server effectively.
• SSH allows a user to access and control a remote Linux server from their Windows workstation.

Data Center Environmental Concerns

• Humidity levels are the most important environmental concern inside a data center.
• High levels of humidity can cause condensation, corrosion, and equipment failure, while low levels of humidity can cause static electricity to build up and lead to damage.

Laptop Security

• Hard drive encryption is the best security practice for laptops used by employees who travel.
• Hard drive encryption ensures that data is protected and cannot be accessed even if the laptop is stolen or lost.