CompTIA 220-1102 Questions Answers

Operating system updates are used to secure a device from known exploits. Operating system updates are patches or fixes that are released by the vendor to address security vulnerabilities, bugs, or performance issues. Operating system updates can also provide new features or enhancements to the device. It is important to keep the operating system updated to prevent attackers from exploiting known flaws or weaknesses.

A possible cause of the user being redirected to unexpected websites is that the localhost file entries have been modified by malware or hackers to point to malicious or unwanted websites. The localhost file is a text file that maps hostnames to IP addresses and can override DNS settings. By examining the localhost file entries, a technician can identify and remove any suspicious or unauthorized entries that may cause the redirection issue. Enabling firewall ACLs may not resolve the issue if the firewall rules do not block the malicious or unwanted websites. Verifying the routing tables may not resolve the issue if the routing configuration is correct and does not affect the web traffic. Updating the antivirus definitions may help prevent future infections but may not remove the existing malware or changes to the localhost file. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 1.3QUESTION NO: 218a

A network technician installed a SOHO router for a home office user. The user has read reports about home routers being targeted by malicious actors and then used in DDoS attacks. Which of the following can the technician MOST likely do to defend against this threat?

A. Add network content filtering.

B. Disable the SSID broadcast.

C. Configure port forwarding.

D. Change the default credentials.

Answer: D

 One of the most effective ways to defend against malicious actors targeting home routers for DDoS attacks is to change the default credentials of the router. The default credentials are often well-known or easily guessed by attackers, who can then access and compromise the router settings and firmware. By changing the default credentials to strong and unique ones, a technician can prevent unauthorized access and configuration changes to the router. Adding network content filtering may help block some malicious or unwanted websites but may not prevent attackers from exploiting router vulnerabilities or backdoors. Disabling the SSID broadcast may help reduce the visibility of the wireless network but may not prevent attackers from scanning or detecting it. Configuring port forwarding may help direct incoming traffic to specific devices or services but may not prevent attackers from sending malicious packets or requests to the router. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 3.3

A keylogger is a type of malware that records the keystrokes of a user and sends them to a remote attacker1. The attacker can use the captured information to steal passwords, credit card numbers, or other sensitive data. A keylogger can be installed on a computer by attaching a small USB drive that contains a malicious executable file, such as grabber.exe2. The output.txt file may contain the recorded keystrokes. The user should remove the USB drive and scan the computer for malware.

References: 2: What is grabber.exe? (https://www.freefixer.com/library/file/grabber.e xe-55857/) 1: What is a keylogger? (https://www.kaspersky.com/resource-center/definitions/keylogger)

Finder is the default GUI and file manager in macOS. Finder is an application that allows users to access and manage files and folders on their Mac computers. Finder also provides features such as Quick Look, Spotlight, AirDrop and iCloud Drive. Finder uses a graphical user interface that consists of icons, menus, toolbars and windows to display and interact with files and folders. Disk Utility is a utility that allows users to view and manage disk drives and partitions on their Mac computers. Disk Utility is not a GUI or a file manager but a disk management tool. Dock is a feature that allows users to access and launch applications on their Mac computers. Dock is not a GUI or a file manager but an application launcher. FileVault is a feature that allows users to encrypt and protect their data on their Mac computers. FileVault is not a GUI or a file manager but an encryption tool. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 1.1