CompTIA Updated SY0-601 Exam Questions and Answers by cordelia

An air gap is a security measure that physically isolates a section of the network from any other network or device that could compromise its security. An air gap prevents any unauthorized access, data leakage, or malware infection through network connections, such as Ethernet cables, wireless signals, or Bluetooth devices. An air gap can be used to protect sensitive or critical systems and data from external threats, such as hackers, spies, or cyberattacks.

This is the best course of action for the help desk technician because it can help prevent a potential social engineering attack. Social engineering is a technique that involves manipulating or deceiving people into revealing sensitive information or performing actions that compromise security. The caller may be impersonating a member of the organization’s cybersecurity incident response team to obtain the network’s internal firewall IP address, which could be used for further attacks. The help desk technician should not provide any information over the phone without verifying the caller’s identity and authorization. The help desk technician should also report the incident to the organization’s cybersecurity officer for investigation and response. References: https://www.comptia.org/blog/social-engineering-explained https://www.certblaster.com/wp-content/uploads/2020/11/CompTIA-Security-SY0-601-Exam-Objectives-1.0.pdf

EDR stands for Endpoint Detection and Response, which is a technology that monitors, detects, and responds to cyber threats on endpoint devices, such as laptops, desktops, servers, or mobile devices. EDR collects and analyzes data from endpoints to identify suspicious or malicious activities, such as malware installation, file modification, registry changes, network connections, or user actions. EDR also provides tools and capabilities to respond to threats, such as isolating infected devices, blocking malicious processes, removing malware, or restoring files.

Historically, a company has had issues with users plugging in personally owned removable media devices into corporate computers. As a result, the threat of malware incidents is almost constant. EDR would best help prevent the malware from being installed on the computers by detecting the insertion of removable media devices and scanning them for any malicious code or files. EDR would also alert the security team of any potential infection and enable them to take immediate action to contain and remediate the threat.

A DNS sinkhole would be most effective to contain a rapidly spreading attack that is affecting a large number of organizations. A DNS sinkhole is a technique that involves redirecting malicious or unwanted domain names to an alternative IP address, such as a black hole, a honeypot, or a warning page. A DNS sinkhole can help to prevent or disrupt the communication between infected systems and command-and-control servers, malware distribution sites, phishing sites, or botnets. A DNS sinkhole can also help to identify and isolate infected systems by monitoring the traffic to the sinkhole IP address. References: https://w ww.comptia.org/blog/what-is-a-dns-sinkhole https://www.certblaster.com/wp-content/uploads/2020/11/CompTIA-Security-SY0-601-Exam-Objecti ves-1.0.pdf