Which of the following is an example of a false negative vulnerability detection in a scan report?
A false negative occurs when a security control or scanning tool fails to detect a vulnerability that actually exists. In vulnerability scanning, this means the scan reports a system as secure even though it is vulnerable. Therefore, a result that shows no known vulnerability is an example of a false negative if a vulnerability is present but undetected.
CompTIA Security+ SY0-701 explains that false negatives are particularly dangerous because they provide a false sense of security, potentially leaving systems exposed to exploitation. Causes of false negatives include outdated vulnerability signatures, misconfigured scanners, credentialed scan failures, or unsupported legacy systems.
Option A describes a false positive, where a vulnerability is reported but does not exist. Option B may indicate an outdated scan result, not necessarily a false negative. Option D is incorrect because zero-day vulnerabilities do not have known remediations and are typically not detected by signature-based scanners.
Thus, the correct example of a false negative is C: A result that shows no known vulnerability.
A network administrator wants to ensure that network traffic is highly secure while in transit. Which of the following actions best describes the actions the network administrator should take?
A security analyst is reviewing logs and discovers the following:

Which of the following should be used lo best mitigate this type of attack?
A newly identified network access vulnerability has been found in the OS of legacy loT devices. Which of the following would best mitigate this vulnerability quickly?
Segmentation is a technique that divides a network into smaller subnetworks or segments, each with its own security policies and controls. Segmentation can help mitigate network access vulnerabilities in legacy loT devices by isolating them from other devices and systems, reducing their attack surface and limiting the potential impact of a breach. Segmentation can also improve network performance and efficiency by reducing congestion and traffic. Patching, insurance, and replacement are other possible strategies to deal with network access vulnerabilities, but they may not be feasible or effective in the short term. Patching may not be available or compatible for legacy loT devices, insurance may not cover the costs or damages of a cyberattack, and replacement may be expensive and time-consuming. Reference: CompTIA Security+ Study Guide: Exam SY0-701, 9th Edition, page 142-143
A network administrator wants to ensure that network traffic is highly secure while in transit. Which of the following actions best describes the actions the network administrator should take?
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