N10-009 Reviews Questions

An evil twin is a rogue Wi-Fi access point that mimics a legitimate network. Attackers use it to intercept and manipulate traffic, making it an on-path (formerly MITM) attack opportunity.

Breakdown of Options:

A. Phishing – Tries to steal credentials through fake emails/websites but does not intercept network traffic.

B. Dumpster diving – Involves physical security breaches, not network interception.

C. Evil twin – ✅ Correct answer. A rogue Wi-Fi AP impersonates a real network, allowing traffic interception.

D. Tailgating – Involves physical access security, not network interception.

A cold site is a backup facility that provides infrastructure (such as power, cooling, and space) but does not have active IT resources installed. When a disaster occurs, IT teams must bring in and configure all necessary hardware and software before services can resume. This process can take weeks or longer—which matches the scenario described.

•Why not the other options?

•Hot site (A) – A hot site is a fully operational backup facility with up-to-date data and pre-configured hardware, allowing almost instant failover (minutes to hours).

•Warm site (B) – A warm site has pre-installed hardware and some software/configurations, but it requires some setup before becoming fully operational (hours to a few days).

•Active-active approach (D) – This means that multiple sites run simultaneously with load balancing, ensuring no downtime in case of a failure.

802.1X provides port-based Network Access Control (NAC). Ports remain in a blocked state until a device authenticates (usually with RADIUS). This is ideal for public or semi-public areas where ports should not be “always on.”

A. Port security restricts by MAC addresses but does not authenticate users.

C. MAC filtering is easily spoofed and weaker than 802.1X.

D. ACLs filter traffic but do not enforce port-based authentication.

References (CompTIA Network+ N10-009):

Domain: Network Security — NAC, 802.1X authentication, port-based security.

WPA2/WPA3 mixed mode provides compatibility for older devices (that only support WPA2) while allowing newer devices to take advantage of stronger WPA3 encryption. This ensures maximum compatibility and security in a mixed-device environment.

A. WPA3 only is most secure but not compatible with legacy devices.

B. WPA2 only is secure but does not future-proof against WPA3-capable devices.

D. WPA/WPA2 mixed mode is weaker due to WPA (deprecated, insecure).

References (CompTIA Network+ N10-009):

Domain: Network Security — Wi-Fi encryption standards, WPA2 vs WPA3, mixed-mode compatibility.