Get All Network Defense Essentials Exam Questions with Validated Answers
| Vendor: | Eccouncil |
|---|---|
| Exam Code: | 112-51 |
| Exam Name: | Network Defense Essentials Exam |
| Exam Questions: | 75 |
| Last Updated: | November 16, 2025 |
| Related Certifications: | Network Defense Essentials |
| Exam Tags: |
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An loT sensor in an organization generated an emergency alarm indicating a security breach. The servers hosted in an loT layer accepted, stored, and processed the sensor data received from loT gateways and created dashboards for monitoring, analyzing, and implementing proactive decisions to tackle the issue.
Which of the following layers in the loT architecture performed the above activities after receiving an alert from the loT sensor?
Which of the following protocols uses TLS/SSL to ensure secure transmission of data over the Internet?
HTTPS (Hypertext Transfer Protocol Secure) is a protocol that uses TLS/SSL to ensure secure transmission of data over the Internet. HTTPS is an extension of HTTP, which is the standard protocol for transferring data between web servers and browsers. HTTPS encrypts the data exchanged between the client and the server, preventing anyone from intercepting, modifying, or stealing the data. HTTPS also verifies the identity of the server using digital certificates, preventing spoofing or phishing attacks. HTTPS is widely used for web applications that handle sensitive information, such as online banking, e-commerce, or social media. Reference:
HTTPS - Week 7: Email Security
How does SSL work? | SSL certificates and TLS | Cloudflare
SSL and TLS: A Beginners Guide | SANS Institute
Mary was surfing the Internet, and she wanted to hide her details and the content she was surfing over the web. She employed a proxy tool that makes his online activity untraceable.
Identify the type of proxy employed by John in the above scenario.
anonymous proxy is a type of proxy that hides the user's IP address and other identifying information from the web servers they access. An anonymous proxy acts as an intermediary between the user and the internet, and it modifies the HTTP headers to prevent the web servers from tracking the user's location, browser, or device. An anonymous proxy can help the user bypass geo-restrictions, censorship, and online surveillance. However, an anonymous proxy does not encrypt the user's traffic, and it may still leak some information to the proxy provider or other third parties. An anonymous proxy is the type of proxy employed by Mary in the above scenario, as she used a proxy tool that makes her online activity untraceable. Reference:
What is a Proxy Server and How Does it Work?
13 Best Proxy Tools for PC [2024 Reviewed] - Section: Anonymous proxies
Jessica, a user, wanted to access the Internet from her laptop and therefore sends a connection request to the access point. To identify the wireless client, the access point forwarded that request to a RADIUS server.
The RADIUS server transmitted authentication keys to both the access point and Jessica's laptop. This key helps the access point identify a particular wireless client.
Identify the authentication method demonstrated in the above scenario.
A major fire broke out in the storeroom of CyberSol Inc. It first gutted the equipment in the storeroom and then started spreading to other areas in the company. The officials of the company informed the fire department. The fire rescue team reached the premises and used a distribution piping system to suppress the fire, thereby preventing any human or asset loss.
Identify the type of fire-fighting system used by the rescue team in the above scenario.
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