How can a company prevent employees from accessing high-risk or malicious websites? Learn how DNS filtering blocks unsafe domains and enhances network security—key for the Cisco Certified Support Technician (CCST) Cybersecurity 100-160 exam.
Table of Contents
Question
A company wants to prevent employees from accessing certain high-risk websites. What security measure should they implement?
A. IDS
B. Firewall
C. VPN
D. Endpoint encryption
E. DNS filtering
Answer
E. DNS filtering
Explanation
DNS filtering blocks access to unsafe or malicious websites by restricting domain name resolution.
The most effective security measure to prevent employees from accessing certain high-risk websites is DNS filtering.
DNS filtering works by intercepting DNS queries (the requests that translate website names into IP addresses) and blocking those that match a list of prohibited or high-risk domains.
When an employee tries to visit a blocked website, the DNS filter prevents the browser from resolving the domain, effectively stopping access to the site before any content is loaded.
DNS filtering can block access to categories such as malware, phishing, adult content, social media, or any sites deemed inappropriate or dangerous by company policy.
This approach protects the network from threats such as malware downloads, phishing attacks, and data leaks, and helps ensure compliance with organizational security policies.
DNS filtering is easy to implement at the network level and provides broad protection without requiring software on every endpoint.
DNS filtering blocks access to unsafe or malicious websites by restricting domain name resolution, making it an effective and scalable solution for controlling employee web access and enhancing cybersecurity.
Cisco Certified Support Technician (CCST) Cybersecurity 100-160 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Support Technician (CCST) Cybersecurity 100-160 exam and earn Cisco Certified Support Technician (CCST) Cybersecurity 100-160 certification.