Cisco Certified Support Technician (CCST) CybersecuritySecurity PrinciplesEasy
A small business is setting up its first network and wants to ensure that only authorized devices can connect to its Wi-Fi. Which security concept is primarily being addressed by implementing a strong pre-shared key (PSK) and MAC address filtering?
- ANon-repudiation
- BAccess Control
- CAvailability
- DConfidentiality
Show answer & explanationAnswer & explanation
Correct answer: B. Access Control
Access control is the security concept that governs who or what can access a resource. Implementing a strong PSK and MAC address filtering directly controls which devices are allowed onto the network, thus enforcing access control.
Why the other options are wrong
- A. Non-repudiation ensures that an action cannot be denied, which is unrelated to network access filtering.
- C. Availability ensures that systems and data are accessible when needed, which is not the primary focus here.
- D. Confidentiality protects data from unauthorized disclosure, which is a secondary effect, not the primary goal of filtering access.
Access Control
Access control is a security technique that regulates who or what can view or use resources in a computing environment. It is a fundamental component of security that dictates who is allowed to access what data and resources.
- Restricts access to authorized users/devices.
- Can be physical or logical.
- Often implemented using authentication and authorization.
Memory trick: Access control is like a bouncer at a club, letting only the right people in.