Network Access Control (NAC): Master Network Security

Question 1

Which NAC enforcement method uses a client software agent to ensure compliance with security policies?

Accepted Answer

802.1X

Answer

RADIUS

Answer

TACACS

Answer

MAC

Question 2

Which of the following is a potential drawback of implementing a NAC solution?

Accepted Answer

Complex configuration and maintenance

Answer

Improved security posture

Answer

Reduced malware infections

Answer

Increased user productivity

Question 3

What type of NAC policy would allow access to a specific network segment based on the user's group membership?

Accepted Answer

Authorization

Answer

Authentication

Answer

Segmentation

Answer

Quarantine

Question 4

What is the primary purpose of quarantine in a NAC solution?

Accepted Answer

To isolate infected devices from the network

Answer

To grant access to authorized users

Answer

To monitor network traffic

Answer

To prevent unauthorized access attempts

Question 5

What is the primary function of a RADIUS server in a NAC infrastructure?

Accepted Answer

To authenticate users and enforce access policies

Answer

To enforce NAC policies and quarantine infected devices

Answer

To monitor network traffic and provide remote access

Answer

To provide VPN access and establish secure connections

Question 6

What is a key advantage of implementing a Network Access Control (NAC) solution?

Accepted Answer

Centralized management of network access

Answer

Automated security patch management

Answer

Enhanced intrusion detection

Answer

Improved network performance

Question 7

How does Network Access Control (NAC) contribute to mitigating risks associated with the Zero-Trust security model?

Accepted Answer

By continuously monitoring and assessing the trust level of devices and users accessing the network.

Answer

By implementing granular access controls based on user roles and device attributes.

Answer

By encrypting all network traffic to prevent unauthorized access to sensitive data.

Answer

By providing real-time threat detection and prevention capabilities.

Question 8

What is the primary objective of Network Access Control (NAC)?

Accepted Answer

Restricting network access based on user identity and device characteristics

Answer

Protecting networks solely from external threats

Answer

Monitoring and managing network devices remotely

Answer

Providing secure remote access to corporate resources

Question 9

Which technology is commonly employed for 802.1X authentication in NAC implementations?

Accepted Answer

RADIUS

Answer

TACACS+

Answer

NTP

Answer

LDAP

Question 10

Which NAC device type is responsible for enforcing access policies?

Accepted Answer

NAC Appliance

Answer

NAC Server

Answer

Network Switch

Answer

Network Scanner

Question 11

What is the key distinction between proactive and reactive NAC?

Accepted Answer

Proactive NAC prevents unauthorized devices from accessing the network, while reactive NAC responds to unauthorized access after it occurs.

Answer

Reactive NAC prevents unauthorized devices from accessing the network, while proactive NAC responds to unauthorized access after it occurs.

Answer

Proactive NAC utilizes only software solutions, while reactive NAC utilizes hardware solutions.

Answer

Reactive NAC utilizes only software solutions, while proactive NAC utilizes hardware solutions.

Question 12

What is the process of verifying a device's identity in NAC termed?

Accepted Answer

Device authentication

Answer

Device profiling

Answer

Device fingerprinting

Answer

Device authorization

Question 13

Which of the following is a typical NAC policy?

Accepted Answer

Permitting access only to authorized users

Answer

Granting access to devices with known vulnerabilities

Answer

Allowing access to all devices irrespective of their security posture

Answer

Denying access to devices from specific IP addresses

Question 14

What is the purpose of implementing network segmentation in NAC?

Accepted Answer

Limiting the propagation of security breaches

Answer

Enhancing network performance

Answer

Simplifying network management

Answer

Increasing the number of devices that can access the network

Question 15

Which of the following is NOT a potential challenge in implementing NAC?

Accepted Answer

Simplicity of implementation

Answer

Cost of deployment

Answer

Device compatibility issues

Answer

Lack of skilled administrators

Question 16

What is the recommended best practice for managing NAC devices and policies?

Accepted Answer

Centralized management using a single console

Answer

Manual configuration of each device individually

Answer

Employing a combination of automated and manual methods

Answer

Outsourcing management to a third-party vendor

Question 17

Which of the following is a core component of a Network Access Control (NAC) system responsible for enforcing access control policies?

Accepted Answer

Network Access Device (NAD)

Answer

Intrusion Detection System (IDS)

Answer

Authentication Server

Answer

Security Information and Event Management (SIEM)

Question 18

What is the primary purpose of 802.1X, an authentication method commonly used in NAC implementations?

Accepted Answer

To provide secure network access authentication

Answer

To detect and block malicious network traffic

Answer

To monitor and report network security events

Answer

To manage network access permissions based on user roles

Question 19

Which of the following is a key benefit of utilizing role-based access control (RBAC) in a NAC system?

Accepted Answer

Efficient management of access permissions by grouping users based on their job functions or responsibilities

Answer

Enhanced network performance and scalability

Answer

Simplified authentication process for end-users

Answer

Stronger protection against unauthorized access

Question 20

What is the main objective of performing a posture assessment in a NAC context?

Accepted Answer

To evaluate the security posture of a device before granting access to the network

Answer

To identify and quarantine infected devices

Answer

To monitor network traffic for suspicious activity

Answer

To enforce access control policies based on user roles

Question 21

What is the primary advantage of utilizing a centralized management platform for NAC?

Accepted Answer

Simplified administration and monitoring of multiple NAC devices and policies from a single console or dashboard

Answer

Enhanced network performance and bandwidth utilization

Answer

Reduced cost of NAC deployment and maintenance

Answer

Improved security by preventing unauthorized changes to NAC configurations

Question 22

What is a potential challenge associated with implementing NAC in large and complex enterprise networks?

Accepted Answer

Managing the diversity of devices, operating systems, and applications across the network

Answer

Lack of skilled IT personnel with NAC expertise

Answer

High cost of NAC deployment and ongoing maintenance

Answer

Security risks associated with unauthorized access to NAC systems