CND Network Security Controls & Protocols

Question 1

What is the primary purpose of firewalls in network security?

Accepted Answer

To act as a barrier and filter network traffic based on security rules

Answer

To monitor internal network traffic only

Answer

To allow unrestricted access to all network traffic

Answer

To encrypt sensitive network data

Question 2

Which of the following protocols is used to secure communications on the internet?

Accepted Answer

TLS (Transport Layer Security)

Answer

HTTP

Answer

FTP

Answer

Telnet

Question 3

What is the function of Intrusion Detection Systems (IDS)?

Accepted Answer

To monitor and alert on suspicious activities or breaches

Answer

To prevent attacks by blocking incoming traffic

Answer

To prevent all network traffic

Answer

To scan emails for viruses

Question 4

How does Virtual Private Network (VPN) enhance network security?

Accepted Answer

By securing the connection and encrypting data transmission

Answer

By compressing network traffic

Answer

By allowing unencrypted data to flow freely over the network

Answer

By preventing any network traffic from reaching external destinations

Question 5

Which network security measure is used to authenticate users based on their physical characteristics?

Accepted Answer

Biometric authentication

Answer

Password protection

Answer

Smartcards

Answer

Username and password combinations

Question 6

What does encryption do in the context of network security?

Accepted Answer

It encodes data to prevent unauthorized access

Answer

It makes data readable by all users

Answer

It allows unrestricted access to sensitive data

Answer

It simplifies the security protocols used by the network

Question 7

What is the role of a network access control (NAC) system?

Accepted Answer

To enforce security policies and control access based on device compliance

Answer

To monitor network traffic for breaches

Answer

To block all network traffic

Answer

To encrypt all data packets on the network

Question 8

What is the primary function of a Demilitarized Zone (DMZ) in a network?

Accepted Answer

To provide a secure zone for public-facing services while protecting internal networks

Answer

To protect the network from internal attacks

Answer

To prevent all external network traffic

Answer

To store backup data securely

Question 9

What is the role of a security policy in a network security plan?

Accepted Answer

To define rules for protecting network resources and ensure consistent security practices

Answer

To allow unrestricted network access

Answer

To eliminate all security measures and allow free access

Answer

To prevent the use of any security tools