CCD Network Security 1

Question 1

Which of the following best describes the purpose of a firewall in a network?

Accepted Answer

To control access to and from the network.

Answer

A firewall serves as a critical security barrier that monitors and filters incoming and outgoing network traffic based on predefined security rules. Its primary purpose is to control access to and from a network, preventing unauthorized access and protecting internal systems from external threats. It acts as a gatekeeper, allowing only legitimate traffic to pass.

Question 2

Which protocol is commonly used to securely access a remote system?

Accepted Answer

SSH

Answer

SSH (Secure Shell) is a cryptographic network protocol that enables secure remote access to computers over an unsecured network. It provides strong authentication and encrypts all communication between the client and server, protecting against eavesdropping and tampering. This makes it the preferred protocol for remote administration and secure file transfers.

Question 3

What does the principle of least privilege entail in network security?

Accepted Answer

Providing the minimum access necessary for tasks.

Answer

The principle of least privilege is a fundamental security concept that dictates users, programs, or processes should be granted only the minimum access necessary to perform their intended functions. By limiting permissions, this principle minimizes the potential damage that could result from a security breach, error, or malicious activity. It reduces the attack surface and the impact of compromises.

Question 4

What is the main function of an Intrusion Detection System (IDS)?

Accepted Answer

To monitor and alert on potential threats.

Answer

An Intrusion Detection System (IDS) is designed to continuously monitor network traffic or system activities for malicious activity or policy violations. Upon detecting suspicious patterns or known attack signatures, the IDS generates alerts to security personnel. Its main function is to identify potential threats and provide warnings, rather than actively blocking them.

Question 5

Which device is used to connect multiple networks together and direct traffic between them?

Accepted Answer

Router

Answer

A router is a networking device that connects multiple networks together and directs data packets between them. It operates at the network layer (Layer 3) of the OSI model, using IP addresses to determine the best path for data to travel. Routers are essential for enabling communication between different local area networks (LANs) and connecting them to wider networks like the internet.

(CCD) Certified Cyber Defender Practice Test

(CCD) Certified Cyber Defender Practice Test

CCD Network Security 1