CVA Network Infrastructure & Security Weaknesses

Question 1

What is the role of a firewall in network infrastructure?

Accepted Answer

Block unauthorized access while permitting legitimate communication

Answer

A firewall acts as a security barrier, monitoring and controlling incoming and outgoing network traffic based on predetermined security rules. Its primary role is to establish a robust defense between a trusted internal network and untrusted external networks, like the internet. By filtering traffic, firewalls prevent unauthorized access and malicious activities while ensuring legitimate data flow for business operations.

Question 2

Which device connects multiple networks together?

Accepted Answer

Router

Answer

A router is a network device that forwards data packets between different computer networks. It operates at Layer 3 (the network layer) of the OSI model, using IP addresses to determine the best path for data transmission. Routers are essential for connecting local area networks (LANs) to wide area networks (WANs), such as the internet, enabling communication across disparate network segments.

Question 3

What is a common weakness found in wireless networks?

Accepted Answer

Weak or default passwords

Answer

A common and significant weakness in wireless networks is the use of weak, easily guessable, or default passwords. Many devices come with factory-set default credentials that are publicly known, or users choose simple passwords for convenience. Attackers can easily exploit these to gain unauthorized access to the network, compromising data and potentially launching further attacks.

Question 4

What can an open port on a network indicate?

Accepted Answer

Potential security risk

Answer

An open port on a network device indicates that a service is listening for incoming connections on that specific port. While some open ports are necessary for legitimate services to function, an unnecessary or misconfigured open port can expose a system to potential attacks. Attackers can exploit these open ports to gain unauthorized access, inject malware, or launch denial-of-service attacks, making them a significant security risk.

Question 5

What is the purpose of network segmentation?

Accepted Answer

Enhance security by isolating segments

Answer

Network segmentation involves dividing a computer network into multiple smaller, isolated subnetworks or segments. The primary purpose is to enhance security by creating boundaries that restrict the lateral movement of threats. If one segment is compromised, the attack is contained, preventing it from spreading to other critical parts of the network, thereby reducing the overall attack surface and improving control over traffic flow.

(CVA) Certified Vulnerability Assessor Practice Test

(CVA) Certified Vulnerability Assessor Practice Test

CVA Network Infrastructure & Security Weaknesses