eJPT Network Security & Vulnerability

Question 1

What is the primary purpose of a firewall in network security?

Accepted Answer

To prevent unauthorized access to or from a private network.

Answer

A firewall acts as a critical security barrier, filtering incoming and outgoing network traffic based on a set of predefined security rules. Its primary purpose is to prevent unauthorized users or malicious software from gaining access to a private network. By controlling traffic flow, it protects sensitive data and systems from external threats.

Question 2

What is the difference between an IDS and an IPS in network security?

Accepted Answer

IDS monitors while IPS monitors and blocks attacks.

Answer

An Intrusion Detection System (IDS) monitors network traffic for suspicious activity and alerts administrators to potential threats. In contrast, an Intrusion Prevention System (IPS) not only monitors for threats but also actively takes steps to block or prevent those attacks in real-time. This makes an IPS a more proactive security measure, as it can stop malicious traffic before it reaches its target.

Question 3

What is the main goal of penetration testing?

Accepted Answer

To find and fix vulnerabilities in a network or system.

Answer

Penetration testing involves simulating real-world cyberattacks against a system, network, or application. The main goal is to proactively identify security weaknesses and vulnerabilities before malicious actors can exploit them. By uncovering these flaws, organizations can then implement necessary patches and improvements to strengthen their overall security posture.

Question 4

Which of the following is an example of a DDoS (Distributed Denial of Service) attack?

Accepted Answer

Flooding a server with traffic to cause disruption.

Answer

A Distributed Denial of Service (DDoS) attack involves overwhelming a target server, service, or network with a flood of internet traffic from multiple compromised computer systems. The sheer volume of requests exhausts the target's resources, making it unavailable to legitimate users. This disruption is the defining characteristic of a DDoS attack, aiming to deny service rather than steal data.

Question 5

What is the purpose of network encryption?

Accepted Answer

To prevent unauthorized access to data during transmission.

Answer

Network encryption transforms data into a coded format, making it unreadable to anyone without the correct decryption key. Its purpose is to protect the confidentiality and integrity of information as it travels across a network. This ensures that even if data is intercepted during transmission, unauthorized parties cannot understand or misuse it.

(eJPT) eLearnSecurity Junior Penetration Tester Certification Practice Test

(eJPT) eLearnSecurity Junior Penetration Tester Certification Practice Test

eJPT Network Security & Vulnerability