CSA Network and Security Administration

Question 1

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

Accepted Answer

Answer

A firewall acts as a security barrier, controlling incoming and outgoing network traffic based on predefined security rules. Its primary purpose is to prevent unauthorized access to a private network and monitor data packets, blocking malicious traffic while allowing legitimate communications, thereby protecting the network from external threats.

Question 2

What is a Virtual Private Network (VPN) used for?

Accepted Answer

Answer

A Virtual Private Network (VPN) creates a secure, encrypted connection over a less secure network, such as the internet. It is primarily used to allow users to securely access private network resources remotely or to browse the internet privately, protecting data from eavesdropping and ensuring anonymity and data integrity.

Question 3

Which protocol is commonly used to secure communications over a network?

Accepted Answer

Answer

SSL (Secure Sockets Layer) and its successor, TLS (Transport Layer Security), are cryptographic protocols designed to provide secure communication over a computer network. They are widely used to encrypt data transmitted between web servers and browsers, ensuring privacy and data integrity for online transactions and sensitive information, making them essential for secure web browsing.

Question 4

What is two-factor authentication (2FA)?

Accepted Answer

Answer

Two-factor authentication (2FA) enhances security by requiring users to provide two different types of credentials from distinct categories. These categories typically include something the user *knows* (like a password), something the user *has* (like a phone or token), and something the user *is* (like a fingerprint). By combining two of these factors, 2FA significantly reduces the risk of unauthorized access even if one factor is compromised.

Question 5

What is the role of an intrusion detection system (IDS)?

Accepted Answer

Answer

An Intrusion Detection System (IDS) is designed to monitor network or system activities for malicious activity or policy violations. Its primary role is to identify potential security breaches, such as unauthorized access attempts or malware, and then alert administrators to these events. Unlike an Intrusion Prevention System (IPS), an IDS typically focuses on detection and alerting rather than actively blocking traffic.

(CSA) Certified System Administrator Practice Test

(CSA) Certified System Administrator Practice Test

CSA Network and Security Administration