CSX Protect and Secure Systems and Data 1 — Questions and Answers
Question 1: Which technology is essential for protecting data in transit?
- Firewall
- Data masking
- Encryption (Correct answer)
- Antivirus software
Correct answer: Encryption
Encryption is the process of transforming data into a coded format to prevent unauthorized access. When data is in transit, such as over networks or the internet, encryption protocols like TLS/SSL ensure that even if intercepted, the data remains unreadable and secure. This technology is essential for protecting the confidentiality and integrity of information as it moves between systems.
Question 2: Which access control model uses roles to determine access permissions?
- Discretionary Access Control (DAC)
- Role-Based Access Control (RBAC) (Correct answer)
- Mandatory Access Control (MAC)
- Rule-Based Access Control
Correct answer: Role-Based Access Control (RBAC)
Role-Based Access Control (RBAC) is an access control model that assigns permissions to users based on their specific roles within an organization. Instead of granting individual access rights, RBAC groups users with similar job functions and provides them with the necessary access for their assigned roles. This simplifies access management, enhances security, and ensures users only have access relevant to their duties.
Question 3: What is the main purpose of a firewall in network security?
- Encrypt data
- Scan emails
- Filter network traffic (Correct answer)
- Perform system backups
Correct answer: Filter network traffic
A firewall acts as a security barrier between a trusted internal network and untrusted external networks, such as the internet. Its main purpose is to monitor and control incoming and outgoing network traffic based on predefined security rules. By filtering traffic, firewalls prevent unauthorized access and block malicious data from entering or leaving the network.
Question 4: Which of the following is used to detect unauthorized changes in files?
- SIEM
- Firewall
- FIM (Correct answer)
- VPN
Correct answer: FIM
File Integrity Monitoring (FIM) systems are designed to continuously monitor critical operating system, application, and configuration files for unauthorized or unexpected changes. By comparing current file states against a known baseline, FIM can detect modifications that might indicate a security breach, malware infection, or misconfiguration. This proactive detection helps maintain system integrity and security.
Question 5: Which term refers to limiting user access to only what is necessary for their job?
- Zero trust
- Need-to-know principle
- Least privilege (Correct answer)
- Full access rights
Correct answer: Least privilege
The principle of least privilege dictates that users, programs, or processes should be granted only the minimum necessary access rights to perform their legitimate functions. This security best practice minimizes the potential damage from a compromised account or system, as an attacker would have limited permissions even if they gained access. It significantly reduces the attack surface and potential impact of security incidents.
Question 6: Which technology is used to securely access private networks over the internet?
- Proxy server
- VPN (Correct answer)
- Firewall
- Antivirus
Correct answer: VPN
A Virtual Private Network (VPN) creates a secure, encrypted connection over a less secure network, such as the internet. It establishes a 'tunnel' that protects data in transit from eavesdropping and ensures confidentiality and integrity. This technology allows users to securely access private network resources remotely, making it essential for remote work and secure communication over public networks.
CSX Protect and Secure Systems and Data 1
Which technology is essential for protecting data in transit?