Computer and Network Security

5 minutes 5 Questions

Computer and Network Security focuses on the protection of computing devices, network infrastructure, and data from unauthorized access, modification, destruction, and disclosure. It involves the implementation and management of various security controls, such as firewalls, intrusion detection and prevention systems, virtual private networks, and network segmentation. Additionally, it includes the establishment and enforcement of security policies, procedures, and best practices to ensure the confidentiality, integrity, and availability of information and resources. Computer and network security is a vital component of an organization's overall security posture, as it helps safeguard valuable assets, maintain business continuity, and protect the organization's reputation.

Guide on Computer and Network Security

What is Computer and Network Security?
Computer and Network Security is a branch of computer science that focuses on the safeguarding computer systems and network infrastructures. This field is geared towards protecting the integrity of networks, devices, programmes, and data from theft and damage.
Why is it important?
The importance of computer and network security lies in its ability to prevent unauthorized access to or from private networks. Protecting sensitive data and systems from cyber threats can prevent severe financial and reputational consequences for businesses.
How does it work?
It works by implementing multiple layers of protection, measures and controls in place that include firewalls, intrusion prevention systems (IPS), antimalware and antispyware software, and virtual private networks (VPNs).
Exam Tips: Answering Questions on Computer and Network Security
1. Understand key terms and concepts - The questions will often involve key technical terminology.
2. Practice problem-solving scenarios – Many exam questions are case studies involving security threats or vulnerabilities. Practice your problem-solving skills by studying similar scenarios.
3. Review recent breaches and ways they could have been prevented – By understanding real-world examples, you can better understand theoretical concepts.
4. Double-check your answers – Especially when it comes to numerical questions or when a single question pertains multiple topics.

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Question 1

A company discovers unauthorized wireless access points within the office building. What measure should be taken to detect rogue access points in the future?

Implement MAC address filtering Conduct regular wireless network scans Upgrade to a more advanced wireless router Increase Wi-Fi signal strength

Correct Answer: Conduct regular wireless network scans

Regular wireless network scans can help detect rogue access points. The other options focus on other security measures that do not directly address detecting rogue access points.

Question 2

A user's workstation is infected with ransomware. What should be done to recover the encrypted files?

Restore from a recent backup Attempt to decrypt the files using free online tools Reformat the hard drive Contact the attacker and pay the ransom

Correct Answer: Restore from a recent backup

Restoring from a recent backup is the safest and most reliable method of recovering encrypted files. The other answers may be ineffective, cause further damage, or support the attacker's activities.

Question 3

An organization has implemented perimeter-based security. However, they face the risk of an attacker bypassing the firewall. What can be done to decrease this risk?

Replace the firewall with a newer model Implement a defense-in-depth strategy Increase firewall rules complexity Disable all external connections

Correct Answer: Implement a defense-in-depth strategy

A defense-in-depth strategy consists of multiple layers of security throughout an organization's network, thus reducing the risk of an attacker bypassing the firewall. The wrong answers assume that improving the firewall itself will protect against bypassing, which is not as effective as implementing a multilayered security approach.

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