...................is a network security system that oversees the control of incoming and outgoing network traffic based on predetermined security rules.

1. A

   Firewall

2. B

   Anti-virus

3. C

   VPN

4. D

   HTTPS

Appeared in: NIA - 29 January 2023

Explanation

• A firewall is a network security device that monitors and filters incoming and outgoing network traffic.
• It acts as a barrier between a trusted network (like a hospital's internal network) and an untrusted network (like the internet).
• It makes decisions to allow or block traffic based on a predefined set of security rules, which directly matches the function described in the question.

Why Other Options Were Wrong

• Option B: Anti-virus software operates at the device level to detect and remove malicious software. It does not function as a network-level traffic filter.
• Option C: A VPN (Virtual Private Network) is used to create a secure, encrypted connection over a public network. Its primary function is privacy and secure remote access, not filtering traffic based on rules.
• Option D: HTTPS is a protocol that encrypts the data communication between a web browser and a website. It secures data in transit for a specific connection, but it is not a system that manages all network traffic.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Network Security Principles as background academic context rather than a clinical decision trigger.
• In healthcare, firewalls are essential for protecting hospital networks that contain sensitive Electronic Health Records (EHRs), patient monitoring systems, and connected medical devices.
• Properly configured firewalls are a key technical safeguard required under HIPAA to prevent unauthorized access to Protected Health Information (PHI).
• What if? - If a hospital's firewall fails or is poorly configured, the entire network becomes vulnerable to cyberattacks like ransomware. This could lock access to patient records, disable critical medical equipment, and force the cancellation of procedures, directly endangering patient safety.

How to Approach the Question

• First, break down the definition provided in the question: 1) It's a 'network security system,' 2) it 'controls incoming and outgoing traffic,' and 3) it uses 'predetermined security rules.'
• Consider the function of each option in the context of network security.
• Anti-virus software works on individual devices, not the network traffic itself.
• A VPN encrypts traffic for privacy but doesn't filter it based on general rules.
• HTTPS is a protocol to encrypt a specific web connection, not a system to manage the whole network.
• A Firewall is specifically designed as a network gatekeeper that filters all traffic according to a set of rules. This function is a perfect match for the definition in the question.

Concept Tested & Keywords

• Concept Tested: Network Security Principles
• Stem keywords: network security system, incoming and outgoing network traffic, predetermined security rules
• Lead-in keywords: is a
• Negative lead-in flag: false

Question ID

QsC7skiXtbddEwn6Uu3GYS

Copy ID

Reference Book

E6 Nursing Fundamentals Potter Perry 12e Part 2 pp. 156-158, 167-169