Question

Which of the following is the most commonly used network protection barrier between the company's network and the outside world?

• A. Antivirus Software
• B. Digital Certificate
• C. Firewall
• D. Digital Wall

Hint:

A {Firewall} filters network traffic and prevents unauthorized access to internal networks.

Answer 1

The Correct Option is C

Step 1: Understanding network security.
Organizations connect their internal networks to the internet in order to access online services, share information, and communicate with other systems. However, this connection also exposes the network to potential cyber threats such as hackers, malware, and unauthorized access.
To protect internal systems from these threats, organizations use security mechanisms that act as barriers between the internal network and external networks.
Step 2: Role of a Firewall.
A Firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a protective barrier between a trusted internal network and untrusted external networks such as the internet.
Firewalls allow legitimate data to pass while blocking suspicious or harmful traffic.
Step 3: Analysis of options.
(A) Antivirus Software: Incorrect. Antivirus protects individual systems from malware but does not control network traffic.
(B) Digital Certificate: Incorrect. Digital certificates are used to verify identity in secure communication.
(C) Firewall: Correct. It acts as the main security barrier between internal networks and the internet.
(D) Digital Wall: Incorrect. This is not a standard security technology.
Step 4: Conclusion.
Therefore, the most commonly used protection barrier between a company's network and the outside world is a Firewall.
Final Answer: Firewall.