Which of the following is true of network security?

The correct answer is B. A firewall is a necessity in today's connected world.. A firewall is a fundamental and necessary security control in any modern networked environment. It monitors and controls incoming and outgoing network traffic based on predefined security rules, forming a barrier between trusted internal networks and untrusted external ones (e.g.

Submitted by jian89· Apr 18, 2026Network and Communications Security

Question

Which of the following is true of network security?

Options

AA firewall is a not a necessity in today's connected world.
BA firewall is a necessity in today's connected world.
CA whitewall is a necessity in today's connected world.
DA black firewall is a necessity in today's connected world.

How the community answered

(43 responses)

A
5% (2)
B
91% (39)
C
2% (1)
D
2% (1)

Explanation

A firewall is a fundamental and necessary security control in any modern networked environment. It monitors and controls incoming and outgoing network traffic based on predefined security rules, forming a barrier between trusted internal networks and untrusted external ones (e.g., the internet). Options C and D reference 'whitewall' and 'black firewall,' which are not real networking or security terms. Option A is incorrect because firewalls remain an essential layer of defense in today's threat landscape.

Topics

#Firewall#Network Security#Security Controls

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