Free Cisco 200-901 Actual Exam Questions - Question 13 Discussion

Question No. 13
Which device is a system that monitors and controls incoming and outgoing network traffic based on
predetermined security rules?
Select one option, then reveal solution.
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KK
Kevin K.
2026-02-22

B tbh, routers do direct traffic between different networks and can have basic filtering features like ACLs, but they’re not primarily focused on enforcing detailed security policies. Firewalls are specifically built to monitor and control traffic based on security rules, which sets them apart from routers and switches. Load balancers just distribute workload, no real filtering. So while routers handle some traffic control, the key thing here is security-based traffic control, which points to C, the firewall.

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KK
Kevin K.
2026-02-16

C imo. Firewalls are the only ones that actually enforce security policies by filtering traffic based on rules. Switches just connect devices, routers direct traffic between networks, and load balancers distribute traffic loads but don’t check security rules. So if the question is about monitoring and controlling for security, it’s got to be the firewall.

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KK
Kevin K.
2026-01-18

C. A firewall is specifically designed to enforce security policies by monitoring and controlling network traffic based on set rules. Switches and routers direct traffic but don’t primarily focus on security filtering. Load balancers distribute traffic to servers but aren’t about enforcing security rules, so they don’t fit the description as well as firewalls do.

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KK
Kevin K.
2026-01-18

C/D? Firewalls definitely control traffic based on rules, but load balancers also manage traffic flow—though not specifically for security. So C still fits best for security rules.

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KK
Kevin K.
2026-01-17

Pretty sure they’re talking about the thing that checks traffic against security rules, so that would be C. Firewall. Is there any trick here or extra context?

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