Which security device passively inspects network traffic for malicious patterns and raises alerts to administrators but does not automatically block the traffic?
Intrusion Prevention System (IPS)
Network Address Translation (NAT) device
Network Intrusion Detection System (NIDS)
Stateful firewall
A Network Intrusion Detection System (NIDS) examines packets traversing the network, compares them with known attack signatures or abnormal behavior, and generates alerts when it detects suspicious activity. Because it is a detection-rather than prevention-technology, it does not alter or drop the traffic it observes. In contrast, an Intrusion Prevention System (IPS) can actively block or reject packets, a stateful firewall enforces predefined access rules, and a Network Address Translation (NAT) device simply remaps IP addresses without performing threat detection.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All IT & Cybersecurity Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even bigger discounts than before.
Unlimited access to all performance questions and be prepared for the real thing.
All IT & Cybersecurity Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.