GCIA · Question #1
You are the Network Administrator for a large corporate network. You want to monitor all network traffic on your local network for suspicious activities and receive a notification when a possible atta
The correct answer is B. Install a network-based IDS. A network-based IDS monitors all traffic across the local network segment and generates real-time alerts when it detects suspicious patterns or known attack signatures.
Question
You are the Network Administrator for a large corporate network. You want to monitor all network traffic on your local network for suspicious activities and receive a notification when a possible attack is in process. Which of the following actions will you take for this?
Options
- AEnable verbose logging on the firewall
- BInstall a network-based IDS
- CInstall a DMZ firewall
- DInstall a host-based IDS
How the community answered
(38 responses)- A5% (2)
- B76% (29)
- C3% (1)
- D16% (6)
Why each option
A network-based IDS monitors all traffic across the local network segment and generates real-time alerts when it detects suspicious patterns or known attack signatures.
Verbose firewall logging records traffic events for auditing but does not perform signature-based detection or send real-time attack alerts.
A network-based IDS is deployed at key network chokepoints to passively inspect all passing traffic against signature and anomaly baselines, providing full network-wide visibility. Unlike host-based solutions, it can detect attacks targeting any device on the segment without requiring agents on each host. It also includes built-in alerting to notify administrators of potential attacks as they occur.
A DMZ firewall enforces network zone segmentation and access control but does not inspect payload content for attack signatures or generate intrusion notifications.
A host-based IDS monitors only the individual machine on which it is installed and cannot observe traffic destined for other network hosts.
Concept tested: Network-based IDS deployment and monitoring role
Source: https://csrc.nist.gov/publications/detail/sp/800-94/final
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