Which tool detects unauthorized access attempts in real time? Learn how an Intrusion Detection System (IDS) monitors network traffic and alerts administrators to suspicious activity—essential for Cisco Certified Support Technician (CCST) Cybersecurity 100-160 exam success.
Table of Contents
Question
A network administrator wants to detect unauthorized access attempts in real time. Which security solution should they use?
A. Firewall
B. VPN
C. Network Access Control (NAC)
D. Intrusion Detection System (IDS)
E. DNS filtering
Answer
D. Intrusion Detection System (IDS)
Explanation
IDS monitors network traffic for suspicious activities and alerts administrators.
The most effective security solution for detecting unauthorized access attempts in real time is an Intrusion Detection System (IDS).
- An IDS continuously monitors network traffic and system activities to identify suspicious behavior, unauthorized access attempts, and security threats as they occur.
- When the IDS detects anomalous activities—such as repeated failed logins or unusual network patterns—it generates real-time alerts for security administrators, enabling immediate investigation and response.
- IDS solutions can be network-based (NIDS), monitoring traffic across the network, or host-based (HIDS), focusing on individual devices.
- Unlike firewalls, which primarily block or allow traffic based on predefined rules, IDS focuses on deep traffic analysis and behavior monitoring, specifically to detect and alert on potential intrusions.
- Real-time detection is critical for minimizing the impact of security incidents by enabling rapid response before significant damage occurs.
An IDS monitors network traffic for suspicious activities and alerts administrators in real time, making it the preferred solution for detecting unauthorized access attempts as they happen.
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