Homework Help: Questions and Answers: What role do Intrusion Detection Systems (IDS) play in a network?
A. They enhance the speed of data transmission.
B. They manage network routing.
C. They detect and filter packets based on predetermined patterns.
D. They compress and cache content.
E. They rewrite header fields in data packets.
Answer:
Intrusion Detection Systems (IDS) play a key role in securing networks by monitoring and analyzing network traffic for suspicious activity or known threats. Let’s analyze each given option step by step:
Given Options: Step by Step Answering
a) They enhance the speed of data transmission.
- IDS are not primarily designed to enhance the speed of data transmission. Their role is to monitor and analyze, not to optimize network speed.
b) They manage network routing
- Network routing is typically managed by routers and switches, not IDS. IDS do not handle routing decisions for data packets.
c) They detect and filter packets based on predetermined patterns
- This is the correct role of IDS. They monitor network traffic and detect malicious activity by matching network traffic against known signatures or predefined rules (patterns). IDS can also generate alerts when such patterns are detected.
d) They compress and cache content.
- Compressing and caching content is related to performance optimization technologies such as Content Delivery Networks (CDNs), not IDS.
e) They rewrite header fields in data packets.
- Rewriting header fields in data packets is typically handled by Network Address Translation (NAT) or proxies, not by IDS.
Final Answer:
Based on the above analysis, the correct answer is:
C. They detect and filter packets based on predetermined patterns.
This accurately describes the main role of an IDS in a network: to monitor traffic for suspicious patterns and alert or take action when potential threats are detected.
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