Intrusion Detection and Prevention Systems: Master the Art of Cybersecurity Defense

Question 1

Which of the following is NOT an advantage of using an Intrusion Detection System (IDS)?

Accepted Answer

Improving the user experience

Answer

Detecting threats in real-time

Answer

Providing improved network security

Answer

Responding automatically to security incidents

Question 2

Which detection technique relies on comparing network events to known malicious patterns?

Accepted Answer

Signature-based detection

Answer

Anomaly-based detection

Answer

Heuristic-based detection

Answer

Behavior-based detection

Question 3

An IDS that continuously monitors network traffic and generates alerts when it detects suspicious activity is known as a:

Accepted Answer

Network Intrusion Detection System (NIDS)

Answer

Host Intrusion Detection System (HIDS)

Answer

Security Incident and Event Manager (SIEM) system

Answer

Threat Intelligence Platform

Question 4

Which of the following techniques is commonly used by attackers to evade anomaly-based IDS detection?

Accepted Answer

Mimicking normal network behavior

Answer

Exploiting previously unknown vulnerabilities

Answer

Encrypting network communication

Answer

Bribing IT personnel

Question 5

What is the primary function of a Security Information and Event Manager (SIEM) system in conjunction with an IDS?

Accepted Answer

Centralized log management and analysis

Answer

Network traffic monitoring and threat detection

Answer

Endpoint threat hunting and remediation

Answer

Vulnerability assessment and patching

Question 6

Which IDS deployment model involves placing the IDS device directly in the network path?

Accepted Answer

Inline deployment

Answer

Passive deployment

Answer

Hybrid deployment

Answer

Cloud-based deployment

Question 7

What is the purpose of using a database of known attack signatures in signature-based IDS?

Accepted Answer

To identify and block known malicious activity

Answer

To learn and adapt to new attack patterns

Answer

To detect anomalies and suspicious behavior

Answer

To generate incident reports and alerts

Question 8

What is the role of a honeypot in an intrusion detection system?

Accepted Answer

A decoy system designed to attract and study attackers

Answer

A network device that filters out malicious traffic

Answer

A software tool used for vulnerability scanning

Answer

A cloud-based platform for sharing threat intelligence

Question 9

Which of the following represents a significant trend in the evolution of intrusion detection and prevention systems?

Accepted Answer

Integration of artificial intelligence (AI) and machine learning (ML) techniques

Answer

Increased reliance on manual security monitoring

Answer

Exclusive focus on signature-based detection methods

Answer

Complete elimination of false positives in intrusion detection

Question 10

Anomaly-based Intrusion Detection System (IDS) detects intrusions by:

Accepted Answer

Analyzing network traffic for unusual or suspicious behavior

Answer

Comparing network traffic to a baseline of normal traffic

Answer

Matching network traffic against known patterns

Answer

Using machine learning algorithms to identify malicious activity

Question 11

Which of the following is a key difference between intrusion detection and intrusion prevention?

Accepted Answer

Detection systems only identify intrusions, while prevention systems can also block them

Answer

Detection systems are passive, while prevention systems are active

Answer

Detection systems are typically deployed on the perimeter of a network, while prevention systems are deployed within the network

Answer

Detection systems are more effective against known attacks, while prevention systems are more effective against unknown attacks

Question 12

Which of the following is NOT a type of network-based Intrusion Detection System (NIDS)?

Accepted Answer

Host-based

Answer

Stateful

Answer

Stateless

Answer

Hybrid

Question 13

Which type of IDS relies on matching known patterns to identify malicious activity?

Accepted Answer

Signature-based IDS

Answer

Anomaly-based IDS

Answer

Behavioral-based IDS

Answer

Rule-based IDS

Question 14

Which technique is used by anomaly-based IDS to detect malicious activity?

Accepted Answer

Deviation from normal behavior

Answer

Rule evaluation

Answer

Pattern matching

Answer

Behavioral analysis

Question 15

Which of the following is an advantage of using a host-based intrusion prevention system (IPS)?

Accepted Answer

Protects against targeted attacks on individual hosts

Answer

Offers centralized management and monitoring

Answer

Minimizes performance impact

Answer

Provides comprehensive network-wide visibility

Question 16

Which IDS deployment mode involves distributing sensors across multiple network devices?

Accepted Answer

Distributed

Answer

Centralized

Answer

Hybrid

Answer

Remote

Question 17

What is a significant challenge related to IDS evasion techniques?

Accepted Answer

They can evade detection by traditional IDS

Answer

They are becoming increasingly uncommon

Answer

They require specialized knowledge and resources

Answer

They always result in false positives

Question 18

Which of the following is a best practice for managing IDS alerts?

Accepted Answer

Prioritize alerts based on potential risk

Answer

Investigate all alerts immediately

Answer

Automate incident response for all alerts

Answer

Disable alerts that generate false positives without further analysis

Question 19

What is the primary function of threat intelligence in intrusion detection and prevention?

Accepted Answer

Provides insights into current and emerging threats

Answer

Updates IDS signatures and rules automatically

Answer

Eliminates the need for manual analysis of alerts

Answer

Automates incident response without human intervention

Question 20

What is the main purpose of an Intrusion Detection System (IDS)?

Accepted Answer

To identify and report unauthorized access attempts on a network or system

Answer

To actively block unauthorized access attempts on a network or system

Answer

To track normal network traffic patterns

Question 21

How does a signature-based Intrusion Detection System (IDS) work?

Accepted Answer

It compares network traffic to a database of known attack patterns

Answer

It uses artificial intelligence to predict and identify threats

Answer

It analyzes network traffic for unusual or unexpected behavior

Question 22

What is a key advantage of anomaly-based Intrusion Detection Systems (IDSs) over signature-based IDSs?

Accepted Answer

They can detect new and unknown attacks, also called 'zero-day' attacks

Answer

They are simpler to set up and manage, requiring less technical expertise

Answer

They generate fewer false alarms, reducing unnecessary alerts

Answer

They are generally considered more accurate at detecting all types of threats

Question 23

What is a major advantage of a Network Intrusion Detection System (NIDS) compared to a Host-based Intrusion Detection System (HIDS)?

Accepted Answer

A NIDS can monitor the entire network's traffic, providing a wider scope of protection

Answer

A NIDS tends to produce fewer false alarms than a HIDS

Answer

A NIDS is typically easier to set up and manage than a HIDS

Answer

A NIDS is generally more accurate at detecting intrusions than a HIDS

Question 24

What is a crucial best practice for setting up an Intrusion Detection System (IDS)?

Accepted Answer

Fine-tuning the IDS to minimize false alarms and ensure accurate detection

Answer

Configuring the IDS to block all network traffic for maximum security

Answer

Ignoring alerts from the IDS unless they are classified as critical

Answer

Enabling all available IDS rules to catch any potential threat

Question 25

What is a potential drawback of using an Intrusion Prevention System (IPS)?

Accepted Answer

An IPS can slow down network performance and introduce delays

Answer

An IPS is generally easy to set up and manage without special skills

Answer

An IPS does not require regular maintenance or updates

Answer

An IPS can always block all threats, providing complete protection

Question 26

What is a recommended practice for effectively monitoring and managing Intrusion Detection and Prevention Systems (IDPSs)?

Accepted Answer

Regularly check and analyze the logs and alerts generated by the IDPS

Answer

Turn off the IDPS during times when there is less network traffic

Answer

Ignore IDPS alerts unless they are assessed as being highly important

Answer

Update the IDPS signatures only when new vulnerabilities are publicly disclosed