A network administrator notices that an industrial IoT gateway periodically becomes unresponsive and reboots. After reviewing logs, it is discovered that the gateway received a series of malformed Modbus TCP packets with unexpected field values. Which attack technique is most likely being used?

A UDP flood that overwhelms the gateway's network interface

Fuzzing the network device with malformed inputs to cause crashes

A buffer overflow attack that injects malicious code into the gateway

A MAC spoofing attack that impersonates a trusted controller

What is the purpose of packet injection in a network attack?

To compress network traffic to save bandwidth

To monitor network traffic for analysis

To insert crafted packets into network traffic to alter communications or launch attacks

To encrypt packets for secure transmission

What is the purpose of fuzzing in the context of network security?

To monitor network traffic for suspicious activity

To encrypt network traffic for secure communication

To test how a device handles unexpected or malformed inputs

To authenticate users on the network

CertNexusCertified IoT Security Practitioner (CIoTSP)

Domain 3Objective 1

Objective 3.1 Identify Common Threats Used to Exploit Unsecure Network Services. CERTIFIED-IOT-SECURITY-PRACTITIONER Practice Questions (Page 5)

Part of the 3.0 Securing Network Services domain, which accounts for 14% of the CERTIFIED-IOT-SECURITY-PRACTITIONER exam.

29questions here

6free pages

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14%of the exam

Questions 21–25

21application · medium
A network administrator notices that an industrial IoT gateway periodically becomes unresponsive and reboots. After reviewing logs, it is discovered that the gateway received a series of malformed Modbus TCP packets with unexpected field values. Which attack technique is most likely being used?
Select an answer first
22foundation · easy
What is the purpose of packet injection in a network attack?
Select an answer first
23foundation · easy
Which type of address spoofing is commonly used to bypass MAC address filtering on a network?
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24foundation · easy
Which of the following is a UDP-based service that is commonly exploited due to its lack of connection state?
Select an answer first
25foundation · easy
What is the purpose of fuzzing in the context of network security?
Select an answer first

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Objective 3.1 Identify Common Threats Used to Exploit Unsecure Network Services. CERTIFIED-IOT-SECURITY-PRACTITIONER Practice Questions (Page 5)

Questions 21–25

A network administrator notices that an industrial IoT gateway periodically becomes unresponsive and reboots. After reviewing logs, it is discovered that the gateway received a series of malformed Modbus TCP packets with unexpected field values. Which attack technique is most likely being used?

What is the purpose of packet injection in a network attack?

Which type of address spoofing is commonly used to bypass MAC address filtering on a network?

Which of the following is a UDP-based service that is commonly exploited due to its lack of connection state?

What is the purpose of fuzzing in the context of network security?

Keep studying — 3.0 Securing Network Services