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NEW QUESTION # 12
Why is OPC Classic considered firewall unfriendly?
Available Choices (select all choices that are correct)
- A. OPC Classic is allowed to use only port 80.
- B. OPC Classic works with control devices from different manufacturers.
- C. OPC Classic uses DCOM, which dynamically assigns any port between 1024 and 65535.
- D. OPC Classic is an obsolete communication standard.
Answer: C
NEW QUESTION # 13
What does the abbreviation CSMS round in ISA 62443-2-1 represent?
Available Choices (select all choices that are correct)
- A. Cyber Security Management System
- B. Control System Monitoring System
- C. Cyber Security Monitoring System
- D. Control System Management System
Answer: A
NEW QUESTION # 14
Which is the BEST practice when establishing security zones?
Available Choices (select all choices that are correct)
- A. Security zones should align with physical network segments.
- B. Assets within the same logical communication network should be in the same security zone.
- C. Security zones should contain assets that share common security requirements.
- D. All components in a large or complex system should be in the same security zone.
Answer: C
NEW QUESTION # 15
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)
- A. Unauthorized access
- B. Race conditions
- C. Privilege escalation
- D. Buffer overflow
Answer: C
NEW QUESTION # 16
At Layer 4 of the Open Systems Interconnection (OSI) model, what identifies the application that will handle a
packet inside a host?
Available Choices (select all choices that are correct)
- A. A TCP/UDP host ID
- B. ATCP/UDP registry number
- C. ATCP/UDP application ID
- D. ATCP/UDP port number
Answer: D
NEW QUESTION # 17
Which is the implementation of PROFIBUS over Ethernet for non-safetv-related communications?
Available Choices (select all choices that are correct)
- A. PROFINET
- B. PROFIBUS DP
- C. PROF1SAFE
- D. PROFIBUS PA
Answer: A
NEW QUESTION # 18
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)
- A. Modbus has no known security vulnerabilities, so firewall rules are simple to implement.
- B. Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.
- C. Modbus is a proprietary protocol that is widely supported by vendors.
- D. Modbus uses a single master to communicate with multiple slaves usinq simple commands.
Answer: B
NEW QUESTION # 19
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)
- A. Business recovery and risk elimination or mitigation
- B. Business rationale and risk reduction and avoidance
- C. Business rationale and risk identification and classification
- D. Risk evaluation and risk identification
Answer: C
NEW QUESTION # 20
What is the name of the protocol that implements serial Modbus over Ethernet?
Available Choices (select all choices that are correct)
- A. MODBUS/Ethernet
- B. MODBUS/CIP
- C. MODBUS/Plus
- D. MODBUS/TCP
Answer: D
NEW QUESTION # 21
What are three possible entry points (pathways) that could be used for launching a cyber attack?
Available Choices (select all choices that are correct)
- A. LAN, power source, and wireless OD.
- B. LAN, WAN, and hard drive
- C. LAN, portable media, and wireless
- D. LAN, portable media, and hard drives
Answer: C
NEW QUESTION # 22
The Risk Analysis category contains background information that is used where?
Available Choices (select all choices that are correct)
- A. (Elements external to the CSMS
- B. Many other elements in the CSMS
- C. Only the Assessment element
- D. Only the Risk ID element
Answer: D
NEW QUESTION # 23
Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: B
NEW QUESTION # 24
Which communications system covers a large geographic area?
Available Choices (select all choices that are correct)
- A. Wide Area Network (WAN)
- B. Storage Area Network
- C. Local Area Network (LAN)
- D. Campus Area Network (CAN)
Answer: A
NEW QUESTION # 25
Which service does an Intrusion Detection System (IDS) provide?
Available Choices (select all choices that are correct)
- A. It is the lock on the door for networks and computer systems.
- B. It detects attempts to break into or misuse a computer system.
- C. It is effective against all vulnerabilities in networks and computer systems.
- D. It blocks malicious activity in networks and computer systems.
Answer: B
NEW QUESTION # 26
What is defined as the hardware and software components of an IACS?
Available Choices (select all choices that are correct)
- A. Cybersecuritv
- B. Control system
- C. COTS software and hardware
- D. Electronic security
Answer: B
NEW QUESTION # 27
Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)
- A. API 1164
- B. ISA-62443 (EC 62443)
- C. NIST SP800-82
- D. ISO 27001
Answer: A
NEW QUESTION # 28
Within the National Institute of Standards and Technoloqv Cybersecuritv Framework v1.0 (NIST CSF), what
is the status of the ISA 62443 standards?
Available Choices (select all choices that are correct)
- A. They are not used.
- B. They are used as normative references.
- C. They are under consideration for future use.
- D. They are used as informative references.
Answer: D
NEW QUESTION # 29
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)
- A. To meet regulations
- B. To validate that security policies and procedures are performing
- C. To adhere to a published or approved schedule
- D. To confirm audit procedures
Answer: B
NEW QUESTION # 30
Which of the following is an activity that should trigger a review of the CSMS?
Available Choices (select all choices that are correct)
- A. New technical controls
- B. Budgeting
- C. Organizational restructuring
- D. Security incident exposing previously unknown risk.
Answer: D
NEW QUESTION # 31
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