[2023年最新] リアルなISA問題集を使って 100%無料ISA-IEC-62443試験問題集
リアルISA-IEC-62443問題集で最新のISA練習テスト問題集
質問 # 36
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 uses explicit source and destination IP addresses and a sinqle known TCP port.
- B. Modbus has no known security vulnerabilities, so firewall rules are simple to implement.
- C. Modbus uses a single master to communicate with multiple slaves usinq simple commands.
- D. Modbus is a proprietary protocol that is widely supported by vendors.
正解：A
質問 # 37
What are the two sublayers of Layer 2?
Available Choices (select all choices that are correct)
- A. VLAN and VPN
- B. HIDS and NIDS
- C. LLC and MAC
- D. OPC and DCOM
正解：C
質問 # 38
Which layer specifies the rules for Modbus Application Protocol
Available Choices (select all choices that are correct)
- A. Data link layer
- B. Presentation layer
- C. Application layer
- D. Session layer
正解：C
質問 # 39
What is the name of the protocol that implements serial Modbus over Ethernet?
Available Choices (select all choices that are correct)
- A. MODBUS/TCP
- B. MODBUS/Ethernet
- C. MODBUS/CIP
- D. MODBUS/Plus
正解：A
質問 # 40
Which is an important difference between IT systems and IACS?
Available Choices (select all choices that are correct)
- A. The IACS security priority is integrity.
- B. IACS cybersecurity must address safety issues.
- C. The IT security priority is availability.
- D. Routers are not used in IACS networks.
正解：B
質問 # 41
Which is the PRIMARY objective when defining a security zone?
Available Choices (select all choices that are correct)
- A. All assets in the zone must be from the same vendor.
- B. All assets in the zone must be at the same level in the Purdue model.
- C. All assets in the zone must be physically located in the same area.
- D. All assets in the zone must share the same security requirements.
正解：D
質問 # 42
Authorization (user accounts) must be granted based on which of the following?
Available Choices (select all choices that are correct)
- A. Common needs for large groups
- B. Specific roles
- C. Individual preferences
- D. System complexity
正解：B
質問 # 43
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)
- A. They are very inexpensive to design and deploy.
- B. Modern IDS recognize IACS devices by default.
- C. They require a small amount of care and feeding
- D. They are effective against known vulnerabilities.
正解：B
質問 # 44
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. Cyber Security Monitoring System
- C. Control System Monitoring System
- D. Control System Management System
正解：A
質問 # 45
Which steps are part of implementing countermeasures?
Available Choices (select all choices that are correct)
- A. Establish the risk tolerance and update the business continuity plan.
- B. Select common countermeasures and collaborate with stakeholders.
- C. Select common countermeasures and update the business continuity plan.
- D. Establish the risk tolerance and select common countermeasures.
正解：D
質問 # 46
What is OPC?
Available Choices (select all choices that are correct)
- A. A vendor-specific proprietary protocol for the communication of real-time plant data between control devices
- B. An open standard serial communications protocol widely used in industrial manufacturing environments
- C. An open standard protocol for the communication of real-time data between devices from different
manufacturers - D. An open standard protocol for real-time field bus communication between automation technology
devices
正解：C
質問 # 47
Which of the following attacks relies on a human weakness to succeed?
Available Choices (select all choices that are correct)
- A. Escalation-of-privileges
- B. Denial-of-service
- C. Phishing
- D. Spoofing
正解：C
質問 # 48
Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?
Available Choices (select all choices that are correct)
- A. Level 1: Supervisory Control
- B. Level 4: Process
- C. Level 2: Quality Control
- D. Level 3: Operations Management
正解：D
質問 # 49
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)
- A. To validate that security policies and procedures are performing
- B. To meet regulations
- C. To confirm audit procedures
- D. To adhere to a published or approved schedule
正解：A
質問 # 50
Which of the following refers to internal rules that govern how an organization protects critical system
resources?
Available Choices (select all choices that are correct)
- A. Formal guidance
- B. Security policy
D- Code of conduct - C. Legislation
正解：B
質問 # 51
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