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| Section | Objectives |
|---|---|
| Industrial Security Architecture and Defense | - Defensive architectures
|
| Industrial Control Systems Security Fundamentals | - Industrial protocols and communications
|
| Industrial Cybersecurity Risk and Vulnerability Management | - Vulnerability management in ICS
|
| Incident Response and Operational Security | - Operational continuity and safety
|
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NEW QUESTION # 11
An attacker crafts an email that will send a user to the following site if they click a link in the message. What else is necessary for this type of attack to work?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The URL indicates a command to disconnect a sensor on an HMI interface, likely part of a Cross-Site Request Forgery (CSRF) or similar web-based attack.
For such an attack to succeed, the user must be authenticated to the HMI interface before clicking the link (C), so that the request is executed with valid session privileges.
(A) Obtaining a session cookie would help but is not strictly necessary if the user is already authenticated.
(B) User administrative rights may not be necessary depending on HMI design, but authentication is essential.
(D) URL parameters generally don't require script tags unless exploiting Cross-Site Scripting (XSS).
GICSP emphasizes authentication and session management as critical controls to mitigate web-based attacks on ICS interfaces.
Reference:
GICSP Official Study Guide, Domain: ICS Security Operations & Incident Response OWASP Top 10 Web Application Risks (Referenced in GICSP) GICSP Training on Web Security in ICS
NEW QUESTION # 12
Which protocol is commonly used to establish secure communication between remote devices in an ICS network?
Response:
Answer: A
NEW QUESTION # 13
A brewer uses a local HMI to communicate with a controller that opens a pump to move the workfrom the boil kettle to the fermentor. What level of the Purdue model would the controller be considered?
Answer: E
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The Purdue Enterprise Reference Architecture (PERA) model, commonly used in ICS security frameworks like GICSP, segments industrial control systems into hierarchical levels that correspond to the function and control of devices:
Level 0: Physical process (sensors and actuators directly interacting with the process) Level 1: Basic control level (controllers such as PLCs or DCS controllers that execute control logic and command actuators) Level 2: Supervisory control (HMIs, SCADA supervisory systems that interface with controllers) Level 3: Operations management (Manufacturing Execution Systems, batch control, production scheduling) Level 4: Enterprise level (business systems, ERP, corporate IT) In this scenario, the controller opening the pump is a device executing control logic directly on the process, placing it at Level 1. The local HMI used to communicate with the controller is at Level 2, supervising and providing operator interface.
This classification is foundational in GICSP's ICS Fundamentals and Architecture domain, which emphasizes clear understanding of network segmentation and device role for security zoning.
Reference:
GICSP Official Study Guide, Domain: ICS Fundamentals & Architecture
Purdue Model description in IEC 62443 and NIST SP 800-82
GICSP Training materials on Purdue Model and Network Segmentation
NEW QUESTION # 14
Based on the following diagram, how many Active Directory domains should be created for this network?
Answer: A
Explanation:
The diagram shows two networks (Business Network and Control Server Network) connected by a switch, suggesting a single organization's infrastructure with logical segmentation.
Best practices per GICSP for ICS and enterprise network integration recommend a single Active Directory domain with groups and organizational units to separate roles and permissions. This approach simplifies management, maintains centralized authentication, and supports role-based access control.
Creating multiple domains (B or C) introduces unnecessary complexity and potential trust relationship issues.
A transitive trust (D) is relevant when multiple domains exist, which is not required here.
The GICSP framework supports minimizing complexity in domain design to reduce attack surfaces while maintaining proper segmentation through groups and policies.
Reference:
GICSP Official Study Guide, Domain: ICS Security Governance & Compliance Microsoft Active Directory Best Practices (Referenced in GICSP) GICSP Training on Identity and Access Management
NEW QUESTION # 15
Which type of device is the following configuration setting from?
deny modbus function write-multiple-holdingregisters
Answer: D
Explanation:
The configuration line denies a specific Modbus function code, which is a command-level filter for industrial protocols.
This type of control is typical of an application firewall (D) designed to understand and filter industrial control system protocols at the application layer.
A network firewall (A) typically filters traffic based on IP addresses, ports, and protocols, but not protocol function codes.
NIDS (B) detects and alerts on suspicious traffic but does not usually enforce blocking rules.
SIEM (C) collects and analyzes logs, not real-time blocking.
GICSP emphasizes the role of application-layer firewalls in protecting ICS protocols like Modbus.
Reference:
GICSP Official Study Guide, Domain: ICS Security Architecture & Design
NIST SP 800-82 Rev 2, Section 5.5 (Application Layer Security)
GICSP Training on ICS Protocol Security Controls
NEW QUESTION # 16
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