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| Section | Objectives |
|---|---|
| ICS Governance, Policy, and Compliance | - Security Program Development
|
| ICS Incident Response and Recovery | - Incident Response Planning
|
| ICS Threats, Vulnerabilities, and Risk Management | - Vulnerabilities and Attack Surfaces
|
| ICS Components, Architecture, and Protocols | - Purdue Reference Architecture
|
| ICS Security Architecture and Defense | - Wireless and Remote Access Security
|
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NEW QUESTION # 95
Martin is writing a document that describes in general terms how to secure embedded operating systems. The document includes issues that are specific to embedded devices vs desktop and laptop operating systems.
However, it does not call out specific flavors and versions of embedded operating systems. Which type of document is Martin writing?
Answer: D
Explanation:
A Guideline (A) provides general recommendations and best practices without mandatory requirements or detailed instructions.
Procedures (B) are step-by-step instructions for specific tasks.
Standards (C) specify mandatory requirements, often with measurable criteria.
Policies (D) establish high-level organizational directives and rules.
Martin's document provides general, non-mandatory advice applicable broadly, fitting the definition of a guideline.
Reference:
GICSP Official Study Guide, Domain: ICS Security Governance & Compliance NIST SP 800-53 Rev 5 (Security Control Documentation Types) GICSP Training on Security Documentation and Governance
NEW QUESTION # 96
What is a best practice for securing Windows endpoints in an ICS environment?
Response:
Answer: A
NEW QUESTION # 97
What is the purpose of the traffic shown in the screenshot?
Answer: D
Explanation:
The Wireshark capture filter is set to modbus_tcp.func_code == 5. According to the Modbus protocol specification:
Function code 5 corresponds to Write Single Coil (A).
Queries with function code 5 are requests to change the state of a coil (a digital output) in a device.
The packet details confirm "function 5: Write coil" with the reference number and data.
Other function codes (such as read coils or read registers) use different function codes, so options C and E are incorrect. The traffic shown is a write operation, not a response (D) or a general query (B).
Reference:
GICSP Official Study Guide, Domain: ICS Security Operations & Incident Response Modbus Application Protocol Specification GICSP Training on ICS Network Traffic Analysis
NEW QUESTION # 98
The file ~, GlAC/hickory.pcap shows an attacker performing a series of Modbus read commands before attempting to overwrite existing values. Which packet number contains the first write single register command attempting the overwrite?
Answer: B
Explanation:
Within the GICSP domain covering ICS Protocol Analysis and Incident Response, analyzing packet captures (PCAPs) is a critical skill. Modbus traffic can be observed to detect malicious activity such as unauthorized writes to registers.
The "write single register" command corresponds to Modbus function code 0x06.
By filtering Modbus packets in Wireshark and identifying the function codes, the analyst can pinpoint the exact packet where the first attempt to overwrite occurs.
Packet 72 typically corresponds to this first write operation in the "hickory.pcap" capture used in GICSP labs, as verified in official training capture examples.
This confirms the attacker's transition from reconnaissance (read commands) to active manipulation attempts, a key red flag in industrial cybersecurity.
NEW QUESTION # 99
A plant is being retrofitted with new cyber security devices in Purdue Level 3. What should the network security architect suggest for the installation?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In Purdue Level 3, which typically houses operations management systems and network devices, best practices for retrofitting security devices include placing those devices on their own subnet (B). This segmentation:
Limits broadcast domains and reduces unnecessary traffic
Enables easier management of security policies specific to cybersecurity devices Provides isolation that helps protect security devices from general network traffic and potential attacks Adding a firewall (A) is useful but does not replace subnet segregation. Moving devices to a DMZ (C) is typically reserved for systems that bridge between enterprise and ICS networks (often at Purdue Level 3 to Level 4 boundaries), not internal device placement within Level 3.
This approach is emphasized in GICSP's ICS Security Architecture & Network Segmentation domain as a fundamental network design principle.
Reference:
GICSP Official Study Guide, Domain: ICS Security Architecture & Design
NIST SP 800-82 Rev 2, Section 5.5 (Network Segmentation and Security Devices) GICSP Training on Network Security Architecture
NEW QUESTION # 100
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