ISA BUNDLED EXAMS PRACTICE SOLUTION TESTED QUESTIONS RELIABLE ANSWERS VIEW AHEAD STUDY PACK

ISA BUNDLED EXAMS PRACTICE SOLUTION
TESTED QUESTIONS RELIABLE ANSWERS
VIEW AHEAD STUDY PACK

⩥ OSI Layer 2.
Answer: - Data Link Layer
- Provides rules for framing, converting electrical signals to data, error
checking, physical addressing, media access control (MAC)
- LLC - Logistical Link Control
- MAC - Media Access Control
- ARP/RARP (ARP = IP to MAC)


⩥ OSI Layer 1.
Answer: - Physical Layer
- Defines physics of getting message between devices
- Standards:
-- EIA-232, EIA-485 = Serial
-- Ethernet
-- 802.11x Wi Fi
- Hardware: Repeaters, Hubs


⩥ WAN Strategies.

,Answer: - Enterprise WAN
- Carrier-managed WANs
- Internet


⩥ Local Area Network (LAN).
Answer: - Limited distance <10 KM
- Usually within single facility
- Names: Supervisory Networks, DCS Highways, PLC Highways,
Fieldbuses, Device Networks


⩥ Conduit Characteristics.
Answer: - Security Policies
- Asset Inventory
- Access Requirements & Controls
- Threats & Vulnerabilities
- Consequences of Security Breach
- Authorized Technologies
- Change Management
- Connected Zones ** (Distinguish between Conduit and Zone)


⩥ Zone Characteristics & Security Attributes.
Answer: - Security Policies

, - Asset Inventory (Physical, logical, S/W, Data)
- Access Requirements & Controls
- Threats & Vulnerabilities
- Consequences of Security Breach
- Authorized Technology
- Change Management Process


⩥ Reference Model.
Answer: Establishes a frame of reference


⩥ Types of Models.
Answer: - Reference Models
- Asset Models
- Reference Architecture (Configurations)
- Zone Model


⩥ Security Lifecycle.
Answer: 1) Assess Phase (Assign SL-T)
2) Develop & Implement Phase (Countermeasures implemented to meet
SL-T)
3) Maintain Phase (Audit, Test, Upgrade)