Get Instant Access to ISA-IEC-62443 Practice Exam Questions [Q51-Q67]

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QUESTION 51
Which is the implementation of PROFIBUS over Ethernet for non-safetv-related communications?
Available Choices (select all choices that are correct)

PROFIBUS DP

PROFIBUS PA

PROFINET

PROF1SAFE

QUESTION 52
Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?

Option A

Option B

Option C

Option D

QUESTION 53
Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?
Available Choices (select all choices that are correct)

Level 1: Supervisory Control

Level 2: Quality Control

Level 3: Operations Management

Level 4: Process

QUESTION 54
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)

Modbus uses a single master to communicate with multiple slaves usinq simple commands.

Modbus is a proprietary protocol that is widely supported by vendors.

Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.

Modbus has no known security vulnerabilities, so firewall rules are simple to implement.

QUESTION 55
Which of the following attacks relies on a human weakness to succeed?
Available Choices (select all choices that are correct)

Denial-of-service

Phishing

Escalation-of-privileges

Spoofing

QUESTION 56
Whose responsibility is it to determine the level of risk an organization is willing to tolerate?
Available Choices (select all choices that are correct)

Management

Legal Department

Operations Department

Safety Department

QUESTION 57
The Risk Analysis category contains background information that is used where?
Available Choices (select all choices that are correct)

Many other elements in the CSMS

(Elements external to the CSMS

Only the Assessment element

Only the Risk ID element

QUESTION 58
What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)

Uses a continuous stream

Uses different keys

Shares the same key OD.

Has lower network overhead

QUESTION 59
Which analysis method is MOST frequently used as an input to a security risk assessment?
Available Choices (select all choices that are correct)

Failure Mode and Effects Analysis

Job Safety Analysis

Process Hazard Analysis (PHA)

System Safety Analysis(SSA)

QUESTION 60
Which service does an Intrusion Detection System (IDS) provide?
Available Choices (select all choices that are correct)

It is the lock on the door for networks and computer systems.

It is effective against all vulnerabilities in networks and computer systems.

It blocks malicious activity in networks and computer systems.

It detects attempts to break into or misuse a computer system.

QUESTION 61
Which analysis method is MOST frequently used as an input to a security risk assessment?
Available Choices (select all choices that are correct)

Failure Mode and Effects Analysis

Job Safety Analysis(JSA)

Process Hazard Analysis (PHA)

System Safety Analysis(SSA)

QUESTION 62
What are the three main components of the ISASecure Integrated Threat Analysis (ITA) Program?
Available Choices (select all choices that are correct)

Software development security assurance, functional security assessment, and communications
robustness testing

Software robustness security testing, functional software assessment assurance, and essential security
functionality assessment

Communications robustness testing, functional security assurance, and software robustness
communications

Communication speed, disaster recovery, and essential security functionality assessment

QUESTION 63
Which is a role of the application layer?
Available Choices (select all choices that are correct)

Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC

Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC

Provides the mechanism for opening, closing, and managing a session between end-user application
processes

Delivers and formats information, possibly with encryption and security

QUESTION 64
How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)

QUESTION 65
Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)

ISA-62443 (EC 62443)

NIST SP800-82

API 1164

ISO 27001

QUESTION 66
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)

Risk evaluation and risk identification

Business rationale and risk reduction and avoidance

Business rationale and risk identification and classification

Business recovery and risk elimination or mitigation

QUESTION 67
What is the name of the protocol that implements serial Modbus over Ethernet?
Available Choices (select all choices that are correct)

MODBUS/CIP

MODBUS/Ethernet

MODBUS/Plus

MODBUS/TCP

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