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Real ISA ISA-IEC-62443 Exam Dumps - ISA-IEC-62443 Reliable Exam Camp

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q134-Q139):

NEW QUESTION # 134
Which is a role of the application layer?
Available Choices (select all choices that are correct)

A. Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC
B. Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC
C. Delivers and formats information, possibly with encryption and security
D. Provides the mechanism for opening, closing, and managing a session between end-user application
processes

Answer: A

NEW QUESTION # 135
What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)

A. Uses different keys
B. Uses a continuous stream
C. Shares the same key OD.
D. Has lower network overhead

Answer: A

Explanation:
An asymmetric key is a feature of asymmetric cryptography, also known as public-key cryptography, which is a method of encrypting and decrypting data using two different keys: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret by the owner. The public key and the private key aremathematically related, but it is computationally infeasible to derive one from the other.
Asymmetric cryptography can be used for various purposes, such as digital signatures, key exchange, and encryption. For example, if Alice wants to send a message to Bob, she can use Bob's public key to encrypt the message, and only Bob can decrypt it using his private key. Alternatively, if Bob wants to prove that he is the author of a message, he can use his private key to sign the message, and anyone can verify it using his public key. Asymmetric cryptography has some advantages over symmetric cryptography, which uses the same key for both encryption and decryption. For instance, asymmetric cryptography does not require a secure channel to distribute the keys, and it can provide non-repudiation and authentication. However, asymmetric cryptography also has some drawbacks, such as higher computational complexity, larger key sizes, and higher network overhead.
References:
* ISA/IEC 62443-3-3:2018, Section 4.2.3.6.1, Cryptography1
* ISA/IEC 62443-4-2:2019, Section 4.2.3.6.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.1,
* Cryptography

NEW QUESTION # 136
Which communications system covers a large geographic area?
Available Choices (select all choices that are correct)

A. Campus Area Network (CAN)
B. Wide Area Network (WAN)
C. Local Area Network (LAN)
D. Storage Area Network

Answer: B

Explanation:
A Wide Area Network (WAN) is a communications system that covers a large geographic area, such as a city, a country, or even several countries or continents1. WANs are often used to connect local area networks (LANs) and other types of networks together, so that users and computers in one location can communicate with users and computers in other locations2. WANs use various communication infrastructures, such as public telephone lines, undersea cables, and communication satellites, to transmit data over long distances1. WANs are typically established with leased telecommunication circuits or less costly circuit switching or packet switching methods2. WANs are often built by Internet service providers, who provide connections from an organization's LAN to the Internet2. The Internet itself may be considered a WAN2. References: Hardware and network technologies - CCEA LAN and WAN - BBC, Wide area network
- Wikipedia.

NEW QUESTION # 137
At Layer 4 of the Open Systems Interconnection (OSI) model, what identifies the application that will handle a
packet inside a host?
Available Choices (select all choices that are correct)

A. ATCP/UDP application ID
B. ATCP/UDP registry number
C. A TCP/UDP host ID
D. ATCP/UDP port number

Answer: D

NEW QUESTION # 138
Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)

A. API 1164
B. ISA-62443 (EC 62443)
C. NIST SP800-82
D. D. ISO 27001

Answer: A

Explanation:
API 1164 is an industry sector-specific standard that provides guidance on the cybersecurity of pipeline supervisory control and data acquisition (SCADA) systems. API stands for American Petroleum Institute, which is the largest U.S. trade association for the oil and natural gas industry. API 1164 was first published in
2004 and revised in 2009 and 2021. The latest version of the standard aligns with the ISA/IEC 62443 series of standards and incorporates the concepts of security levels, zones, and conduits. API 1164 covers the security lifecycle of pipeline SCADA systems, from risk assessment and policy development to implementation and maintenance. The standard also defines roles and responsibilities, security requirements, security controls, and security assessment methods for pipeline SCADA systems.
References:
* API 1164: Pipeline SCADA Security, Fourth Edition, September 2021
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 2.2.2, Industry Sector-Specific Standards
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 2.2.2, Industry Sector-Specific Standards

NEW QUESTION # 139
......

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