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ISC CISSP (Certified Information Systems Security Professional) exam is one of the most respected and sought-after certifications in the field of information security. Certified Information Systems Security Professional (CISSP) certification is globally recognized and validates the knowledge and experience of professionals in the field of information security. The CISSP Certification Exam is designed for professionals who have at least five years of experience in the field of security and its aspects.
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ISC Certified Information Systems Security Professional (CISSP) Sample Questions (Q237-Q242):
NEW QUESTION # 237
Security issues with shared push-button combination lock devices can BEST be overcome by which of the following?
Answer: D
NEW QUESTION # 238
From a security perspective, which of the following assumptions MUST be made about input to an application?
Answer: B
NEW QUESTION # 239
At what Orange Book evaluation levels are design specification and verification first required?
Answer: C
Explanation:
Level B1 is the first to require design specification and verification and this would also be a requirement for all higher levels.
The following answers are incorrect:
C1 and above. Is incorrect because design specification and verification is not a requirement until level B1. C1 is a lower level.
C2 and above. Is incorrect because design specification and verification is not a requirement until level B1. C2 is a lower level.
B2 and above. Is incorrect because design specification and verification is a requirement of level B1. B2 is a higher level so would not address level B1.
NEW QUESTION # 240
Which security modes is MOST commonly used in a commercial environment because it protects the integrity of financial and accounting data?
Answer: A
Explanation:
The security mode that is most commonly used in a commercial environment because it protects the integrity of financial and accounting data is Clark-Wilson. A security mode is a formal model or framework that defines the rules and principles for implementing and enforcing security policies and controls on a system or a network. A security mode can be based on various criteria or objectives, such as confidentiality, integrity, availability, or accountability. Clark-Wilson is a security mode that focuses on the integrity of data and transactions, and is designed to prevent unauthorized or improper modifications or tampering of data.
Clark-Wilson is based on the concept of separation of duties, which requires that different roles or functions are assigned to different parties, and that no single party can perform all the steps of a transaction or a process.
Clark-Wilson also involves the concept of well-formed transactions, which requires that all the transactions or operations on data are consistent, complete, and verifiable, and that they preserve the state and the validity of the data. Clark-Wilson can provide some benefits for security, such as enhancing the accuracy and reliability of the data and the transactions, preventing fraud or errors, and supporting the audit and compliance activities.
Clark-Wilson is most commonly used in a commercial environment because it protects the integrity of financial and accounting data, which are critical and sensitive for the business operations and performance of the organization. Clark-Wilson can help to ensure that the financial and accounting data are accurate, consistent, and valid, and that they reflect the true and fair view of the financial position and results of the organization. Clark-Wilson can also help to prevent or detect any unauthorized or improper modifications or tampering of the financial and accounting data, such as embezzlement, falsification, or manipulation, which may cause financial losses or legal liabilities for the organization. Biba, Graham-Denning, and Beil-LaPadula are not the security modes that are most commonly used in a commercial environment because they protect the integrity of financial and accounting data, although they may be related or useful security modes. Biba is a security mode that focuses on the integrity of data and transactions, and is designed to prevent unauthorized or improper modifications or tampering of data. Biba is based on the concept of no read down and no write up, which requires that a subject can only read data of lower or equal integrity level, and can only write data of higher or equal integrity level. Biba can provide some benefits for security, such as enhancing the accuracy and reliability of the data and the transactions, preventing corruption or contamination, and supporting the audit and compliance activities. However, Biba is not the security mode that is most commonly used in a commercial environment
NEW QUESTION # 241
One of the following assertions is NOT a characteristic of Internet Protocol Security (IPsec)
Answer: A
Explanation:
IPSec provide replay protection that ensures data is not delivered multiple times, however IPsec does not ensure that data is delivered in the exact order in which it is sent. IPSEC uses TCP and packets may be delivered out of order to the receiving side depending which route was taken by the packet.
Internet Protocol Security (IPsec) has emerged as the most commonly used network layer security control for protecting communications. IPsec is a framework of open standards for ensuring private communications over IP networks. Depending on how IPsec is implemented and configured, it can provide any combination of the following types of protection:
Confidentiality. IPsec can ensure that data cannot be read by unauthorized parties. This is accomplished by encrypting data using a cryptographic algorithm and a secret key a value known only to the two parties exchanging data. The data can only be decrypted by someone who has the secret key.
Integrity. IPsec can determine if data has been changed (intentionally or unintentionally) during transit. The integrity of data can be assured by generating a message authentication code (MAC) value, which is a cryptographic checksum of the data. If the data is altered and the MAC is recalculated, the old and new MACs will differ.
Peer Authentication. Each IPsec endpoint confirms the identity of the other IPsec endpoint with which it wishes to communicate, ensuring that the network traffic and data is being sent from the expected host.
Replay Protection. The same data is not delivered multiple times, and data is not delivered grossly out of order. However, IPsec does not ensure that data is delivered in the exact order in which it is sent.
Traffic Analysis Protection. A person monitoring network traffic does not know which parties are communicating, how often communications are occurring, or how much data is being exchanged. However, the number of packets being exchanged can be counted.
Access Control. IPsec endpoints can perform filtering to ensure that only authorized IPsec users can access particular network resources. IPsec endpoints can also allow or block certain types of network traffic, such as allowing Web server access but denying file sharing.
The following are incorrect answers because they are all features provided by IPSEC:
"Data cannot be read by unauthorized parties" is wrong because IPsec provides confidentiality through the usage of the Encapsulating Security Protocol (ESP), once encrypted the data cannot be read by unauthorized parties because they have access only to the ciphertext. This is accomplished by encrypting data using a cryptographic algorithm and a session key, a value known only to the two parties exchanging data. The data can only be decrypted by someone who has a copy of the session key.
"The identity of all IPsec endpoints are confirmed by other endpoints" is wrong because
IPsec provides peer authentication: Each IPsec endpoint confirms the identity of the other
IPsec endpoint with which it wishes to communicate, ensuring that the network traffic and data is being sent from the expected host.
"The number of packets being exchanged can be counted" is wrong because although
IPsec provides traffic protection where a person monitoring network traffic does not know which parties are communicating, how often communications are occurring, or how much data is being exchanged, the number of packets being exchanged still can be counted.
Reference(s) used for this question:
NIST 800-77 Guide to IPsec VPNs . Pages 2-3 to 2-4
NEW QUESTION # 242
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