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Free SSCP Exam Braindumps (page: 75)

Page 75 of 269
PDF with 1074 Questions

Related to information security, availability is the opposite of which of the following?

  1. delegation
  2. distribution
  3. documentation
  4. destruction

Answer(s): D

Explanation:

Availability is the opposite of "destruction."


Reference:

KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 59.



Related to information security, the prevention of the intentional or unintentional unauthorized disclosure of contents is which of the following?

  1. Confidentiality
  2. Integrity
  3. Availability
  4. capability

Answer(s): A

Explanation:

Confidentiality is the prevention of the intentional or unintentional unauthorized disclosure of contents.


Reference:

KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 60.



Related to information security, the guarantee that the message sent is the message received with the assurance that the message was not intentionally or unintentionally altered is an example of which of the following?

  1. integrity
  2. confidentiality
  3. availability
  4. identity

Answer(s): A

Explanation:

Integrity is the guarantee that the message sent is the message received, and that the message was not intentionally or unintentionally altered.


Reference:

KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 60.



One of the following assertions is NOT a characteristic of Internet Protocol Security (IPsec)

  1. Data cannot be read by unauthorized parties
  2. The identity of all IPsec endpoints are confirmed by other endpoints
  3. Data is delivered in the exact order in which it is sent
  4. The number of packets being exchanged can be counted.

Answer(s): C

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:

NIST 800-77 Guide to IPsec VPNs . Pages 2-3 to 2-4



Page 75 of 269



Post your Comments and Discuss ISC SSCP exam with other Community members:

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