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ISC CISSP (Certified Information Systems Security Professional) Certification Exam is a globally recognized certification program designed for professionals seeking to specialize in information security. Certified Information Systems Security Professional (CISSP) certification exam is administered by the International Information System Security Certification Consortium (ISC)², a non-profit organization dedicated to advancing the cybersecurity industry through education and certification.
ISC Certified Information Systems Security Professional (CISSP) Sample Questions (Q621-Q626):
NEW QUESTION # 621
The RSA Algorithm uses which mathematical concept as the basis of its encryption?
Answer: D
Explanation:
Explanation/Reference:
Explanation:
RSA is derived from the last names of its inventors, Rivest, Shamir, and Addleman.
This algorithm is based on the difficulty of factoring a number, N, which is the product of two large prime numbers. These numbers may be 200 digits each. Thus, the difficulty in obtaining the private key from the public key is a hard, one-way function that is equivalent to the difficulty of finding the prime factors of N.
In RSA, public and private keys are generated as follows:
Choose two large prime numbers, p and q, of equal length, compute p3q 5 n, which is the public
modulus.
Choose a random public key, e, so that e and (p - 1)(q - 1) are relatively prime.
Compute e x d = 1 mod (p - 1)(q - 1), where d is the private key.
Thus, d = e-1 mod [(p - 1)(q - 1)]
From these calculations, (d, n) is the private key and (e, n) is the public key.
Incorrect Answers:
A: The RSA Algorithm does not use Geometry as the basis of its encryption.
B: The RSA Algorithm does not use 16-round ciphers as the basis of its encryption.
C: The RSA Algorithm does not use PI as the basis of its encryption.
References:
Krutz, Ronald L. and Russel Dean Vines, The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, New York, 2001, p. 148
NEW QUESTION # 622
Which of the following is TRUE about Disaster Recovery Plan (DRP) testing?
Answer: D
NEW QUESTION # 623
The ISO/IEC 27001:2005 is a standard for:
Answer: D
Explanation:
The ISO 27000 Directory at: http://www.27000.org/index.htm has great coverage of the ISO 27000 series. The text below was extracted from their website.
As mention by Belinda the ISO 27001 standard is the certification controls criteria while
ISO 27002 is the actual standard. ISO 27002 used to be called ISO 17799 before being renamed.
An Introduction To ISO 27001 (ISO27001)
The ISO 27001 standard was published in October 2005, essentially replacing the old
BS7799-2 standard. It is the specification for an ISMS, an Information Security
Management System. BS7799 itself was a long standing standard, first published in the nineties as a code of practice. As this matured, a second part emerged to cover management systems. It is this against which certification is granted. Today in excess of a thousand certificates are in place, across the world.
ISO 27001 enhanced the content of BS7799-2 and harmonized it with other standards. A scheme has been introduced by various certification bodies for conversion from BS7799 certification to ISO27001 certification.
The objective of the standard itself is to "provide a model for establishing, implementing, operating, monitoring, reviewing, maintaining, and improving an Information Security
Management System". Regarding its adoption, this should be a strategic decision. Further,
"The design and implementation of an organization's ISMS is influenced by their needs and objectives, security requirements, the process employed and the size and structure of the organization".
The standard defines its 'process approach' as "The application of a system of processes within an organization, together with the identification and interactions of these processes, and their management". It employs the PDCA, Plan-Do-Check-Act model to structure the processes, and reflects the principles set out in the OECG guidelines (see oecd.org).
THE CONTENTS OF ISO 27001
The content sections of the standard are:
Management Responsibility
Internal Audits
ISMS Improvement
Annex A - Control objectives and controls
Annex B - OECD principles and this international standard
Annex C - Correspondence between ISO 9001, ISO 14001 and this standard
Introduction To ISO 27002 (ISO27002)
The ISO 27002 standard is the rename of the ISO 17799 standard, and is a code of practice for information security. It basically outlines hundreds of potential controls and control mechanisms, which may be implemented, in theory, subject to the guidance provided within ISO 27001.
The standard "established guidelines and general principles for initiating, implementing, maintaining, and improving information security management within an organization". The actual controls listed in the standard are intended to address the specific requirements identified via a formal risk assessment. The standard is also intended to provide a guide for the development of "organizational security standards and effective security management practices and to help build confidence in inter-organizational activities".
The basis of the standard was originally a document published by the UK government, which became a standard 'proper' in 1995, when it was re-published by BSI as BS7799. In
2000 it was again re-published, this time by ISO ,as ISO 17799. A new version of this appeared in 2005, along with a new publication, ISO 27001. These two documents are intended to be used together, with one complimenting the other.
ISO's future plans for this standard are focused largely around the development and publication of industry specific versions (for example: health sector, manufacturing, and so on). Note that this is a lengthy process, so the new standards will take some time to appear
THE CONTENTS OF ISO 17799 / 27002
The content sections are:
Structure
Risk Assessment and Treatment
Security Policy
Organization of Information Security
Asset Management
Human Resources Security
Physical Security
Communications and Ops Management
Access Control
Information Systems Acquisition, Development, Maintenance
Information Security Incident management
Business Continuity
Compliance
http://www.iso.org/iso/catalogue_detail?csnumber=42103
and
The ISO 27000 Directory at http://www.27000.org/index.htm
NEW QUESTION # 624
Which of the following is true about Kerberos?
Answer: D
Explanation:
"Kerberos relies upon symmetric key cryptography, specifically Data Encryption Standard (DES), and provides end-to-end security for authentication traffic between the client and the Key Distribution Center (KDC)." Pg. 15 Tittel: CISSP Study Guide
NEW QUESTION # 625
Which of the following is the MOST appropriate action when reusing media that contains sensitive data?
Answer: A
Explanation:
The most appropriate action when reusing media that contains sensitive data is to sanitize the media.
Sanitization is the process of removing or destroying all data from the media in such a way that it cannot be recovered by any means. Sanitization can be achieved by various methods, such as overwriting, degaussing, or physical destruction. Sanitization ensures that the sensitive data is not exposed or compromised when the media is reused or disposed of. Erase, encrypt, and degauss are not the most appropriate actions when reusing media that contains sensitive data, although they may be related or useful steps. Erase is the process of deleting data from the media by using the operating system or application commands or functions. Erase does not guarantee that the data is completely removed from the media, as it may leave traces or remnants that can be recovered by using special tools or techniques. Encrypt is the process of transforming data into an unreadable form by using a cryptographic algorithm and a key. Encrypt can protect the data from unauthorized access or disclosure, but it does not remove the data from the media. Encrypt also requires that the key is securely managed and stored, and that the encryption algorithm is strong and reliable. Degauss is the process of applying a strong magnetic field to the media to erase or scramble the data. Degauss can effectively sanitize magnetic media, such as hard disks or tapes, but it does not work on optical media, such as CDs or DVDs.
Degauss also renders the media unusable, as it destroys the servo tracks and the firmware that are needed for the media to function properly.
NEW QUESTION # 626
......
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