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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security and Risk Management | 16% | - Governance, risk management, and compliance - Legal, regulatory, and ethical issues - Professional ethics - Security principles, concepts, and structures |
| Topic 2: Asset Security | 10% | - Data security controls - Asset retention and disposal - Protecting privacy - Asset classification and ownership |
| Topic 3: Identity and Access Management (IAM) | 13% | - Identity and access provisioning - Identity management concepts - Access control mechanisms - Access control attacks and mitigation |
| Topic 4: Software Development Security | 10% | - Security in software development lifecycle - Secure coding practices - Security controls in development - Software security testing |
| Topic 5: Security Operations | 13% | - Security operations concepts - Incident management and response - Business continuity and disaster recovery - Security administration - Physical security |
| Topic 6: Security Assessment and Testing | 12% | - Assessment and testing strategies - Security control testing - Vulnerability assessment and remediation - Security audit and review |
| Topic 7: Security Architecture and Engineering | 13% | - Security design principles - Cryptography - Site and facility security - Security models and frameworks - Security capabilities of information systems |
| Topic 8: Communication and Network Security | 13% | - Network attacks and countermeasures - Network architecture and design - Network security controls - Secure communication channels |
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NEW QUESTION # 236
Including a Trusted Platform Module (TPM) in the design of a computer system is an example of a technique to what?
Answer: B
NEW QUESTION # 237
What uses a key of the same length as the message where each bit or character from the plaintext is encrypted by a modular addition?
Answer: B
Explanation:
In cryptography, the one-time pad (OTP) is a type of encryption that is impossible to crack if used correctly. Each bit or character from the plaintext is encrypted by a modular addition with a bit or character from a secret random key (or pad) of the same length as the plaintext, resulting in a ciphertext. If the key is truly random, at least as long as the plaintext, never reused in whole or part, and kept secret, the ciphertext will be impossible to decrypt or break without knowing the key. It has also been proven that any cipher with the perfect secrecy property must use keys with effectively the same requirements as OTP keys. However, practical problems have prevented one-time pads from being widely used.
First described by Frank Miller in 1882, the one-time pad was re-invented in 1917 and patented a couple of years later. It is derived from the Vernam cipher, named after Gilbert
Vernam, one of its inventors. Vernam's system was a cipher that combined a message with a key read from a punched tape. In its original form, Vernam's system was vulnerable because the key tape was a loop, which was reused whenever the loop made a full cycle.
One-time use came a little later when Joseph Mauborgne recognized that if the key tape were totally random, cryptanalysis would be impossible.
The "pad" part of the name comes from early implementations where the key material was distributed as a pad of paper, so the top sheet could be easily torn off and destroyed after use. For easy concealment, the pad was sometimes reduced to such a small size that a powerful magnifying glass was required to use it. Photos show captured KGB pads that fit in the palm of one's hand, or in a walnut shell. To increase security, one-time pads were sometimes printed onto sheets of highly flammable nitrocellulose so they could be quickly burned.
The following are incorrect answers:
A running key cipher uses articles in the physical world rather than an electronic algorithm.
In classical cryptography, the running key cipher is a type of polyalphabetic substitution cipher in which a text, typically from a book, is used to provide a very long keystream.
Usually, the book to be used would be agreed ahead of time, while the passage to use would be chosen randomly for each message and secretly indicated somewhere in the message.
The Running Key cipher has the same internal workings as the Vigenere cipher. The difference lies in how the key is chosen; the Vigenere cipher uses a short key that repeats, whereas the running key cipher uses a long key such as an excerpt from a book. This means the key does not repeat, making cryptanalysis more difficult. The cipher can still be broken though, as there are statistical patterns in both the key and the plaintext which can be exploited.
Steganography is a method where the very existence of the message is concealed. It is the art and science of encoding hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message. it is sometimes referred to as Hiding in Plain Sight.
Cipher block chaining is a DES operating mode. IBM invented the cipher-block chaining
(CBC) mode of operation in 1976. In CBC mode, each block of plaintext is XORed with the previous ciphertext block before being encrypted. This way, each ciphertext block depends on all plaintext blocks processed up to that point. To make each message unique, an initialization vector must be used in the first block.
Reference(s) used for this question:
HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, chapter 8: Cryptography (page 555).
and
http://en.wikipedia.org/wiki/One-time_pad
http://en.wikipedia.org/wiki/Running_key_cipher
http://en.wikipedia.org/wiki/Cipher_block_chaining#Cipher-block_chaining_.28CBC.29
NEW QUESTION # 238
A software security engineer is developing a black box-based test plan that will measure the system's reaction to incorrect or illegal inputs or unexpected operational errors and situations. Match the functional testing techniques on the left with the correct input parameters on the right.
Answer:
Explanation:
Explanation
NEW QUESTION # 239
Which type of security control is also known as "Logical" control?
Answer: C
Explanation:
Explanation/Reference:
Explanation:
Technical controls, which are also known as logical controls, are software or hardware components such as firewalls, IDS, encryption, identification and authentication mechanisms.
Incorrect Answers:
A: Physical controls are not known as logical controls, they are objects put into place to protect facility, personnel, and resources.
C: Administrative controls are usually referred to as soft controls, not logical controls.
D: Risk is not a valid security control type.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 28
NEW QUESTION # 240
Which of the following is often implemented by a one-for-one disk to disk ratio?
Answer: A
Explanation:
Explanation/Reference:
Explanation:
RAID Level 1 is commonly called mirroring. It mirrors the data from one disk or set of disks by duplicating the data onto another disk or set of disks. This is often implemented by a one-for-one disk to disk ratio:
Each drive is mirrored to an equal drive partner that is continually being updated with current data. If one drive fails, the system automatically gets the data from the other drive. The main issue with this level of RAID is that the one-for-one ratio is very expensive - resulting in the highest cost per megabyte of data capacity. This level effectively doubles the amount of hard drives you need, therefore it is usually best for smaller capacity systems.
Incorrect Answers:
B: RAID level 0 is not implemented by a one-for-one disk to disk ratio.
C: RAID level 2 is not implemented by a one-for-one disk to disk ratio.
D: RAID level 5 is not implemented by a one-for-one disk to disk ratio.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP Prep Guide: Mastering the CISSP and ISSEP Exams, 2nd Edition, Wiley Publishing, Indianapolis, 2004, p. 144
NEW QUESTION # 241
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