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| Section | Weight | Objectives |
|---|---|---|
| Security and Risk Management | 14% | - Security Governance Principles - Compliance and Legal Requirements - Professional Ethics |
| Security Architecture and Engineering | 13% | - Secure Design Principles - Security Models and Frameworks |
| Communication and Network Security | 13% | - Network Architecture and Design - Secure Network Components |
| Asset Security | 10% | - Data Lifecycle Management - Information and Asset Classification |
| Identity and Access Management (IAM) | 13% | - Authentication and Authorization - Identity Lifecycle Management |
| Security Operations | 13% | - Incident Response - Disaster Recovery and Business Continuity |
| Security Assessment and Testing | 12% | - Security Testing Methods - Audit Processes |
| Software Development Security | 11% | - Application Security Controls - Secure Software Development Lifecycle (SDLC) |
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NEW QUESTION # 83
Which security model uses division of operations into different parts and requires different users to perform each part?
Answer: A
Explanation:
The Clark-Wilson model uses separation of duties, which divides an operation into different parts and requires different users to perform each part. This prevents authorized users from making unauthorized modifications to data, thereby protecting its integrity.
The Clark-Wilson integrity model provides a foundation for specifying and analyzing an integrity policy for a computing system.
The model is primarily concerned with formalizing the notion of information integrity.
Information integrity is maintained by preventing corruption of data items in a system due to either error or malicious intent. An integrity policy describes how the data items in the system should be kept valid from one state of the system to the next and specifies the capabilities of various principals in the system. The model defines enforcement rules and certification rules.
The model's enforcement and certification rules define data items and processes that provide the basis for an integrity policy. The core of the model is based on the notion of a transaction.
A well-formed transaction is a series of operations that transition a system from one consistent state to another consistent state.
In this model the integrity policy addresses the integrity of the transactions.
The principle of separation of duty requires that the certifier of a transaction and the implementer be different entities.
The model contains a number of basic constructs that represent both data items and processes that operate on those data items. The key data type in the Clark-Wilson model is a Constrained Data Item (CDI). An Integrity Verification Procedure (IVP) ensures that all
CDIs in the system are valid at a certain state. Transactions that enforce the integrity policy are represented by Transformation Procedures (TPs). A TP takes as input a CDI or
Unconstrained Data Item (UDI) and produces a CDI. A TP must transition the system from one valid state to another valid state. UDIs represent system input (such as that provided by a user or adversary). A TP must guarantee (via certification) that it transforms all possible values of a UDI to a "safe" CDI.
In general, preservation of data integrity has three goals:
Prevent data modification by unauthorized parties
Prevent unauthorized data modification by authorized parties
Maintain internal and external consistency (i.e. data reflects the real world)
Clark-Wilson addresses all three rules but BIBA addresses only the first rule of intergrity.
References:
HARRIS, Shon, All-In-One CISSP Certification Fifth Edition, McGraw-Hill/Osborne, Chapter
5: Security Architecture and Design (Page 341-344).
and
http://en.wikipedia.org/wiki/Clark-Wilson_model
NEW QUESTION # 84
Which one of the following is a common risk with network configuration management?
Answer: B
NEW QUESTION # 85
In software development, which of the following entities normally signs the code to protect the code integrity?
Answer: A
Explanation:
Code signing is the process of applying a digital signature to a piece of code to verify its authenticity and integrity. Code signing helps protect the code from unauthorized modification, tampering, or corruption. Code signing also helps users and systems to identify the source and trustworthiness of the code. In software development, the entity that normally signs the code is the developer who created or modified the code. The developer uses a private key to sign the code and a public key certificate to associate the signature with the developer's identity. The developer's signature can then be verified by anyone who has the corresponding public key or a trusted certificate authority (CA). References: Official (ISC)2 CISSP CBK Reference, Chapter
8: Software Development Security, Section: Code Signing, pp. 1067-1068.
NEW QUESTION # 86
Which of the following modes of DES is MOST Likely used for Database Encryption A. Electronic Code Book(ECB)
B. Cipher Block Chaining(CBC)
C. Cipher Feedback(CFB)
D. Output Feedback(OFB)
Answer:
Explanation:
A
Explanation:
Because ECB mode works with blocks of data independently, data within a file does not have to be encrypted in a certain order. This is very helpful when using encryption in databases. A database has different pieces of data accessed in a random fashion.
If it is encrypted in ECB mode, then any record or table can be added, encrypted, deleted, or decrypted independently of any other table or record.
Other DES modes are dependent upon the text encrypted before them. This dependency makes it harder to encrypt and decrypt smaller amounts of text, because the previous encrypted text would need to be decrypted first.
Because ECB mode does not use chaining, you should not use it to encrypt large amounts of data, because patterns would eventually show themselves.
Some important characteristics of ECB mode encryption are as follows:
Operations can be run in parallel, which decreases processing time.
Errors are contained. If an error takes place during the encryption process, it only affects one block of data.
Only usable for the encryption of short messages.
Cannot carry out preprocessing functions before receiving plaintext.
The following answers are incorrect:
Cipher Block Chaining(CBC) Cipher Feedback(CFB) Output Feedback(OFB)
The following reference(s) were/was used to create this question:
Harris, Shon (2012-10-18). CISSP All-in-One Exam Guide, 6th Edition (p. 803). McGraw-Hill . Kindle Edition.
NEW QUESTION # 87
When selecting a disk encryption technology, which of the following MUST also be assured to be encrypted?
Answer: B
Explanation:
A hibernation file is a file that stores the contents of the system memory when a computer is put into hibernation mode. The hibernation file allows the computer to resume its previous state when it is powered on again. However, if the hibernation file is not encrypted, an attacker could access the file and extract sensitive information from the memory dump, such as passwords, encryption keys, or personal data. Therefore, when selecting a disk encryption technology, it is essential to ensure that the hibernation file is also encrypted along with the rest of the disk. The Master Boot Record (MBR), the pre-boot environment, and the Basic Input Output System (BIOS) are not stored on the disk and are not affected by disk encryption.
NEW QUESTION # 88
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