Fill in the blank with an appropriate phrase The is a formal state transition system of computer security policy that describes a set of access control rules designed to ensure data integrity.
The Biba model is a formal state transition system of computer security policy that describes a set of access control rules
designed to ensure data integrity. Data and subjects are grouped into ordered levels of integrity. The model is designed so that subjects may
not corrupt data in a level ranked higher than the subject, or be corrupted by data from a lower level than the subject.
Copyright holders, content providers, and manufacturers use digital rights management (DRM) in order to limit usage of digital media and devices. Which of the following security challenges does DRM include? Each correct answer represents a complete solution. Choose all that apply.
The security challenges for DRM are as follows:
Key hiding: It prevents tampering attacks that target the secret keys. In the key hiding process, secret keys are used for
authentication, encryption, and node-locking.
Device fingerprinting: It prevents fraud and provides secure authentication. Device fingerprinting includes the summary of hardware
and software characteristics in order to uniquely identify a device.
OTA provisioning: It provides end-to-end encryption or other secure ways for delivery of copyrighted software to mobile devices.
Answer B is incorrect. Access control is not a security challenge for DRM.
Which of the following are the responsibilities of a custodian with regard to data in an information classification program? Each correct answer represents a complete solution. Choose three.
The owner of information delegates the responsibility of protecting that information to a custodian. The following are the responsibilities of a
custodian with regard to data in an information classification program:
Running regular backups and routinely testing the validity of the backup data
Performing data restoration from the backups when necessary
Controlling access, adding and removing privileges for individual users
Answer C is incorrect. Determining what level of classification the information requires is the responsibility of the owner.
Copyright holders, content providers, and manufacturers use digital rights management (DRM) in order to limit usage of digital media and devices. Which of the following security challenges does DRM include? Each correct answer represents a complete solution. Choose all that apply.
The security challenges for DRM are as follows:
Key hiding: It prevents tampering attacks that target the secret keys. In the key hiding process, secret keys are used for
authentication, encryption, and node-locking.
Device fingerprinting: It prevents fraud and provides secure authentication. Device fingerprinting includes the summary of hardware
and software characteristics in order to uniquely identify a device.
OTA provisioning: It provides end-to-end encryption or other secure ways for delivery of copyrighted software to mobile devices.
Answer B is incorrect. Access control is not a security challenge for DRM.
Which of the following components of configuration management involves periodic checks to determine the consistency and completeness of accounting information and to verify that all configuration management policies are being followed?
Configuration auditing is a component of configuration management, which involves periodic checks to establish the consistency and
completeness of accounting information and to confirm that all configuration management policies are being followed. Configuration audits are
broken into functional and physical configuration audits. They occur either at delivery or at the moment of effecting the change. A functional
configuration audit ensures that functional and performance attributes of a configuration item are achieved, while a physical configuration
audit ensures that a configuration item is installed in accordance with the requirements of its detailed design documentation.
Answer D is incorrect. The configuration status accounting procedure is the ability to record and report on the configuration baselines
associated with each configuration item at any moment of time. It supports the functional and physical attributes of software at various points
in time, and performs systematic control of accounting to the identified attributes for the purpose of maintaining software integrity and
traceability throughout the software development life cycle.
Answer C is incorrect. Configuration control is a procedure of the Configuration management. Configuration control is a set of
processes and approval stages required to change a configuration item's attributes and to re-baseline them. It supports the change of the
functional and physical attributes of software at various points in time, and performs systematic control of changes to the identified attributes.
Answer A is incorrect. Configuration identification is the process of identifying the attributes that define every aspect of a configuration
item. A configuration item is a product (hardware and/or software) that has an end-user purpose. These attributes are recorded in
configuration documentation and baselined. Baselining an attribute forces formal configuration change control processes to be effected in the
event that these attributes are changed.
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