CompTIA Security Plus Mock Test Q851

Which of the following is a control that allows a mobile application to access and manipulate information which should only be available by another application on the same mobile device (e.g. a music application posting the name of the current song playing on the device on a social media site)?

A. Co-hosted application
B. Transitive trust
C. Mutually exclusive access
D. Dual authentication


Correct Answer: B
Section: Application, Data and Host Security

Explanation:
Transitive trust is a form of trust that flows from one entity to another so that if A trusts B and B trusts C, A automatically trusts C.

Incorrect Answers:
A: Co-hosted application refers to installing the application on remote networks and accessing it from the device. However, in this scenario, the application is running on the mobile
device.
C: Mutually exclusive access would not allow concurrent access. In other words, if one application has access, the other application cannot have access.
D: Dual authentication or two-factor authentication provides identification of users by means of the combination of two different components. These components may be something
that the user knows, something that the user possesses or something that is inseparable from the user.

References:
https://technet.microsoft.com/en-us/library/cc739693%28v=ws.10%29.aspx
https://en.wikipedia.org/wiki/Application_service_provider
https://en.wikipedia.org/wiki/Two-factor_authentication
http://www.thefreedictionary.com/mutually+exclusive