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CISSP Security Architecture And Design

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. In both the Bell-LaPadula and Biba Models if the word "Simple is used ______________.






2. Subjects and Objects cannot change their security levels once they have been instantiated (created)






3. B1 is also called "Labeled Security" and each data object must have a classification label and each subject a clearance label. On each access attempt - the classification and clearance are checked to verify that the access is permissible.






4. What does the * (star) property mean in the Bell-LaPadula model?






5. The total combination of protection mechanisms within a computer system






6. There is only only one class in Division D. Reserved for systems that have been evaluated but fail to meet the criteria and requirements of the higher divisions.






7. According to the Orange Book - which security level is the first to require a system to protect against covert timing channels?






8. Permits a database to have two records that are identical except for Their classifications






9. Which Orange Book evaluation level is described as "Controlled Access Protection"? - This class requires a more granular method of providing access control. The system must enforce strict logon procedures and provide decision-making capabilites when






10. In Access Control terms it means to be higher than or equal to. In the Bell-Lapadula Model - this is refered to as the dominance relation - which is the relationship of the subject's clearance to the object's classification

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11. The Policy must be explicit and well defined and enforced by the mechanisms within the system






12. Users need to be Identified individually to provide more precise acces control and auditing functionality.






13. The reference monitor must mediate all access - _____________ - be verifiable as correct - and must always be invoked.






14. In which users are processing information at the same sensitivity level; thus - strict access control and auditing measures are not required. It would be a trusted envirnment with low security concerns.






15. Which can be used as a covert channel?






16. The hardware - firmware and software elements of a trusted computing base that implement the reference monitor concept.






17. A set of objects that a subject is able to access






18. All users have a clearance for and a formal need to know about - all data processed with the system.






19. Involves sharing the processor amoung all ready processes






20. If an operating system permits executable objects to be used sequentially by multiple users without a refresh of the objects - what security problem is most likely to exist?






21. Discretionary access control is based on individuals and/or groups. It requires a separation of users and information and identification and authentication of individual entities






22. When the address location that is specified in the program instruction contains the address of the final desired location.






23. Logical access control mechanisms are used to enforce authentication and the uniquenes of each individual's identification.






24. The Biba Model adresses _____________________.






25. Based on the Bell-LaPadula Security model - and evidence of reference monitor enforcement must be available.






26. Simpler instructions that require fewer clock cycles to execute.






27. What does the Clark-Wilson security model focus on






28. Which TCSEC level first addresses object reuse?






29. A is a form of EPROM - but its data storage can be erased and modified electrically by onboard programming circuitry and signals.






30. Bell-LaPadula - ______________: This rule is based on named subjects and objects. It specifies that specific permissions allow a subject to pass on permissions to pass on permissions at its own discretion. These permissions are stored in an access ma






31. TCSEC addresses Confidentiality - but _____________ . The TCSEC focuses mainly on one attribute of Security Confidentiality.






32. Used by Windows systems to reserve the "Swap Space"






33. As per FDA data should be ______________________________.






34. A form of ROM(Read-Only Memory) that can be modified after it has been manufactured. It can only be programmed only one time.






35. Buffer overflows occurs when a program or process tries to store more data in a _____________ than it was intended to hold.






36. What access control technique is also known as multilevel security?






37. An imaginary line that separates the trusted components of the TCB from those elements that are NOT trusted?






38. The security mechanisms and the system as a whole must perform predictably and acceptably in different situations continuously.






39. What prevents a process from accessing another process' data?






40. Succesfully Evaluated products are placed on?






41. n this class more granularity is provided in each protection mechanism - and the programming code that is not necessary to support the security policy is excluded.






42. Remaining parts of the operating system






43. I/O drivers and utilities






44. The type of environment that would require A1 systems is the most secure of secure environments. It deals with top-secret information and cannot adequately trust anyone using the systems without strict authentication - restrictions and auditing.






45. Mandatory access control is enfored by the use of security labels.






46. The Orange Book describes four hierarchical levels to categorize security systems. Which levels require mandatory protection?






47. Access control labels must be associated properly with objects.






48. The Biba model (introduced in 1977) - The Sutherland model (published in 1986) - The Brewer-Nash model (published in 1989)






49. Which would be designated as objects on a MAC system?






50. Accreditation is also defined as an ____________________ by a designated authority that an information system is approved to operate in a particular security configuration with a prescribed set of safeguards