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CISSP Security Architecture And Design
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Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
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. 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?
Security Policy is clearly defined and documented
A Base Register (Memory Management)
Labels - Orange Book
Disclosure of residual data
2. In the Bell-LaPadula Model the Object's Label contains ___________________.
Its classification label (Top Secret - Secret or confidential)
An abstract machine
Sensitivity labels
Most commonly used approach
3. The Policy must be explicit and well defined and enforced by the mechanisms within the system
An abstract machine
No read down
Security Policy - Orange Book
Indirect addressing
4. Individual subjects must be uniquely identified.
Identification - Orange Book
Storage and timing
Clark-Wilson
Electrically Erasable and Programmable Read-Only Memory (EEPROM)
5. A set of objects that a subject is able to access
Simple Integrity Axiom
Its Clearance Label (Top Secret - Secret - or Confidential)
Secondary Storage
A Domain
6. Based on The Bell-LaPadula model - because it allows for multilevel security to be integrated into the code.
Primary storage
All Mandatory Access Control (MAC) systems
Evaluated separately
B2 rating
7. For a subject to have read access to an object in a Multi-Level Security Policy - it is necessary that the subject's sensitivity label must ____________________.
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8. Security Policies that prevent information from flowing from a higher security level to a lower security level are called ____________.
Indexed addressing
Multilevel Security Policies
C2 - Controlled Access Protection
Swap Space
9. This type of environment is highly secured environment that processes very sensitive information. It requires systems that are highly resistant to penetration.
Security Policy is clearly defined and documented
Orange Book - B2
Accreditation
B3 - Rating
10. A form of ROM(Read-Only Memory) that can be modified after it has been manufactured. It can only be programmed only one time.
Its Clearance Label (Top Secret - Secret - or Confidential)
Programmable Read-Only Memory (PROM)
The TCSEC - Aka Orange Book
Fail safe
11. The Biba Model is not concerned with security levels and confidentiality. It uses _________________.
Execution Domain
Trusted Network Interpretation (TNI)
The Rule is talking about writing
A lattice of Intergrity Levels
12. The centerpiece of the DoD Rainbow Series publications.Developed by the National Computer Security Center (NCSC)?
B1 - Labeled Security
D
The TCSEC - Aka Orange Book
Division D - Minimal Protection
13. According to the Orange Book - which security level is the first to require a system to protect against covert timing channels?
Accreditation
Mandatory Access Control (MAC)
B3
*-Integrity Axiom
14. The Red Book aka Trusted Network Interpretation (TNI) - provides _________________ for Trusted computer and communications network systems under the areas of assurance requirements
An abstract machine
Orange Book interpretations
Networks and Communications
Identification - Orange Book
15. Developed after the Bell-LaPadula model. Its a state machine model and is very similar to the Bell-LaPadula Model.
Process isolation
The Security Kernel
The Biba Model
Thrashing
16. A nonvolatile storage media etc computer hard drive - floppy disks and CD-ROMs
Orange Book - B1
Secondary Storage
C1 - Discrection Security Protection is a type of environment
Ring 3
17. Users are trusted but a certain level of accountability is required. C2 over is seen as the most reasonable class for commmercial applications - but the level of protection is still relatively weak.
Covert channels
A Base Register (Memory Management)
Mandatory access control
In C2 - Controlled Access Protection environment
18. When a computer uses more than one CPU in parallel to execute instructions is known as?
The Simple Security Property
Orange Book B
Physical security
Multiprocessing
19. In an automated system ________________ could be achieved by: A computer system designed to identify individuals responsible for any input.
*-Integrity Axiom
Orange Book A
D
attributability
20. TCSEC provides a means to evaluate ______________________.
System High Security Mode
Access control to the objects by the subjects
Fail safe
The trustworthiness of an information system
21. A system uses the Reference Monitor to ___________________ of a subject and an object?
Totality of protection mechanisms
Compare the security labels
Multiprocessing
Buffer overflows
22. Access control labels must be associated properly with objects.
Process isolation
Administrative declaration
Labels - Orange Book
Subject to Object Model
23. The hardware - firmware and software elements of a trusted computing base that implement the reference monitor concept.
The security kernel
Mandatory Access Control (MAC)
D
Types of covert channels
24. The Biba model (introduced in 1977) - The Sutherland model (published in 1986) - The Brewer-Nash model (published in 1989)
The Clark Wilson integrity model
Models concerned with integrity
B3 - Security Domains
Complex Instruction Set Computers (CISC)
25. If a system initializes in a secure state and all allowed state transitions are secure - the every subsequent state will be secure no matter what inputs occur.
Basic Security Theorem (used in computer science) definition
Clark-Wilson
State machine model
'Dominate'
26. Ssoftware that is stored within ROM (Read-Only Memory) - (ROM is nonvolatile)
Firmware
Overt channel
The "No write Down" Rule
C2
27. What does the Clark-Wilson security model focus on
Protection Rings Support
Integrity
An abstract machine
Trusted Distribution
28. What is defined as the hardware - firmware and software elements of a trusted computing base that implement the reference monitor concept?
Orange Book - B1
A security kernel
Access control to the objects by the subjects
System High Security Mode
29. The Security Model Incorporates the ____________ that should be enforced in the system.
Security Policy
Logical addresses
The Simple Security Property
Absolute addresses
30. 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.
Division D - Minimal Protection
Evaluated separately
Logical addresses
Execution Domain
31. What does the simple security (ss) property mean in the Bell-LaPadula model?
Accountability - Orange Book
Overt channel
Simple Integrity Axiom
No read up
32. This class ("Structured Protection") requires more stringent authentication mechanisms and well-defined interfaces between layers. Subjects and devices require labels and the system must not allow covert channels.
The security kernel
Invocation Property
Orange Book - B2
Trusted Network Interpretation (TNI)
33. Simpler instructions that require fewer clock cycles to execute.
Complex Instruction Set Computers (CISC)
Simple Integrity Axiom
Reduced Instruction Set Computers (RISC)
Government and military applications
34. In B1 the security policy is based on Informal statement and the design specifications are reviewed and verified where as in B2 the ___________________ - and the system design and implementation are subject to more thorough review and testing procedu
C2
C2 - Controlled Access Protection
Higher or equal to access class
Security Policy is clearly defined and documented
35. 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
A lattice of Intergrity Levels
Orange Book C
Real storage
C1 - Discretionary Security Protection
36. The total combination of protection mechanisms within a computer system
'Dominate'
B3 - Security Domains
TCB (Trusted Computing Base)
Erasable and Programmable Read-Only Memory (EPROM)
37. What model use an access control triples and requires that the system maintain separation of duty ?
B3 - Rating
Logical addresses
Buffer (temporary data storage area)
Clark-Wilson
38. Which is a straightforward approach that provides access rights to subjects for objects?
Access Matrix model
Dedicated Security Mode
A Domain
Division B - Mandatory Protection
39. Verification Protection
A Limit Register (Memory Management)
Orange Book - A1
The Tranqulity principle (The Bell-LaPadula Model)
Orange Book A
40. Based on a known address with an offset value applied.
B2 - Structured Protection
Relative Addresses
Ring 1
Subject to Object Model
41. Ensuring thta information does not flow from a higher security lever to a lower level in the Bell-LaPadula Model is referred to as ___________________ - which would take place through a "write down" operation. (An actual compromise occurs if and when
Controlling unauthorized downgrading of information
Orange Book - A1
The Rule is talking about writing
Trusted Network Interpretation (TNI)
42. The reference monitor is an access control concept - Referring to ________________ that mediates all accesses to objects by subjects based on information in an access control database.
'Dominate'
An abstract machine
Access control to the objects by the subjects
B2 rating
43. Which computer design approaches is based on the fact that in earlier technologies - the instruction fetch was the longest part of the cycle
Its classification label (Top Secret - Secret or confidential)
Attributable - original - accurate - contemporaneous and legible
B1 - Labeled Security
Complex Instruction Set Computers (CISC)
44. An abstract machine which must mediate all access to subjects to objects - be protected from modification - be verifiable as correct - and is always invoked
Higher or equal to access class
The reference monitor
Polyinstantiation
The Trusted Computing Base (TCB)
45. Which describe a condition when RAM and Secondary storage are used together?
B2 rating
Virtual storage
Primary storage
Direct Addressing
46. Mandatory Protection
Thrashing
Logical addresses
Orange Book B
Relative Addresses
47. A type of memory used for High-speed writing and reading activities.
Accountability - Orange Book
Cache Memory
Identification - Orange Book
Direct addressing
48. The Orange Book describes four hierarchical levels to categorize security systems. Which levels require mandatory protection?
Access Matrix model
Prohibits
A and B
The rule is talking about "Reading"
49. The *-Property rule is refered to as ____________.
Direct Addressing
The "No write Down" Rule
Logical addresses
The security perimeter
50. Execute one instruction at a time.
Firmware
The Simple Security Property
Simple Security Rule
Scalar processors
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