The probability distribution of the rate of return on a stock is given below:
What is the standard deviation of return?
A. 7.9
B. 5.46
C. 5.69
D. 9.4
Answer: C
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NEW QUESTION: 1
The probability distribution of the rate of return on a stock is given below:
What is the standard deviation of return?
A. 7.9
B. 5.46
C. 5.69
D. 9.4
Answer: C
NEW QUESTION: 2
The Orange Book states that "Hardware and software features shall be provided that can be used to periodically validate the correct operation of the on-site hardware and firmware elements of the TCB [Trusted Computing Base]." This statement is the formal requirement for:
A. System Architecture Specification.
B. Security Testing.
C. Design Verification.
D. System Integrity.
Answer: D
Explanation:
This is a requirement starting as low as C1 within the TCSEC rating.
The Orange book requires the following for System Integrity Hardware and/or software features shall be provided that can be used to periodically validate the correct operation of the on-site hardware and firmware elements of the TCB.
NOTE FROM CLEMENT:
This is a question that confuses a lot of people because most people take for granted that the orange book with its associated Bell LaPadula model has nothing to do with integrity.
However you have to be careful about the context in which the word integrity is being used.
You can have Data Integrity and you can have System Integrity which are two completely different things.
Yes, the Orange Book does not specifically address the Integrity requirements, however it has to run on top of systems that must meet some integrity requirements.
This is part of what they call operational assurance which is defined as a level of confidence of a trusted system's architecture and implementation that enforces the system's security policy. It includes:
System architecture
Covert channel analysis
System integrity
Trusted recovery
DATA INTEGRITY
Data Integrity is very different from System Integrity. When you have integrity of the data, there are three goals:
1 . Prevent authorized users from making unauthorized modifications
2 . Preven unauthorized users from making modifications
3. Maintaining internal and external consistancy of the data
Bell LaPadula which is based on the Orange Book address does not address Integrity, it addresses only Confidentiality.
Biba address only the first goal of integrity.
Clark-Wilson addresses the three goals of integrity.
In the case of this question, there is a system integrity requirement within the TCB. As mentioned above here is an extract of the requirements: Hardware and/or software features shall be provided that can be used to periodically validate the correct operation of the on-site hardware and firmware elements of the TCB.
The following answers are incorrect:
Security Testing. Is incorrect because Security Testing has no set of requirements in the
Orange book.
Design Verification. Is incorrect because the Orange book's requirements for Design
Verification include: A formal model of the security policy must be clearly identified and documented, including a mathematical proof that the model is consistent with its axioms and is sufficient to support the security policy.
System Architecture Specification. Is incorrect because there are no requirements for
System Architecture Specification in the Orange book.
The following reference(s) were used for this question:
Trusted Computer Security Evaluation Criteria (TCSEC), DoD 5200.28-STD, page 15, 18,
25, 31, 40, 50.
Harris, Shon (2012-10-25). CISSP All-in-One Exam Guide, 6th Edition, Security
Architecture and Design, Page 392-397, for users with the Kindle Version see Kindle
Locations 28504-28505.
and
DOD TCSEC - http://www.cerberussystems.com/INFOSEC/stds/d520028.htm
NEW QUESTION: 3
Ursa Major Solarでは、管理者が新しいユーザーを設定しました。デフォルトでは、電子メールリンクの有効期限が切れる前に、ユーザーはアカウントをアクティブ化する必要があります。
リンクの有効期限が切れるまで、ユーザーはどのくらいの時間がかかりますか？
A. 14日
B. 6日
C. 10日
D. 7日
Answer: D
NEW QUESTION: 4
タイムクリティカルな建設プロジェクトで、監督者と技術者の間で誤解が発生しました。誤解は大きな対立になり、技術者はプロジェクトマネージャーに監督者の下で作業を続けることができなくなったと不満を述べました。監督者は、競合の理由として技術者のパフォーマンスの低下を挙げています。プロジェクトマネージャーはどのように問題を解決する必要がありますか？
A. 技術者にジャストインタイムのトレーニングを提供して、スキルセットを向上させます。
B. 時間が重要であるため、技術者を高性能のリソースに置き換えます
C. 上司に相談して、彼らのアプローチと態度を和らげます。
D. 技術者および監督者との直接的な共同アプローチを使用します。
Answer: B