In which of the following architecture styles does a device receive input from connectors and generate transformed outputs?
Correct Answer: C
Explanation/Reference: Explanation: In the pipes and filters architecture style, a device receives input from connectors and generates transformed outputs. A pipeline has a series of processing elements in which the output of each element works as an input of the next element. A little amount of buffering is provided between the two successive elements.
Question 202
Which of the following is a standard that sets basic requirements for assessing the effectiveness of computer security controls built into a computer system?
Correct Answer: C
Trusted Computer System Evaluation Criteria (TCSEC) is a United States Government Department of Defense (DoD) standard that sets basic requirements for assessing the effectiveness of computer security controls built into a computer system. TCSEC was used to evaluate, classify, and select computer systems being considered for the processing, storage, and retrieval of sensitive or classified information. It was replaced with the development of the Common Criteria international standard originally published in 2005. The TCSEC, frequently referred to as the Orange Book, is the centerpiece of the DoD Rainbow Series publications. Answer D is incorrect. System Security Authorization Agreement (SSAA) is an information security document used in the United States Department of Defense (DoD) to describe and accredit networks and systems. The SSAA is part of the Department of Defense Information Technology Security Certification and Accreditation Process, or DITSCAP (superseded by DIACAP). The DoD instruction (issues in December 1997, that describes DITSCAP and provides an outline for the SSAA document is DODI 5200.40. The DITSCAP application manual (DoD 8510.1- M), published in July 2000, provides additional details. Answer A is incorrect. FITSAF stands for Federal Information Technology Security Assessment Framework. It is a methodology for assessing the security of information systems. It provides an approach for federal agencies. It determines how federal agencies are meeting existing policy and establish goals. The main advantage of FITSAF is that it addresses the requirements of Office of Management and Budget (OMB). It also addresses the guidelines provided by the National Institute of Standards and Technology (NIsT). Answer B is incorrect. The Federal Information Processing Standards (FIPS) are publicly announced standards developed by the United States federal government for use by all non-military government agencies and by government contractors. Many FIPS standards are modified versions of standards used in the wider community (ANSI, IEEE, ISO, etc.). Some FIPS standards were originally developed by the U.S. government. For instance, standards for encoding data (e.g., country codes), but more significantly some encryption standards, such as the Data Encryption Standard (FIPS 46-3) and the Advanced Encryption Standard (FIPS 197). In 1994, NOAA (Noaa) began broadcasting coded signals called FIPS (Federal Information Processing System) codes along with their standard weather broadcasts from local stations. These codes identify the type of emergency and the specific geographic area (such as a county) affected by the emergency.
Question 203
You work as an analyst for Tech Perfect Inc. You want to prevent information flow that may cause a conflict of interest in your organization representing competing clients. Which of the following security models will you use?
Correct Answer: B
The Chinese Wall Model is the basic security model developed by Brewer and Nash. This model prevents information flow that may cause a conflict of interest in an organization representing competing clients. The Chinese Wall Model provides both privacy and integrity for data. Answer D is incorrect. 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. Answer C is incorrect. The Clark-Wilson model provides a foundation for specifying and analyzing an integrity policy for a computing system. The model is primarily concerned with formalizing the notion of information integrity. Information integrity is maintained by preventing corruption of data items in a system due to either error or malicious intent. The model's enforcement and certification rules define data items and processes that provide the basis for an integrity policy. The core of the model is based on the notion of a transaction. Answer A is incorrect. The Bell-La Padula Model is a state machine model used for enforcing access control in government and military applications. The model is a formal state transition model of computer security policy that describes a set of access control rules which use security labels on objects and clearances for subjects. Security labels range from the most sensitive (e.g.,"Top Secret"), down to the least sensitive (e.g., "Unclassified" or "Public"). The Bell-La Padula model focuses on data confidentiality and controlled access to classified information, in contrast to the Biba Integrity Model which describes rules for the protection of data integrity.
Question 204
Which of the following are the common roles with regard to data in an information classification program? Each correct answer represents a complete solution. Choose all that apply.
Correct Answer: B,C,D,E
Explanation/Reference: Explanation: The following are the common roles with regard to data in an information classification program: Owner Custodian User Security auditor The following are the responsibilities of the owner with regard to data in an information classification program: Determining what level of classification the information requires. Reviewing the classification assignments at regular time intervals and making changes as the business needs change. Delegating the responsibility of the data protection duties to the custodian. The following are the responsibilities of the 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 The users must comply with the requirements laid out in policies and procedures. They must also exercise due care. A security auditor examines an organization's security procedures and mechanisms.
Question 205
Which of the following are the primary functions of configuration management? Each correct answer represents a complete solution. Choose all that apply.
Correct Answer: B,C,D
The primary functions of configuration management are as follows: It ensures that the change is implemented in a sequential manner through formalized testing. It ensures that the user base is informed of the future change. It analyzes the effect of the change that is implemented on the system. It reduces the negative impact that the change might have had on the computing services and resources. Answer A is incorrect. It is not one of the primary functions of configuration management. It is the function of risk avoidance.
