The National Institute of Standards and Technology (NIST), known between 1901 and 1988 as the National Bureau of Standards (NBS), is a measurement standards laboratory which is a non-regulatory agency of the United States Department of Commerce. The institute's official mission is to promote U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve quality of life. Answer D is incorrect. The Committee on National Security Systems (CNSS) is a United States intergovernmental organization that sets policy for the security of the US security systems. The CNSS holds discussions of policy issues, sets national policy, directions, operational procedures, and guidance for the information systems operated by the U.S. Government, its contractors, or agents that contain classified information, involve intelligence activities, involve cryptographic activities related to national security, etc. Answer A is incorrect. The National Security Agency/Central Security Service (NSA/CSS) is a crypto-logic intelligence agency of the United States government. It is administered as part of the United States Department of Defense. NSA is responsible for the collection and analysis of foreign communications and foreign signals intelligence, which involves cryptanalysis. NSA is also responsible for protecting U.S. government communications and information systems from similar agencies elsewhere, which involves cryptography. NSA is a key component of the U.S. Intelligence Community, which is headed by the Director of National Intelligence. The Central Security Service is a co-located agency created to coordinate intelligence activities and cooperation between NSA and U.S. military cryptanalysis agencies. NSA's work is limited to communications intelligence. It does not perform field or human intelligence activities. Answer C is incorrect. The United States Congress is the bicameral legislature of the federal government of the United States of America. It consists of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C. Both senators and representatives are chosen through direct election. Each of the 435 members of the House of Representatives represents a district and serves a two-year term. House seats are apportioned among the states by population. The 100 Senators serve staggered six-year terms. Each state has two senators, regardless of population. Every two years, approximately one-third of the Senate is elected at a time. The United States Congress main function is to make laws. The Office of the Law Revision Counsel organizes and publishes the United States Code (USC). It is a consolidation and codification by subject matter of the general and permanent laws of the United States.

Explanation/Reference:
Explanation: Following are the various U.S. Federal Government information security standards: AC Access Control AT Awareness and Training AU Audit and Accountability CA Certification, Accreditation, and Security Assessments CM Configuration Management CP Contingency Planning IA Identification and Authentication IR Incident Response MA Maintenance MP Media Protection PE Physical and Environmental Protection PL Planning PS Personnel Security RA Risk Assessment SA System and Services Acquisition SC System and Communications Protection SI System and Information Integrity
AnswerB is incorrect. Information systems acquisition, development, and maintenance is an International
information security standard.

The Recovery Point Objective (RPO) describes the acceptable amount of data loss measured in time. It is the point in time to which data must be recovered as defined by the organization. The RPO is generally a definition of what an organization determines is an "acceptable loss" in a disaster situation. If the RPO of a company is 2 hours and the time it takes to get the data back into production is 5 hours, the RPO is still 2 hours. Based on this RPO the data must be restored to within 2 hours of the disaster. Answer B is incorrect. The Recovery Time Objective (RTO) is the duration of time and a service level within which a business process must be restored after a disaster or disruption in order to avoid unacceptable consequences associated with a break in business continuity. It includes the time for trying to fix the problem without a recovery, the recovery itself, tests and the communication to the users. Decision time for user representative is not included. The business continuity timeline usually runs parallel with an incident management timeline and may start at the same, or different, points. In accepted business continuity planning methodology, the RTO is established during the Business Impact Analysis (BIA) by the owner of a process (usually in conjunction with the Business Continuity planner). The RTOs are then presented to senior management for acceptance. The RTO attaches to the business process and not the resources required to support the process. Answer D is incorrect. The Recovery Time Actual (RTA) is established during an exercise, actual event, or predetermined based on recovery methodology the technology support team develops. This is the time frame the technology support takes to deliver the recovered infrastructure to the business. Answer C is incorrect. The Recovery Consistency Objective (RCO) is used in Business Continuity Planning in addition to Recovery Point Objective (RPO) and Recovery Time Objective (RTO). It applies data consistency objectives to Continuous Data Protection services.

Explanation/Reference:
Explanation: 2Mosaic is a tool used for watermark breaking. It is an attack against a digital watermarking system. In this type of attack, an image is chopped into small pieces and then placed together. When this image is embedded into a web page, the web browser renders the small pieces into one image. This image looks like a real image with no watermark in it. This attack is successful, as it is impossible to read watermark in very small pieces. Answer: D is incorrect. Gifshuffle is used to hide message or information inside GIF images. It is done by shuffling the colormap. This tool also provides compression and encryption. Answer: B and A are incorrect. Active Attacks and Steg-Only Attacks are used to attack Steganography.

is incorrect. Signature-based IDS uses a database with signatures to identify possible attacks and malicious activity. Answer B is incorrect. A network-based IDS can be a dedicated hardware appliance, or an application running on a computer, attached to the network. It monitors all traffic in a network or traffic coming through an entry-point such as an Internet connection. Answer A is incorrect. There is no such intrusion detection system (IDS) that is file-based.