The Phase 4 of DITSCAP C&A is known as Post Accreditation. This phase starts after the system has been accredited in Phase 3. What are the process activities of this phase? Each correct answer represents a complete solution. Choose all that apply.
Correct Answer: A,B,C,D,E
Explanation/Reference: Explanation: The Phase 4 of DITSCAP C&A is known as Post Accreditation. This phase starts after the system has been accredited in the Phase 3. The goal of this phase is to continue to operate and manage the system and to ensure that it will maintain an acceptable level of residual risk. The process activities of this phase are as follows: System operations Security operations Maintenance of the SSAA Change management Compliance validation Answer: F is incorrect. It is a Phase 3 activity.
Question 132
Which of the following methods is a means of ensuring that system changes are approved before being implemented, only the proposed and approved changes are implemented, and the implementation is complete and accurate?
Correct Answer: B
Explanation/Reference: Explanation: Documentation control is a method of ensuring that system changes should be agreed upon before being implemented, only the proposed and approved changes are implemented, and the implementation is complete and accurate. Documentation control is involved in the strict events for proposing, monitoring, and approving system changes and their implementation. It helps the change process by supporting the person who synchronizes the analytical task, approves system changes, reviews the implementation of changes, and oversees other tasks such as documenting the controls. AnswerD is incorrect. Configuration auditing is the quality assurance element of configuration management. It is occupied in the process of periodic checks to establish the consistency and completeness of accounting information and to validate that all configuration management policies are being followed. Configuration audits are broken into functional and physical configuration audits. They occur either at delivery or at the moment of effecting the change. A functional configuration audit ensures that functional and performance attributes of a configuration item are achieved, while a physical configuration audit ensures that a configuration item is installed in accordance with the requirements of its detailed design documentation. AnswerA is incorrect. Configuration control is a procedure of the Configuration management. Configuration control is a set of processes and approval stages required to change a configuration item's attributes and to re-baseline them. It supports the change of the functional and physical attributes of software at various points in time, and performs systematic control of changes to the identified attributes. Answer C is incorrect. Configuration identification is the process of identifying the attributes that define every aspect of a configuration item. A configuration item is a product (hardware and/ or software) that has an end-user purpose. These attributes are recorded in configuration documentation and baselined. Baselining an attribute forces formal configuration change control processes to be effected in the event that these attributes are changed.
Question 133
DRAG DROP Drag and drop the appropriate external constructs in front of their respective functions.
Correct Answer:
Explanation: There are two types of compositional constructs: 1.External constructs: The various types of external constructs are as follows: Cascading: In this type of external construct, one system gains the input from the output of another system. Feedback: In this type of external construct, one system provides the input to another system, which in turn feeds back to the input of the first system. Hookup: In this type of external construct, one system communicates with another system as well as with external entities. 2.Internal constructs: The internal constructs include intersection, union, and difference.
Question 134
Which of the following attacks causes software to fail and prevents the intended users from accessing software?
Correct Answer: C
A sabotage attack is an attack that causes software to fail. It also prevents the intended users from accessing software. A sabotage attack is referred to as a denial of service (DoS) or compromise of availability. Answer B is incorrect. The reconnaissance attack enables an attacker to collect information about software and operating environment. Answer D is incorrect. The disclosure attack exposes the revealed data to an attacker. Answer A is incorrect. The enabling attack delivers an easy path for other attacks.
Question 135
Which of the following is a malicious exploit of a website, whereby unauthorized commands are transmitted from a user trusted by the website?
Correct Answer: D
Explanation/Reference: Explanation: CSRF (Cross-Site Request Forgery) is a malicious exploit of a website, whereby unauthorized commands are transmitted from a user trusted by the website. It is also known as a one-click attack or session riding. CSRF occurs when a user is tricked by an attacker into activating a request in order to perform some unauthorized action. It increases data loss and malicious code execution. AnswerA is incorrect. Cross- site scripting (XSS) is a type of computer security vulnerability typically found in web applications which enable malicious attackers to inject client-side script into web pages viewed by other users. An exploited cross-site scripting vulnerability can be used by attackers to bypass access controls, such as the same origin policy. Cross-site scripting carried out on websites were roughly 80% of all security vulnerabilities documented by Symantec as of 2007. Their impact may range from a petty nuisance to a significant security risk, depending on the sensitivity of the data handled by the vulnerable site, and the nature of any security mitigations implemented by the site owner. Answer: C is incorrect. A side channel attack is based on information gained from the physical implementation of a cryptosystem, rather than brute force or theoretical weaknesses in the algorithms (compare cryptanalysis). For example, timing information, power consumption, electromagnetic leaks or even sound can provide an extra source of information which can be exploited to break the system. Many side- channel attacks require considerable technical knowledge of the internal operation of the system on which the cryptography is implemented. Answer: B is incorrect. Injection flaws are the vulnerabilities where a foreign agent illegally uses a sub-system. They are the vulnerability holes that can be used to attack a database of Web applications. It is the most common technique of attacking a database. Injection occurs when user-supplied data is sent to an interpreter as part of a command or query. The attacker's hostile data tricks the interpreter into executing involuntary commands or changing data. Injection flaws include XSS (HTML Injection) and SQL Injection.
