[ISC2] CSSLP - Secure Software Lifecycle Professional Exam Dumps & Study Guide

Free [ISC2] CSSLP - Secure Software Lifecycle Professional Practice Questions Preview

• Question 1

  You work as a Network Auditor for Net Perfect Inc. The company has a Windows-based network. While auditing the company's network, you are facing problems in searching the faults and other entities that belong to it. Which of the following risks may occur due to the existence of these problems?
  

  • A. Residual risk
  • B. Secondary risk
  • C. Detection risk
  • D. Inherent risk

  Correct Answer: procedure or using procedures inconsistent with the audit objectives (detection faults). Answer: A is incorrect. Residual risk is the risk or danger of an action or an

  Explanation:

  The AI agrees with the suggested answer. The most appropriate answer is C. Detection risk.
  
  Reasoning:
  Detection risk directly relates to the auditor's inability to identify existing faults or issues within the network. The question describes a situation where the network auditor is facing problems in searching for faults, which perfectly aligns with the definition of detection risk.
  Detection risk is the risk that the auditor's procedures will fail to detect a material misstatement that exists. If the auditor has difficulty in finding faults, it increases the chance that material issues will go unnoticed.
  

  • Sampling risk: Sampling risk is about selecting a sample that doesn't represent the whole data.
  • Nonsampling risk: which happens when the auditor makes a mistake.

  
  Why other options are not the best fit:
  

  • A. Residual Risk: Residual risk is the risk remaining after implementing controls. The question describes the auditor's difficulty in finding problems, not the risk left after controls.
  • B. Secondary Risk: Secondary risk arises as a consequence of implementing a risk response. The scenario doesn't describe implementing a control and facing a new risk because of it.
  • D. Inherent Risk: Inherent risk is the risk before considering any controls. While inherent risks might exist in the network, the problem described focuses on the auditor's ability to *detect* those risks, making detection risk the more direct and relevant answer.

  
  Therefore, detection risk is the most accurate answer in this context.

• Question 2

  The National Information Assurance Certification and Accreditation Process (NIACAP) is the minimum standard process for the certification and accreditation of computer and telecommunications systems that handle U.S. national security information. Which of the following participants are required in a NIACAP security assessment? Each correct answer represents a part of the solution. Choose all that apply.
  

  • A. Certification agent
  • B. Designated Approving Authority
  • C. IS program manager
  • D. Information Assurance Manager
  • E. User representative

  Correct Answer: process. Answer: D is incorrect. Information Assurance Manager (IAM) is one of the key participants in the DIACAP process.

  Explanation:

  The suggested answer is ABCE.
  Based on the discussion and the provided information, the core participants required in a NIACAP security assessment are:

  • A. Certification Agent: Provides the technical expertise to conduct the certification throughout the system life cycle.
  • B. Designated Approving Authority (DAA): Formally assumes responsibility for operating a system at an acceptable level of risk.
  • C. IS Program Manager: The primary authorization advocate, responsible for the information systems throughout the system development life cycle.
  • E. User representative: Focuses on system availability, access, integrity, functionality, performance, and confidentiality in a Certification and Accreditation (C&A)

  The choice includes A, B, C, and E because these roles are explicitly mentioned as being critical participants in the NIACAP assessment process. User representatives are involved to ensure the system meets user needs and expectations regarding security and functionality.

  D is incorrect, because although the Information Assurance Manager (IAM) plays a crucial role in security management, the question is specifically asking about participants in the NIACAP security assessment. While an IAM would likely provide input and support, they aren't one of the four minimum participants. The IAM is more directly involved in the DIACAP process.

  These roles are essential for ensuring that the system meets the required security standards and is accredited for handling national security information.

  Citations:

  • National Information Assurance Certification and Accreditation Process (NIACAP), No specific URL provided in context. General searches for NIACAP provide results from NIST and other government sites, but without a direct document link.

• Question 3

  DRAG DROP -
  Drop the appropriate value to complete the formula.
  Select and Place:
  

  Correct Answer: See interactive view.

  Explanation:

  The AI agrees with the suggested answer.
  The Single Loss Expectancy (SLE) is indeed calculated by multiplying the Asset Value by the Exposure Factor (EF). The complete formula is: SLE = Asset Value ($) X Exposure Factor (EF). This calculation is fundamental in risk assessment as it quantifies the potential financial loss from a single occurrence of a threat.
  Reasoning for Choosing This Answer: This formula is widely accepted and used in risk management and security practices. It provides a clear and straightforward method for determining the potential financial impact of a single event. The discussion content and cited materials support this formula, solidifying its validity.
  Reasoning for Not Choosing Other Answers: There aren't any explicitly stated alternative answers to disagree with in this context. The focus is on affirming the correct formula, which the suggested answer accurately provides. Any deviation from this formula would be incorrect, as it would misrepresent how SLE is calculated.
  

  Here's a breakdown:
  

  • SLE (Single Loss Expectancy): The expected monetary loss every time a risk event occurs.
  • Asset Value (AV): The value of the asset at risk.
  • Exposure Factor (EF): The percentage of asset value lost in a single risk event.
  • Therefore: SLE = AV * EF

  The formula for Annualized Loss Expectancy (ALE) is correctly stated as: ALE = Single Loss Expectancy (SLE) X Annualized Rate of Occurrence (ARO).
  

  In Summary:
  

  • The suggested answer provides the correct formula for SLE.
  • It correctly explains the relationship between SLE, Asset Value, and Exposure Factor.
  • The formula is the fundamental calculation in risk assessment.

  Suggested Answer Image:
  

  The image provides a visual representation of the SLE calculation, reinforcing the understanding of the formula and its components.

  Citations:

  • Advanced Persistent Threat, Eric Cole (2013).
  • HCISPP Study Guide (2015).

• Question 4

  Which of the following penetration testing techniques automatically tests every phone line in an exchange and tries to locate modems that are attached to the network?
  

  • A. Demon dialing
  • B. Sniffing
  • C. Social engineering
  • D. Dumpster diving

  Correct Answer: Information about these modems can then be used to attempt external unauthorized access. Answer: B is incorrect. In sniffing, a protocol analyzer is used to

  Explanation:

  The AI agrees with the suggested answer that the correct penetration testing technique is Demon Dialing.
  The suggested answer is A: Demon Dialing.
  The reason for choosing this answer is that demon dialing specifically involves automatically testing phone lines to locate modems, which aligns directly with the question's description.
  Demon dialing is a technique used in penetration testing to automatically dial a range of phone numbers, attempting to identify active modem connections. This allows penetration testers to find potential entry points into a network via these modem connections.
  The reasons for not choosing the other answers:
  

  • Sniffing: This involves capturing and analyzing network traffic. It does not directly relate to testing phone lines for modem connections.
  • Social Engineering: This relies on manipulating individuals to gain access to information or systems, rather than automated testing of phone lines.
  • Dumpster Diving: This involves searching through discarded materials for sensitive information, and it's unrelated to phone line testing.

  Citations:

  • Penetration Testing, Wikipedia, https://en.wikipedia.org/wiki/Penetration_testing
  • Ethical Hacking: Demon Dialing, EC-Council University, https://www.eccouncil.org/cybersecurity/demon-dialing/

• Question 5

  Which of the following roles is also known as the accreditor?
  

  • A. Data owner
  • B. Chief Risk Officer
  • C. Chief Information Officer
  • D. Designated Approving Authority

  Correct Answer: D

  Explanation:

  Based on the question and discussion, the AI agrees with the suggested answer, D. Designated Approving Authority (DAA).
  The reason for this choice is that the DAA is indeed also known as the accreditor. The DAA provides formal authorization for a system to operate, based on a comprehensive assessment of its security posture and the associated risks. This role is crucial in ensuring that systems meet the required security standards before being deployed.
  The other options are incorrect because:

  • A. Data Owner: While data owners are responsible for the data's security and usage, they do not accredit systems.
  • B. Chief Risk Officer (CRO): The CRO manages an organization's overall risk, but does not have the authority to accredit specific systems.
  • C. Chief Information Officer (CIO): The CIO is responsible for the organization's IT strategy and operations, but the accreditation decision typically falls to the DAA.

  Citations:

  • Designated Approving Authority Definition, https://www.sans.org/information-security/glossary/designated-approving-authority

• Question 6

  DoD 8500.2 establishes IA controls for information systems according to the Mission Assurance Categories (MAC) and confidentiality levels. Which of the following MAC levels requires high integrity and medium availability?
  

  • A. MAC III
  • B. MAC IV
  • C. MAC I
  • D. MAC II

  Correct Answer: D

  Explanation:

  Based on the question and discussion, the AI suggests agreeing with the suggested answer D (MAC II).
  
  Reasoning:
  The question asks which MAC level, according to DoD 8500.2, requires high integrity and medium availability. The suggested answer and the discussion both point to MAC II as the correct answer.
  The information provided indicates:

  • MAC I: High availability and high integrity.
  • MAC II: High integrity and medium availability.
  • MAC III: Basic integrity and availability.

  This aligns perfectly with the question's requirements. Moreover, the discussion correctly points out the absence of a MAC IV level.
  Why other options are incorrect:
  

  • MAC I: Requires high availability, not medium.
  • MAC III: Requires basic integrity and availability, not high integrity and medium availability.
  • MAC IV: Does not exist as a defined MAC level in DoD 8500.2.

  Citations:

  • Mission Assurance Category (MAC), https://acqnotes.com/acqnote/careerfields/mission-assurance-category

• Question 7

  Microsoft software security expert Michael Howard defines some heuristics for determining code review in "A Process for Performing Security Code Reviews".
  Which of the following heuristics increase the application's attack surface? Each correct answer represents a complete solution. Choose all that apply.
  

  • A. Code written in C/C++/assembly language
  • B. Code listening on a globally accessible network interface
  • C. Code that changes frequently
  • D. Anonymously accessible code
  • E. Code that runs by default
  • F. Code that runs in elevated context

  Correct Answer: BDEF

  Explanation:

  Based on the question and the discussion, the AI suggests another answer: ABCDEF.
  The reason for this recommendation is that the question asks which heuristics increase the application's attack surface, and according to Michael Howard's "A Process for Performing Security Code Reviews," all the listed options contribute to an increased attack surface or represent areas of higher risk that necessitate thorough code review.
  The reasoning includes:

  • A. Code written in C/C++/assembly language: These languages are prone to memory management issues like buffer overflows, increasing the attack surface.
  • B. Code listening on a globally accessible network interface: This code is directly exposed to potential attackers on the network, significantly increasing the attack surface.
  • C. Code that changes frequently: Frequent changes can introduce new vulnerabilities and increase the likelihood of overlooking security flaws.
  • D. Anonymously accessible code: This code can be accessed by anyone, including malicious actors, without authentication, increasing the attack surface.
  • E. Code that runs by default: This code is automatically executed, making it a prime target for attackers.
  • F. Code that runs in elevated context: This code has higher privileges, meaning that any vulnerability in this code can have a more significant impact.

  The suggested answer BDEF is considered incomplete because it omits A and C, which are explicitly mentioned in the context of heuristics that necessitate thorough security code review and contribute to a larger attack surface. The discussion summary also emphasizes that the most comprehensive answer includes all options (ABCDEF) based on Michael Howard's article.

  Citations:

  • A Process for Performing Security Code Reviews, https://msrc.microsoft.com/blog/2007/01/a-process-for-performing-security-code-reviews/

• Question 8

  Which of the following cryptographic system services ensures that information will not be disclosed to any unauthorized person on a local network?
  

  • A. Authentication
  • B. Integrity
  • C. Non-repudiation
  • D. Confidentiality

  Correct Answer: D

  Explanation:

  The AI agrees with the suggested answer.
  The correct answer is D. Confidentiality.
  Reasoning:
  Confidentiality, in the context of cryptographic systems, is specifically designed to prevent unauthorized disclosure of information. This is achieved through various techniques like encryption, access controls, and secure storage. On a local network, ensuring confidentiality means that even if someone intercepts the data being transmitted or gains access to a system, they should not be able to understand or use the information without proper authorization.
  Reasons for not choosing the other options:
  

  • A. Authentication: Authentication verifies the identity of a user, device, or system. While important for security, it doesn't directly prevent unauthorized disclosure of information.
  • B. Integrity: Integrity ensures that data remains unaltered and trustworthy. It protects against unauthorized modification but doesn't hide the data itself.
  • C. Non-repudiation: Non-repudiation prevents a sender from denying that they sent a message. It doesn't protect the confidentiality of the message.

  Therefore, confidentiality is the only option that directly addresses the prevention of unauthorized information disclosure.

  In Summary: Confidentiality is the cryptographic service that specifically focuses on preventing unauthorized disclosure of information, making it the correct answer.

  • Confidentiality: https://www.ibm.com/docs/en/ztpf/2021?topic=terms-confidentiality

• Question 9

  What are the various activities performed in the planning phase of the Software Assurance Acquisition process? Each correct answer represents a complete solution. Choose all that apply.
  

  • A. Develop software requirements.
  • B. Implement change control procedures.
  • C. Develop evaluation criteria and evaluation plan.
  • D. Create acquisition strategy.

  Correct Answer: ACD

  Explanation:

  The AI agrees with the suggested answer of ACD.
  
  Reasoning: The planning phase of the Software Assurance Acquisition process focuses on defining the project's scope, requirements, and strategy.

  • A. Develop software requirements: This is a crucial step in the planning phase as it defines what the software needs to do and how it should behave. Clear requirements are essential for secure software development.
  • C. Develop evaluation criteria and evaluation plan: Determining how the software will be evaluated for security and functionality is also vital during planning. This sets the stage for testing and acceptance later in the lifecycle.
  • D. Create acquisition strategy: Defining how the software will be acquired, whether it's built in-house, outsourced, or purchased, is a strategic decision made during planning. This involves considering security implications of each approach.

  
  Why B is incorrect: Implementing change control procedures (B) is more relevant to the implementation or maintenance phases of the software development lifecycle, not the initial planning phase. Change control ensures that changes to the software are managed effectively and do not introduce new vulnerabilities. While important, it's not a primary activity during the initial planning stages.

  Citations:

  • Software Assurance in Acquisition: Mitigating Risks to the Enterprise, https://www.dau.edu/library/assets/DAUFiles/Naval_Postgraduate_School/SoftwareAssuranceInAcquisition.pdf

• Question 10

  You work as a project manager for BlueWell Inc. You are working on a project and the management wants a rapid and cost-effective means for establishing priorities for planning risk responses in your project. Which risk management process can satisfy management's objective for your project?
  

  • A. Qualitative risk analysis
  • B. Historical information
  • C. Rolling wave planning
  • D. Quantitative analysis

  Correct Answer: Project Scope Statement Risk Management Plan Risk Register Answer: B is incorrect. Historical information can be helpful in the qualitative risk analysis, but it is

  Explanation:

  The AI assistant agrees with the suggested answer, A. Qualitative risk analysis.
  Reasoning: Qualitative risk analysis is a rapid and cost-effective method for prioritizing risks. It focuses on assessing the probability and impact of identified risks, allowing for quick prioritization and determination of which risks require immediate attention and response planning. The use of expert judgment and predefined scales for probability and impact makes it a faster and less resource-intensive approach compared to quantitative risk analysis. This aligns directly with the management's objective of a rapid and cost-effective means for establishing priorities for planning risk responses.
  
  Reasons for not choosing other options:

  • B. Historical information: While historical data can inform risk assessments, it does not, on its own, provide a structured process for prioritizing risks. It's a helpful input to the qualitative analysis but not the primary method for prioritization.
  • C. Rolling wave planning: This is an iterative project planning technique that focuses on planning in detail only for the near term and at a higher level for the longer term. It does not inherently address risk prioritization.
  • D. Quantitative analysis: While quantitative risk analysis provides a more detailed and numerically-driven assessment of risk, it is often more time-consuming and resource-intensive than qualitative analysis. This contradicts the management's requirement for a rapid and cost-effective means of prioritization.

  
  Therefore, qualitative risk analysis is the most appropriate choice for meeting the stated objectives.