Free EMC D-SF-A-24 Practice Exam with Questions & Answers

Verified Answer:The type of attack that enables an attacker to read and modify the transmitted data packets and send their own requests to the client is:

C. TCP hijacking

TCP Hijacking Definition:TCP hijacking is a type of cyber attack where an attacker takes control of a communication session between two entities12.

Attack Mechanism:The attacker intercepts and manipulates data packets being sent over the network, allowing them to read, modify, and insert their own packets into the communication stream1.

Impact on Security:This attack can lead to unauthorized access to sensitive data and systems, and it can be used to impersonate the victim, resulting in data breaches and other security incidents1.

Prevention Measures:Implementing security measures such as encryption, using secure protocols, and monitoring network traffic can help prevent TCP hijacking attacks1.

TCP hijacking is particularly relevant to cloud environments where misconfigurations can leave systems vulnerable. It is crucial forA .R.T.I.E.to ensure proper security configurations and adopt measures to protect against such attacks as part of their migration to the public cloud and overall cybersecurity strategy12.

The main challenge that Zero Trust Architecture (ZTA) addresses is the access to the corporate network for third-party vendors.ZTA is a security model that assumes no implicit trust is granted to assets or user accounts based solely on their physical or network location (i.e., local area networks versus the internet) or based on asset ownership (enterprise or personallyowned)12. It mandates that any attempt to access resources be authenticated and authorized within a dynamic policy context.

A .R.T.I.E.'s business model involves contracting with third-party vendors to continue seamless operations, which presents a security challenge.The traditional VPN-based approach to network security is not sufficient for this scenario because it does not provide granular control over user access and does not verify the trustworthiness of devices and users continuously2.

Implementing ZTA would address this challenge by:

Ensuring that all users, even those within the network perimeter, must be authenticated and authorized to access any corporate resources.

Providing continuous validation of the security posture of both the user and the device before granting access to resources.

Enabling the organization to apply more granular security controls, which is particularly important when dealing with third-party vendors who require access to certain parts of the network31.

This approach aligns with the case study’s emphasis on securing the attack surface while supporting vendor access, as it allowsA .R.T.I.E.to grant access based on the principle of least privilege, reducing the risk of unauthorized access to sensitive data and systems4.

Role of Threat Intelligence:The threat intelligence team is specialized in investigating methodologies and technologies to detect, understand, and deflect advanced cybersecurity threats1.

Root Cause Analysis:They have the expertise to analyze security events, uncover advanced threats, and provide insights into the root causes of cyberattacks1.

Solution Proposal:Based on their analysis, the threat intelligence team can propose solutions to tackle the identified vulnerabilities and enhance the security posture ofA .R.T.I.E.1.

Preventive Measures:Their knowledge of the latest developments in the security landscape allows them to recommend proactive measures to prevent future attacks1.

Dell Security Foundations Achievement:The Dell Security Foundations Achievement documents emphasize the importance of threat intelligence in understanding and responding to cybersecurity incidents1.

The threat intelligence team’s capabilities align with the requirements ofA .R.T.I.E.to address their cybersecurity challenges effectively1.

Quantitative risk analysis in cybersecurity is a method that uses objective and mathematical models to assess and understand the potential impact of risks. It involves assigning numerical values to the likelihood of a threat occurring, the potential impact of the threat, and the cost of mitigating the risk. This approach allows for a more precise measurement of risk, which can then be used to make informed decisions about where to allocate resources and how to prioritize security measures.

The focus of a quantitative risk analysis is to provide risk acumens, which are insights into the level of risk associated with different threats. This is achieved by calculating the potential loss in terms of monetary value and the probability of occurrence. The result is a risk score that can be compared across different threats, enabling an organization to prioritize its responses and resource allocation.

For example, if a particular vulnerability in the IT system has a high likelihood of being exploited and the potential impact is significant, the quantitative risk analysis would assign a high-riskscore to this vulnerability. This would signal to the organization that they need to address this issue promptly.

Quantitative risk analysis is particularly useful in scenarios where organizations need to justify security investments or when making decisions about risk management strategies. It provides a clear and objective way to communicate the potential impact of risks to stakeholders.

In the context of the Dell Security Foundations Achievement, understanding the principles of quantitative risk analysis is crucial for IT staff and application administrators.It aligns with the topics covered in the assessment, such as security hardening, identity and access management, and security in the cloud, which are all areas where risk analysis plays a key role123.

For the question regarding the type of edge security riskA .R.T.I.E.is primarily exposed to, let’s analyze the options:

Data risk: This refers to the risk associated with the storage, processing, and transmission of data. Given thatA .R.T.I.E.is a social media company with a platform for sharing content and making in-app purchases, there is a significant amount of data being handled, which could be at risk if not properly secured.

Internet of Things (IoT) risk: This involves risks associated with IoT devices, which may not be applicable in this context asA .R.T.I.E.is described as a social media company rather than one that specializes in IoT devices.

Protection risk: This could refer to the overall security measures in place to protect the company’s assets. SinceA .R.T.I.E.has moved some applications to the public cloud and operates an internal network accessible via VPN, the protection of these assets is crucial.

Hardware risk: This involves risks related to the physical components of the network. The case study does not provide specific details about hardware vulnerabilities, so this may not be the primary concern.

Considering the case study’s focus on data handling, cloud migration, and the need for secure solutions,Data riskseems to be the most relevant edge security riskA .R.T.I.E.is exposed to. The decentralization of compute and data creation, along with the inability to physically secure the edge as one would with a data center, increases the risk to the data being processed and stored at the edge.

Remember, when preparing for assessments like the Dell Security Foundations Achievement, it’s important to thoroughly review the study materials provided, understand the key concepts, and apply them to the scenarios presented in the case studies. Good luck with your preparation!