SY0-701 Online Practice Questions and Answers

Correct Answer: D

The correct answer is D because it allows only the device with the IP address 10.50.10.25 to send outbound DNS requests on port 53, and denies all other devices from doing so. The other options are incorrect because they either allow all devices to send outbound DNS requests (A and C), or they allow no devices to send outbound DNS requests (B). References: You can learn more about firewall ACLs and DNS in the following resources: CompTIA Security+ SY0-701 Certification Study Guide, Chapter 4: Network Security1 Professor Messer's CompTIA SY0-701 Security+ Training Course, Section 3.2: Firewall Rules2 TOTAL: CompTIA Security+ Cert (SY0-701) | Udemy, Section 6: Network Security, Lecture 28: Firewall Rules3

Correct Answer: A

Automation is the best way to consistently determine on a daily basis whether security settings on servers have been modified. Automation is the process of using software, hardware, or other tools to perform tasks that would otherwise

require human intervention or manual effort. Automation can help to improve the efficiency, accuracy, and consistency of security operations, as well as reduce human errors and costs. Automation can be used to monitor, audit, and enforce

security settings on servers, such as firewall rules, encryption keys, access controls, patch levels, and configuration files. Automation can also alert security personnel of any changes or anomalies that may indicate a security breach or

compromise12.

The other options are not the best ways to consistently determine on a daily basis whether security settings on servers have been modified:

Compliance checklist: This is a document that lists the security requirements, standards, or best practices that an organization must follow or adhere to. A compliance checklist can help to ensure that the security settings on servers are

aligned with the organizational policies and regulations, but it does not automatically detect or report any changes or modifications that may occur on a daily basis3. Attestation: This is a process of verifying or confirming the validity or

accuracy of a statement, claim, or fact. Attestation can be used to provide assurance or evidence that the security settings on servers are correct and authorized, but it does not continuously monitor or audit any changes or modifications that

may occur on a daily basis4.

Manual audit: This is a process of examining or reviewing the security settings on servers by human inspectors or auditors. A manual audit can help to identify and correct any security issues or discrepancies on servers, but it is time-

consuming, labor-intensive, and prone to human errors. A manual audit may not be feasible or practical to perform on a daily basis.

References: 1: CompTIA Security+ SY0-701 Certification Study Guide, page 1022:

Automation and Scripting -CompTIA Security+ SY0-701 -5.1, video by Professor Messer3: CompTIA Security+ SY0-701 Certification Study Guide, page 974: CompTIA Security+ SY0-701 Certification Study Guide, page 98. : CompTIA

Security+ SY0-701 Certification Study Guide, page 99.

Correct Answer: C

An endpoint detection and response (EDR) system is a security tool that monitors and analyzes the activities and behaviors of endpoints, such as computers, laptops, mobile devices, and servers. An EDR system can detect, prevent, and respond to various types of threats, such as malware, ransomware, phishing, and advanced persistent threats (APTs). One of the features of an EDR system is to block the automatic execution of downloaded programs, which can prevent malicious code from running on the endpoint when a user clicks on a link in a phishing message. This can reduce the impact of a phishing attack and protect the endpoint from compromise. Updating the EDR policies to block automatic execution of downloaded programs is a technical control that can mitigate the risk of phishing, regardless of the user's awareness or behavior. Therefore, this is the best answer among the given options. The other options are not as effective as updating the EDR policies, because they rely on administrative or physical controls that may not be sufficient to prevent or stop a phishing attack. Placing posters around the office to raise awareness of common phishing activities is a physical control that can increase the user's knowledge of phishing, but it may not change their behavior or prevent them from clicking on a link in a phishing message. Implementing email security filters to prevent phishing emails from being delivered is an administrative control that can reduce the exposure to phishing, but it may not be able to block all phishing emails, especially if they are crafted to bypass the filters. Creating additional training for users to recognize the signs of phishing attempts is an administrative control that can improve the user's skills of phishing detection, but it may not guarantee that they will always be vigilant or cautious when receiving an email. Therefore, these options are not the best answer for this question.

References: Endpoint Detection and Response -CompTIA Security+ SY0-701 -2.2, video at 5:30; CompTIA Security+ SY0- 701 Certification Study Guide, page 163.

Correct Answer: C

A nation-state is a threat actor that is sponsored by a government or a political entity to conduct cyberattacks against other countries or organizations. Nation- states have large financial resources, advanced technical skills, and strategic objectives that may target critical systems such as military, energy, or infrastructure. Nation-states are often motivated by espionage, sabotage, or warfare12.

References: 1: CompTIA Security+ SY0-701 Certification Study Guide, page 542: Threat Actors -CompTIA Security+ SY0-701 ?2.1, video by Professor Messer.

Correct Answer: D

Peer review and approval is a practice that involves having other developers or experts review the code before it is deployed or released. Peer review and approval can help detect and prevent malicious code, errors, bugs, vulnerabilities, and poor quality in the development process. Peer review and approval can also enforce coding standards, best practices, and compliance requirements. Peer review and approval can be done manually or with the help of tools, such as code analysis, code review, and code signing.

References: CompTIA Security+ Study Guide: Exam SY0-701, 9th Edition, Chapter 11: Secure Application Development, page 543 2

Correct Answer: D

Correct Answer: B

The installation of a RADIUS server (Remote Authentication Dial-In User Service) is primarily associated with the security concept of AAA, which stands for Authentication, Authorization, and Accounting. RADIUS servers are used to manage

user credentials and permissions centrally, ensuring that only authenticated and authorized users can access network resources, and tracking user activity for accounting purposes. Authentication: Verifies the identity of a user or device.

When a user tries to access a network, the RADIUS server checks their credentials (username and password) against a database.

Authorization: Determines what an authenticated user is allowed to do. After authentication, the RADIUS server grants permissions based on predefined policies. Accounting: Tracks the consumption of network resources by users. This

involves logging session details such as the duration of connections and the amount of data transferred.

Reference: CompTIA Security+ SY0-701 Exam Objectives, Domain 4.6 - Implement and maintain identity and access management.

Correct Answer: A

The most likely reason the download was blocked, resulting in a false positive, is a misconfiguration in the endpoint protection software. False positives occur when legitimate actions are incorrectly identified as threats due to incorrect settings

or overly aggressive rules in the security software.

Misconfiguration in the endpoint protection software: Common cause of false positives, where legitimate activities are flagged incorrectly due to improper settings. Zero-day vulnerability: Refers to previously unknown vulnerabilities, which are

less likely to be associated with a false positive. Supply chain attack: Involves compromising the software supply chain, which is a broader and more severe issue than a simple download being blocked. Incorrect file permissions: Would

prevent access to files but not typically cause an alert in endpoint protection software.

Reference: CompTIA Security+ SY0-701 Exam Objectives, Domain 4.3 - Explain various activities associated with vulnerability management (False positives).

Correct Answer: EF

Multi-Factor Authentication (MFA) and patch management are both examples of preventative and technical controls. MFA prevents unauthorized access by requiring multiple forms of verification, and patch management ensures that systems

are protected against vulnerabilities by applying updates. Both of these controls are implemented using technical methods, and they work to prevent security incidents before they occur.

References:

CompTIA Security+ SY0-701 Course Content: Domain 1: General Security Concepts, and Domain 4: Identity and Access Management, which cover the implementation of preventative and technical controls.

Correct Answer: B

Input sanitization is a critical security measure to prevent SQL injection attacks, which occur when an attacker exploits vulnerabilities in a website's input fields to execute malicious SQL code. By properly sanitizing and validating all user

inputs, developers can prevent malicious code from being executed, thereby securing the website against such attacks.

References: CompTIA Security+ SY0-701 study materials, particularly in the domain of web application security and common vulnerability mitigation strategies.