SY0-701 Exam Dumps - CompTIA Security+ Questions and Answers

Shadow IT refers to employees using software or services without official approval, often introducing security risks due to lack of control, monitoring, or compliance. This can lead to vulnerabilities, data leakage, or policy violations.

Unskilled attacker (A) and hacktivist (B) are threat actor types; supply chain (D) refers to risks from external partners or vendors, not internal unauthorized software usage.

Shadow IT is highlighted in Security Program Management and Threats domains for its risk implications【6:Chapter 16†CompTIA Security+ Study Guide】.

Purchasing insurance is a classic example of risk transfer, where financial risk associated with potential losses is shifted to a third party (the insurer). This strategy does not eliminate the risk but moves the financial burden.

Mitigation (A) reduces risk impact or likelihood through controls, acceptance (B) involves acknowledging the risk without action, and avoidance (C) eliminates the risk by not engaging in the activity.

Risk transfer is a fundamental concept taught in the Risk Management domain of SY0-701【6:Chapter 17†CompTIA Security+ Study Guide】.

Code signing uses digital signatures to verify software authenticity and integrity, ensuring the code has not been tampered with since it was signed by the developer. It helps detect if malware was introduced after delivery.

Static code analysis (B) inspects code for vulnerabilities during development but does not verify delivered binaries. Input validation (C) protects applications at runtime. Secure storage (A) protects stored data, unrelated to software delivery.

Code signing is an essential security control in Software Development Life Cycle and Supply Chain Security【6:Chapter 7†CompTIA Security+ Study Guide】.

This example of a script injection attack would be best mitigated by input sanitization. Input sanitization involves cleaning or filtering user inputs to ensure that they do not contain harmful data, such as malicious scripts. This prevents attackers from executing script-based attacks (e.g., Cross-Site Scripting or XSS).

Nmap command is unrelated to input sanitization, as it is a network scanning tool.

Email phishing attempts require different mitigations, such as user training.

Browser warnings about insecure connections involve encryption protocols, not input validation​

User Behavior Analytics (UBA)is specifically designed to detectanomalous or suspicious behaviorsby users that may indicate insider threats. UBA toolsestablish a baseline of normalbehaviorfor users and alert security teams when deviations occur (e.g., accessing sensitive files at odd hours, downloading large volumes of data, etc.).

Malicious insiders often bypass perimeter defenses like firewalls or IDS/IPS systems because they arelegitimate users. UBA offersvisibility into internal behavior patterns, which is essential for detecting these threats.

The correct answer is Acquisition process because supply chain compromise risks originate before systems ever enter the organization’s environment. Within the Security+ SY0-701 objectives, supply chain risk management is a core element of security governance and third-party risk oversight. Reviewing the acquisition process allows an organization to evaluate how vendors are selected, how hardware integrity is validated, and what security assurances are required before purchase and delivery.

The acquisition process includes vendor due diligence, contract requirements, sourcing controls, and verification steps that ensure hardware has not been tampered with, preloaded with malicious firmware, or altered during manufacturing or transit. The SY0-701 study guide emphasizes that organizations must assess supplier trustworthiness, require secure delivery practices, and define security expectations in contracts to reduce the risk of compromised components entering the environment. If the acquisition process is weak, downstream controls become reactive rather than preventive.

Option A, sanitization procedure, applies to data destruction and system disposal, not newly acquired servers. Option C, change management, governs how modifications are introduced into existing systems and does not address risks introduced during procurement. Option D, asset tracking, helps maintain inventory visibility once assets are received but does not prevent compromised hardware from being introduced in the first place.

By reviewing and strengthening the acquisition process first, the company can implement preventive controls such as approved vendor lists, chain-of-custody requirements, hardware integrity checks, and acceptance testing. These measures align with SY0-701 principles of reducing risk at the earliest possible stage and enforcing accountability across third-party relationships.

In summary, supply chain compromise is best mitigated by addressing risks at procurement. The acquisition process is the foundational control point where organizations can limit exposure before servers are deployed into production environments.

A buffer overflow is a vulnerability that occurs when an application writes more data to a memory buffer than it can hold, causing the excess data to overwrite adjacent memory locations. A register is a small storage area in the CPU that holds temporary data or instructions. An attacker can exploit a buffer overflow to overwrite a register with a malicious address that points to a shellcode, which is a piece of code that gives the attacker control over the system. By doing so, the attacker can bypass the normal execution flow of the application and execute arbitrary commands.

The best answer is A. Ensure the firewall data plane moves to fail-closed mode.

The key requirement is that the company prioritizes confidentiality over availability. In a failure or security event, a fail-closed firewall blocks traffic rather than allowing traffic to continue through an untrusted or degraded state.

This choice protects sensitive business data, even if it temporarily interrupts transactions.

Why the other options are incorrect:

B. Implement a deny-all rule as the last firewall ACL rule.This is a standard best practice, but it does not specifically address behavior during a security event.

C. Prioritize business-critical application traffic through the firewall.This emphasizes availability and performance, not confidentiality.

D. Configure rate limiting between the firewall interfaces.Rate limiting can help with traffic control, but it is not the best match for the stated priority.

From a Security+ standpoint, when confidentiality is more important than uptime, fail closed is the correct choice.

CVSS (Common Vulnerability Scoring System) is used to assign severity scores to security vulnerabilities, allowing organizations to assess risk and prioritize remediation efforts. By using CVSS scores, teams can address the most critical vulnerabilities first, based on the potential impact.

 A cold site is a type of backup data center that has the necessary infrastructure to support IT operations, but does not have any pre-configured hardware or software. A cold site is the cheapest option among the backup data center types, but it also has the longest recovery time objective (RTO) and recovery point objective (RPO) values. A cold site is suitable for scenarios where the cost-benefit is the primary requirement and the RTO and RPO values are not very stringent. A cold site can take up to two days or more to restore the normal operations after a disaster. References = CompTIA Security+ SY0-701 Certification Study Guide, page 387; Backup Types – SY0-601 CompTIA Security+ : 2.5, video at 4:50.

To identify the exactcommand or input usedduring a SQL injection attack, theapplication log (B)is the most relevant. It records inputs, errors, and processing activities within the application layer.

UnderDomain 2.1, CompTIA emphasizes reviewingapplication logsto detect indicators of malicious activity, includingweb application attackslike SQL injection.

Detailed Explanation:SSH tunneling can secure the unencrypted protocol by encapsulating traffic in an encrypted tunnel. Segmentation isolates the legacy system, reducing the risk of unauthorized access. Reference: CompTIA Security+ SY0-701 Study Guide, Domain 2: Threats, Section: " Compensating Controls for Legacy Systems " ​​.

Side loading is the process of installing applications from unofficial sources, often bypassing standard app stores. This increases the risk of installing malicious software, such as a rootkit, which is a type of malware designed to provide persistent privileged access while hiding its presence.