CompTIA CS0-002 Exam Practice Test Instant Access

Question 1

A cybersecurity analyst inspects DNS logs on a regular basis to identify possible IOCs that are not triggered by known signatures. The analyst reviews the following log snippet:

Which of the following should the analyst do next based on the information reviewed?

AThe analyst should disable DNS recursion.

BThe analyst should block requests to no---thanks. invalid.

CThe analyst should disconnect host 192.168.1.67.

DThe analyst should sinkhole 102.100.20.20.

EThe analyst should disallow queries to the 8.8.8.8 resolver.
A) The analyst should disable DNS recursion is not correct.DNS recursion is a process where a DNS server queries other DNS servers on behalf of a client until it finds the authoritative answer for a domain name2. Disabling DNS recursion would prevent the DNS server from resolving any domain names that are not in its cache or zone files, which would affect the normal functionality of the network and the internet access of the clients.
C) The analyst should disconnect host 192.168.1.67 is not correct. Disconnecting host 192.168.1.67 would stop the communication with the malicious domain, but it would also disrupt the legitimate activities of the host and its user. Moreover, disconnecting the host would not remove the malware or root cause of the compromise, and it would not prevent the host from reconnecting to the malicious domain once it is online again.
D) The analyst should sinkhole 102.100.20.20 is not correct.Sinkholing is a technique that redirects malicious or unwanted traffic to a controlled destination, such as a fake or isolated server3. Sinkholing 102.100.20.20 would prevent the communication with the malicious domain, but it would also require access and control over the public resolver 8.8.8.8, which is not owned or managed by the analyst or the company.
E) The analyst should disallow queries to the 8.8.8.8 resolver is not correct. Disallowing queries to the 8.8.8.8 resolver would prevent the communication with the malicious domain, but it would also affect the resolution of other legitimate domain names that are not in the local DNS server's cache or zone files.
1:DNS Tunneling: how DNS can be (ab)used by malicious actors2:What Is DNS Recursion?3:What Is a Sinkhole Attack?

Answer : B

The correct answer is B. The analyst should block requests to no-thanks.invalid. The log snippet shows a DNS query from host 192.168.1.67 to the public resolver 8.8.8.8 for the domain name no-thanks.invalid, which is resolved to the IP address 102.100.20.20.This is a possible indicator of compromise (IOC), as no-thanks.invalid is a known malicious domain that is used by attackers to exfiltrate data or execute commands on compromised hosts1. The analyst should block requests to this domain to prevent further communication with the attacker's server and investigate the host 192.168.1.67 for signs of infection.

Question 2

An organization is required to be able to consume multiple threat feeds simultaneously and to provide actionable intelligence to various teams. The organization would also like to be able to leverage the intelligence to enrich security event dat

a. Which of the following functions would most likely help the security analyst meet the organization's requirements?

AVulnerability management

BRisk management

CDetection and monitoring

DIncident response
A) Vulnerability management is not correct. Vulnerability management is a function that involves identifying, assessing, and mitigating the weaknesses or flaws in systems, applications, or networks that could be exploited by attackers. Vulnerability management can help the organization to reduce its attack surface and prevent potential breaches, but it does not directly involve consuming multiple threat feeds simultaneously or providing actionable intelligence to various teams.
B) Risk management is not correct. Risk management is a function that involves identifying, analyzing, and evaluating the risks that could affect the organization's assets, operations, or objectives. Risk management can help the organization to prioritize and implement appropriate controls or mitigation strategies to reduce the likelihood or impact of the risks, but it does not directly involve consuming multiple threat feeds simultaneously or providing actionable intelligence to various teams.
D) Incident response is not correct. Incident response is a function that involves preparing for, detecting, containing, analyzing, and recovering from security incidents that compromise the confidentiality, integrity, or availability of the organization's assets or operations. Incident response can help the organization to minimize the damage and restore normal operations as quickly as possible, but it does not directly involve consuming multiple threat feeds simultaneously or providing actionable intelligence to various teams.
1:Cybersecurity Analyst+ - CompTIA

Answer : C

The correct answer is C. Detection and monitoring. Detection and monitoring is a function that involves collecting, analyzing, and correlating data from various sources, such as threat feeds, logs, alerts, or events, to identify and respond to potential or ongoing threats. Detection and monitoring can help the organization to consume multiple threat feeds simultaneously and to provide actionable intelligence to various teams, such as security operations center (SOC) analysts, incident responders, or threat hunters.Detection and monitoring can also help the organization to leverage the intelligence to enrich security event data, such as adding context, severity, or priority to the events1.

Question 3

A security analyst implemented a solution that would analyze the attacks that the organization's firewalls failed to prevent. The analyst used the existing systems to enact the solution and executed the following command:

$ sudo nc ---1 ---v ---e maildaemon.py 25 > caplog.txt

Which of the following solutions did the analyst implement?

ALog correlation

BCrontab mail script

CSinkhole

DHoneypot
A) Log correlation is not correct. Log correlation is a process of analyzing and correlating data from multiple sources, such as firewalls, servers, applications, or devices, to identify patterns, trends, or anomalies. Log correlation can help to improve security visibility, detection, and response, but it does not describe the solution that the analyst implemented.
B) Crontab mail script is not correct. Crontab is a tool that allows users to schedule commands or scripts to run at specified times or intervals on a Linux system. A mail script is a script that can send or receive email messages using a mail server. A crontab mail script could be used to automate email tasks, such as sending reports or alerts, but it does not describe the solution that the analyst implemented.
C) Sinkhole is not correct. A sinkhole is a technique that redirects malicious or unwanted traffic to a controlled destination, such as a fake or isolated server. A sinkhole can help to prevent or mitigate the impact of attacks, such as botnets, malware, or phishing, by blocking or capturing the traffic. However, a sinkhole does not describe the solution that the analyst implemented.
1:CompTIA CySA+ Exam: Implementing a Firewall Analysis Solution

Answer : D

The correct answer is D. Honeypot. A honeypot is a security mechanism designed to detect and deflect attempts at unauthorized use of information systems. In this case, the analyst has set up a system to listen on a network port that is commonly used for email traffic. The purpose of this honeypot is to attract attackers and allow the security analyst to observe their behavior and tactics.By monitoring the traffic that is captured in the caplog.txt file, the analyst can identify attacks that were not blocked by the organization's firewalls1.

Question 4

An analyst is coordinating with the management team and collecting several terabytes of data to analyze using advanced mathematical techniques in order to find patterns and correlations in events and activities. Which of the following describes what the analyst is doing?

AData visualization

BSOAR

CMachine learning

DSCAP
A) Data visualization is not correct. Data visualization is the process of presenting data in a graphical or pictorial format, such as charts, graphs, maps, or dashboards.Data visualization can help to communicate information, insights, or trends more effectively and intuitively than using text or numbers alone2.
B) SOAR is not correct. SOAR stands for Security Orchestration, Automation, and Response, and it is a solution that combines various tools and processes to improve the efficiency and effectiveness of security operations.SOAR can help to automate tasks, integrate systems, coordinate actions, and respond to incidents faster and more consistently3.
D) SCAP is not correct. SCAP stands for Security Content Automation Protocol, and it is a set of standards and specifications that enable the automated assessment, measurement, and reporting of the security posture of systems and networks. SCAP can help to ensure compliance, identify vulnerabilities, and remediate issues.
1:What Is Machine Learning?2:What Is Data Visualization?3:What Is Security Orchestration, Automation, and Response (SOAR)?: [What Is Security Content Automation Protocol (SCAP)?]

Answer : C

The correct answer is C. Machine learning. Machine learning is a branch of artificial intelligence that uses advanced mathematical techniques, such as statistics, algorithms, and linear algebra, to analyze large amounts of data and find patterns and correlations in events and activities.Machine learning can help to automate tasks, improve decision making, and enhance security by detecting anomalies, threats, or trends1.

Question 5

A network appliance manufacturer is building a new generation of devices and would like to include chipset security improvements. The management team wants the security team to implement a method to prevent security weaknesses that could be reintroduced by downgrading the firmware version on the chipset. Which of the following would meet this objective?

AUEFI

BA hardware security module

CeFUSE

DCertificate signed updates
A) UEFI is not correct. UEFI stands for Unified Extensible Firmware Interface, and it is a standard that defines the software interface between an operating system and a platform firmware. UEFI can provide security features, such as secure boot, which verifies the integrity of the boot loader and prevents unauthorized code execution during the boot process.However, UEFI does not prevent security weaknesses that could be reintroduced by downgrading the firmware version on the chipset2.
B) A hardware security module is not correct. A hardware security module (HSM) is a physical device that provides secure storage and processing of cryptographic keys and operations. An HSM can protect sensitive data and transactions, such as encryption, decryption, signing, or verification, from unauthorized access or tampering.However, an HSM does not prevent security weaknesses that could be reintroduced by downgrading the firmware version on the chipset3.
D) Certificate signed updates are not correct. Certificate signed updates are a method of ensuring the authenticity and integrity of firmware updates by using digital certificates and signatures. Certificate signed updates can prevent malicious or corrupted firmware updates from being installed on the chipset, but they do not prevent security weaknesses that could be reintroduced by downgrading the firmware version on the chipset.
1:What Is an eFUSE?2:What Is UEFI?3:What Is a Hardware Security Module (HSM)?

Answer : C

The correct answer is C. eFUSE. An eFUSE is a type of electronic fuse that can be programmed to permanently alter the functionality or configuration of a chipset. An eFUSE can be used to prevent security weaknesses that could be reintroduced by downgrading the firmware version on the chipset, by locking the firmware to a specific version or preventing unauthorized modifications.An eFUSE can also provide other benefits, such as anti-tampering, anti-counterfeiting, and device authentication1.

Question 6

An organization wants to implement controls for protecting private information at rest. Which of the following would meet the organization's need?

ANon-disclosure agreements

BRetention policies

CData minimization

DEncryption

Answer : D

The correct answer is D. Encryption. Encryption is a technical control that transforms data into an unreadable format using a secret key or algorithm. Encryption can protect data at rest by preventing unauthorized access, modification, or exfiltration of the data.Encryption can also protect data in transit and in use, depending on the type and level of encryption applied1.

Question 7

A company is setting up a small, remote office to support five to ten employees. The company's home office is in a different city, where the company uses a cloud service provider for its business applications and a local server to host its dat

a. To provide shared access from the remote office to the local server and the business applications, which of the following would be the easiest and most secure solution?

AUse a VPC to host the company's data and keep the current solution for the business applications.

BUse a new server for the remote office to host the data and keep the current solution for the business applications.

CUse a VDI for the home office and keep the current solution for the business applications.

DUse a VPN to access the company's data in the home office and keep the current solution for the business applications.

Answer : D

The correct answer is D. Use a VPN to access the company's data in the home office and keep the current solution for the business applications. A virtual private network (VPN) is a technology that creates a secure and encrypted connection over a public network, such as the internet. A VPN can allow users to access resources on a remote network, such as a server, as if they were on the same local network.A VPN can provide shared access from the remote office to the company's data in the home office, while maintaining security and privacy1.

CompTIA CS0-002 CompTIA Cybersecurity Analyst (CySA+) Exam Practice Test