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CompTIA Security +認定は、サイバーセキュリティ分野でキャリアを進めたい人に最適です。この認定は、政府、医療、金融、ITなど、さまざまな業界の雇用主に認められています。また、Certified Information Systems Security Professional（CISSP）やCertified Ethical Hacker（CEH）などの高度なサイバーセキュリティ認定の前提条件でもあります。
CompTIA SY0-601（CompTIA Security+）試験は、サイバーセキュリティの分野でキャリアを追求したい個人の知識とスキルをテストして検証するために設計された認定です。この試験は、サイバーセキュリティ業界で最も尊敬され、名声ある認定の1つとして広く認知されており、世界中の雇用主に高く求められています。
質問 # 99
After a recent vulnerability scan, a security engineer needs to harden the routers within the corporate network.
Which of the following is the most appropriate to disable?
- A. VLANs
- B. Console access
- C. Web-based administration
- D. Routing protocols
正解：B
質問 # 100
Which of the following scenarios describes a possible business email compromise attack?
- A. A service desk employee receives an email from the HR director asking for log-in credentials lo a cloud administrator account
- B. Employees who open an email attachment receive messages demanding payment m order to access files
- C. An employee receives an email with a link to a phishing site that is designed to look like the company's email portal.
- D. An employee receives a gift card request m an email that has an executive's name m the display held to the email
正解：D
解説：
An employee receiving a gift card request in an email that has an executive's name in the display field to the email describes a possible business email compromise attack. Business email compromise (BEC) is a type of phishing attack that targets employees who have access to financial or sensitive information, such as accounting, human resources, or executive staff. The attacker impersonates a trusted person, such as a manager, vendor, or client, and requests a fraudulent payment, wire transfer, gift card purchase, or personal information. The attacker may spoof the email address or display name, use a look-alike domain, or compromise a legitimate email account to make the request seem authentic.
質問 # 101
An incident has occurred in the production environment.
Analyze the command outputs and identify the type of compromise.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
see the answer below.
Explanation
Answer as SQL injection
Graphical user interface, text Description automatically generated
質問 # 102
A security analyst reviews the datacenter access logs for a fingerprint scanner and notices an abundance of errors that correlate with users' reports of issues accessing the facility. Which of the following MOST likely the cause of the cause of the access issues?
- A. False rejection
- B. Attestation
- C. Cross-over error rate
- D. Efficacy rale
正解：A
解説：
where a legitimate user is not recognized. This is also referred to as a Type I error or false non-match rate (FNMR). FRR is measured as a percentage.
質問 # 103
A nationwide company is experiencing unauthorized logins at all hours of the day. The logins appear to originate from countries in which the company has no employees.
Which of the following controls should the company consider using as part of its IAM strategy?
(Choose two.)
- A. Time-based logins
- B. Geofencing
- C. An impossible travel policy
- D. Geolocation
- E. Self-service password reset
- F. A complex password policy
正解：A、B
解説：
Time-based authentication is a special procedure to prove an individual's identity and authenticity on appearance simply by detecting its presence at a scheduled time of day or within a scheduled time interval and on a distinct location.
Geo-Fencing, as the name suggests, lets IT administrators restrict the usage of corporate devices to certain regions such as office premises etc. This is done by creating virtual fences called geo- fence, based on real-world geographical region. Geo-fencing can be ideally used in enterprises with stringent compliance standards which require corporate devices containing sensitive data to remain within the organization's premises at all times. MDM lets you define security policies based on the virtual perimeter created as a geofence, ensuring there is no unauthorized corporate data access.
質問 # 104
A company wants to modify its current backup strategy to minimize the number of backups that would need to be restored in case of data loss. Which of the following would be the BEST backup strategy to implement?
- A. Full backups followed by differential backups
- B. Full backups followed by incremental backups
- C. Delta backups followed by differential backups
- D. Incremental backups followed by delta backups
- E. Incremental backups followed by differential backups
正解：A
質問 # 105
A penetration test revealed that several Linux servers were misconfigured at the file level and access was granted incorrectly. A security analyst is referencing the instructions in the incident response runbook for remediation information. Which of the following is the best command to use to resolve the issue?
- A. dig
- B. chmod
- C. cat
- D. grep
正解：B
質問 # 106
Which of the following conditions impacts data sovereignty?
- A. Rights management
- B. International operations
- C. Healthcare data
- D. Criminal investigations
正解：B
解説：
Data sovereignty refers to the legal concept that data is subject to the laws and regulations of the country in which it is located. International operations can impact data sovereignty as companies operating in multiple countries may need to comply with different laws and regulations. References:
* CompTIA Security+ Study Guide, Exam SY0-601, 4th Edition, Chapter 5
質問 # 107
An attacker replaces a digitally signed document with another version that goes unnoticed Upon reviewing the document's contents the author notices some additional verbiage that was not originally in the document but cannot validate an integrity issue. Which of the following attacks was used?
- A. Collision
- B. Cryptomalware
- C. Hash substitution
- D. Phishing
正解：C
解説：
This type of attack occurs when an attacker replaces a digitally signed document with another version that has a different hash value. The author would be able to notice the additional verbiage, however, since the hash value would have changed, they would not be able to validate an integrity issue.
質問 # 108
A dynamic application vulnerability scan identified code injection could be performed using a web form.
Which of the following will be BEST remediation to prevent this vulnerability?
- A. Utilize a WAF
- B. Deploy MFA
- C. Configure HIPS
- D. Implement input validations
正解：D
解説：
Implementing input validations will prevent code injection attacks by verifying the type and format of user input. References: CompTIA Security+ Study Guide: Exam SY0-601, Chapter 8
質問 # 109
SIMULATION
A company recently added a DR site and is redesigning the network. Users at the DR site are having issues browsing websites.
INSTRUCTIONS
Click on each firewall to do the following:
1. Deny cleartext web traffic.
2. Ensure secure management protocols are used.
3. Resolve issues at the DR site.
The ruleset order cannot be modified due to outside constraints.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
正解：
解説：
Firewall 1:
10.0.0.1/24 - ANY - DNS - PERMIT
10.0.0.1/24 - ANY - HTTPS - PERMIT
ANY - 10.0.0.1/24 - SSH - PERMIT
ANY - 10.0.0.1/24 - HTTPS - PERMIT
ANY - 10.0.0.1/24 - HTTP - DENY
Firewall 2:
10.0.1.1/24 - ANY - DNS - PERMIT
10.0.1.1/24 - ANY - HTTPS - PERMIT
ANY - 10.0.1.1/24 - SSH - PERMIT
ANY - 10.0.1.1/24 - HTTPS - PERMIT
ANY - 10.0.1.1/24 - HTTP - DENY
Firewall 3:
192.168.0.1/24 - ANY - DNS - PERMIT
192.168.0.1/24 - ANY - HTTPS - PERMIT
ANY - 192.168.0.1/24 - SSH - PERMIT
ANY - 192.168.0.1/24 - HTTPS - PERMIT
ANY - 192.168.0.1/24 - HTTP - DENY
質問 # 110
Which of the following is the purpose of a risk register?
- A. To register the risk with the required regulatory agencies
- B. To identify the risk, the risk owner, and the risk measures
- C. To formally log the type of risk mitigation strategy the organization is using
- D. To define the level or risk using probability and likelihood
正解：B
質問 # 111
A company completed a vulnerability scan. The scan found malware on several systems that were running older versions of Windows. Which of the following is MOST likely the cause of the malware infection?
- A. Unsecure root accounts
- B. Default settings
- C. Improper or weak patch management
- D. Open permissions
正解：C
解説：
The reason for this is that older versions of Windows may have known vulnerabilities that have been patched in more recent versions. If a company is not regularly patching their systems, they are leaving those vulnerabilities open to exploit, which can allow malware to infect the systems.
It is important to regularly update and patch systems to address known vulnerabilities and protect against potential malware infections. This is an important aspect of proper security management.
Here is a reference to the CompTIA Security+ certification guide which states that "Properly configuring and maintaining software, including patch management, is critical to protecting systems and data." Reference: CompTIA Security+ Study Guide: SY0-601 by Emmett Dulaney, Chuck Easttom
https://www.wiley.com/en-us/CompTIA+Security%2B+Study+Guide%3A+SY0-601-p-9781119515968
質問 # 112
A company is moving its retail website to a public cloud provider. The company wants to tokenize credit card data but not allow the cloud provider to see the stored credit card information. Which of the following would BEST meet these objectives?
- A. TLS
- B. CASB
- C. WAF
- D. VPN
正解：B
解説：
CASBs have become a vital part of enterprise security, allowing businesses to safely use the cloud while protecting sensitive corporate data.
質問 # 113
An analyst is working on an email security incident in which the target opened an attachment containing a worm. The analyst wants to Implement mitigation techniques to prevent further spread. Which of the following is the best course of action for the analyst to take?
- A. Apply a DLP solution.
- B. Implement network segmentation.
- C. Isolate the infected attachment.
- D. Utilize email content filtering.
正解：C
解説：
Explanation
Isolating the infected attachment is the best course of action for the analyst to take to prevent further spread of the worm. A worm is a type of malware that can self-replicate and infect other devices without human interaction. By isolating the infected attachment, the analyst can prevent the worm from spreading to other devices or networks via email, file-sharing, or other means. Isolating the infected attachment can also help the analyst to analyze the worm and determine its source, behavior, and impact. References:
https://www.security.org/antivirus/computer-worm/
https://sec.cloudapps.cisco.com/security/center/resources/worm_mitigation_whitepaper.html
質問 # 114
A security analyst needs to generate a server certificate to be used for 802.1X and secure RDP connections. The analyst is unsure what is required to perform the task and solicits help from a senior colleague.
Which of the following is the FIRST step the senior colleague will most likely tell the analyst to perform to accomplish this task?
- A. Generate a .pfx file
- B. Create an OCSP
- C. Create a CRL
- D. Generate a CSR
正解：D
解説：
A certificate signing request (CSR) is one of the first steps towards getting your own SSL/TLS certificate. Generated on the same server you plan to install the certificate on, the CSR contains information (e.g. common name, organization, country) the Certificate Authority (CA) will use to create your certificate. It also contains the public key that will be included in your certificate and is signed with the corresponding private key. We'll go into more details on the roles of these keys below.
質問 # 115
The Chief Information Security Officer wants to prevent exfiltration of sensitive information from employee cell phones when using public USB power charging stations. Which of the following would be the BEST solution to Implement?
- A. USB OTG
- B. USB data blocker
- C. DLP
- D. Disabling USB ports
正解：C
解説：
USB data blockers are good, but they're reliant on the employee actually using them. A DLP solution such as MobileIron forces compliance, by locking corporate resources behind a secure application. For example: Users any mobile device policy, such as BYOD, CYOD, and COPE. If they want to access their corporate email on their phone. They will need to sign into the MobileIron application, in order to be granted visibility to their corporate email account. Since the emails are being read/sent through the MobileIron application. Safeguards can be applied even on an outside network-mobile level. If an employee attempts to send a customers social security number, the MobileIron will either block it, alert it, or both, contingent on how the company setup the MobileIron service to work.
質問 # 116
DDoS attacks are causing an overload on the cluster of cloud servers. A security architect is researching alternatives to make the cloud environment respond to load fluctuation in a cost-effective way. Which of the following options BEST fulfils the architect's requirements?
- A. An on-site backup that is deployed and only used when the load increases
- B. Use of multipath by adding more connections to cloud storage
- C. Cloud assets replicated on geographically distributed regions
- D. An orchestration solution that can adjust scalability of cloud assets
正解：D
解説：
Scaling cloud infrastructures can experience lag during the periods of high activity, where other assets have to either be added, or become active. This is the compromise for a cost-effective solution that scales. The company could go for a system that is absolutely overkill on assets at all times, in preparation for those brief peak moments. But this is expensive, and unlikely to be taken by most companies. Only case you would want to use one of these is if you have a sensitive or critical service that MUST remain online. Stock exchange servers, military servers, bank servers, etc. come to mind for this criteria.
質問 # 117
A user forwarded a suspicious email to the security team, Upon investigation, a malicious URL was discovered. Which of the following should be done FIRST to prevent other users from accessing the malicious URL?
- A. Report the website to threat intelligence partners
- B. Set me SIEM to alert for any activity to the web address.
- C. Send out a corporate communication to warn all users Of the malicious email.
- D. Configure the web content filter for the web address.
正解：D
質問 # 118
A company's bank has reported that multiple corporate credit cards have been stolen over the past several weeks. The bank has provided the names of the affected cardholders to the company's forensics team to assist in the cyber-incident investigation.
An incident responder learns the following information:
* The timeline of stolen card numbers corresponds closely with affected users making Internet-based purchases from diverse websites via enterprise desktop PCs.
* All purchase connections were encrypted, and the company uses an SSL inspection proxy for the
* inspection of encrypted traffic of the hardwired network.
* Purchases made with corporate cards over the corporate guest WiFi network, where no SSL inspection occurs, were unaffected.
Which of the following is the MOST likely root cause?
- A. The SSL inspection proxy is feeding events to a compromised SIEM
- B. The adversary has not yet established a presence on the guest WiFi network
- C. The payment providers are insecurely processing credit card charges
- D. HTTPS sessions are being downgraded to insecure cipher suites
正解：C
質問 # 119
A network administrator has been asked to install an IDS to improve the security posture of an organization. Which of the following control types is an IDS?
- A. Physical
- B. Administrative
- C. Detective
- D. Corrective
正解：C
質問 # 120
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Comptia Security+認定は、ITセキュリティ分野でキャリアを始めたばかりの候補者に最適なエントリーレベルの認定です。この認定は、サイバーセキュリティの分野でキャリアを前進させようとしている専門家にも適しています。 SY0-601試験は、ITインフラストラクチャを確保し、セキュリティの脅威を特定して緩和し、サイバー攻撃から保護するためのセキュリティソリューションを実装するために必要なコアの知識とスキルを検証するように設計されています。
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