ベスト良質なECCouncil 212-82試験問題Fast2testリアル練習試験 [2025]
重要な試験問題でCertified Cybersecurity Technician一発合格
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質問 # 86
A software team at an MNC was involved in a project aimed at developing software that could detect the oxygen levels of a person without physical contact, a helpful solution for pandemic situations. For this purpose, the team used a wireless technology that could digitally transfer data between two devices within a short range of up to 5 m and only worked in the absence of physical blockage or obstacle between the two devices, identify the technology employed by the software team in the above scenario.
- A. CPS
- B. USB
- C. Infrared
- D. Satcom
正解：C
解説：
Explanation of Correct answer: Infrared is a wireless technology that can digitally
質問 # 87
Jaden, a network administrator at an organization, used the ping command to check the status of a system connected to the organization's network. He received an ICMP error message stating that the IP header field contains invalid information. Jaden examined the ICMP packet and identified that it is an IP parameter problem.
Identify the type of ICMP error message received by Jaden in the above scenario.
- A. Type = 5
- B. Type =12
- C. Type = 8
- D. Type = 3
正解：A
質問 # 88
Rickson, a security professional at an organization, was instructed to establish short-range communication between devices within a range of 10 cm. For this purpose, he used a mobile connection method that employs electromagnetic induction to enable communication between devices. The mobile connection method selected by Rickson can also read RFID tags and establish Bluetooth connections with nearby devices to exchange information such as images and contact lists.
Which of the following mobile connection methods has Rickson used in above scenario?
- A. Cellular communication
- B. NFC
- C. Satcom
- D. ANT
正解：B
解説：
NFC (Near Field Communication) is the mobile connection method that Rickson has used in the above scenario. NFC is a short-range wireless communication technology that enables devices to exchange data within a range of 10 cm. NFC employs electromagnetic induction to create a radio frequency field between two devices. NFC can also read RFID tags and establish Bluetooth connections with nearby devices to exchange information such as images and contact lists . Satcom (Satellite Communication) is a mobile connection method that uses satellites orbiting the earth to provide communication services over long distances. Cellular communication is a mobile connection method that uses cellular networks to provide voice and data services over wireless devices. ANT is a low-power wireless communication technology that enables devices to create personal area networks and exchange data over short distances.
質問 # 89
Matias, a network security administrator at an organization, was tasked with the implementation of secure wireless network encryption for their network. For this purpose, Matias employed a security solution that uses 256-bit Galois/Counter Mode Protocol (GCMP-256) to maintain the authenticity and confidentiality of dat a.
Identify the type of wireless encryption used by the security solution employed by Matias in the above scenario.
- A. WEP encryption
- B. WPA3 encryption
- C. WPA2 encryption
- D. WPA encryption
正解：B
質問 # 90
NetSafe Corp, recently conducted an overhaul of its entire network. This refresh means that the old baseline traffic signatures no longer apply. The security team needs to establish a new baseline that comprehensively captures both normal and suspicious activities. The goal is to ensure real-time detection and mitigation of threats without generating excessive false positives. Which approach should NetSafe Corp, adopt to effectively set up this baseline?
- A. Continuously collect data for a week and define the average traffic pattern as the baseline.
- B. Analyze the last year's traffic logs and predict the baseline using historical data.
- C. Conduct a red team exercise and base the new baseline on the identified threats.
- D. Utilize machine learning algorithms to analyze traffic for a month and generate a dynamic baseline.
正解：D
解説：
* Dynamic Baseline Establishment:
* Machine learning algorithms can analyze vast amounts of network traffic data over an extended period, such as a month, to understand normal and abnormal patterns dynamically.
質問 # 91
Miguel, a professional hacker, targeted an organization to gain illegitimate access to its critical information.
He identified a flaw in the end-point communication that can disclose the target application's data.
Which of the following secure application design principles was not met by the application in the above scenario?
- A. Secure the weakest link
- B. Fault tolerance
- C. Exception handling
- D. Do not trust user input
正解：C
解説：
Exception handling is a secure application design principle that states that the application should handle errors and exceptions gracefully and securely, without exposing sensitive information or compromising the system's functionality. Exception handling can help prevent attackers from exploiting errors or exceptions to gain access to data or resources or cause denial-of-service attacks. In the scenario, Miguel identified a flaw in the end-point communication that can disclose the target application's data, which means that the application did not meet the exception handling principle.
質問 # 92
An FTP server has been hosted in one of the machines in the network. Using Cain and Abel the attacker was able to poison the machine and fetch the FTP credentials used by the admin. You're given a task to validate the credentials that were stolen using Cain and Abel and read the file flag.txt
- A. red@hat
- B. white@hat
- C. hat@red
- D. blue@hat
正解：C
解説：
hat@red is the FTP credential that was stolen using Cain and Abel in the above scenario. FTP (File Transfer Protocol) is a protocol that allows transferring files between a client and a server over a network. FTP requires a username and a password to authenticate the client and grant access to the server . Cain and Abel is a tool that can perform various network attacks, such as ARP poisoning, password cracking, sniffing, etc. Cain and Abel can poison the machine and fetch the FTP credentials used by the admin by intercepting and analyzing the network traffic . To validate the credentials that were stolen using Cain and Abel and read the file flag.txt, one has to follow these steps:
Navigate to the Documents folder of Attacker-1 machine.
Double-click on Cain.exe file to launch Cain and Abel tool.
Click on Sniffer tab.
Click on Start/Stop Sniffer icon.
Click on Configure icon.
Select the network adapter and click on OK button.
Click on + icon to add hosts to scan.
Select All hosts in my subnet option and click on OK button.
Wait for the hosts to appear in the list.
Right-click on 20.20.10.26 (FTP server) and select Resolve Host Name option.
Note down the host name as ftpserver.movieabc.com
Click on Passwords tab.
Click on + icon to add items to list.
Select Network Passwords option.
Select FTP option from Protocol drop-down list.
Click on OK button.
Wait for the FTP credentials to appear in the list.
Note down the username as hat and the password as red
Open a web browser and type ftp://hat:[email protected]
Press Enter key to access the FTP server using the stolen credentials.
Navigate to flag.txt file and open it.
Read the file content.
質問 # 93
A software company is developing a new software product by following the best practices for secure application development. Dawson, a software analyst, is checking the performance of the application on the client's network to determine whether end users are facing any issues in accessing the application.
Which of the following tiers of a secure application development lifecycle involves checking the performance of the application?
- A. Staging
- B. Development
- C. Quality assurance (QA)
- D. Testing
正解：D
質問 # 94
Johnson, an attacker, performed online research for the contact details of reputed cybersecurity firms. He found the contact number of sibertech.org and dialed the number, claiming himself to represent a technical support team from a vendor. He warned that a specific server is about to be compromised and requested sibertech.org to follow the provided instructions. Consequently, he prompted the victim to execute unusual commands and install malicious files, which were then used to collect and pass critical Information to Johnson's machine. What is the social engineering technique Steve employed in the above scenario?
- A. Elicitation
- B. Quid pro quo
- C. Diversion theft
- D. Phishing
正解：B
解説：
Quid pro quo is the social engineering technique that Johnson employed in the above scenario. Quid pro quo is a social engineering method that involves offering a service or a benefit in exchange for information or access. Quid pro quo can be used to trick victims into believing that they are receiving help or assistance from a legitimate source, while in fact they are compromising their security or privacy. In the scenario, Johnson performed quid pro quo by claiming himself to represent a technical support team from a vendor and offering to help sibertech.org with a server issue, while in fact he prompted the victim to execute unusual commands and install malicious files, which were then used to collect and pass critical information to Johnson's machine.
If you want to learn more about social engineering techniques, you can check out these resources:
* [1] A guide to different types of social engineering attacks and how to prevent them:
[https://www.csoonline.com/article/2124681/what-is-social-engineering.html]
* [2] A video that explains how quid pro quo works and how to avoid falling for it:
[https://www.youtube.com/watch?v=3Yy0gZ9xw8g]
* [3] A quiz that tests your knowledge of social engineering techniques and scenarios:
[https://www.proprofs.com/quiz-school/story.php?title=social-engineering-quiz]
質問 # 95
Johnson, an attacker, performed online research for the contact details of reputed cybersecurity firms. He found the contact number of sibertech.org and dialed the number, claiming himself to represent a technical support team from a vendor. He warned that a specific server is about to be compromised and requested sibertech.org to follow the provided instructions. Consequently, he prompted the victim to execute unusual commands and install malicious files, which were then used to collect and pass critical Information to Johnson's machine. What is the social engineering technique Steve employed in the above scenario?
- A. Elicitation
- B. Quid pro quo
- C. Diversion theft
- D. Phishing
正解：B
解説：
Quid pro quo is the social engineering technique that Johnson employed in the above scenario. Quid pro quo is a social engineering method that involves offering a service or a benefit in exchange for information or access. Quid pro quo can be used to trick victims into believing that they are receiving help or assistance from a legitimate source, while in fact they are compromising their security or privacy. In the scenario, Johnson performed quid pro quo by claiming himself to represent a technical support team from a vendor and offering to help sibertech.org with a server issue, while in fact he prompted the victim to execute unusual commands and install malicious files, which were then used to collect and pass critical information to Johnson's machine. If you want to learn more about social engineering techniques, you can check out these resources:
[1] A guide to different types of social engineering attacks and how to prevent them: [https://www.csoonline.com/article/2124681/what-is-social-engineering.html]
[2] A video that explains how quid pro quo works and how to avoid falling for it: [https://www.youtube.com/watch?v=3Yy0gZ9xw8g]
[3] A quiz that tests your knowledge of social engineering techniques and scenarios: [https://www.proprofs.com/quiz-school/story.php?title=social-engineering-quiz]
質問 # 96
Ayden works from home on his company's laptop. During working hours, he received an antivirus software update notification on his laptop. Ayden clicked on the update button; however, the system restricted the update and displayed a message stating that the update could only be performed by authorized personnel. Which of the following PCI-DSS requirements is demonstrated In this scenario?
- A. PCI-DSS requirement no 1.3.1
- B. PCI-DSS requirement no 53
- C. PCI-DSS requirement no 5.1
- D. PCI-DSS requirement no 1.3.2
正解：B
解説：
PCI-DSS requirement no 5.3 is the PCI-DSS requirement that is demonstrated in this scenario. PCI-DSS (Payment Card Industry Data Security Standard) is a set of standards that applies to entities that store, process, or transmit payment card information, such as merchants, service providers, or payment processors. PCI-DSS requires them to protect cardholder data from unauthorized access, use, or disclosure. PCI-DSS consists of 12 requirements that are grouped into six categories: build and maintain a secure network and systems, protect cardholder data, maintain a vulnerability management program, implement strong access control measures, regularly monitor and test networks, and maintain an information security policy. PCI-DSS requirement no 5.3 is part of the category "maintain a vulnerability management program" and states that antivirus mechanisms must be actively running and cannot be disabled or altered by users, unless specifically authorized by management on a case-by-case basis for a limited time period. In the scenario, Ayden works from home on his company's laptop. During working hours, he received an antivirus software update notification on his laptop. Ayden clicked on the update button; however, the system restricted the update and displayed a message stating that the update could only be performed by authorized personnel. This means that his company's laptop has an antivirus mechanism that is actively running and cannot be disabled or altered by users, which demonstrates PCI-DSS requirement no 5.3.
質問 # 97
Kason, a forensic officer, was appointed to investigate a case where a threat actor has bullied certain children online. Before proceeding legally with the case, Kason has documented all the supporting documents, including source of the evidence and its relevance to the case, before presenting it in front of the jury.
Which of the following rules of evidence was discussed in the above scenario?
- A. Understandable
- B. Authentic
- C. Reliable
- D. Admissible
正解：D
解説：
Admissible is the rule of evidence discussed in the above scenario. A rule of evidence is a criterion or principle that determines whether a piece of evidence can be used in a legal proceeding or investigation.
Admissible is a rule of evidence that states that the evidence must be relevant, reliable, authentic, and understandable to be accepted by a court or a jury . Admissible also means that the evidence must be obtained legally and ethically, without violating any laws or rights. In the scenario, Kason has documented all the supporting documents, including source of the evidence and its relevance to the case, before presenting it in front of the jury, which means that he has followed the admissible rule of evidence. Authentic is a rule of evidence that states that the evidence must be original or verifiable as genuine and not altered or tampered with. Understandable is a rule of evidence that states that the evidence must be clear and comprehensible to the court or jury and not ambiguous or confusing. Reliable is a rule of evidence that states that the evidence must be consistent and trustworthy and not based on hearsay or speculation.
質問 # 98
Jordan, a network administrator in an organization, was instructed to identify network-related issues and improve network performance. While troubleshooting the network, he received a message indicating that the datagram could not be forwarded owing to the unavailability of IP-related services (such as FTP or web services) on the target host, which of the following network issues did Jordan find in this scenario?
- A. Network cable is unplugged
- B. Unreachable networks
- C. Destination unreachable message
- D. Time exceeded message
正解：C
解説：
Destination unreachable message is the network issue that Jordan found in this scenario. Destination unreachable message is a type of ICMP message that indicates that the datagram could not be forwarded owing to the unavailability of IP-related services (such as FTP or web services) on the target host. Destination unreachable message can be caused by various reasons, such as incorrect routing, firewall blocking, or host configuration problems1.
References: Destination Unreachable Message
質問 # 99
An IoT device that has been placed in a hospital for safety measures, it has sent an alert command to the server. The network traffic has been captured and stored in the Documents folder of the Attacker Machine-1. Analyze the loTdeviceTraffic.pcapng file and select the appropriate command that was sent by the IoT device over the network.
- A. Tempe_Low
- B. High_Tempe
- C. Temp_High
- D. Low_Tempe
正解：C
解説：
Temp_High is the command that was sent by the IoT device over the network in the above scenario. An IoT (Internet of Things) device is a device that can connect to the internet and communicate with other devices or systems over a network. An IoT device can send or receive commands or data for various purposes, such as monitoring, controlling, or automating processes. To analyze the IoT device traffic file and determine the command that was sent by the IoT device over the network, one has to follow these steps:
Navigate to the Documents folder of Attacker-1 machine.
Double-click on loTdeviceTraffic.pcapng file to open it with Wireshark.
Click on Analyze menu and select Display Filters option.
Enter udp.port == 5000 as filter expression and click on Apply button.
Observe the packets filtered by the expression.
Click on packet number 4 and expand User Datagram Protocol section in packet details pane.
Observe the data field under User Datagram Protocol section.
The data field under User Datagram Protocol section is 54:65:6d:70:5f:48:69:67:68 , which is hexadecimal representation of Temp_High , which is the command that was sent by the IoT device over the network.
質問 # 100
You are the cybersecurity lead for an International financial institution. Your organization offers online banking services to millions of customers globally, and you have recently migrated your core banking system to a hybrid cloud environment to enhance scalability and cost efficiencies.
One evening, after a routine system patch, there is a surge in server-side request forgery (SSRF) alerts from your web application firewall(WAF). Simultaneously, your intrusion detection system (IDS) flags possible attempts to interact with cloud metadata services from your application layer, which could expose sensitive cloud configuration details and API keys. This Is a clear Indication that attackers might be trying to leverage the SSRF vulnerability to breach your cloud infrastructure. Considering the critical nature of your services and the high stakes involved, how should you proceed to tackle this imminent threat while ensuring minimal disruption to your banking customers?
- A. Notify all banking customers about the potential security incident, urging them to change their passwords and monitor their accounts for any unauthorized activity.
- B. Rollback the recent patch immediately and inform the cloud service provider about potential unauthorized access to gauge the extent of vulnerability and coordinate a joint response.
- C. Isolate the affected cloud servers and redirect traffic to backup servers, ensuring continuous service while initiating a deep-dive analysis of the suspicious activities using cloud-native security tools.
- D. Engage with a third-party cybersecurity firm specializing in cloud security to conduct an emergency audit, relying on its expertise to identify the root cause and potential breaches.
正解：C
解説：
In response to the SSRF alerts and potential breach attempts flagged by your IDS, the immediate priority is to contain the threat while maintaining the integrity of your services. Here's a step-by-step approach:
* Isolation and Containment:
* Isolate Affected Servers: Disconnect the affected cloud servers from the network to prevent further unauthorized access or data exfiltration.
* Redirect Traffic: Redirect incoming traffic to backup servers that are not compromised to ensure that online banking services remain available to customers.
* Deep-Dive Analysis:
* Cloud-Native Security Tools: Utilize cloud-native security tools provided by your cloud service provider (such as AWS GuardDuty, Azure Security Center, or Google Cloud Security Command Center) to conduct a thorough investigation of the suspicious activities.
* Examine Network Logs: Analyze network logs to identify the attack vectors and understand the scope of the attack.
* Coordinate with Cloud Provider:
* Joint Response: Inform your cloud service provider about the incident to collaborate on identifying and mitigating the vulnerability. Cloud providers often have additional tools and expertise that can be leveraged during a security incident.
* Remediation:
* Patch and Harden Systems: Once the root cause is identified, apply necessary patches and harden the security posture of your cloud infrastructure to prevent similar attacks in the future.
* Communication:
* Internal Stakeholders: Keep internal stakeholders, including the executive team and legal department, informed about the incident and the steps being taken to address it.
References:
* NIST Computer Security Incident Handling Guide:NIST SP 800-61r2
* AWS Security Best Practices:AWS Documentation
質問 # 101
A web application www.movieabc.com was found to be prone to SQL injection attack. You are given a task to exploit the web application and fetch the user credentials. Select the UID which is mapped to user john in the database table.
Note:
Username: sam
Pass: test
- A. 0
- B. 1
- C. 2
- D. 3
正解：D
解説：
4 is the UID that is mapped to user john in the database table in the above scenario. SQL injection is a type of web application attack that exploits a vulnerability in a web application that allows an attacker to inject malicious SQL statements into an input field, such as a username or password field, and execute them on the database server. SQL injection can be used to bypass authentication, access or modify sensitive data, execute commands, etc. To exploit the web application and fetch the user credentials, one has to follow these steps:
* Open a web browser and type www.movieabc.com
* Press Enter key to access the web application.
* Enter sam as username and test as password.
* Click on Login button.
* Observe that a welcome message with username sam is displayed.
* Click on Logout button.
* Enter sam' or '1'='1 as username and test as password.
* Click on Login button.
* Observe that a welcome message with username admin is displayed, indicating that SQL injection was successful.
* Click on Logout button.
* Enter sam'; SELECT * FROM users; - as username and test as password.
* Click on Login button.
* Observe that an error message with user credentials from users table is displayed.
The user credentials from users table are:
The UID that is mapped to user john is 4.
質問 # 102
Anderson, a security engineer, was Instructed to monitor all incoming and outgoing traffic on the organization's network to identify any suspicious traffic. For this purpose, he employed an analysis technique using which he analyzed packet header fields such as IP options, IP protocols, IP fragmentation flags, offset, and identification to check whether any fields are altered in transit.
Identify the type of attack signature analysis performed by Anderson in the above scenario.
- A. Context-based signature analysis
- B. Composite-signature-based analysis
- C. Content-based signature analysis
- D. Atomic-signature-based analysis
正解：C
質問 # 103
Ryleigh, a system administrator, was instructed to perform a full back up of organizational data on a regular basis. For this purpose, she used a backup technique on a fixed date when the employees are not accessing the system i.e., when a service-level down time is allowed a full backup is taken.
Identify the backup technique utilized by Ryleigh in the above scenario.
- A. Cold backup
- B. Warm backup
- C. Hot backup
- D. Nearline backup
正解：A
解説：
Cold backup is the backup technique utilized by Ryleigh in the above scenario. Cold backup is a backup technique that involves taking a full backup of data when the system or database is offline or shut down. Cold backup ensures that the data is consistent and not corrupted by any ongoing transactions or operations. Cold backup is usually performed on a fixed date or time when the service-level downtime is allowed or scheduled . Nearline backup is a backup technique that involves storing data on a medium that is not immediately accessible, but can be retrieved within a short time. Hot backup is a backup technique that involves taking a backup of data while the system or database is online or running. Warm backup is a backup technique that involves taking a backup of data while the system or database is partially online or running.
質問 # 104
Andre, a security professional, was tasked with segregating the employees' names, phone numbers, and credit card numbers before sharing the database with clients. For this purpose, he implemented a deidentification technique that can replace the critical information in database fields with special characters such as asterisks (*) and hashes (#).
Which of the following techniques was employed by Andre in the above scenario?
- A. Hashing
- B. Masking
- C. Bucketing
- D. Tokenization
正解：B
解説：
Masking is the technique that Andre employed in the above scenario. Masking is a deidentification technique that can replace the critical information in database fields with special characters such as asterisks (*) and hashes (#). Masking can help protect sensitive data from unauthorized access or disclosure, while preserving the format and structure of the original data . Tokenization is a deidentification technique that can replace the critical information in database fields with random tokens that have no meaning or relation to the original data. Hashing is a deidentification technique that can transform the critical information in database fields into fixed-length strings using a mathematical function. Bucketing is a deidentification technique that can group the critical information in database fields into ranges or categories based on certain criteria.
質問 # 105
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