Ciscoは2026年最新の100-160テスト解説（更新されたのは360問があります)
100-160試験問題集を提供していますCisco問題
Cisco 100-160 認定試験の出題範囲：
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質問 # 209
Which of the following is an industry-standard tool commonly used for vulnerability scanning?
- A. Nessus
- B. MacAfee Endpoint Security
- C. Apache HTTP Server
- D. Microsoft Excel
正解：A
解説：
Nessus is an industry-standard tool widely used for vulnerability scanning and assessment. It enables organizations to proactively identify and assess potential vulnerabilities in their network infrastructure, operating systems, and applications. Nessus offers a comprehensive set of features, including asset discovery, vulnerability detection, and detailed reporting, making it a popular choice among cybersecurity professionals.
質問 # 210
What is the role of a firewall in secure access technologies?
- A. To encrypt data
- B. To prevent unauthorized access
- C. To monitor network traffic
- D. To authenticate users
正解：B
解説：
A firewall is a network security device that is used to filter incoming and outgoing network traffic based on predetermined security rules. Its primary role is to prevent unauthorized access to a network or system by blocking potentially harmful or malicious traffic.
質問 # 211
Which of the following best defines vulnerability management?
- A. An approach to monitor and analyze network traffic for security threats.
- B. A method to detect and respond to unauthorized access attempts on a system.
- C. A process of identifying, classifying, and mitigating vulnerabilities in a system or network.
- D. A technique used to encrypt data while in transit over a network.
正解：C
解説：
Vulnerability management is the practice of systematically identifying, categorizing, and addressing vulnerabilities in a system or network. It involves activities such as vulnerability scanning, vulnerability assessment, and vulnerability remediation. The goal of vulnerability management is to minimize the risk of potential exploits by proactively identifying and addressing security weaknesses.
質問 # 212
Which of the following options is an example of a cybersecurity news and subscription service?
- A. Email filtering software
- B. Firewall
- C. VPN (Virtual Private Network)
- D. SIEM (Security Information and Event Management) system
正解：D
解説：
A SIEM system is an example of a cybersecurity news and subscription service. It collects and analyzes security event data from various sources and provides real-time alerts and reports to enhance threat detection and management. It provides valuable insights into the cybersecurity landscape, including news and updates related to security incidents, vulnerabilities, and emerging threats.
質問 # 213
How does a honeypot enhance network security?
- A. It detects and prevents identified threats through real-time packet inspection.
- B. It monitors network traffic and sends alerts when potential threats are detected.
- C. It acts as a decoy and diverts malicious traffic away from important systems.
- D. It isolates external-facing services from the Internet and protects them from attack.
正解：C
解説：
According to the Cisco Certified Support Technician (CCST) Cybersecurity Study Guide, a honeypot is a security mechanism that appears to be a legitimate system or resource but is intentionally made vulnerable to attract attackers. Its purpose is not to serve legitimate users but to detect, study, and sometimes divert malicious activity.
"A honeypot is a decoy system or service designed to attract and engage attackers. By simulating a target of interest, it allows security teams to monitor attack methods, collect intelligence, and sometimes divert threats away from production systems. Honeypots do not prevent attacks but help in identifying them and understanding adversary tactics." (CCST Cybersecurity, Basic Network Security Concepts, Honeypots and Honey Nets section, Cisco Networking Academy) In this context:
Option A describes an IDS (Intrusion Detection System), not a honeypot.
Option C refers to a DMZ (Demilitarized Zone), not a honeypot.
Option D describes an IPS (Intrusion Prevention System).
Option B correctly identifies a honeypot's role as a decoy to divert or engage attackers.
質問 # 214
Which of the following is a limitation of vulnerability databases?
- A. They may not include vulnerabilities discovered by malicious actors.
- B. They provide real-time information on emerging threats.
- C. They require minimal human effort for maintaining and updating.
- D. They cover all known vulnerabilities in every software and hardware.
正解：A
解説：
Vulnerability databases are an essential resource for cybersecurity professionals to stay informed about known vulnerabilities. However, these databases primarily rely on information shared by vendors, security researchers, and ethical hackers. Malicious actors, who may discover vulnerabilities independently, may not disclose them in such databases. Therefore, it is crucial to adopt a well-rounded approach to vulnerability management and consider potential undisclosed vulnerabilities.
質問 # 215
Which of the following is a common security control measure used to protect applications from unauthorized access?
- A. Data anonymization
- B. File compression
- C. Biometric authentication
- D. Hard disk formatting
正解：C
解説：
Biometric authentication is a security control measure that uses physical or behavioral characteristics, such as fingerprint scanning or facial recognition, to verify a user's identity. By implementing biometric authentication, organizations can add an extra layer of protection to their applications and control access to sensitive data. File compression, data anonymization, and hard disk formatting are not directly related to application security measures.
質問 # 216
Which protocol uses encryption for secure remote access to network resources?
- A. Internet Protocol Security (IPSec)
- B. Secure Shell (SSH)
- C. Point-to-Point Protocol (PPP)
- D. Wireless Equivalent Privacy (WEP)
正解：B
解説：
Secure Shell (SSH) is a cryptographic network protocol that provides secure remote access and control of network resources. It employs encryption to protect data exchanged between the client and the server, ensuring the confidentiality and integrity of the communication. SSH is commonly used for remote administration and secure file transfers.
質問 # 217
What is the main purpose of a disaster recovery plan?
- A. Minimizing the impact of disasters
- B. Recovering data after a disaster
- C. Identifying potential threats and vulnerabilities
- D. Preventing disasters from occurring
正解：B
解説：
The primary purpose of a disaster recovery plan is to ensure that data, systems, and operations can be restored in a timely manner following a disaster. It focuses on recovering critical resources and minimizing downtime to resume normal business operations as quickly as possible.
質問 # 218
Which of the following is a common security threat that targets web applications?
- A. DNS poisoning
- B. SQL injection
- C. Distributed Denial of Service (DDoS)
- D. Man-in-the-middle attack
正解：B
解説：
Option 1: Correct: SQL injection is a common security threat that targets web applications. It involves inserting malicious SQL code into input fields to manipulate the application's database and gain unauthorized access or retrieve sensitive information.
Option 2: Incorrect: DNS poisoning is not a common security threat that targets web applications. It involves corrupting the DNS cache and redirecting users to malicious websites.
Option 3: Incorrect: Man-in-the-middle attack is not a common security threat that specifically targets web applications. It involves intercepting communication between two parties and can affect various types of network communication.
Option 4: Incorrect: Distributed Denial of Service (DDoS) is not a common security threat that targets web applications specifically. It involves overwhelming a target system with a flood of traffic from multiple sources, rendering it inaccessible.
質問 # 219
Which endpoint security mechanism is used to secure data transmitted between the endpoint and the network?
- A. Encryption
- B. Firewall
- C. Intrusion Detection System (IDS)
- D. Antivirus
正解：A
解説：
Encryption is the mechanism used to secure data transmitted between the endpoint and the network. By encrypting the data, it becomes unreadable to unauthorized parties, ensuring the confidentiality and integrity of the information being transmitted. Encryption transforms the data into a ciphertext, which can only be decrypted back into its original form using the proper encryption key. This helps protect sensitive and confidential data from interception and unauthorized access during transmission over the network.
質問 # 220
Which of the following network technologies is commonly used to connect devices within a local area network (LAN)?
- A. VPN
- B. Ethernet
- C. DSL
- D. Wi-Fi
正解：B
解説：
Ethernet is a widely used network technology for connecting devices within a local area network (LAN). It provides a physical and data link layer protocol for wired connections, allowing devices to communicate over a LAN using Ethernet cables. Ethernet has various speeds and standards, including Ethernet over twisted pair (such as Cat 5e or Cat 6 cables), fiber optic cables, and other mediums.
質問 # 221
Which of the following strategies is recommended for managing communication proactively after an event?
- A. Keeping antivirus software up to date
- B. Conducting a forensic analysis
- C. Regularly backing up data
- D. Implementing multi-factor authentication
正解：B
解説：
Conducting a forensic analysis is a recommended strategy for managing communication proactively after an event. When a security incident occurs, it is essential to investigate the nature of the incident, determine its impact, and identify the root cause. Conducting a forensic analysis helps uncover valuable information such as the method of attack, affected systems, and potential weaknesses that can be addressed to prevent similar incidents in the future. This proactive approach facilitates the development of a more robust security posture.
質問 # 222
Which of the following represents a technique used in Classless Inter-Domain Routing (CIDR)?
- A. Variable-length subnet masks
- B. Binary notation for IP addresses
- C. Compressed MAC addresses
- D. 32-bit IP addresses
正解：A
解説：
Classless Inter-Domain Routing (CIDR) is a technique used to allocate and manage IP addresses more efficiently. It involves using variable-length subnet masks (VLSMs), which allow the network to have subnets of different sizes. VLSMs provide flexibility in allocating IP addresses by allowing the network administrator to choose the appropriate number of network and host bits based on the network requirements.
質問 # 223
Which of the following is an essential component of information security assessments?
- A. All of the above
- B. Penetration testing
- C. Incident response planning
- D. User training
正解：A
解説：
Information security assessments involve assessing the security posture of an IT system. Penetration testing, which involves simulating attacks to identify vulnerabilities, is an important component of such assessments. Additionally, user training is vital because human error or lack of awareness can often be a weak point in security. Understanding how to recognize and respond to potential threats is crucial. Lastly, incident response planning is essential to ensure that the organization is prepared to handle and mitigate any security incidents effectively. Therefore, all the options mentioned in the
質問 # 224
Which protocol is used to assign IP addresses to devices on a network?
- A. DHCP
- B. UDP
- C. TCP
- D. ICMP
正解：A
解説：
DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses dynamically to devices on a network. Instead of manually configuring IP addresses on each device, DHCP allows for automated IP address allocation, making network administration more efficient.
質問 # 225
What is ransomware?
- A. A software program that is designed to damage, disrupt, or gain unauthorized access to a computer system.
- B. A form of cyber attack that attempts to gain unauthorized access to a network.
- C. A technique used by attackers to obtain sensitive information through deception.
- D. Malicious software that encrypts files on a victim's computer and demands ransom for their release.
正解：D
解説：
Ransomware is a type of malware that encrypts files on a victim's computer or network and then demands a ransom payment in exchange for the decryption key. It is a form of extortion and can cause significant damage and disruption to individuals and organizations.
質問 # 226
What is the primary goal of vulnerability management?
- A. Eliminating all vulnerabilities in a system
- B. Minimizing the impact of potential vulnerabilities
- C. Increasing network throughput
- D. Preventing all cyber attacks
正解：B
解説：
The primary goal of vulnerability management is to identify and prioritize vulnerabilities in a system or network and take appropriate measures to minimize their impact. It involves implementing patch management, deploying security controls, and establishing incident response procedures.
質問 # 227
Which of the following statements best describes the impact of compliance frameworks on incident handling?
- A. Compliance frameworks focus primarily on prevention, not incident handling.
- B. Compliance frameworks have no impact on incident handling.
- C. Compliance frameworks establish standards and guidelines for incident handling.
- D. Compliance frameworks are only relevant for incident response teams.
正解：C
解説：
Compliance frameworks, such as the Payment Card Industry Data Security Standard (PCI DSS) or the Health Insurance Portability and Accountability Act (HIPAA), play a crucial role in incident handling. These frameworks define requirements and best practices for various aspects of cybersecurity, including incident response. They outline procedures and guidelines to be followed during incident handling and help organizations establish an effective incident response plan. Compliance frameworks ensure that incidents are handled according to industry standards and regulatory requirements, helping organizations mitigate risks, minimize damages, and maintain compliance with relevant laws and regulations.
質問 # 228
What are anomalies in the context of cybersecurity?
- A. Malware that infects a system and causes it to malfunction
- B. Unusual behaviors or patterns that deviate from the norm
- C. External threats that aim to breach an organization's defenses
- D. Security vulnerabilities in computer networks
正解：B
解説：
Anomalies in the context of cybersecurity refer to unusual behaviors or patterns that deviate from the norm. These anomalies can indicate potential security breaches, malicious activities, or abnormal system behaviors. By detecting and analyzing anomalies, cybersecurity professionals can identify potential threats and take appropriate actions to mitigate them. Anomaly detection is an important aspect of cybersecurity to ensure the overall safety and protection of computer systems and networks.
質問 # 229
An administrator wants to ensure that any files downloaded from the internet are automatically scanned for malicious code before execution. Which security control should be implemented?
- A. Anti-malware with real-time protection
- B. Host-based firewall
- C. Patch management system
- D. VPN client
正解：A
解説：
According to the CCST Cybersecurity course, anti-malware solutions with real-time protection scan files as they are downloaded or opened, blocking malicious code before it runs.
"Real-time protection automatically inspects files, applications, and scripts as they are accessed or downloaded, preventing execution of malicious code." (CCST Cybersecurity, Endpoint Security Concepts, Malware Protection section, Cisco Networking Academy)
質問 # 230
Which of the following password policies is considered a best practice?
- A. Enforcing a minimum password length and complexity requirements
- B. Storing passwords in plain text format
- C. Allowing users to set easily guessable passwords
- D. Requiring passwords to be changed every 5 years
正解：A
解説：
Enforcing a minimum password length and complexity requirements is considered a best practice for password policies. This helps to ensure that passwords are not easily guessable and increases the security of user accounts.
質問 # 231
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