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>> 100-160 Originale Fragen <<
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204. Frage
A client cannot connect to the corporate web server. You discover a large number of half-open TCP connections to the server.
What should you do?
Antwort: A
Begründung:
The CCST Cybersecurity Study Guide identifies SYN flood attacks as a type of Denial of Service (DoS) attack that exploits the TCP three-way handshake. Attackers send many SYN requests without completing the handshake, leaving the server with numerous half-open connections and exhausting resources.
"A TCP SYN flood attack overwhelms a target server by initiating a high volume of TCP connections but never completing the handshake, resulting in numerous half-open connections that consume system resources and can render the service unavailable." (CCST Cybersecurity, Incident Handling, Denial-of-Service Attacks section, Cisco Networking Academy) A is correct: The proper action is to stop the SYN flood, often using firewalls, intrusion prevention systems, or SYN cookies.
B (switching to HTTPS) does not address the flooding issue.
C is incorrect because the excessive number of half-open connections indicates an attack, not normal operation.
D (flushing DNS cache) is unrelated to this type of attack.
205. Frage
What is a common security threat in which an attacker attempts to overwhelm a targeted system by flooding it with Internet traffic?
Antwort: D
Begründung:
Option 1: Ransomware is a type of malicious software that encrypts a victim's files and demands a ransom in exchange for the decryption key. While it can cause damage to systems, it is not specifically designed to overwhelm a system with Internet traffic.
Option 2: Correct. A Distributed Denial of Service (DDoS) attack is a common security threat in which an attacker attempts to overwhelm a targeted system by flooding it with Internet traffic. This can result in a loss of service availability for legitimate users.
Option 3: Phishing is a type of social engineering attack in which an attacker masquerades as a trustworthy entity to trick individuals into providing sensitive information. It does not involve overwhelming a system with Internet traffic.
Option 4: SQL injection is a type of web application attack in which an attacker manipulates a SQL query to gain unauthorized access to a database. It does not involve overwhelming a system with Internet traffic.
206. Frage
Why is it important to maintain the chain of custody when handling digital evidence?
Antwort: A
Begründung:
Maintaining the chain of custody is crucial to ensure the integrity and admissibility of digital evidence in a legal case. It helps establish that the evidence has not been tampered with or accessed by unauthorized individuals, which ensures its reliability and credibility. By maintaining a strict chain of custody, any potential challenges to the evidence's validity can be effectively addressed by demonstrating that it has been handled in a controlled and secure manner.
207. Frage
Which of the following is NOT a component of an incident response policy?
Antwort: D
Begründung:
Backup and recovery processes are typically part of an organization's data backup and disaster recovery plan, which is separate from the incident response policy. The incident response policy focuses on defining roles, responsibilities, escalation procedures, and incident handling procedures for responding to cybersecurity incidents.
208. Frage
What logging mechanism is commonly used to track and record security-related events and activities in an organization?
Antwort: A
Begründung:
Audit logs are specifically designed to track and record security-related events and activities in an organization. They capture information about user actions, system changes, and resource access attempts, providing a detailed record for forensic analysis, compliance auditing, and security investigation purposes.
209. Frage
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