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Questions and Answers
What is a back door in software typically created for?
What is a back door in software typically created for?
- To increase security measures
- To allow unauthorized access (correct)
- To improve user interface
- To enhance device performance
What does privilege escalation allow an attacker to do?
What does privilege escalation allow an attacker to do?
- Improve system security protocols
- Increase network bandwidth
- Access public data only
- Gain unauthorized access to restricted resources (correct)
Which of the following is NOT a type of denial of service (DoS) attack?
Which of the following is NOT a type of denial of service (DoS) attack?
- SYN flood
- Ping flood attack
- Smurf attack
- DNS poisoning (correct)
What category does a man-in-the-middle attack belong to?
What category does a man-in-the-middle attack belong to?
Which of the following describes a SYN flood attack?
Which of the following describes a SYN flood attack?
What is the primary characteristic of a Distributed Denial of Service (DDoS) attack?
What is the primary characteristic of a Distributed Denial of Service (DDoS) attack?
What type of attack uses the ping utility to send numerous echo request messages?
What type of attack uses the ping utility to send numerous echo request messages?
In a SYN flood attack, what is exploited during the connection establishment process?
In a SYN flood attack, what is exploited during the connection establishment process?
What is a key feature of the Smurf attack?
What is a key feature of the Smurf attack?
Which type of attack records transmitted data without altering it?
Which type of attack records transmitted data without altering it?
What is the result of a replay attack?
What is the result of a replay attack?
How does a SYN flood attack affect a target device?
How does a SYN flood attack affect a target device?
What is a result of using zombie computers in DDoS attacks?
What is a result of using zombie computers in DDoS attacks?
What is the main difference between active and passive attacks in the context of interception?
What is the main difference between active and passive attacks in the context of interception?
What makes identifying and blocking the source of a DDoS attack extremely challenging?
What makes identifying and blocking the source of a DDoS attack extremely challenging?
What does ARP poisoning primarily alter in a network?
What does ARP poisoning primarily alter in a network?
Which of the following is NOT a method to prevent DNS poisoning?
Which of the following is NOT a method to prevent DNS poisoning?
What is the main purpose of the Address Resolution Protocol (ARP)?
What is the main purpose of the Address Resolution Protocol (ARP)?
What is a likely consequence of successfully executing an ARP poisoning attack?
What is a likely consequence of successfully executing an ARP poisoning attack?
Which location is NOT typically involved in DNS poisoning?
Which location is NOT typically involved in DNS poisoning?
What type of attack can result from ARP poisoning?
What type of attack can result from ARP poisoning?
Which of these commonly exploited vulnerabilities can lead to privilege escalation in a network?
Which of these commonly exploited vulnerabilities can lead to privilege escalation in a network?
What is a primary indication of DNS poisoning?
What is a primary indication of DNS poisoning?
In the context of network security, what does a Denial of Service (DoS) attack aim to achieve?
In the context of network security, what does a Denial of Service (DoS) attack aim to achieve?
What is one effective strategy to mitigate DNS poisoning?
What is one effective strategy to mitigate DNS poisoning?
What is a default account in a network device context?
What is a default account in a network device context?
Which of the following accurately describes a backdoor in a network device?
Which of the following accurately describes a backdoor in a network device?
What is a common target for attackers in a network device?
What is a common target for attackers in a network device?
Privilege escalation in networking refers to what?
Privilege escalation in networking refers to what?
Which method can NOT be used to create a backdoor on a network device?
Which method can NOT be used to create a backdoor on a network device?
What is a significant risk of keeping default accounts active on network devices?
What is a significant risk of keeping default accounts active on network devices?
Which of the following best describes the purpose of a default account?
Which of the following best describes the purpose of a default account?
What could be a major consequence of privilege escalation in a network?
What could be a major consequence of privilege escalation in a network?
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Study Notes
Network Vulnerabilities
- Default accounts are created automatically by the device
- They are often used for initial setup and installation, but should be deleted after
- Back doors are accounts created secretly without administrator knowledge, allowing for remote access
- They can be created by infection or by a software programmer
- Privilege escalation exploits a vulnerability in a software to gain access to restricted resources
Network Attacks
- Denial of service (DoS) attacks consume network resources to prevent legitimate requests from being processed
- Interception includes man-in-the-middle that intercepts communication and forges a response, and replay attacks that capture and reuse a transmission
- Poisoning attacks alter lookup tables to redirect traffic, including ARP poisoning, which changes MAC address entries
- DNS poisoning alters DNS addresses to redirect computers to a different device
Denial of Service Attacks
- Ping flood, Smurf, and SYN flood are all DoS attack methods
- Ping flood attacks use ping utilty to send a large number of echo requests
- Smurf attacks send pings with a spoofed originating address to overwhelm targets
- SYN flood attacks exploit the TCP/IP 3-way handshake to prevent a connection
Distributed Denial of Service Attacks
- DDoS attacks utilize botnets to flood a device with requests
- They are difficult to block because of the vast number of sources
Interception Attacks
- Man-in-the-middle attacks can be active or passive, with passive recording data and active altering content
- Replay attacks capture transmissions and reuse them later
Poisoning Attacks
- ARP attacks alter the ARP table, allowing the attacker to intercept communication
- DNS poisoning can be used to redirect hosts to a rogue server
- DNS poisoning can be prevented by using the latest versions of BIND software
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