Top 30 multiple-choice questions (MCQs) only focused on the Denial of Service (DoS) Attacks on Data Stores in WEB Security covering below topics,along with their answers and explanations.
• Describing how DoS attacks can impact the availability of data stores.
• Discussing preventive measures and mitigation strategies.
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1. What is the primary goal of a Denial of Service (DoS) attack on a data store?
- To manipulate stored data
- To enhance data confidentiality
- To compromise user authentication
- To disrupt the availability of data
The primary goal of a DoS attack on a data store is to disrupt the availability of data, making it temporarily or permanently inaccessible.
2. How can a Distributed Denial of Service (DDoS) attack differ from a traditional DoS attack?
- DDoS attacks are less sophisticated
- DDoS attacks involve multiple attackers
- Traditional DoS attacks use encryption
- Traditional DoS attacks target network infrastructure
DDoS attacks involve multiple attackers and often utilize a distributed network of compromised computers to overwhelm a target's resources.
3. What is the purpose of a SYN flood attack in the context of DoS attacks on data stores?
- To manipulate stored data
- To compromise user authentication
- To overwhelm the target with half-open connections
- To enhance data confidentiality
SYN flood attacks overwhelm the target by exploiting the three-way handshake process, creating a large number of half-open connections.
4. How can rate limiting contribute to mitigating DoS attacks on data stores?
- By encrypting data during transmission
- By restricting the rate of incoming requests
- By enhancing user authentication
- By improving server performance
Rate limiting restricts the rate of incoming requests, helping to mitigate the impact of DoS attacks by controlling resource usage.
5. What is the role of a Content Delivery Network (CDN) in mitigating DoS attacks?
- To improve data confidentiality
- To enhance user authentication
- To distribute traffic across multiple servers
- To encrypt data during transmission
CDNs distribute traffic across multiple servers, helping to mitigate the impact of DoS attacks by improving availability and reducing the load on individual servers.
6. In a reflective amplification attack, what role do open services, like DNS or NTP, play?
- They serve as the attackers' command and control servers
- They generate fake traffic to overwhelm the target
- They amplify and reflect attack traffic to the target
- They encrypt data during transmission
In reflective amplification attacks, open services amplify and reflect attack traffic to the target, increasing the impact of the attack.
7. What is the purpose of implementing load balancing in the context of DoS attack mitigation?
- To enhance data confidentiality
- To distribute traffic across multiple servers
- To restrict access to sensitive data
- To improve server performance
Load balancing distributes traffic across multiple servers, helping to mitigate the impact of DoS attacks by improving availability and resource utilization.
8. How can CAPTCHA implementation contribute to DoS attack prevention?
- By encrypting data during transmission
- By enhancing user authentication
- By restricting the rate of automated requests
- By improving server performance
CAPTCHA implementation helps prevent DoS attacks by restricting the rate of automated requests, reducing the effectiveness of automated attacks.
9. What is the purpose of implementing failover mechanisms in DoS attack mitigation?
- To enhance data confidentiality
- To improve server performance
- To ensure continuous service availability by switching to backup systems
- To restrict access to sensitive data
Failover mechanisms ensure continuous service availability by switching to backup systems in the event of a DoS attack, improving resilience.
10. How does IP blacklisting contribute to DoS attack mitigation?
- By encrypting data during transmission
- By enhancing user authentication
- By blocking traffic from known malicious IP addresses
- By improving server performance
IP blacklisting contributes to DoS attack mitigation by blocking traffic from known malicious IP addresses, preventing them from accessing the data store.
11. What is the purpose of implementing Intrusion Prevention Systems (IPS) in the context of DoS attack mitigation?
- To enhance data confidentiality
- To improve server performance
- To detect and block malicious traffic in real-time
- To restrict access to sensitive data
IPS is designed to detect and block malicious traffic in real-time, contributing to the mitigation of DoS attacks by preventing unauthorized access.
12. How can resource scaling contribute to DoS attack resilience?
- By improving data confidentiality
- By enhancing user authentication
- By dynamically adjusting resources based on demand
- By restricting access to sensitive data
Resource scaling involves dynamically adjusting resources based on demand, contributing to DoS attack resilience by ensuring optimal resource allocation.
13. What role does Anycast play in mitigating DoS attacks?
- It encrypts data during transmission
- It enhances user authentication
- It distributes traffic to the nearest server in a network
- It improves server performance
Anycast distributes traffic to the nearest server in a network, helping to mitigate the impact of DoS attacks by reducing latency and improving response times.
14. How does traffic filtering based on behavior analysis contribute to DoS attack prevention?
- By enhancing user authentication
- By blocking traffic based on known patterns of malicious behavior
- By improving server performance
- By encrypting data during transmission
Traffic filtering based on behavior analysis blocks traffic based on known patterns of malicious behavior, contributing to DoS attack prevention.
15. What is the purpose of implementing a Web Application Firewall (WAF) in DoS attack mitigation?
- To improve data confidentiality
- To restrict access to sensitive data
- To detect and block malicious traffic targeting web applications
- To enhance user authentication
WAFs detect and block malicious traffic targeting web applications, contributing to DoS attack mitigation by preventing unauthorized access.
16. What is the potential impact of a Slowloris attack on a web application?
- Enhanced data confidentiality
- Improved server performance
- Extended response times and resource exhaustion
- Increased data availability
Slowloris attacks cause extended response times and resource exhaustion, impacting the availability of a web application.
17. How does the use of a CDN with DDoS protection enhance DoS attack resilience?
- By encrypting data during transmission
- By enhancing user authentication
- By distributing and filtering traffic across a network of servers
- By improving server performance
CDNs with DDoS protection distribute and filter traffic across a network of servers, enhancing DoS attack resilience by improving availability and filtering malicious traffic.
18. What is the role of a reverse proxy in DoS attack mitigation?
- To enhance data confidentiality
- To improve server performance
- To distribute and filter incoming traffic before reaching the server
- To restrict access to sensitive data
A reverse proxy distributes and filters incoming traffic before reaching the server, contributing to DoS attack mitigation by improving resource usage.
19. How can geofencing contribute to DoS attack prevention?
- By enhancing user authentication
- By restricting access to sensitive data based on geographic location
- By encrypting data during transmission
- By improving server performance
Geofencing restricts access to sensitive data based on geographic location, contributing to DoS attack prevention by blocking traffic from specific regions.
20. What is the purpose of implementing a caching mechanism in DoS attack mitigation?
- To improve data confidentiality
- To enhance user authentication
- To store and serve frequently requested content without reaching the server
- To restrict access to sensitive data
Caching mechanisms store and serve frequently requested content without reaching the server, improving response times and contributing to DoS attack mitigation.
