MCQs

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1. What is redundancy in cybersecurity?
   a. Single point of failure
   b. Duplication of critical components to ensure availability
   c. Encryption of sensitive data
   d. Limiting user access
   Answer: b. Duplication of critical components to ensure availabilityscribd​
2. Why is redundancy important in cybersecurity systems?
   a. It increases speed of data transmission
   b. It ensures system availability during component failure
   c. It enhances user authentication
   d. It reduces the need for backups
   Answer: b. It ensures system availability during component failureinstrumentationtools​
3. Which of the following is an example of redundancy in network design?
   a. Using firewalls only
   b. Multiple network paths between devices
   c. Single router for all traffic
   d. Disabling backups
   Answer: b. Multiple network paths between devicesinfraexam​
4. What protocol is commonly used to manage redundancy in Layer 2 networks?
   a. OSPF
   b. BGP
   c. Spanning Tree Protocol (STP)
   d. RIP
   Answer: c. Spanning Tree Protocol (STP)infraexam​
5. How does redundancy help in mitigating Denial of Service (DoS) attacks?
   a. By duplicating critical systems to keep service alive
   b. By encrypting traffic
   c. By blocking IP addresses
   d. By authenticating users
   Answer: a. By duplicating critical systems to keep service aliveinstrumentationtools​
6. Which redundancy method duplicates entire servers or devices for high availability?
   a. Load balancing
   b. Failover clustering
   c. Data encryption
   d. Access control
   Answer: b. Failover clusteringscribd​
7. What is a single point of failure?
   a. A backup system
   b. A component whose failure stops system operation
   c. A redundant system
   d. A firewall
   Answer: b. A component whose failure stops system operationinstrumentationtools​
8. Which type of redundancy involves using separate physical hardware to replicate a system?
   a. Software redundancy
   b. Hardware redundancy
   c. Logical redundancy
   d. Network segmentation
   Answer: b. Hardware redundancyinstrumentationtools​
9. What is the primary goal of redundancy in cybersecurity?
   a. Enhance data confidentiality
   b. Ensure system reliability and availability
   c. Prevent unauthorized access
   d. Improve encryption strength
   Answer: b. Ensure system reliability and availabilityscribd​
10. Which of the following is NOT a benefit of redundancy?
    a. Reduced system downtime
    b. Increased system complexity
    c. Higher availability
    d. Fault tolerance
    Answer: b. Increased system complexityinfraexam​
11. What does fault tolerance mean in cybersecurity?
    a. System’s ability to operate despite component failure
    b. Encrypting data to prevent faults
    c. Restricting access to users
    d. Updating firewall rules automatically
    Answer: a. System’s ability to operate despite component failureinstrumentationtools​
12. Which is a common redundancy technique in data storage?
    a. RAID configurations
    b. VPN tunneling
    c. Firewall rules
    d. Password policies
    Answer: a. RAID configurationssanfoundry​
13. In redundancy, what is a failover?
    a. An attack technique
    b. Automatic switch to backup system after failure
    c. Encryption algorithm
    d. Unauthorized access method
    Answer: b. Automatic switch to backup system after failurescribd​
14. What does redundant power supply provide in cybersecurity hardware?
    a. Backup electrical power preventing downtime
    b. Increased processing power
    c. Faster network speeds
    d. Data encryption
    Answer: a. Backup electrical power preventing downtimeinstrumentationtools​
15. Redundancy at which layer of the OSI model would involve multiple network paths?
    a. Physical Layer
    b. Presentation Layer
    c. Application Layer
    d. Session Layer
    Answer: a. Physical Layerinfraexam​
16. Which redundancy concept ensures that data is duplicated across systems to prevent data loss?
    a. Data encryption
    b. Data replication
    c. Data obfuscation
    d. Access control
    Answer: b. Data replicationsanfoundry​
17. What is load balancing in the context of redundancy?
    a. Distributing workloads across multiple resources
    b. Encrypting network traffic
    c. Blocking suspicious IP addresses
    d. Authenticating users
    Answer: a. Distributing workloads across multiple resourcesscribd​
18. How does redundancy improve disaster recovery?
    a. By providing multiple copies of critical systems
    b. By reducing encryption complexity
    c. By blocking unauthorized access
    d. By limiting network traffic
    Answer: a. By providing multiple copies of critical systemssanfoundry​
19. Which device benefits significantly from redundancy to ensure network uptime?
    a. Router
    b. Firewall
    c. Switch
    d. All of the above
    Answer: d. All of the aboveinfraexam​
20. What is the main challenge introduced by adding redundancy?
    a. Increased security risks
    b. Increased management complexity
    c. Reduced data speed
    d. Reduced availability
    Answer: b. Increased management complexityinfraexam​
21. What does a redundant array of independent disks (RAID) do?
    a. Encrypt data
    b. Improve data availability and fault tolerance
    c. Analyze network traffic
    d. Prevent phishing attacks
    Answer: b. Improve data availability and fault tolerancesanfoundry​
22. Which redundancy model allows traffic to be sent simultaneously over multiple paths?
    a. Active-active
    b. Active-passive
    c. Passive-only
    d. Disabled mode
    Answer: a. Active-activeinfraexam​
23. Which of these is an example of software redundancy?
    a. Backup firewall configurations
    b. Running multiple antivirus applications
    c. Data replication via software tools
    d. Having multiple power supplies
    Answer: c. Data replication via software toolsinstrumentationtools​
24. Which redundancy mechanism is commonly used in Internet routing?
    a. BGP redundancy
    b. STP redundancy
    c. RAID redundancy
    d. VPN redundancy
    Answer: a. BGP redundancyinfraexam​
25. What redundancy technique is used to eliminate broadcast storms in Layer 2 networks?
    a. VLAN segmentation
    b. Spanning Tree Protocol (STP)
    c. Firewall rules
    d. IPsec
    Answer: b. Spanning Tree Protocol (STP)infraexam​
26. In redundancy design, what is meant by “hot standby”?
    a. Active backup system immediately ready to take over
    b. System powered off when not in use
    c. System that encrypts all backups
    d. Backup stored offsite
    Answer: a. Active backup system immediately ready to take overinstrumentationtools​
27. What does redundancy ensure in cloud computing?
    a. Single data center operation
    b. Multiple data centers to prevent service interruption
    c. Encryption of data only
    d. Reduced network bandwidth
    Answer: b. Multiple data centers to prevent service interruptionscribd​
28. How does redundancy relate to the concept of high availability?
    a. Redundancy decreases availability
    b. Redundancy supports high availability by preventing outages
    c. Redundancy is unrelated to availability
    d. Redundancy only affects latency
    Answer: b. Redundancy supports high availability by preventing outagessanfoundry​
29. What is a redundant network link?
    a. A backup path connecting two network devices
    b. A firewall rule set
    c. A software program update
    d. A backup user account
    Answer: a. A backup path connecting two network devicesinfraexam​
30. Which redundancy type allows seamless switch-over without user interruption?
    a. Manual failover
    b. Automatic failover
    c. Delayed failover
    d. Partial failover
    Answer: b. Automatic failoverscribd​
31. What device redundancy is critical for ensuring Internet availability for businesses?
    a. Redundant DNS servers
    b. Single router
    c. Single switch
    d. Single firewall
    Answer: a. Redundant DNS serverssanfoundry​
32. Redundancy in power supplies helps prevent?
    a. Data encryption failure
    b. Power outages causing hardware shutdown
    c. Unauthorized access
    d. Network traffic congestion
    Answer: b. Power outages causing hardware shutdowninstrumentationtools​
33. What role does redundancy play in backup systems?
    a. It stores multiple copies of data for recovery
    b. It encrypts the backup data
    c. It limits backup frequency
    d. It deletes old backups automatically
    Answer: a. It stores multiple copies of data for recoveryscribd​
34. Which architectural design uses redundancy to avoid complete system failure?
    a. Single-tier architecture
    b. Multi-tier architecture with failover
    c. Unsegmented flat network
    d. Single data source
    Answer: b. Multi-tier architecture with failoversanfoundry​
35. Redundancy in cybersecurity can prevent which type of failure?
    a. Software crash
    b. Hardware failure
    c. User error
    d. Phishing attack
    Answer: b. Hardware failureinstrumentationtools​
36. What is “redundant data”?
    a. Excess data stored unnecessarily
    b. Encrypted data
    c. Data transmitted via VPN
    d. Antivirus signature files
    Answer: a. Excess data stored unnecessarilystudocu​
37. Which protocol helps avoid network loops caused by redundant links?
    a. TCP
    b. STP (Spanning Tree Protocol)
    c. FTP
    d. HTTP
    Answer: b. STP (Spanning Tree Protocol)infraexam​
38. Which type of redundancy involves geographically separated data centers?
    a. Local redundancy
    b. Geographic redundancy
    c. Power redundancy
    d. Software redundancy
    Answer: b. Geographic redundancyscribd​
39. In cloud resilience, redundancy often involves?
    a. Single zone deployment
    b. Multi-zone or multi-region deployment
    c. Encryption only
    d. Single backup
    Answer: b. Multi-zone or multi-region deploymentsanfoundry​
40. Which redundancy approach replicates data in real-time?
    a. Nearline backup
    b. Synchronous replication
    c. Asynchronous replication
    d. Manual backup
    Answer: b. Synchronous replicationsanfoundry​
41. What redundancy concept involves having multiple Internet connections for reliability?
    a. ISP redundancy
    b. Firewall redundancy
    c. DNS redundancy
    d. VPN redundancy
    Answer: a. ISP redundancyinfraexam​
42. Redundancy in software applications is typically implemented by?
    a. Load balancers and clustering
    b. Firewalls
    c. Anti-malware software
    d. Password policies
    Answer: a. Load balancers and clusteringscribd​
43. Which system redundancy model involves one active and one or more standby systems?
    a. Active-active
    b. Active-passive
    c. Passive-passive
    d. None of the above
    Answer: b. Active-passiveinfraexam​
44. What impact does redundancy have on system maintenance?
    a. Increases downtime
    b. Allows maintenance without disruption
    c. Decreases cost
    d. Reduces backup frequency
    Answer: b. Allows maintenance without disruptionsanfoundry​
45. How is redundancy related to Recovery Time Objective (RTO)?
    a. Redundancy can help reduce RTO by minimizing downtime
    b. Redundancy increases RTO
    c. Redundancy has no effect on RTO
    d. RTO is unrelated to redundancy
    Answer: a. Redundancy can help reduce RTO by minimizing downtimescribd​
46. Which of the following is a disadvantage of redundancy?
    a. Cost of additional resources
    b. Increased data loss risk
    c. Reduced security
    d. Slower network speeds
    Answer: a. Cost of additional resourcesinfraexam​
47. What is redundant array of independent nodes (RAIN) related to?
    a. Network redundancy
    b. Encryption
    c. User authentication
    d. Firewall rules
    Answer: a. Network redundancysanfoundry​
48. How does redundancy affect cybersecurity incident response?
    a. Allows quicker recovery by having backup systems ready
    b. Slows down response
    c. Prevents reporting
    d. Has no effect
    Answer: a. Allows quicker recovery by having backup systems readyscribd​
49. What is considered a best practice in implementing redundancy?
    a. Single backup at one location
    b. Multiple backups at geographically dispersed sites
    c. No backup needed
    d. Using same hardware for all backups
    Answer: b. Multiple backups at geographically dispersed sitessanfoundry​
50. Which of the following is an example of logical redundancy?
    a. Duplicate database entries for fault tolerance
    b. Duplicate physical servers
    c. Backup power supplies
    d. Multiple network cables
    Answer: a. Duplicate database entries for fault toleranceinstrumentationtools​

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