nutanix‐database‐automation‐ncp‐db‐ncp‐db‐65‐NDMA_p14 - itnett/FTD02H-N GitHub Wiki

This mock exam is designed to test your knowledge and understanding of the concepts required to pass the Nutanix Database Management and Automation (NDMA) exam. The questions cover various topics, including configuration, management, security, and automation within the Nutanix Database Service (NDB).

• Each question has four options, with only one correct answer.
• Aim to complete the mock exam within 60 minutes to simulate real exam conditions.
• Review your answers after completing the test to identify areas for further study.

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1. What is the primary purpose of Nutanix Database Service (NDB)?

   • A) Manage virtual machines
   • B) Automate and simplify database management across multiple engines
   • C) Provide email services for databases
   • D) Monitor network performance

2. Which of the following is NOT a supported database engine in NDB?

   • A) Oracle
   • B) MongoDB
   • C) Cassandra
   • D) MySQL

3. What does "HA" stand for in the context of Nutanix Database Service?

   • A) Host Access
   • B) High Availability
   • C) Hardware Acceleration
   • D) Hypervisor Administration

4. Which port is used for secure communication with the NDB web console?

   • A) 389
   • B) 9443
   • C) 443
   • D) 9440

5. What is the function of a Compute Profile in NDB?

   • A) Define backup policies for databases
   • B) Specify vCPUs, memory, and storage resources for database VMs
   • C) Set SSL certificates for secure communication
   • D) Manage role-based access control (RBAC)

6. Which NDB feature allows for automated backup management and point-in-time recovery?

   • A) Peer Authentication
   • B) High Availability
   • C) Time Machine
   • D) Diagnostics Bundle

7. What role has full control over all NDB features, including user management and HA configuration?

   • A) Database Administrator (DBA)
   • B) Infrastructure Administrator
   • C) Super Administrator
   • D) Database Infrastructure Administrator

8. How can you ensure secure communication for database connections in NDB?

   • A) Enable RBAC only
   • B) Install SSL certificates and use secure LDAP (LDAPS)
   • C) Use default communication settings
   • D) Disable all external access

9. Which profile defines the database engine and operating system configuration in NDB?

   • A) Network Profile
   • B) Compute Profile
   • C) Software Profile
   • D) Database Parameter Profile

10. What is the purpose of the Diagnostics Bundle in NDB?

    • A) Automate backup processes
    • B) Collect logs and data for troubleshooting
    • C) Create new database instances
    • D) Manage storage and IOPS

11. Which command is used to manually create a snapshot in NDB using the CLI?

    • A) ndbcli snapshot create --database <database_name> --type manual
    • B) ndbcli provision database --engine <engine_name> --profile <profile_name>
    • C) ndbcli restore database --database <database_name> --snapshot <snapshot_name>
    • D) ndbcli patch apply --target <vm_name>

12. What does the term "multi-cluster HA" refer to in NDB?

    • A) High Availability across multiple Nutanix clusters
    • B) A single cluster with multiple nodes
    • C) High Availability within a single Nutanix cluster
    • D) Clustering of multiple databases within one cluster

13. Which of the following is a key function of Role-Based Access Control (RBAC) in NDB?

    • A) Enabling database replication
    • B) Controlling user permissions and access
    • C) Automating database backups
    • D) Optimizing database performance

14. What is the default port for LDAP communication in NDB?

    • A) 443
    • B) 389
    • C) 636
    • D) 9440

15. What should you do to enable High Availability (HA) in NDB?

    • A) Install new SSL certificates
    • B) Configure HA for API, Proxy, and Repository VMs
    • C) Increase CPU and memory resources
    • D) Enable RBAC

16. Which NDB feature allows you to clone a database for testing or development purposes?

    • A) Peer Authentication
    • B) Diagnostics Bundle
    • C) Time Machine
    • D) Cluster Configuration

17. What command is used to restore a database from a snapshot using the NDB CLI?

    • A) ndbcli backup create --database <database_name>
    • B) ndbcli restore database --database <database_name> --snapshot <snapshot_name>
    • C) ndbcli snapshot delete --database <database_name>
    • D) ndbcli clone database --source <source_name> --target <target_name>

18. Which profile specifies the VLAN and IP settings in NDB?

    • A) Compute Profile
    • B) Software Profile
    • C) Network Profile
    • D) Database Parameter Profile

19. What does a Software Profile in NDB define?

    • A) Network configurations like VLANs and IP addresses
    • B) Database engine version and OS configuration
    • C) vCPUs, memory, and storage requirements
    • D) Backup retention policies

20. What should you check first when an NDB backup operation fails due to network issues?

    • A) The cluster configuration settings
    • B) The SSL certificate validity
    • C) The network settings, DNS, and firewall rules
    • D) The Time Machine policy

21. How can database access be limited to specific roles in NDB?

    • A) By setting up SSL certificates
    • B) Through Role-Based Access Control (RBAC)
    • C) By configuring a Compute Profile
    • D) By enabling HA for all databases

22. Which Nutanix Database Service role is responsible for managing clusters and compute/network profiles?

    • A) Database Infrastructure Administrator
    • B) Infrastructure Administrator
    • C) Super Administrator
    • D) Database Administrator (DBA)

23. How do you perform One-Click Patching in NDB?

    • A) Access Administration > Patching > One-Click Patching
    • B) Use the ndbcli patch apply command
    • C) Modify the Compute Profile settings
    • D) Use the Nutanix API to push patches

24. What does the term "SLA" stand for in the context of NDB's Time Machine?

    • A) Software Level Agreement
    • B) Storage Level Assignment
    • C) Service Level Agreement
    • D) Secure Layer Access

25. Which profile in NDB defines specific database settings such as cache size or buffer settings?

    • A) Compute Profile
    • B) Network Profile
    • C) Software Profile
    • D) Database Parameter Profile

(Questions 26-75 will continue covering similar topics, such as automation commands, advanced configurations, troubleshooting steps, and more in-depth feature usage in NDB.)

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• Check Your Knowledge: Compare your answers with official Nutanix documentation or the NDB User Guide to identify areas of improvement.
• Focus on Weak Areas: Spend additional study time on any sections where you struggled.
• Simulate Real Exam Conditions: Take the test in one sitting without interruptions to gauge your readiness.

By completing this mock exam, you'll have a solid understanding of the key concepts needed to pass the NDMA exam. Keep practicing, and good luck!

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26. Which of the following actions can be performed using the Nutanix Database Service (NDB) CLI?

    • A) Create user roles
    • B) Backup a database
    • C) Configure SSL certificates
    • D) Manage compute and network profiles

27. What is the purpose of using a Network Profile in NDB?

    • A) To define the backup schedule for databases
    • B) To specify VLANs, IP pools, and segmentation settings
    • C) To manage user roles and access levels
    • D) To optimize database performance

28. How often should SSL certificates be updated in NDB for maintaining secure communication?

    • A) Only during initial setup
    • B) Every month
    • C) Annually or as required by security policies
    • D) Never, once installed

29. What is the primary benefit of enabling High Availability (HA) for NDB?

    • A) To allow more users to access the databases simultaneously
    • B) To ensure continuous operation during failures
    • C) To improve database performance
    • D) To reduce backup frequency

30. Which component in NDB is used for monitoring database health and resource usage?

    • A) Time Machine
    • B) Alerts Dashboard
    • C) Patching Manager
    • D) Cluster Management

31. Which profile must be updated if a database needs additional CPU and memory resources?

    • A) Network Profile
    • B) Compute Profile
    • C) Database Parameter Profile
    • D) Software Profile

32. What is the default port used for secure LDAP communication in NDB?

    • A) 389
    • B) 636
    • C) 443
    • D) 9443

33. Which tool in NDB provides insights into storage utilization and efficiency?

    • A) Alerts Dashboard
    • B) Time Machine
    • C) Storage Insights
    • D) Diagnostics Bundle

34. What is the function of the "One-Click Upgrade" feature in NDB?

    • A) Automatically apply software updates to NDB
    • B) Create backups of all databases
    • C) Generate new SSL certificates
    • D) Provision new databases with predefined profiles

35. Which port is used for Prism Central communication in a Nutanix environment?

    • A) 9443
    • B) 389
    • C) 443
    • D) 9440

36. How do you manage user access and permissions within NDB?

    • A) By configuring backup schedules
    • B) By using Role-Based Access Control (RBAC)
    • C) By updating the Software Profile
    • D) By setting up compute resources

37. What is the purpose of creating a Database Parameter Profile in NDB?

    • A) To manage network configurations
    • B) To set specific configuration parameters for databases
    • C) To define user roles and permissions
    • D) To configure backup retention policies

38. Which NDB feature allows for data protection by creating clones and snapshots?

    • A) RBAC
    • B) Diagnostics Bundle
    • C) Time Machine
    • D) Cluster Configuration

39. How do you add a new Nutanix cluster to NDB?

    • A) Go to Administration > Clusters > Add Cluster
    • B) Use the Nutanix API
    • C) Install the cluster agent manually
    • D) Use the ndbcli cluster add command

40. Which NDB role is primarily responsible for creating software profiles?

    • A) Super Administrator
    • B) Infrastructure Administrator
    • C) Database Infrastructure Administrator
    • D) Database Administrator (DBA)

41. What does the Time Machine feature in NDB automate?

    • A) User management and access control
    • B) Snapshot creation and backup management
    • C) High Availability configuration
    • D) Software updates and patching

42. Which type of backup is most appropriate for recovering from an accidental data deletion?

    • A) Full backup
    • B) Incremental backup
    • C) Point-in-time restore
    • D) Snapshot replication

43. What action should you take if a patch fails to apply correctly in NDB?

    • A) Restart the database engine
    • B) Roll back the patch and troubleshoot the issue
    • C) Increase resource allocation and try again
    • D) Ignore the failure and continue operations

44. What does the Compute Profile define in the Nutanix Database Service?

    • A) Backup frequency and retention
    • B) Network configurations and IP settings
    • C) Database engine version and OS configuration
    • D) Virtual resources like vCPUs, memory, and disk

45. Which tool in NDB helps you diagnose and resolve system issues by collecting logs and configurations?

    • A) Diagnostics Bundle
    • B) Alerts Dashboard
    • C) Time Machine
    • D) Compute Profile Manager

46. What is the first step in troubleshooting a failed NDB provisioning operation?

    • A) Check the availability of compute resources
    • B) Restart the NDB server
    • C) Review the error logs and alerts
    • D) Reapply the provisioning profile

47. Which profile in NDB should be updated to change the network configuration for a database?

    • A) Software Profile
    • B) Compute Profile
    • C) Network Profile
    • D) Database Parameter Profile

48. What is a key use of the Role-Based Access Control (RBAC) feature in NDB?

    • A) To monitor database performance
    • B) To manage user permissions and roles
    • C) To configure SSL certificates
    • D) To automate backups

49. What happens if a database server VM does not meet the prerequisites for registration in NDB?

    • A) The VM is automatically updated
    • B) The registration process fails
    • C) The VM is quarantined
    • D) The database is automatically backed up

50. How do you ensure that a critical database has sufficient storage capacity in NDB?

    • A) Regularly apply patches to the database
    • B) Monitor storage usage and increase capacity as needed
    • C) Use the Diagnostics Bundle to predict usage trends
    • D) Set up SSL certificates for secure access

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51. Which command is used to scale database resources in NDB using the CLI?

    • A) ndbcli scale database --database <database_name> --compute <new_compute_profile>
    • B) ndbcli snapshot create --database <database_name> --type manual
    • C) ndbcli patch apply --target <vm_name>
    • D) ndbcli backup create --database <database_name>

52. Which NDB component helps you analyze storage efficiency and utilization?

    • A) Alerts Dashboard
    • B) Storage Insights
    • C) Time Machine
    • D) Network Profile

53. What should you do after resolving a critical alert in NDB?

    • A) Increase compute resources
    • B) Clear the alert from the Alerts Dashboard
    • C) Schedule an audit
    • D) Restart all database instances

54. How can you automate database deployment in NDB?

    • A) By manually configuring each setting
    • B) By using predefined Provisioning Profiles
    • C) By applying patches automatically
    • D) By setting up network segmentation

55. What is a primary benefit of using SSL certificates in NDB?

    • A) To reduce the need for backups
    • B) To secure communications between clients and the database
    • C) To automate database provisioning
    • D) To optimize database performance

56. Which action should be taken if replication between clusters is failing in a multi-cluster HA environment?

    • A) Increase network bandwidth
    • B) Verify network connectivity and firewall settings
    • C) Restart all cluster nodes
    • D) Reduce the number of databases

57. How do you manually initiate a database backup in NDB?

    • A) Use the ndbcli backup create --database <database_name> command
    • B) Access Administration > Backup Manager
    • C) Restart the database server
    • D) Modify the Compute Profile

58. What type of restore should be used to recover a database to a specific moment in time?

    • A) Incremental restore
    • B) Full restore
    • C) Differential restore
    • D) Point-in-time restore

59. Which of the following is a responsibility of the Database Administrator (DBA) in NDB?

    • A) Configure multi-cluster HA
    • B) Manage database clones and Time Machine operations
    • C) Create software profiles
    • D) Install SSL certificates

60. **What should you check if a

database clone fails to create in NDB?**
- A) Ensure sufficient storage capacity is available
- B) Update the SSL certificates
- C) Increase network bandwidth
- D) Clear all active alerts

61. Which command allows you to view all active alerts in NDB using the CLI?

    • A) ndbcli alert list --all
    • B) ndbcli monitor alerts --all
    • C) ndbcli backup status --all
    • D) ndbcli network status --alerts

62. What should be the first step in securing NDB communication?

    • A) Configuring backup schedules
    • B) Installing SSL certificates
    • C) Increasing compute resources
    • D) Adding new VLANs

63. Which NDB feature helps restore database services quickly after a failure?

    • A) Time Machine
    • B) Network Profile
    • C) Diagnostics Bundle
    • D) Alerts Dashboard

64. What is the purpose of the "Diagnostics Bundle" in NDB?

    • A) Automate backups
    • B) Provide a comprehensive set of logs for troubleshooting
    • C) Optimize database performance
    • D) Monitor storage efficiency

65. Which NDB role is primarily focused on optimizing database performance?

    • A) Super Administrator
    • B) Database Infrastructure Administrator
    • C) Database Administrator (DBA)
    • D) Infrastructure Administrator

66. What command would you use to check the status of an ongoing patch operation in NDB?

    • A) ndbcli patch status --target <vm_name>
    • B) ndbcli snapshot status --database <database_name>
    • C) ndbcli monitor patch --all
    • D) ndbcli upgrade status --target <vm_name>

67. How do you enable secure Active Directory communication in NDB?

    • A) Use LDAP on port 389
    • B) Use LDAPS on port 636
    • C) Install SSL certificates only
    • D) Disable LDAP entirely

68. What is the role of the Alerts Dashboard in NDB?

    • A) Monitor and display alerts for database health and performance issues
    • B) Create new database instances
    • C) Manage storage configurations
    • D) Generate backup reports

69. Which of the following is NOT a valid reason to configure a Database Parameter Profile in NDB?

    • A) To improve database performance
    • B) To set cache size or buffer settings
    • C) To manage user roles and permissions
    • D) To apply specific configuration parameters for databases

70. What should you do if a database server VM fails to register in NDB?

    • A) Restart the VM and try again
    • B) Ensure network prerequisites and SSH access are properly configured
    • C) Delete the VM and create a new one
    • D) Increase CPU and memory resources

71. Which NDB feature supports cloning databases for non-production use?

    • A) Network Profile
    • B) Time Machine
    • C) RBAC
    • D) Diagnostics Bundle

72. How do you increase the storage capacity for a database in NDB?

    • A) Update the Network Profile
    • B) Modify the Compute Profile
    • C) Use the Storage Insights tool to add more storage
    • D) Go to Database Settings and increase storage allocation

73. What does "RBAC" stand for in the context of Nutanix Database Service?

    • A) Role-Based Access Control
    • B) Remote Backup and Configuration
    • C) Real-Time Backup Access Control
    • D) Resource-Based Access Configuration

74. Which command in NDB allows you to manually create a backup of a database?

    • A) ndbcli restore create --database <database_name>
    • B) ndbcli backup create --database <database_name>
    • C) ndbcli monitor create --database <database_name>
    • D) ndbcli database create --backup

75. What is the primary use of the Nutanix Database Service (NDB) API?

    • A) To manage NDB using scripts and external applications
    • B) To monitor alerts and generate reports
    • C) To install SSL certificates
    • D) To configure database replication

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• Answer Key Access: Check the Nutanix Database Service documentation and User Guides for correct answers and explanations.
• Focus Areas: Concentrate on any weak points identified during the test.
• Real-World Practice: Apply what you've learned by simulating scenarios in a Nutanix lab environment.

By completing this full mock exam, you'll be better prepared to tackle the real NDMA exam. Keep practicing, and good luck on your journey to certification!

Here is the answer key for the 75 multiple-choice questions in the NDMA mock exam, along with explanations for each answer:

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1. C) Automate and simplify database management across multiple engines.
   Explanation: NDB is designed to automate and simplify the management of various databases, like Oracle, SQL Server, PostgreSQL, etc.

2. C) Cassandra
   Explanation: NDB supports Oracle, SQL Server, PostgreSQL, MySQL, MariaDB, and MongoDB, but not Cassandra.

3. B) High Availability
   Explanation: HA stands for High Availability, which ensures continuous operation even during failures.

4. A) 443
   Explanation: Port 443 is used for HTTPS, which provides secure communication for the NDB web console and REST API.

5. B) Network Profile
   Explanation: The Network Profile specifies VLAN, IP settings, and segmentation details, critical for database VM communication.

6. B) Time Machine
   Explanation: Time Machine automates snapshot creation and management, supporting backups and restores.

7. C) Storage Container
   Explanation: Storage containers are configured in NDB to specify where database data will reside.

8. D) Prism Central IP, credentials, and cluster name
   Explanation: To add a cluster, you need to provide details like the Prism Central IP, credentials, and cluster name for registration.

9. D) Software Profile
   Explanation: A Software Profile defines the database engine, its version, and OS settings.

10. A) vCPUs, memory, and disk resources
    Explanation: Compute Profiles specify the resources required for a database VM, including vCPUs, memory, and disk.

11. D) Time Machine
    Explanation: Time Machine automates backups and point-in-time recovery to ensure data protection.

12. B) Time Machine
    Explanation: Time Machine is used to automate backups and manage snapshots for recovery.

13. C) Define user permissions and access controls
    Explanation: RBAC is used to assign roles and permissions to users, ensuring proper access control.

14. A) Use predefined profiles
    Explanation: Profiles allow for standardized and automated deployments, ensuring consistency and compliance.

15. C) Every 6 months or as required by security policy
    Explanation: SSL certificates should be regularly updated based on security policies to maintain secure communication.

16. C) Diagnostics Bundle
    Explanation: The Diagnostics Bundle collects logs and configurations for troubleshooting purposes.

17. D) Time Machine
    Explanation: Time Machine provides automated snapshots and backups, allowing for point-in-time recovery.

18. B) Role-Based Access Control (RBAC)
    Explanation: RBAC is used to manage user access and define what actions they can perform within NDB.

19. B) Automatically register and discover databases
    Explanation: NDB supports automatic registration and discovery of databases, simplifying management.

20. C) NDB CLI
    Explanation: The NDB CLI is a command-line interface used for managing NDB functions, such as provisioning, patching, and scaling.

21. A) Patching Manager
    Explanation: The Patching Manager is used to apply updates to databases and servers in NDB.

22. C) Increase storage capacity as needed
    Explanation: Monitoring storage usage and expanding capacity as required ensures adequate resources for databases.

23. C) Manage and automate backups
    Explanation: Time Machine is specifically designed to manage backups and automate the backup process.

24. B) LDAP and LDAPS
    Explanation: Port 389 is used for LDAP, and 636 is used for LDAPS, both critical for secure Active Directory communication.

25. A) 9443
    Explanation: Port 9443 is used for NDB API communication, allowing external applications to interact with NDB.

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26. D) Manage compute and network profiles
    Explanation: The NDB CLI allows administrators to manage various components, including compute and network profiles.

27. B) To specify VLANs, IP pools, and segmentation settings
    Explanation: Network Profiles define the network settings required for database VM communication.

28. C) Annually or as required by security policies
    Explanation: SSL certificates should be updated regularly according to security guidelines.

29. B) To ensure continuous operation during failures
    Explanation: HA provides redundancy to ensure uninterrupted operation even in the event of a failure.

30. B) Alerts Dashboard
    Explanation: The Alerts Dashboard is used to monitor and display alerts related to database health and resource usage.

31. B) Compute Profile
    Explanation: Compute Profiles define the CPU, memory, and storage resources required by the database VM.

32. B) 636
    Explanation: Port 636 is used for LDAPS, which is a secure protocol for Active Directory communication.

33. C) Storage Insights
    Explanation: Storage Insights provides detailed information on storage utilization and efficiency in NDB.

34. A) Automatically apply software updates to NDB
    Explanation: The One-Click Upgrade feature in NDB is used to automate software updates.

35. D) 9440
    Explanation: Port 9440 is used for communication between NDB and Prism Central.

36. B) By using Role-Based Access Control (RBAC)
    Explanation: RBAC manages user roles and permissions within NDB.

37. B) To set specific configuration parameters for databases
    Explanation: Database Parameter Profiles are used to define specific settings for optimizing database performance.

38. C) Time Machine
    Explanation: Time Machine allows for the creation of snapshots and cloning, essential for data protection.

39. A) Go to Administration > Clusters > Add Cluster
    Explanation: To add a new cluster, you use the Clusters section in the NDB Administration console.

40. C) Database Infrastructure Administrator
    Explanation: This role is primarily responsible for creating and managing software profiles in NDB.

41. B) Snapshot creation and backup management
    Explanation: Time Machine automates the creation and management of backups and snapshots.

42. C) Point-in-time restore
    Explanation: Point-in-time restores allow databases to be restored to a specific time, ideal for recovering from data deletions.

43. B) Roll back the patch and troubleshoot the issue
    Explanation: Rolling back allows you to stabilize the system and address the cause of the failure.

44. D) Virtual resources like vCPUs, memory, and disk
    Explanation: Compute Profiles define the resources allocated to a database VM, such as vCPUs and memory.

45. A) Diagnostics Bundle
    Explanation: This tool collects logs and configuration data needed for troubleshooting.

46. C) Review the error logs and alerts
    Explanation: The first step in troubleshooting is to understand what went wrong by reviewing logs and alerts.

47. C) Network Profile
    Explanation: The Network Profile is used to manage and update network configurations for a database.

48. B) To manage user permissions and roles
    Explanation: RBAC controls user access by defining roles and permissions.

49. B) The registration process fails
    Explanation: If a VM does not meet the prerequisites, registration cannot be completed.

50. B) Monitor storage usage and increase capacity as needed
    Explanation: Regular monitoring ensures that you can expand storage capacity before it becomes a critical issue.

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51. A) ndbcli scale database --database <database_name> --compute <new_compute_profile>
    Explanation: This command is used to scale resources for a specific database using the CLI.

52. B) Storage Insights
    Explanation: Storage Insights provides data on storage utilization and efficiency.

53. B) Clear the alert from the Alerts Dashboard
    Explanation: Clearing resolved alerts helps maintain a clean monitoring interface.

54. B) By using predefined Provisioning Profiles
    Explanation: Provisioning Profiles automate and standardize database deployments.

55. B) To secure communications between clients and the database
    Explanation: SSL certificates encrypt data in transit to ensure secure communication.

56. B) Verify network connectivity and firewall settings
    Explanation: Checking network connectivity and firewall settings is crucial for troubleshooting replication failures.

57. A) Use the ndbcli backup create --database <database_name> command
    Explanation: This command allows you to manually initiate a backup of a specified database.

58. D) Point-in-time restore
    Explanation: Point-in-time restores recover a database to a specific moment in time.

59. B) Manage database clones and Time Machine operations
    Explanation: The DBA is responsible for handling cloning and backup operations.

60. A) Ensure sufficient storage capacity is available
    Explanation: Lack of storage capacity can cause a database clone to fail.

61. B) ndbcli monitor alerts --all
    Explanation: This command displays all active alerts in NDB.

62. B) Installing SSL certificates
    Explanation: SSL certificates secure communication between NDB and other components.

63

. A) Time Machine
Explanation: Time Machine allows for quick restoration after a failure.

64. B) Provide a comprehensive set of logs for troubleshooting
    Explanation: The Diagnostics Bundle is used to collect logs and other information for troubleshooting.

65. C) Database Administrator (DBA)
    Explanation: The DBA focuses on optimizing and maintaining database performance.

66. A) ndbcli patch status --target <vm_name>
    Explanation: This command checks the status of a patch operation on a specific VM.

67. B) Use LDAPS on port 636
    Explanation: LDAPS on port 636 secures communication with Active Directory.

68. A) Monitor and display alerts for database health and performance issues
    Explanation: The Alerts Dashboard provides visibility into alerts related to database operations.

69. C) To manage user roles and permissions
    Explanation: A Database Parameter Profile is not used to manage roles; it configures database settings.

70. B) Ensure network prerequisites and SSH access are properly configured
    Explanation: Registration may fail if network or SSH access is not properly configured.

71. B) Time Machine
    Explanation: Time Machine enables cloning databases for testing, development, or other non-production purposes.

72. D) Go to Database Settings and increase storage allocation
    Explanation: Storage capacity can be increased by adjusting the settings in the NDB console.

73. A) Role-Based Access Control
    Explanation: RBAC stands for Role-Based Access Control, used to manage user permissions.

74. B) ndbcli backup create --database <database_name>
    Explanation: This command creates a manual backup of a specified database.

75. A) To manage NDB using scripts and external applications
    Explanation: The NDB API enables integration with external applications and script-based management.

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By reviewing these explanations, you should understand the reasoning behind each correct answer, helping you better prepare for the NDMA exam. Focus on areas where you may need further study or practice, and use real-world scenarios to apply your knowledge effectively.