COH-285 Der beste Partner bei Ihrer Vorbereitung der Cohesity Certified Protection Professional - NetBackup Appliances

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Cohesity COH-285 Exam Syllabus Topics:

SectionWeightObjectives
Monitor, Optimize, and Troubleshoot NetBackup- Troubleshooting
  • 1. Device and media connectivity issues
    • 2. Failed jobs and error code analysis
      • 3. Disaster recovery and catalog recovery
        • 4. NetBackup Appliance issues
          - Performance optimization
          • 1. Multiplexing and throughput tuning
            • 2. Client and storage performance tuning
              - Job monitoring and analysis
              • 1. Backup, duplication, and restore job monitoring
                • 2. Job status interpretation and reporting
                  Configure NetBackup and NetBackup Appliances31%- Environment configuration
                  • 1. Host properties and security certificates
                    • 2. Primary, media, and client configuration settings
                      - Advanced backup features
                      • 1. Backup duplication and Storage Lifecycle Policies
                        • 2. Auto Image Replication and Isolated Recovery Environment (IRE)
                          • 3. NetBackup Accelerator
                            • 4. Multiple data streams and checkpoint restart
                              • 5. Synthetic backups and True Image Restore (TIR)
                                - Catalog and appliance management
                                • 1. Appliance Shell Menu (CLISH)
                                  • 2. Catalog backup configuration
                                    • 3. Appliance Web Console administration
                                      - Deduplication and storage technologies
                                      • 1. Universal Shares and Snapshot Manager
                                        • 2. MSDP Cloud Storage and WORM storage
                                          • 3. Media server and client-side deduplication
                                            - Storage configuration
                                            • 1. Storage unit groups
                                              • 2. Disk storage and cloud storage configuration
                                                - Backup policies and protection plans
                                                • 1. Protection plan configuration
                                                  • 2. Policy creation and management
                                                    NetBackup Appliance Operations- Appliance configuration and maintenance
                                                    • 1. Initial setup and configuration
                                                      • 2. Hardware and system health monitoring
                                                        - Advanced appliance features
                                                        • 1. Storage integration and optimization
                                                          • 2. Appliance-level troubleshooting

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                                                            Cohesity Certified Protection Professional - NetBackup Appliances COH-285 Prüfungsfragen mit Lösungen (Q29-Q34):

                                                            29. Frage
                                                            Refer to the exhibit.
                                                            A backup policy uses a Full backup schedule with a schedule type of Frequency: 1 days. The start window for the schedule is configured as shown in the exhibit:

                                                            The administrator runs a manual backup at 10:00 on Thursday.
                                                            When will the next backup run, if all prior backups completed successfully?

                                                            Antwort: D


                                                            30. Frage
                                                            An administrator runs the following command on the primary server to test connectivity to a client:
                                                            bptestbpcd -client clientA
                                                            The administrator receives the following message:
                                                            < 16 > bptestbpcd main: Function ConnectToBPCD (clientA) failed: 25 cannot connect on socket Which two reasons may cause this error message? (Select two.)

                                                            Antwort: B,E

                                                            Begründung:
                                                            The correct causes are an incorrect client host-name resolution entry on the primary server and stopped NetBackup client processes. The bptestbpcd utility is specifically used to establish a connection from a NetBackup server to the bpcd daemon on a NetBackup host or client, and successful output reports the socket connections that were established. A status 25: cannot connect on socket means the primary server could not complete that socket connection. Official NetBackup troubleshooting guidance states that status 25 commonly results when the client does not acknowledge the TCP connection, the server cannot resolve the client, the client is not listening on bpcd/vnetd, or name resolution fails. Therefore, an incorrect hosts-file entry for clientA on the primary server can send the connection attempt to the wrong address or prevent proper resolution. Likewise, if the NetBackup processes on the client are stopped, the client will not be listening on the required bpcd/vnetd ports. The troubleshooting procedure specifically instructs administrators to verify that the client has bpcd and vnetd ports in listening mode. Options B and E are unrelated to this client-side connection test, while C aligns more closely with authorization failures such as status 59. References/topics:
                                                            bptestbpcd, status code 25, client name resolution, and bpcd/vnetd client connectivity troubleshooting.


                                                            31. Frage
                                                            A NetBackup appliance is not backing up data as expected. What steps can be taken to troubleshoot the problem?

                                                            Antwort: B


                                                            32. Frage
                                                            An administrator has a Synthetic backup that fails with a status code 1, and the error message:
                                                            No images were found to synthesize (607)
                                                            Which steps should the administrator take to determine why the backup failed?

                                                            Antwort: A


                                                            33. Frage
                                                            An administrator is experiencing a communication issue between the master and client and believes the certificate might be revoked.
                                                            Which log can the administrator view to analyze a certificate issue?

                                                            Antwort: A

                                                            Begründung:
                                                            The correct log is the vnetd proxy log. NetBackup secure host communication uses host ID-based certificates and certificate revocation lists (CRLs). When communication fails between the primary/master server and a client because a certificate is revoked, unavailable, missing, or affected by CRL validation, the relevant troubleshooting path is the vnetd proxy process log files. Cohesity's NetBackup Troubleshooting Guide states that for host-certificate troubleshooting, administrators should examine job details for certificate, revocation, and CRL messages, and "may need to examine the vnetd proxy process log files" for related messages and status codes. The same guide notes that NetBackup hosts must have a valid host ID-based security certificate and a valid CRL to communicate; otherwise, communication fails. For a revoked primary server certificate, Cohesity specifically identifies that the vnetd proxy process log files on hosts show that the primary server certificate is revoked. Therefore, nbemm is for Enterprise Media Manager functions, bprd is request processing, and nbrb is resource brokering; none is the primary diagnostic log for certificate revocation analysis. Reference topics: Troubleshooting security certificate revocation, Viewing vnetd proxy log files, and Test the vnetd proxy connections.


                                                            34. Frage
                                                            ......

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