Free Cohesity COH-285 Practice Exam with Questions & Answers | Set: 4

The correct action is to move E02003 to the scratch_pool. Cohesity NetBackup documentation states that the Policy volume pool specifies the default media pool for policy backups, and whenever a new volume is required, NetBackup allocates it from that indicated pool. It also identifies the scratch volume pool as the mechanism that lets NetBackup automatically transfer volumes when another pool has no media available. In the output, the policy requires server_tapes, but that pool has no usable available HCART2 media: E02007 and E02008 are active with retention levels 1 and 3, E02005 is full, E02006 is frozen, and E02004 is FULL/FROZEN. Unfreezing E02004 would not solve the issue because it remains full. NetBackup also stores tape backups with other backups at the same retention level by default, so this retention-level mismatch matters for active tapes. E02003 is the only unassigned, available HCART2 backup tape. Placing it in the scratch pool allows NetBackup to move it automatically into server_tapes when the job requests new media. References/topics: Policy volume pool, Scratch volume pools, retention-level media selection, and status 96 media allocation troubleshooting.

The correct answer is C. During an image verification operation, NetBackup validates the backup image stored on backup storage by reading the backup volume and comparing what is present on that storage with the metadata recorded in the NetBackup catalog. Cohesity NetBackup documentation states that NetBackup verifies backup contents “by reading the volume and comparing its contents to what is recorded in the NetBackup catalog.” It also clarifies that this operation does not compare the backup image with the original client disk contents. Therefore, the validation scope is the readability and catalog consistency of the stored backup image, not a live comparison against the client file system and not a primary-server data check. This distinction is important operationally: image verification confirms that NetBackup can locate and read the blocks belonging to the backup image and that the stored image aligns with catalog records. It is not a restore test and does not prove that current client data is unchanged. References/topics: Catalog utility, Verify backup images, bpverify, NetBackup catalog image validation, and backup storage readability verification.

The irrelevant consideration is the file system folder depth. When selecting between NetBackup Accelerator and NetBackup FlashBackup for a file system containing millions of files, the key design factors are capacity, file-count/metadata handling, change processing, policy support, and file system/platform compatibility—not how deeply folders are nested. Cohesity documents that Accelerator performs an initial full backup and creates a track log, then identifies changed data by comparing track-log information against file-system information for each file; on NTFS/ReFS it can also use the Windows change journal. Cohesity also states that Accelerator track-log sizing is relative to file system size and number of backup files, with sizing formulas based on number of files and used disk space—not directory depth. FlashBackup is documented as combining raw-partition backup speed with individual file restore, and the FlashBackup/FlashBackup-Windows policy types are platform-specific, making the type of file system/client platform relevant. Storage capacity is also relevant because FlashBackup size reporting uses the mounted Windows disk volume or UNIX raw disk partition size. References/topics: Accelerator operation, track-log sizing, FlashBackup policy types, and large file-system backup planning.

( NetBackup storage units define the physical locations where backup data is stored, whether on disk or tape, and enable efficient storage utilization for backup data.)

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.