Cohesity COH285 Certification Exam Sample Questions and Answers

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The best approach to pass your Cohesity COH285 exam is to challenge and improve your knowledge. To test your learning and identify improvement areas with actual exam format, we suggest you practice with Premium Cohesity COH285 Certification Practice Exam. The practice test is one of the most important elements of your Cohesity Protection Professional - NetBackup and NetBackup Appliances exam study strategy to discover your strengths and weaknesses, to improve your time management skills and to get an idea of the score you can expect.

Cohesity COH285 (Protection Professional NetBackup Appliances) Sample Questions:

01. Backup jobs that write to one NetBackup Appliance media server have failed intermittently for two days. The appliance's own component health reports no fault, the appliance runs the same software level as the other appliances in the domain, and backups of the same clients to a different media server complete normally.
What should the administrator do next?
a) Change the Data Buffer defaults on the Manage > Host tab so the appliance's data path is stabilised
b) Connect through the IPMI web interface (Veritas Remote Management) to inspect the appliance's state out of band
c) Continue in NetBackup, reading the failing jobs' status details together with the storage unit behind them
d) Open a hardware case for the appliance, since intermittent job failures on one appliance usually mean a failing component
 
02. A primary server has been rebuilt on replacement hardware after a site failure, and its catalog has been recovered from the most recent catalog backup.
What has the administrator regained by completing the catalog recovery?
a) A new full image for each client, assembled on the media server from images that already exist
b) The domain's record of what was backed up, from which existing images are browsed and selected for restore
c) A second copy of every image at the recovery site, produced from the copies held at the original site
d) The most recent backup of each client, written back to the file systems and directories it came from
 
03. Overnight, every backup policy that does not name a storage unit or a storage unit group failed with status 2111. One policy completed normally; its schedule names a storage unit explicitly. Nothing was changed on the media servers, and the disk pools report ample free space.
What is the most likely cause?
a) The media servers lost host ID certificate trust with the primary server, leaving only one storage unit reachable.
b) The disk pools filled during the window, so jobs that had not already reserved space were rejected.
c) The storage units belong to a storage unit group in Failover mode whose first member was busy all night.
d) The storage units in the domain are flagged On Demand Only, so a job that names none of them has no eligible destination.
 
04. A storage lifecycle policy backs up to a local disk pool and then duplicates each image to a second pool. This morning the administrator finds that every backup job from last night completed successfully, while several jobs that ran afterwards ended non-zero. The failing jobs are duplication jobs, and each of them names that storage lifecycle policy.
What does the job type establish about this failure?
a) The backup jobs reported success prematurely, so the clients must be backed up again before any copy can be trusted.
b) The duplication jobs failed because the backup jobs still held the images open, and they will succeed at the next attempt.
c) The primary copies exist and are usable; only the second copy is missing, so the investigation belongs to the duplication destination.
d) Both the backup operation and the duplication operation failed, and the backup jobs' status will change when the run is reconciled.
 
05. To improve backup throughput on a media server, an administrator raised both the number of data buffers and the size of each buffer. Off-peak jobs, which run one or two at a time, behave normally. During the peak window, when many jobs write concurrently, the media server now runs short of memory and jobs begin to fail.
What explains the behaviour appearing only at peak?
a) The buffer change takes effect only after the media server's deduplication pool is rebuilt
b) The larger buffers are allocated only once the storage unit reaches its concurrent job limit
c) Buffer settings apply to restore operations, which the peak window runs alongside the backup jobs
d) Buffer memory is allocated for each concurrent job stream, so the change scales with concurrency
 
06. STIG rules are enabled on a NetBackup Appliance. A tuning task an administrator has scripted opens sixteen concurrent SSH sessions to the appliance so that it can gather data from several components in parallel, and some of those sessions are refused.
Which change lets the task complete while the appliance keeps its hardened posture?
a) Collect the same data through the IPMI web interface, which is not subject to the session rules
b) Rework the task to keep concurrent SSH sessions within the limit of ten that STIG enforces
c) Disable the STIG rules for the duration of the task, then enable them again afterwards
d) Raise the NetBackup job limit on the appliance so that more sessions may run concurrently
 
07. NetBackup client software on roughly sixty clients at a remote site must be brought to a newer level during a scheduled window. Those clients back up through a media server at that site. The administrator wants the work driven centrally, with no interactive login to the individual clients.
Which host is the VxUpdate deployment policy for this work created on and run from?
a) The Appliance Web Console of the appliance acting as the site's media server, where that host is administered.
b) Each client in turn, using a copy of the package staged locally on that client.
c) The primary server, which owns the domain's policies and schedules the work.
d) The media server at the remote site, since it is the host that moves the clients' backup data.
 
08. Following a suspected ransomware incident, an administrator must establish whether a stored backup image is safe to recover from before any restore is started.
Which NetBackup capability examines the content of the stored image to answer that question?
a) WORM storage
b) An Isolated Recovery Environment (IRE)
c) True Image Restore (TIR)
d) Anomaly Detection
e) Malware Detection
 
09. Long-term copies of MSDP-backed images are duplicated each month to a cloud target that was configured as its own cloud storage server with its own disk pool. The on-premises MSDP pool holds these images in about 40 TB, yet the cloud bucket has grown by close to the full front-end size with every monthly copy and now greatly exceeds that.
Which change addresses the growth?
a) Enable client-side deduplication for the clients whose images are being copied
b) Raise SLP.MIN_SIZE_PER_REPLICATION_JOB above its 8 GB default so fewer, larger jobs run
c) Run the monthly copies as optimized duplication to the cloud storage server
d) Configure the cloud bucket as MSDP Cloud Storage on the existing MSDP storage server
 
10. Deduplicated backups on a NetBackup Appliance are failing because the appliance's MSDP partition is full. Unallocated capacity is still available on the appliance itself, and the administrator has been asked to give the deduplication pool more room.
Which action addresses this, and where is it performed?
a) Resize the appliance's MSDP partition from the Appliance Web Console, using the free capacity on the appliance
b) Raise the storage unit's concurrent job limit in NetBackup so less data queues against the pool
c) Add a second disk pool in the NetBackup web UI, then group its capacity with the MSDP pool in a storage unit group
d) Expire older images from the image list in NetBackup until the deduplication pool reports free capacity on the MSDP partition

Solutions:

Question: 01

Answer: c

Question: 02

Answer: b

Question: 03

Answer: d

Question: 04

Answer: c

Question: 05

Answer: d

Question: 06

Answer: b

Question: 07

Answer: c

Question: 08

Answer: e

Question: 09

Answer: d

Question: 10

Answer: a

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