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Netapp NS0-155

NetApp Certified 7-Mode Data Administrator

Verified practice questions with detailed answers, clear explanations, and community discussion.

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Question 1 of 189

How can you "throttle" SnapValue updates and baseline transfers so that the primary or secondary is not transmitting data as it can?

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Correct answer: A

http://backdrift.org/man/netapp/man1/na_snapvault.1.html
The snapvault subcommands are:
start [ -r ] [ -k n ] [ -t n ] [ -w ] [-p {inet | inet6 unspec}] [ -o options ]
[ -S [primary_filer:]primary_path ] secondary_qtree
modify [ -k n ] [ -t n ] [-p {inet | inet6 | unspec}] [ -o options ] [ -S primary_filer:primary_path ] sec_ondary_qtree
The -k option sets the maximum speed at which data is transferred in kilobytes per second. It is used to throttle disk, CPU, and network usage. If this option is not set, the filer transmits data as fast as it can. The setting applies to the initial transfer as well as subsequent update transfers from the primary.

Question 2 of 189

Node 1 in a clustered pair detects that it has lost connectivity to one of its disk shelves. Node 1 is still up, but it cannot see one of its disk shelves. However, the partner node, Node 2, can see all of the Node 1s disk shelves. Which feature will cause Node 2 to monitor this error condition for a period of three minutes by default, and then forcibly take over Node 1 if the error condition persists?

Answer choices
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Correct answer: B

http://www.wafl.co.uk/cf/
http://wafl.co.uk/options/
Negotiated failover is a general facility which supports negotiated failover on the basis of decisions made by various modules. cf.takeover.on_disk_shelf_miscompare
This option allows negotiated takeover to be enabled when the cluster nodes detect a mismatch in disk shelf count. By default, this option is set to off.
This option is available only when cluster is licensed and changing the value on one filer automatically changes the value on the partner filer.

Question 3 of 189

In Data ONTAP, the root user is exempt from those two quotas: ______________. (Choose two)

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Correct answers: A, D

http://backdrift.org/man/netapp/man1/na_quota.1.html
User and group quotas do not apply to the root user or to the Windows Administrator account; tree quotas, however, do apply even to root and the Windows
Administrator account.

Question 4 of 189

Which two Volume SnapMirror (VSM) relationship are supported? (Choose two)

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Correct answers: A, C

Volume SnapMirror Interoperability Matrix.
Exam NS0-155: Question 4 - Image 1
Reference: SnappMirror Async Overview and Best Practices guide.
Exam NS0-155: Question 4 - Image 2 AC

Question 5 of 189

An aggregate is composed of twelve 36-Gigabyte disks. A drive fails and only 72-Gigabyte spare disks are available. Data ONTAP will then perform what action.

Answer choices
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Correct answer: B

https://library.netapp.com/ecmdocs/ECMP1196986/html/GUID-8A91F6A2-61B8-42C3-AEAB7D5AA9BBE9CF.html
If a disk fails and no hot spare disk that exactly matches the failed disk is available, Data ONTAP uses the best available spare. Understanding how Data ONTAP chooses an appropriate spare when there is no matching spare enables you to optimize your spare allocation for your environment.
Data ONTAP picks a non-matching hot spare based on the following criteria (and more; in the link above):
If the available hot spares are not the correct size, Data ONTAP uses one that is the next size up, if there is one.
The replacement disk is downsized (aka right sized) to match the size of the disk it is replacing; the extra capacity is not available.

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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
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Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
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Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
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Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
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Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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