[Free] Download New Updated (December) Network Appliance NS0-155 Exam Questions 1-10

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QUESTION 1

Which statement describes the results of the SnapMirror resynce command?

 

A.

Resynchronization finds the newest common snapshot shared by the two volumes or qtree, and removes all newer information on the storage system on which the command is run.

B.

Resynchronization will cause the loss of all data written to the destination after the original base snapshot was made.

C.

Resynchronization will update the snapshot on the destination filer.

D.

Resynchronization will update the snapshot on the source filer.

 

Correct Answer: A

Explanation:

https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_snapmirror.1.html

 

snapmirror resync

[ -n ] [ -f ] [ -S source ] [ -k kilobytes ] [ -s src_snap ] [ -c create_dest_snap ] [ -w ] destination

Resynchronizes a broken-off destination to its former source, putting the destination in the snapmirrored stateand making it ready for update transfers. The resync command must be issued on the destination node.

 

The resync command can cause data loss on the destination. Because it is effectively makingdestination a replica of the source, any edits made to the destination after the break will be undone.

 

For formerly mirrored volumes, the resync command effectively performs a SnapRestore (see na_vol

(1)) on the destination to the newest snapshot which is common to both the source and thedestination. In most cases, this is the last snapshot transferred from the source to the destination, butit can be any snapshot which is on both the source and destination due to SnapMirror replication. Ifnew data has been written to the destination since the newest common snapshot was created, thatdata will be lost during the resync operation.

 

 

QUESTION 2

To determine the version of Data ONTAP in which a bug has been fixed, use the NOW site _______ utility. (Choose two.)

 

A.

AutoSupport

B.

Bugs Online

C.

NetApp Diagnostics

D.

Release Comparison

E.

System Configuration Guide

 

Correct Answer: BD

Explanation:

Thisquestionis out of date, but its still on the exam as of Sept2013! NOW has been replaced with support.netapp.com.

 

You should be very familiar with what AutoSupport does. Also if you have done any research, you know thatthe System Configuration Guide is an invaluable tool that you will use regularly. Neither of those are related tobugs.

 

Bugs Online (BOL) is located at http://support.netapp.com/NOW/cgi-bin/bol/ Bugs Online provides a suite oftools to help manage and resolve your bug issues.

The Release Bug Advisor is located at http://support.netapp.com/NOW/cgi-bin/relrec

 

There is also a Version Comparison tool available at https://communities.netapp.com/docs/DOC-8168/diff?secondVersionNumber=8

 

 

QUESTION 3

Five minutes ago, you performed a single file SnapRestore on a large NFS file. 40% of your NFS users are now complaining about getting “stale file handles” for the file. Which is the most likely cause of this problem, and the best procedure to correct it?

 

A.

This might be due to an NFS storage system and client mismatch. Check to see that these users have the same version of the NFS client that existed at the time the snapshot was taken.

B.

NFS users why try to access a reverted file without first reopening it might get a “stale file handle” error message. Have the users try to reopen the file and see if the problem is resolved.

C.

After a single file SnapRestore, NFS users have to reboot their systems. Have them reboot their systems.

D.

These users are on a different subnet from the others. Start troubleshooting by checking their subnet.

 

Correct Answer: B

Explanation:

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-35C9A4
BA-02BA-4965-A366-698C1299E29D.html

 

Reverting a file to a selected Snapshot copy

Using snap restore to revert a single file to a selected Snapshot copy is practical when the file is so large thatyou cannot copy the previous file version from the Snapshot copy to the active file system.

Before you beginEnsure that you notify the network users before reverting a file so that they know that the current data in the filewill be replaced by that of the selected Snapshot copy.

 

Note:

NFS users who try to access a reverted file without first reopening it might get a stale filehandle error message after the volume reversion.

 

 

QUESTION 4

When will a Volume SnapMirror (VSM) from a 64-bit source to a 32-bit destination volume fail?

 

A.

When the 64-bit volumes has Volume Guarantee disabled

B.

When the 64-bit volume has compression enabled

C.

When the 64-bit volume has FlexShare enabled

D.

When the 64-bit volume has ASIS enabled

 

Correct Answer: B

Explanation:

https://library.netapp.com/ecmdocs/ECMP1196986/html/GUID-87340429-8F4A-4AA6-B081-0F5040089C78.html

Data compression requires 64-bit aggregates.

 

 

 

 

 

QUESTION 5

Data ONTAP uses inodes in an active file system to reference ___________.

 

A.

qtrees

B.

disk blocks

C.

file segments

D.

Snapshot copies

 

Correct Answer: B

Explanation:

All data, whether file or block-based, resides in 4KB blocks on disk. A group of related blocks make up a file.To accommodate different file sizes, the WAFL filesystem describes each file with reference pointers calledinodes.

https://communities.netapp.com/servlet/JiveServlet/previewBody/5027-102-1-6953/PS%20Tech%20Note%20018%20-%20maxfiles.pdf

 

 

QUESTION 6

Which three are valid LUN commands? (Choose three)

 

A.

lun clone

B.

lun copy

C.

lun move

D.

lun rename

E.

lun snap

 

Correct Answer: ACE

Explanation:

https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_lun.1.html

 

The following commands are available in the lun suite:

 

clip_image002

 

 

QUESTION 7

Which two are Data ONTAP commands for creating LUNs on a storage system? (Choose two.)

 

A.

lun create

B.

lun config

C.

lun make

D.

lun setup

 

Correct Answer: AD

Explanation:

https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_lun.1.html

 

The following commands are available in the lun suite:

 

clip_image004

 

Easy to use interactive mechanism for setting up initiator groups, LUNs, and mapping configuration.

 

 

QUESTION 8

Which statement is true about expanding an aggregate from 32-bit to 64-bit in place?

 

A.

All aggregates are automatically converted from 32-bit to 64-bit with the Data ONTAP 8.1 upgrade.

B.

The expansion is triggered by an aggr convert command.

C.

The expansion is triggered by adding disks to exceed 16 TB.

D.

The 32-bit aggregates are degraded and must be Volume SnapMirrored to a new 64-bit aggregates with Data ONTAP 8.1 upgrade.

 

Correct Answer: C

Explanation:

http://www.ntapgeek.com/2011/12/how-in-place-expansion-works.html

To upgrade an aggregate in-place, the only available method is to add disks to expand the aggregate to>16TB.

 

 

QUESTION 9

When using a Protection Manager policy to manage Open systems SnapValut backups on a UNIX server, which three valid objects to include in the data set? (Choose three)

 

A.

The entire client

B.

A directory

C.

A file

D.

A qtree

 

Correct Answer: ABC

 

 

QUESTION 10

In a tape environment after a SnapRestore reversion of a volume, incremental backup and restore operations on the file or volume cannot rely on the timestamps to determine what data needs to be backed up or restored. Which course of action ensures correct incremental backups?

 

A.

Perform a base-level backup of the volume after you restore it.

B.

Reboot the storage system to reset timestamps back to their original times before the reversion.

C.

Take a new snapshot of the volume to create new base-level timestamps for the incremental backup.

D.

Take a new snapshot of the volume to create new base-level timestamps for the incremental backup, and then perform a base-level backup of the volume after you restore it.

 

Correct Answer: A

Explanation:

A baseline (aka “full”) backup is always required before valid incremental backups can be made.

 

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