NetApp NS0-155 Online Practice Questions and Exam Preparation

NetApp NS0-155 Online Questions & Answers

• Question 161:

  Which three items are NFS resources for export? (Choose three.)

  A. aggregate
  B. directory/qtree
  C. file
  D. subnet
  E. volume
  B. directory/qtree
  C. file
  E. volume

  ---

  You can export any file path. Implicitly file paths are filesystem objects. You can export a directory, a qtree, a volume or even a file.

• Question 162:

  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.
  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.

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  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 state and 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 making destination 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 the destination. In most cases, this is the last

  snapshot transferred from the source to the destination, but it can be any snapshot which is on both the source and destination due to SnapMirror replication. If new data has been written to the destination since the newest common snapshot

  was created, that data will be lost during the resync operation.

• Question 163:

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

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

• Question 164:

  NTFS allows file access based on ___________.

  A. NT ACLs and SID.
  B. NT ACLs and UNIX permissions.
  C. SID and password.
  D. UNIX permissions.
  A. NT ACLs and SID.

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  http://hd.kvsconsulting.us/netappdoc/801docs/html/ontap/smg/GUID-866DD79D-D2A6-4FBA- B0BDA63560FECEFF.html

  In OnTap 8.0, when NTFS security style is used, only Windows style security objects are used. For CIFS clients, security is handled using Windows NTFS ACLs. For NFS clients, the NFS UID (user id) is mapped to a Windows SID (security identifier) and its associated groups. Those mapped credentials are used to determine file access, based on the NFTS ACL.

• Question 165:

  What is the maximum distance between a standard clustered pair at 2Bbps?

  A. 100 meters
  B. 10 meters
  C. 50 meters
  D. 500 meters
  D. 500 meters

• Question 166:

  Which command disables client access to Snapshot copies on a volume called flexvoll?

  A. cifs shares change flxvoll nosnap
  B. snap access flexvoll off
  C. vol options flexvoll nonsnapdir on
  D. vol options flexvoll snapdir off
  E. vol options flexvoll snapdir on
  C. vol options flexvoll nonsnapdir on

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  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_vol.1.html vol options nosnapdir [on|off] If this option is on, it disables the visible .snapshot directory that is normally present at client mount points, and turns off access to all other .snapshot directories in the volume. The default setting is off.

• Question 167:

  When you are setting up SnapMirror, which three are replication pre-requisites? (Choose three.)

  A. The source volume must be offline.
  B. SnapMirror must be licensed for each storage system.
  C. If you are replicating a volume, you must create a restricted volume to be used as the SnapMirror.
  D. The capacity of the SnapMirror destination must be greater than or equal to the capacity of the source destination volume.
  B. SnapMirror must be licensed for each storage system.
  C. If you are replicating a volume, you must create a restricted volume to be used as the SnapMirror.
  D. The capacity of the SnapMirror destination must be greater than or equal to the capacity of the source destination volume.

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  You need to fulfill a set of prerequisites before you can use SnapMirror:

  -

  You must purchase and enable the SnapMirror license. If the SnapMirror source and destination are on different systems, you must enable the SnapMirror license on each system.

  -

  For SnapMirror volume replication, you must create a restricted volume to be used as the destination volume.

  SnapMirror does not automatically create a volume. For information about how to create volumes, see the section on organizing data using volumes and qtrees in the Data ONTAP Storage Management Guide for 7-Mode.

  -

  For SnapMirror volume replication, the destination system must use a version of Data ONTAP that is the same as or later than that of the SnapMirror source system. https://library.netapp.com/ecmdocs/ ECMP1196991/html/GUIDED9C09EF-3F61-41FE-B8F1- 36356C5FEC5F.html

• Question 168:

  The qtree specified for ____ must not exist on the secondary system before you run the ____ command.

  A. pri_qtree_path, snapvault start
  B. sec_qtree_path, snapvault start
  C. pri_qtree_path, snapvault initialize
  D. sec_qtree_path, snapvault initialize
  B. sec_qtree_path, snapvault start

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  snapvault initialize is not a valid command http://backdrift.org/man/netapp/man1/na_snapvault.1.html snapvault start -r [options] -S [prim_system:] prim_qtree_path [sec_system:] sec_qtree_path pri_qtree_path is not a valid command

  http://hd.kvsconsulting.us/netappdoc/801docs/html/ontap/onlinebk/GUID-DB31E1F4-60A8-4F34- A1C4- 8F79754E4DE2.html

• Question 169:

  Which statement best describes the output of this command? sysstat -s 5

  A. Display the default output every five seconds and terminate after five counts.
  B. Display extended output every five seconds and print a summary after five counts.
  C. Display extended output every five seconds and print a summary upon termination.
  D. Display the default output every five seconds and print a summary upon termination.
  D. Display the default output every five seconds and print a summary upon termination.

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  http://backdrift.org/man/netapp/man1/na_sysstat.1.html -s Display a summary of the output columns upon termination, descriptive columns such as `CP ty' will not have summaries printed. Note that, with the exception of `Cache hit', the `Avg' summary for percentage values is an average of percentages, not a true mean of the underlying data. The `Avg' is only intended as a gross indicator of performance. For more detailed information use tools such as na_nfsstat, na_netstat, or statit.

• Question 170:

  What are two methods of protecting LUN overwrites using Snapshot copies on a volume with fractional reserve set to 0%? (Choose two)

  A. Snap Autodelete
  B. iGroup throttle
  C. LUN reset
  D. Volume AutoSize
  A. Snap Autodelete
  D. Volume AutoSize

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  https://communities.netapp.com/groups/chris-kranz-hardware-pro/blog/2009/03/05/fractional- reservation-- lunoverwrite

  From the article:

  "If you reduce the Fractional Reservation to 0, you need to make sure the rate of change is within the volume size, or you need to make sure the volume can auto-grow when required or even snap auto- delete to reduce the reserved blocks

  and free up space (although I am not a huge fan of snap auto-delete for various reasons)."