NetApp NS0-155 Online Practice Questions and Exam Preparation

NetApp NS0-155 Online Questions & Answers

• Question 91:

  Which are three valid data protection solutions? (Choose three.)

  A. SnapVault toVolume SnapMirror
  B. SnapVault toVolume SnapMirror to SnapVault
  C. SnapVault toVolume SnapMirror toVolume SnapMirror
  D. Volume SnapMirror to SnapVault
  A. SnapVault toVolume SnapMirror
  C. SnapVault toVolume SnapMirror toVolume SnapMirror
  D. Volume SnapMirror to SnapVault

  ---

  http://www.redbooks.ibm.com/redpapers/pdfs/redp4268.pdf When you are using SnapVault in combination with Volume SnapMirror, it is important to understand their relationship with Snapshot. You cannot utilize SnapVault to protect a Volume SnapMirror destination, because SnapVault and SnapMirror both use the same Snapshot copies; they cannot run simultaneously. Schedules must be managed to accommodate the interlock that keeps SnapVault and SnapMirror from stepping on each other.

• Question 92:

  Which changes the NDMP password on the Open System SnapVault agent?

  A. password
  B. password
  C. svpasswd
  D. svpassword
  D. svpassword

  ---

  https://kb.netapp.com/support/index?

  Page=contentandid=2010134andactp=LIST_RECENTandviewlocale=en_USandsearchid=1296570465177 The svpassword command is available on the OSSV host as part of the agent binaries in the path \netapp\snapvault\bin.

• Question 93:

  If you were troubleshooting and wanted to look at SnapMirror log files, what is the path to these files?

  A. /vol/vol0/etc/log/snaplog/
  B. /vol/vol0/etc/snapmirror/
  C. /vol/vol0/etc/snaplog/
  D. /vol/vol0/etc/log/
  D. /vol/vol0/etc/log/

  ---

  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_snapmirror.1.html The root volume is always vol0 and etc is contained therein. When exporting the root volume via NFS, the path is/vol/vol0; so the full path to snapmirror log

  files is /vol/vol0/etc/log.

  /etc/log/snapmirror.

  This file logs SnapMirror activity. Log file for current week. /etc/log/snapmirror.[0-5] SnapMirror log files for previous weeks.

• Question 94:

  Which keyword alone can be used to convert an asynchronous SnapMirror relationship to a synchronous SnapMirror relationship?

  A. sync
  B. cksum
  C. src_con
  D. outstanding
  A. sync

  ---

  To convert an asynchronous SnapMirror relationship to a synchronous SnapMirror relationship, on the administration host, edit the snapmirror.conf file on the destination system to change the schedule to sync. https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-A78BDBC9-610B-4555-A2DE- CE6861D92614.html

• Question 95:

  The root admin on the UNIX box receives an "Access Denied" message when he attempts to access a newly mounted qtree. What's the most likely cause of this error?

  A. The qtree is missing from the /etc/hosts file.
  B. NFS is turned off on the storage system.
  C. The qtree is set to ntfs security style.
  D. The qtree has not been exported.
  C. The qtree is set to ntfs security style.

  ---

  http://hd.kvsconsulting.us/netappdoc/801docs/html/ontap/smg/GUID-866DD79D-D2A6-4FBA- B0BDA63560FECEFF.html https://library.netapp.com/ecmdocs/ECMP1196891/html/GUID-F6304830-B124-40A5-95D6- C646AA85E9E0.html Only hostnames and IPs are referenced in /etc/hosts, so A is incorrect. The question states that the qtree was mounted, and B and D would preclude this so they are incorrect. You need to set a qtree to mixed or unix security style to support

  UNIX users.

• Question 96:

  Which command disables client access to Snapshot copies on a volume called flexvol1?

  A. cifs shares -change flexvol1 -nosnap
  B. snap access flexvol1 off
  C. vol options flexvol1 nosnapdir on
  D. vol options flexvol1 snapdir off
  E. vol options flexvol1 snapdir on
  C. vol options flexvol1 nosnapdir on

• Question 97:

  Which three statements apply to the SnapMirror visibility_interval argument? (Choose three.)

  A. The default interval value is five minutes.
  B. The smallest interval value supported is 30 seconds.
  C. This variable controls the view of the data on the destination system.
  D. By setting a value, you specify the amount of time before an automatic snapshot is created on the source volume that is synchronously mirrored.
  B. The smallest interval value supported is 30 seconds.
  C. This variable controls the view of the data on the destination system.
  D. By setting a value, you specify the amount of time before an automatic snapshot is created on the source volume that is synchronously mirrored.

  ---

  http://www.netapp.com/us/media/tr-3326.pdf http://backdrift.org/man/netapp/man5/na_snapmirror.conf.5.html http://hd.kvsconsulting.us/ netappdoc/733docs/html/ontap/onlinebk/GUID-47724B21-7C7E-4AC9- A497-9505B42C27AF.html

  With SnapMirror Sync and SnapMirror Semi-Sync, changes to the source volume do not show up immediately on the destination volume, even though the changes have been replicated. The changes are first shown after the source system creates an automatic Snapshot copy of the source volume. Snapshot copies created on the source volume are immediately propagated to the destination volume. The automatic Snapshot copies are created every three minutes by default.

  To change the interval for automatic Snapshot copies, change the visibility_interval in the snapmirror.conf file; however, performance can degrade if set to a smaller interval because frequent Snapshot copies cause additional processing such as cache consistency checking on the destination system.

  There is also a disadvantage in setting this to a large value. When the connection between the systems has an outage and SnapMirror goes into asynchronous mode, SnapMirror uses the last common Snapshot copy to transition into synchronous mode. This means that all data from the last valid common Snapshot copy will need to be replicated from the source to the destination storage system. If the visibility_interval is set to a large value, a large amount of data might have to be transferred and it might take longer time for SnapMirror to transition into synchronous mode. For these reasons, keep the default value of three minutes.

  visibility_interval

  The value for this argument is a number optionally followed by the suffixes: s (seconds), m (minutes) or h (hours). If a suffix is not specified, value is interpreted as seconds. This argument controls the amount of time before an automatic

  snapshot is created on the source volume that is synchronously mirrored. The value is the number of seconds between automatically created snapshots. The default value is 3 minutes. A small number here can negatively affect the

  performance of the mirror. This argument is ignored for asynchronous mirrors.

  visibility_interval={xs | xm | xh}

  Determines the amount of time before an automatic Snapshot copy is created on the source volume that is being replicated using synchronous or semi-synchronous SnapMirror. When replicating synchronously or semisynchronously, using

  SnapMirror, changes to the source volume do not show immediately on the destination volume, even though the changes have been replicated. The changes are shown only after the source system takes an automatic Snapshot copy of the

  source volume. This event occurs every three minutes by default.

  You can change the interval for automatic Snapshot copies, but performance can degrade if you set smaller intervals because Snapshot copies are taken more often. The smallest interval you can set is 30 seconds.

  Note: The s, m, and h suffixes specify seconds, minutes, and hours, respectively.

• Question 98:

  Which NetApp Virtual Storage Tier component works at the host level?

  A. Flash Pool
  B. Flash Disk
  C. Flash Accel
  D. Flash Cache
  E. Flash IO
  C. Flash Accel

  ---

  http://www.netapp.com/us/system/pdf-reader.aspx?m=ds-3366.pdfandcc=us Flash Accel utilizes server- based flash storage as cache for the host.

• Question 99:

  For each Open Systems platform directory to be backed up to the SnapVault secondary storage system you must execute _____________.

  A. An initial baseline copy
  B. A temporary copy
  C. An incremental copy
  D. A scheduled update copy
  A. An initial baseline copy

  ---

  https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-EEBC8B52-BEA9-4B49-874F- 7EC78D3F602E.html

  Each open systems platform, when prompted by the secondary system, transfers initial base images of specified directories to qtree locations on the secondary system. Note: There are no primary-side Snapshot copies in Open Systems SnapVault.

• Question 100:

  Is NetApp storage Encryption supported in Data ONTAP 8.1.1 Cluster-Mode?

  A. No, but you can file a PVR to request support.
  B. No. it is targeted for a future release of Data ONATP.
  C. Yes, only with a special license installed.
  D. Yes, it has been supported since 8.0.1.
  D. Yes, it has been supported since 8.0.1.

  ---

  http://www.ntapgeek.com/2011/03/netapp-storage-encryption-available.html March, 2011: "With the recent release of Data ONTAP 8.0.1, NetApp now offers full disk encryption to prevent unauthorized access to data at rest."