NetApp NS0-155 Online Practice Questions and Exam Preparation

NetApp NS0-155 Online Questions & Answers

• Question 1:

  Which NetApp Storage Tier component works aggregate-wide on a FAS controller?

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

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  http://www.netapp.com/us/system/pdf-reader.aspx?m=ds-3177-0512.pdfandcc=us http://www.netapp.com/ us/products/platform-os/flashpool.aspx Flash Pool utilizes SSDs to enhance performance of disk aggregates. Flash Cache is a

  controller-attached PCIe intelligent caching solution.

  Flash Accel is a host-attached caching solution.

  Flash Disk and Flash IO are ambiguous terms.

• Question 2:

  Protection Manager has policies that allow for tape-based protection as well as disk-based protection.

  A. True
  B. False
  B. False

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  https://library.netapp.com/ecm/ecm_download_file/ECMM1278633

• Question 3:

  You receive an error message from an iSCSI host stating that there is an authentication error. Which command would troubleshoot the failure?

  A. iscsi security show
  B. iscsi security generate
  C. iscsi show authentication
  D. iscsi security authentication
  A. iscsi security show

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  https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_iscsi.1.html

  iscsi security show Display the default authentication and all the initiator specific authentication information. Hint: Remember that the iscsi command is mostly structured "iscsi noun verb", unlike the fcp command which is structure "fcp verb noun". Example: iscsi initiator show, fcp show initiator.

• Question 4:

  When Data ONTAP creates a weekly, nightly, or hourly snapshot, the value of n (as shown by the snap list command) is adjusted for all the weekly.n, nightly.n, or hourly.n Snapshot copies. The higher the value of n, the _________ the snapshot.

  A. older
  B. newer
  C. more important
  D. least important
  A. older

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  ...where n is an integer. The most recent weekly Snapshot copy is weekly.0, weekly.1 is the next most recent weekly Snapshot copy, and so on. https://library.netapp.com/ecmdocs/ECMP1113957/html/GUID-1D3B0C7D-D94E-43A3-9091- 5E76003E16EB.html

• Question 5:

  In a fabric-attached MetroCluster, a "site failure" is described as a __________.

  A. failure of the Inter-Switch-Links (ISL)
  B. failure of the interconnect cable
  C. complete failure of the primary controller and disk shelves
  D. malfunction of the Fibre Channel adapter on the cluster node
  C. complete failure of the primary controller and disk shelves

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  http://argoat.net/Blog/?p=1466

• Question 6:

  Which two commands on the storage system allow you to gather detailed statistics about network interfaces, including basic information about network connections? (Choose two.)

  A. ifstat -a
  B. netdiag -n
  C. netstat -i
  D. sysstat 1
  A. ifstat -a
  C. netstat -i

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  ifstat -a provides detailed statistics (multiple pages) about all network interfaces. netstat -i provides a list of connections and open network sockets (listeners). netdiag -n will perform a diagnostic but does not provide detailed statistics about networking. sysstat 1 will provide performance statistics but not detailed statistics about networking.

• Question 7:

  Which two operations can be performed with the SnapDrive for windows graphical user interface?

  A. Create volume
  B. Create Snapshot copies
  C. Create File
  D. Create Disk
  B. Create Snapshot copies
  D. Create Disk

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  https://library.netapp.com/ecm/ecm_download_file/ECMM1278920

  What SnapDrive does

  SnapDrive software integrates with the Windows Volume Manager so that NetApp filers can serve as virtual storage devices for application data in Windows 2000 Server and Windows Server 2003 environments.

  SnapDrive is dependent on the virtual disk service. The virtual disk service must be started on the host prior to installing SnapDrive. SnapDrive manages virtual disks (LUNs) on a NetApp filer, making these virtual disks available as local disks

  on Windows hosts. This allows Windows hosts to interact with the virtual disks just as if they belonged to a directly attached redundant array of independent disks (RAID).

  SnapDrive provides the following additional features:

  It enables online storage configuration, virtual disk expansion, and streamlined management. It integrates NetApp Snapshot technology, which creates point-in-time images of data stored on virtual disks. It works in conjunction with

  SnapMirror?software to facilitate disaster recovery from either asynchronously or synchronously mirrored destination volumes.

• Question 8:

  Which three /etc/snapmirror.conf entries will support synchronous or semi-synchronous SnapMirror?

  A. FilerA:source_vol FilerB:destination_vol visibility_interval = lhr, outstanding = 3ms, cksum=crc32 syns
  B. FilerA:source_vol FilerB:destination_vol 0-55/5 * * *
  C. FilerA:source_vol FilerB:destination_vol sync
  D. FilerA:source_vol FilerB:destination_vol outstanding=3s sync
  A. FilerA:source_vol FilerB:destination_vol visibility_interval = lhr, outstanding = 3ms, cksum=crc32 syns
  C. FilerA:source_vol FilerB:destination_vol sync
  D. FilerA:source_vol FilerB:destination_vol outstanding=3s sync

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  https://library.netapp.com/ecmdocs/ECMP1196979/html/man5/na_snapmirror.conf.5.html Each relationship entry of the /etc/snapmirror.conf file is a single line containing space-separated fields.

  The entry has this format:

  Source destination arguments schedule schedule

  This is the schedule used by the destination node for updating the mirror. It informs the SnapMirror scheduler when transfers will be initiated. The schedule field can contain the word sync to specify fully synchronous mirroring, semi-sync to

  specify semi-synchronous mirroring, or a cron-style specification of when to update the mirror.

  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.

  Outstanding (deprecated)

  This argument controls the performance versus synchronicity trade-off for synchronous mirrors. The value for this argument is a number followed by the suffixes: ops (operations), ms (milliseconds) or s (seconds). Setting a value less than 10s

  configures the mirror to run in fully synchronous mode. Setting a value greater than or equal to 10s configures the mirror to run in semi-synchronous mode. This argument is ignored for asynchronous mirrors. Please note that this is a

  deprecated option. Use the schedule field to specify the synchronous mode for the mirror.

  cksum

  This controls which checksum algorithm is used to protect the data transmitted by SnapMirror. Currently supported values are "none", "crc32c", and "crc32c_header_only". The value "crc32c_header_only" has been added only for volume

  SnapMirror and is not supported for synchronous SnapMirror and qtree SnapMirror.

• Question 9:

  What security mechanism can an administrator use on an OSSV client to set permissions allowing backups to a SnapVault secondary system?

  A. Via /etc/hosts.equiv file
  B. QSM access list modifiable via svconfigurator
  C. Contents inside a file called access and located in OSSV /snapvault/etc
  D. MD5 based authentication between SnapVault primary and secondary, with changeable password
  B. QSM access list modifiable via svconfigurator

• Question 10:

  After issuing the aggr split aggr0/plex0 aggrNew command ____________.

  A. there is a new plex called aggrNew
  B. there are two new plexes, plex0 and plexNew
  C. there is a new mirrored aggregate called aggrNew
  D. there are two unmirrored aggregates, aggr0 and aggrNew
  E. flexible volumes are evenly split between aggr0 and aggrNew
  D. there are two unmirrored aggregates, aggr0 and aggrNew

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  https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_aggr.1.html aggr split aggrname/ plexname new_aggrname

  Removes plexname from a mirrored aggregate and creates a new unmirrored aggregate named new_aggrname that contains the plex. The original mirrored aggregate becomes unmirrored. The plex to be split from the original aggregate

  must be functional (not partial), but it could be inactive, resyncing, or out-ofdate.

  Aggr split can therefore be used to gain access to a plex that is not up to date with respect to its partner plex, if its partner plex is currently failed.

  If the aggregate in which plexname resides is embedded in a traditional volume, aggr split behaves identically to vol split. The new aggregate is embedded in a new traditional volume of the same name. The aggregate in which plexname

  resides must contain exactly one flexible volume, aggr split will by default rename the flexible volume image in the split-off plex to be the same as the new aggregate. If the original aggregate is restricted at the time of the split, the resulting

  aggregate will also be restricted. If the restricted aggregate is hosting flexible volumes, they are not renamed at the time of the split. Flexible volumes will be renamed later, when the name conflict is detected while bringing an aggregate

  online. Flexible volumes in the aggregate that is brought online first keep their names. That aggregate can be either the original aggregate, or the aggregate resulting from the split. When the other aggregate is brought online later, flexible

  volumes in that aggregate will be renamed.

  If the plex of an aggregate embedded within a traditional volume is offline at the time of the split, the resulting aggregate will be offline. When splitting a plex from an aggregate that hosts flexible volumes, if that plex is offline, but the aggregate

  is online, the resulting aggregate will come online, and its flexible volumes will be renamed. It is not allowed to split a plex from an offline aggregate. A split mirror can be joined back together via the -v option to aggr mirror.