NetApp New Release NS0-155 Questions & Answers

• Question 11:

  Identify the two commands that could be entered on a system with a SnapMirror source. (Choose two)

  A. snapmirror update

  B. snapmirror status

  C. snapmirror initialize

  D. options snapmirror.access all

  Correct Answer: BD

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

  http://www.uow.edu.au/~blane/netapp/ontap/cmdref/man1/na_options.1.htm update [ -S source ] [ -k kilobytes ] [ -s src_snap ] [ -c create_dest_snap ] [ -w ] destination For asynchronous mirrors, an update is immediately started from the source to the destination to update the mirror with the contents of the source.

  For synchronous mirrors, a snapshot is created on the source volume which becomes visible to clients of the destination volume.

  The update command must be issued on the destination node.status [ -l | -t | -q ] [ volume | qtree ... ] Reports status of all the SnapMirror relationships with a source and/or destination on this node. This command also reports whether SnapMirror is on or off. If any volume or qtree arguments are given to the command, only the SnapMirror relationships with a matching source or destination will be reported. If the argument is invalid, there won't be any status in the output.initialize [ -S source ] [ -k kilobytes ] [ -s src_snap ] [ -c create_dest_snap ] [ -w ] destination Starts an initial transfer over the network. An initial transfer is required before update transfers can take place. The initialize command must be issued on the destination node. If the destination is a volume, it must be restricted (see na_vol(1) for information on how to examine and restrict volumes). If the destination is a qtree, it must not already exist (see na_qtree(1) for information on how to list qtrees). If a qtree already exists, it must be renamed or removed (using an NFS or CIFS client), or snapmirror initialize to that qtree will not work.snapmirror.access

  This option determines which SnapMirror destination filers may initiate transfers, and over which network interfaces. When set to "legacy", SnapMirror uses the older snapmirror.allow to determine access. The option value is a string containing an expression which provides the access filter. An example of the options command for snapmirror.access is options snapmirror.access host=toaster,fridge. The default value is "legacy". See na_snapmirror(1) , na_snapmirror.allow

  (5) and na_protocolaccess(8) for more details.

  The snapmirror.allow file exists on the source filer used for SnapMirror.

• Question 12:

  Which three configurations would increase data transfer rates in a volume SnapMirror environment for traditional volumes?

  A. The destination volumes are flexible volumes.

  B. The destination and source contain disks of the same size.

  C. The destination and the source contain RAID groups of the same size.

  D. The destination and source contain the same number of raid groups.

  E. The destination and source storage systems are no father than 30 meters apart.

  Correct Answer: BCD

  By aligning the performance of the source and destination, optimal data transfer (aka replication) rates can be attained. Flexvols don't matter, and there is no measurable difference between the performance of a network over a 30m or 3m cable.

• Question 13:

  Which three steps should be taken when troubleshooting a "stale nfs file handle" response to a NFS mount request on a Solaris system? (Choose three)

  A. check the client's fstab

  B. check the /etc/sd.conf file on the client

  C. check show mount -e to the storage system from the client

  D. check for connectivity to the storage system from the client

  E. check the output of the exportfs command on the storage system

  Correct Answer: ADE

  The fstab file reflects the defined filesystem mount paths (including NFS mounts). Always check network connectivity when a problem arises with a network service. The exportfs command will display the active exports on the storage system.

• Question 14:

  Which iSCSI security method encrypts data between the initiator and the target?

  A. IPSec

  B. CHAP

  C. LUN masking

  D. Header and Data Digests

  Correct Answer: A

  IPSec is an encryption transport that can be used to secure any IP traffic including iSCSI.

• Question 15:

  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

  Correct Answer: A

  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 16:

  What command would create a LUN clone named lun0.clone from the LUN lun0 on the volume vol2?

  A. lun clone start create /vol/vol2/lun0.clone -b /vol/vol2/lun0 snap_recent

  B. lun clone create /vol/vol2/lun0.clone -b /vol/vol2/lun0 snap_recent

  C. lun clone create /vol/vol2/lun0 -b /vol/vol2/lun0.clone snap_recent

  D. lun clone create /vol/vol2/lun0.clone -b /vol/vol2/lun0 -s snap_recent

  Correct Answer: B

  http://backdrift.org/man/netapp/man1/na_lun.1.html lun clone create clone_lunpath [ -o noreserve ] -b parent_lunpath parent_snap

• Question 17:

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

  A. file quotas

  B. group quotas

  C. root quotas

  D. tree quotas

  E. user quotas

  Correct Answer: BE

• Question 18:

  In Data ONTAP, both the Microsoft Windows Administrator and root are exempt from user and group quotas, but not from tree quotas.

  A. True

  B. False

  Correct Answer: A

  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 19:

  The quota resize command only affects existing /etc/quotas file target entries, not new quota entries.

  A. True

  B. False

  Correct Answer: A

  http://backdrift.org/man/netapp/man1/na_quota.1.html

  quota resize volume Adjusts currently active quotas in the specified volume to reflect changes in the /etc/quotas file. For instance, if you edit an entry in /etc/quotas to increase a user's quota, quota resize will cause the change to take effect. The volume name may be omitted if the system has only one volume. quota resize can be used only when quotas are already on. Because it does not rescan the file system to compute usage, quota resize is faster than turning quotas off and then on again. quota resize will apply all updated entries in /etc/quotas; however, it will generally ignore newly added entries. A newly added entry will only take effect if the corresponding user or group has an active quota as a result of updating a file subject to default quotas.

• Question 20:

  Which command shares out the directory /vol/vol2/home using the share name "netapp"?

  A. cifs shares -add /vol/vol2 netapp

  B. cifs shares -add /vol/vol2/home/netapp

  C. cifs shares -add netapp vol/vol2

  D. cifs shares -add netapp /vol/vol2/home

  Correct Answer: D

  https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_cifs_shares.1.html cifs shares -add sharename path