NetApp NetApp Certifications NS0-155 Questions & Answers

• Question 101:

  A snapshot is a frozen, read-only image of the entire Data ONTAP active file system that reflects the state of the ____________ at the time the snapshot was created.

  A. qtrees

  B. volume

  C. directory

  D. storage system

  Correct Answer: B

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

  Snapshots can be made of volumes or aggregates; most commonly the former. The question refers to a file system, or more specifically a volume. You cannot snapshot directories or qtrees alone.

• Question 102:

  Physical Reallocation of a SnapMirror source volume increases the amount of data to transfer for the next SnapMirror update.

  A. True

  B. False

  Correct Answer: B

  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_reallocate.1.html Using the -p option may reduce the extra storage requirements in a flexible volume when reallocation is run on a volume with snapshots. It may also reduce the amount of data that needs to be transmitted by SnapMirror on its next update after reallocation is performed on a SnapMirror source volume.

• Question 103:

  Which command is used to set the configuration of an Ethernet network interface?

  A. ifconfig

  B. ifstat

  C. netstat - i

  D. sysconfig - v

  Correct Answer: A

  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_ifconfig.1.html ifconfig - Configures network interface parameters.

• Question 104:

  What are three true statements about physical reallocation of data added in ONTAP 7.3? (Choose three.)

  A. Use reallocate -p pathname to run the physical reallocate.

  B. Use aggr reallocate -p pathname to run the physical reallocate.

  C. Reinitialize any SnapMirror relationship for the new physical geometry.

  D. Volume Snapshots do not need to be deleted for the reallocate to run effectively.

  E. Dont run it on files, volumes, and LUNs that are in an aggregate created by a version of ONTAP earlier than 7.2.

  Correct Answer: ADE

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

  The -p option requests that reallocation of user data take place on the physical blocks in the aggregate, but the logical block locations within a flexible volume are preserved. Aggregate reallocation is not supported on aggregates created prior to Data ONTAP 7.2. Using the -p option may reduce the extra storage requirements in a flexible volume when reallocation is run on a volume with snapshots. It may also reduce the amount of data that needs to be transmitted by SnapMirror on its next update after reallocation is performed on a SnapMirror source volume.

• Question 105:

  Which command displays the statistics for Ethernet network interfaces?

  A. ifconfig

  B. ifstat

  C. sysconfig

  D. sysstat

  Correct Answer: B

  https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_ifstat.1.html ifstat - display device-level statistics for network interfaces

• Question 106:

  Which set of commands should be used for troubleshooting Ethernet connectivity problems from the storage system console?

  A. ifstat, netdiag

  B. perfstat, tracert

  C. sysconfig - cr, sysstat

  D. dish shm_stats, sysstat

  Correct Answer: A

  https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_ifstat.1.html http://backdrift.org/man/ netapp/man1/na_netdiag.1.html ifstat - display device-level statistics for network interfaces netdiag - perform network diagnostics

• Question 107:

  These are three methods of creating a LUN:

  *

  lun create

  *

  lun map

  *

  lun setup

  A.

  True

  B.

  False

  Correct Answer: B

  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_lun.1.html The following commands are available in the lun suite:

  

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

  lun map [ -f ] lun_path initiator_group [ lun_id ]

  Maps a LUN to all the initiators in the supplied group

• Question 108:

  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

  https://library.netapp.com/ecmdocs/ECMP1196979/html/man1/na_lun.1.html The following commands are available in the lun suite:

  

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

• Question 109:

  In a Fibre Channel configuration, the host's HBA is referred to as the ___________, and the storage system's HBA is referred to as the __________ .

  A. initiator, target

  B. primary, secondary

  C. secondary, primary

  D. target, initiator

  Correct Answer: A

  http://en.wikipedia.org/wiki/SCSI_initiator_and_target

• Question 110:

  Before running lun setup on the storage system, you must first create the igroup to which the initiator will be attached.

  A. True

  B. False

  Correct Answer: B

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

  lun setup

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