NetApp New Release NS0-155 Questions & Answers

• Question 21:

  NetApp recommends that Fibre Channel switches that have both disk and tape connected to them should have separate zones created for each.

  A. True

  B. False

  Correct Answer: A

  http://www.brocade.com/downloads/documents/white_papers/Zoning_Best_Practices_WP-00.pdf

  Separating the disk and tape devices into separate zones prevents disk RSCNs from impacting tape devices, which tend to be more sensitive to RSCNs. Best practice is to zone each initiator WWPN to each target WWPN individually.

• Question 22:

  Which two commands would help you troubleshoot a LUN that cannot be accessed by a host? (Choose two.)

  A. fcp show wwpn

  B. fcp wwpn

  C. igroup show

  D. lun show -err

  E. lun show -v

  Correct Answer: CE

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

  igroup show [ -v ] [ initiator_group ] Displays the nodes in an initiator group and their aliases, set with the fcp wwpnalias command. If no initiator_group is specified, the members of all initiator groups are displayed. You can use the -v option to get a verbose listing.

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

  lun show [ -v | -m | -c ] [ all | mapped | offline | online | unmapped | staging | -g initiator_group | -n node | -l vol_name | lun_path ] Displays the status (lun_path, size, online/offline state, shared state) of the given LUN or class of LUNs. With the -v option supplied, additional information (comment string, serial number, LUN mapping, HA Pair Shared Volume Information) is also displayed. With the -m option supplied, information about lun_path to initiator_group mappings is displayed in a table format. With the -c option supplied, information about LUN cloning status is displayed.

• Question 23:

  Using the output below, a co-worker determined that these are type "Solaris" LUNs. What would your determination be?

  

  A. These are type "Solaris" LUNs.

  B. Not enough information is given here. Run the lun map command to get the information requested.

  C. Not enough information is given here. Run the lun show -v command to get the information requested.

  D. Not enough information is given here. Run the lun status command to get the information requested.

  Correct Answer: C

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

  lun show [ -v | -m | -c ] [ all | mapped | offline | online | unmapped | staging | -g initiator_group | -n node | -l vol_name | lun_path ] Displays the status (lun_path, size, online/offline state, shared state) of the given LUN or class of LUNs. With the -v option supplied, additional information (comment string, serial number, LUN mapping, HA Pair Shared Volume Information) is also displayed. With the -m option supplied, information about lun_path to initiator_group mappings is displayed in a table format. With the -c option supplied, information about LUN cloning status is displayed.

  A specific LUN can be indicated by supplying its lun_path. When an initiator_group is specified, status is reported for all LUNs that are mapped to the initiator group. When a node is specified, status is reported for all LUNs that are mapped to initiator groups which contain that node. When staging is specified, information about the temporary LUNs preserved in the staging area is reported. When vol_name is specified, status is reported for all the LUNs in that volume. Mapped LUNs are ones with at least one map definition. A LUN is online if it has not been explicitly made offline using the lun offline command.

  

• Question 24:

  You are having problems accessing three recently-created LUNs. Given the output below, the reason is because all of the LUNs are using the same LUN ID of 0.

  lun show -m LUN pathMapped to LUNID

  /vol/vol1/lun0 solaris-igroup0 0 /vol/vol1/lun1 windows-igroup 0 /vol/vol1/qtree1/lun2 aix-igroup 0 /vol/vol1/qtree1/lun3 linux-igroup 0

  A. True

  B. False

  Correct Answer: B

  The 'lun' in the path is irrelevant. The 0 at the end of each statement denotes the LUN ID. LUN IDs must be unique per igroup.

• Question 25:

  Which command will show the FCP target(s) on a storage system?

  A. fcp show adapter

  B. fcp show all

  C. fcp show -t

  D. fcp status

  Correct Answer: A

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

  fcp show adapter [ -v ] [ adapter ]

  If no adapter name is given, information about all adapters are shown. This command displays information such as nodename/portname and link state about the adapter. If the -v flag is given, this command displays additional information

  about the adapters.

• Question 26:

  The largest volume that can be created on a 64-bit aggregate is ___.

  A. 10 TB

  B. 16 TB

  C. 64 TB

  D. Equal to size of the aggregate

  Correct Answer: D

  http://www.netapp.com/us/system/pdf-reader.aspx?m=tr-3786.pdfandcc=us

  Trick question.... Depends on the array and the maximum shelves and disks and aggregate size, which can change over time. But a volume can never be greater than the aggregate - save for a new feature in 8.2 called Infinite Volume that is not covered by this exam.

• Question 27:

  With 64-bit aggregates, the number of FlexVols that can be created on a storage controller is ____.

  A. 500

  B. 1000

  C. 6400

  D. 64000

  Correct Answer: A

  http://www.netapp.com/us/products/storage-systems/fas3200/fas3200-tech-specs.aspx

  There is no easily remembered reason why its 500. Some people like to remember that there is one other question on the exam that requires you to remember an arbitrary number and the answer is also 500 (distance of a fiber interconnect at 2Gbps).

• Question 28:

  After upgrading to DOT 8.07-mode, you can convert existing 32-bit aggregates into 64-bit aggregates.

  A. True

  B. False

  Correct Answer: B

  http://www.ntapgeek.com/2011/12/how-in-place-expansion-works.html

  To upgrade an aggregate in-place, the only available method is to add disks to expand the aggregate to >16TB.

  There is an obscure method using diag mode but that is not supported or mentioned in the exam content. The answer is always add disks to grow past 16TB, or migrate.

• Question 29:

  To create a 64-bit aggregate, which optional switch/flag/parameter/option to the aggr create command must be included?

  A. b 64

  B. B 64

  C. l 64

  D. L 64

  E. No optional switch/flag/parameter/option is needed because 64-bit aggregates are the default

  Correct Answer: B

  http://www.netapp.com/us/system/pdf-reader.aspx?m=tr-3786.pdfandcc=us

  The command to create a 64-bit aggregate is the same aggr create command that is present in Data ONTAP 7G for aggregate creation. The aggr create command has a new flag, -B, to specify the type of aggregate to create. It takes a value

  of either 32 or 64 and creates the respective type of aggregate. Therefore the aggr create command with -B 64 creates a 64-bit aggregate. The aggr create command without the -B flag by default creates a 32-bit aggregate.

  Here are some commands for creating different aggregate types in Data ONTAP 8.0:

  Creating a 64-bit aggregate:

  aggr create aggr_64 -B 64 5

  Creating a 32-bit aggregate using B flag:

  aggr create aggr_32 -B 32 5

  Creating a 32-bit aggregate without using B flag:

  aggr create default_aggr_32 5

  Note: the man pages do not include this option in later versions of DOT because 64-bit is now the default.

• Question 30:

  When migrating from Data ONTAP 7G to Data ONTAP 8.0 7-mode, existing non-traditional aggregates are designated as ________.

  A. 16-bit

  B. 32-bit

  C. 64-bit

  D. Foreign

  E. Unknown

  Correct Answer: B

  Aggregates are never converted as part of an upgrade. An upgrade will not touch your data!