NS0-155 Online Practice Questions and Answers

Correct Answer: D

https://library.netapp.com/ecmdocs/ECMP1196890/html/man1/na_exportfs.1.html exportfs [ -v ] [ -io options ] path -i Ignores the options specified for a file system path in the /etc/exports file. If you do not specify the I option with the -o option, Data ONTAP uses the options specified for the file system path in the /etc/ exports file instead of the options you specify on the command line.

Correct Answer: D

http://en.wikipedia.org/wiki/Multipath_I/O

Fiber Channel (FC), FCoE and iSCSI encapsulate SCSI-3. FCoE and iSCSI further encapsulate the transport within IP; hence the term IP SAN.

In computer storage, multipath I/O is a fault-tolerance and performance enhancement technique whereby there is more than one physical path between the CPU in a computer system and its mass storage devices through the buses,

controllers, switches, and bridge devices connecting them.

A simple example would be a SCSI disk connected to two SCSI controllers on the same computer or a disk connected to two Fibre Channel ports. Should one controller, port or switch fail, the operating system can route I/O through the

remaining controller transparently to the application, with no changes visible to the applications, other than perhaps incremental latency.

Correct Answer: C

https://library.netapp.com/ecm/ecm_download_file/ECMP1200040

Remote Support Agent is the facility to provide NetApp Support Engineers with the ability to remotely trigger AutoSupport.

Remote Support Agent uses HTTP or HTTPS to communicate with the storage controller to initiate commands and to collect files. It uses HTTPS to send system logs and core files from the Data ONTAP root volume to Remote Support Enterprise on the NetApp Support side. NetApp RSA is not related to the RSA public key encryption algorithm.

Correct Answer: A

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.

Correct Answer: C

https://library.netapp.com/ecmdocs/ECMP1196991/html/GUID-D4D7C7F0-9063-4099-B5CA- 8FEE619EEF1D.html

SyncMirror is a feature of Data OnTap used to mirror data to two separate aggregates. It allows for real- time mirroring of data to matching aggregates physically connected to the same storage system. SyncMirror provides for synchronous

mirroring of data, implemented at the RAID level. You can use SyncMirror to create aggregates that consist of two copies of the same WAFL file system. The two copies, known as plexes, are simultaneously updated. Therefore, the copies

are always identical. The two plexes are directly connected to the same system.

The following provides information about the activities of SyncMirror:

SyncMirror can be used to mirror aggregates and traditional volumes. (A traditional volume is essentially an aggregate with a single volume that spans the entire aggregate.) SyncMirror cannot be used to mirror FlexVol volumes. However,

FlexVol volumes can be mirrored as part of an aggregate.

SyncMirror is different from synchronous SnapMirror.

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.

Correct Answer: BCD

Correct Answer: ACD

Open Systems Snap Vault runs on servers, so the objects that can be selected for backup will be host- based. Qtrees are objects on the storage system.

Correct Answer: BE

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.