vcs-257.veritas - gratis exam · 2019-11-15 · each veritas volume manager disk group has a...

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VCS-257.veritas

Number: VCS-257Passing Score: 800Time Limit: 120 min



Exam A

QUESTION 1SIMULATION

How many times will Dynamic Multi-Pathing retry a failed I/O request for a single, active path, by default?

Correct Answer: 5Section: (none)Explanation

Explanation/Reference:

QUESTION 2How does an administrator create and mount a Veritas cluster file system?


A. create the cluster file system on a shared volume using mkfs and mount the file system using–o cluster

B. create the cluster file system using mkfs with the –o cluster option and mount the file system using–o shared

C. create the cluster file system on a shared volume using mkfs and mount the file system using –o shared

D. create the cluster file system using mkfs with the –o shared option and mount the file system using –o cluster

Correct Answer: ASection: (none)Explanation

Explanation/Reference:Explanation:

QUESTION 3When a Veritas Volume Manager volume has a Veritas file system, which benefit is experienced by using SmartMove?

A. optimized data recovery process


B. optimized SmartTier storage allocation process

C. optimized mirror synchronization process

D. optimized file replication process

Correct Answer: CSection: (none)Explanation

Explanation/Reference:Explanation:Reference: https://vox.veritas.com/qsuop67736/attachments/qsuop67736/Articles-Business-Continuity/68/1/Veritas-Storage-Foundation-and-Thin-Provisioning.pdf(page 11)

QUESTION 4How can an administrator modify the block size for a Veritas file system?

A. using the mkfs command when the administrator creates the file system

B. using the fsadm command while the file system is online

C. using the mount command when the administrator mounts the file system

D. using the fsadm command while the file system is offline



QUESTION 5Why should the primary role of a cluster file system be changed?

A. to balance the load of recovery operations when a node crashes

B. to improve performance for normal file system I/O operations

C. to ensure file systems have equal access to operating system resources

D. to balance the I/O load among the nodes




QUESTION 6Which kernel module or plug-in defines array-specific procedures and commands used to select the path failover mechanism?

A. Array Policy Module (APM)

B. Array Support Library (ASL)

C. Device Discovery Layer (DDL)

D. Array Specific Module (ASM)



QUESTION 7An administrator sets up site awareness on a host and needs to verify that everything is configured correctly.

Which command should the administrator execute to simulate the failure of a site to verify the configuration?


A. vxdiskadm

B. vxfiredrill

C. vxdg detachsite

D. vxdg split



Explanation/Reference:Reference: https://sort.veritas.com/public/documents/sf/5.0/aix/manpages/vxvm/vxdg_1m.html

QUESTION 8What is the term for the collection of storage used for SmartIO?

A. flash group

B. cache area

C. cache pool

D. flash pool

Correct Answer: BSection: (none)Explanation

Explanation/Reference:Reference: https://sort.symantec.com/public/documents/vis/7.0/aix/productguides/html/sf_admin/ch04s01.htm

QUESTION 9Which option should the administrator use with the vxsnap command to resynchronize a full-sized, space-optimized or linked break-off snapshot with the originalvolume?

A. refresh

B. reattach

C. restore

D. prepare

Correct Answer: DSection: (none)Explanation

Explanation/Reference:Reference: https://sort.veritas.com/public/documents/vie/7.1/linux/productguides/html/sfcfs_admin/ch27s03s01s01.htm

QUESTION 10How many times will Dynamic Multi-Pathing retry a failed I/O request for a single active path, by default?

A. 2

B. 3


C. 4

D. 5



QUESTION 11Which command is used to mirror all volumes from one disk to another?

A. vxedit

B. vxvol

C. vxrelayout

D. vxdiskadm



QUESTION 12What are two benefits of multi-volume file systems (MVFS)? (Select two.)

A. file system metadata can be placed on a separate volume

B. physical to virtual migration is enabled

C. data failover to secondary volumes is provided

D. a single file system can be created over more than one volume

E. multiple file systems can share storage from an MVFS volume

Correct Answer: ADSection: (none)Explanation



Reference: https://sort.symantec.com/public/documents/vis/7.0/aix/productguides/html/sf_admin/ch26s01.htm

QUESTION 13What is the purpose of the default cvm service group in a Veritas InfoScale Storage cluster?


A. to start, stop, and monitor LLT and GAB on all cluster systems

B. to monitor all shared disk groups on all systems in the cluster

C. to mount, unmount, and monitor all shared cluster file systems on configured cluster nodes

D. to start, stop, and monitor the CVM and CFS components on all cluster systems



QUESTION 14When write-back caching is enabled on Cluster File System (CFS), SmartIO mirrors the write-back data at the file system level to the other node’s cache.

What is this behavior called?

A. cache mirroring

B. cache reflection

C. cache duplication

D. cache redundancy




QUESTION 15How does Veritas InfoScale Storage for UNIX/Linux prevent the LUN from becoming thick when an administrator creates a mirrored volume or adds a mirror on athin LUN?

A. by adding a data change object

B. by adding a dirty region log on each physical disk

C. by adding markers on each plex

D. by adding snapshot volumes


Explanation/Reference:Reference: https://sort.veritas.com/public/documents/vif/7.0/aix/manualpages/html/man/volume_manager/html/man1m/vxassist.1m.html

QUESTION 16Which InfoScale Storage object can be cached when SmartIO is enabled on a server?

A. disk groups

B. subdisks

C. plexes

D. volumes


Explanation/Reference:Reference: https://origin-download.veritas.com/resources/content/live/SFDC/116000/000116493/en_US/infoscale_smartio_solutions_72_lin.pdf

QUESTION 17An administrator has configured replication using Veritas Volume Replicator between two sites. The replication mode is set to asynchronous and the replicationstatus is consistent and connected.

The performance of which component impacts the application write performance?

A. write performance of the primary SRL volume


B. write performance of the secondary SRL volume

C. write performance of the data volumes at the primary site

D. network latency between the primary and the secondary sites



QUESTION 18Which feature allows SmartIO enable VMware guest to use vMotion?

A. SmartCache

B. SmartMotion

C. SmartPool

D. SmartMove


Explanation/Reference:Reference: https://sort.symantec.com/public/documents/vie/7.0/vmwareesx/productguides/html/sfhas_virtualization/ch08s01.htm

QUESTION 19Which command is used to grow a Veritas file system?

A. fsmigadm

B. fsadm

C. fsppadm

D. vxresize




Reference: https://rageek.wordpress.com/2012/04/18/growing-veritas-filesystem-via-the-command-line/

QUESTION 20How many Veritas file system cache areas are supported by SmartIO?

A. one cache area of each cache type on each system

B. one for read caching and one for write caching on each system

C. one for read caching and one for write caching for each file system

D. one for read caching and one for write-back caching for each file system


Explanation/Reference:Reference: https://sort.veritas.com/public/documents/via/7.1/aix/productguides/html/infoscale_whats_new/ch01s12s02.htm

QUESTION 21An administrator needs to install Veritas InfoScale Storage for UNIX/Linux on a system.

Which two requirements are validated by the Veritas Services and Operations Readiness Tools (SORT) Installation and Upgrade custom report?

A. Any attached disk arrays are supported.

B. The LUN UDID values are unique.

C. Sufficient file system free space is available.

D. The SAN fabric transfer speed is sufficient.

E. SCSI-3 persistent group reservation is supported.

Correct Answer: CDSection: (none)Explanation


QUESTION 22How should an administrator configure SmartIO to ensure that data files on a specific Veritas file system remain in SmartIO cache?



A. assign cache priority to the file system files with the sfcache set command

B. flush the cache and prioritize the file system files with the sfcache app cachearea command

C. load the file system files into cache with the sfcache pin command

D. load the file system files into cache using the sfcache load command


Explanation/Reference:Reference: https://vox.veritas.com/qsuop67736/attachments/qsuop67736/storage-and-availability-management/280/1/SmartIO%20Blueprint%20for%20Linux.pdf(page 8)

QUESTION 23What is the default caching mode of a VxFS cache area for a specified mount point?

A. nocaching

B. write

C. read

D. write-back


Explanation/Reference:Reference: https://sort.veritas.com/public/documents/vie/7.0/linux/productguides/html/infoscale_smartio_solutions/ch03s09.htm

QUESTION 24Each Veritas Volume Manager disk group has a configuration database that contains persistent configuration data (or metadata) about the objects in the disk group.

Where is VxVM internal configuration information stored?


A. in the table of contents of the VxVM managed disk

B. in the private region of the VxVM managed disk

C. in the public region of the VxVM managed disk

D. in the file allocation table of the VxVM managed disk


Explanation/Reference:Reference: https://sort.symantec.com/public/documents/sf/5.0/aix/html/vxvm_admin/ag_ch_diskgroups_vm15.html

QUESTION 25Which two commands are used for thin reclamation? (Select two.)

A. fsadm

B. vxdctl

C. vxdisk

D. vxtune

E. vxdmpadm

Correct Answer: ACSection: (none)Explanation

Explanation/Reference:Reference: https://sort.symantec.com/public/documents/vis/7.0/aix/productguides/html/sf_admin/ch23s01s02.htm

QUESTION 26SIMULATION

An administrator uses the command shown below to create a RAID-5 log in the mydg disk group.

What is the default number of stripe columns for the volraid volume?

Correct Answer: 2


Section: (none)Explanation

Explanation/Reference:Reference: https://sort.symantec.com/public/documents/sf/5.0/aix/html/vxvm_admin/ag_ch_volumecreation_vm25.html

QUESTION 27An administrator uses the command shown below to create a RAID-5 volume volraid together with two RAID-5 logs in the disk group mydg:

What is the default number of stripe columns for the volraid volume?

A. 2

B. 3

C. 4

D. 5


Explanation/Reference:Reference: https://sort.symantec.com/public/documents/sf/5.0/aix/html/vxvm_admin/ag_ch_volumecreation_vm25.html

QUESTION 28Which feature of Veritas InfoScale Storage for UNIX/Linux utilizes internal/external flash and solid state drives for data caching?

A. SmartTier

B. SmartIO

C. Dynamic Storage Tiering (DST)

D. Flexible Storage Sharing (FSS)


Explanation/Reference:Reference: https://origin-download.veritas.com/resources/content/live/DOCUMENTATION/SFDC/000126799/en_US/infoscale_smartio_solutions_73_aix.pdf


QUESTION 29Which Veritas Volume Manager daemon uses the Storage Networking Industry Association (SNIA) HBA API library to receive SAN fabric events from the HBA?

A. vxesd

B. vxiod

C. vxconfigd

D. vxrelocd


Explanation/Reference:Reference: https://www.veritas.com/support/en_US/article.TECH72540

QUESTION 30Which command consolidates and displays records of Veritas Volume Manager and Veritas File System?

A. vxprint

B. vxstat

C. vxsfadm

D. vxlist


Explanation/Reference:Reference: https://sort.veritas.com/public/documents/sfha/6.0/linux/productguides/pdf/sf_admin_60_lin.pdf

QUESTION 31An administrator plans to move disks EMC_11 and EMC_12 from diskgroup appdg to diskgroup webdg. There are several volumes residing on both disks, so theadministrator needs a list of volumes that will be affected for planning purposes.

Which command should the administrator use to generate the list?



A. vxassist –g appdg list

B. vxdisk –g appdg checkdisk EMC_11 EMC_12

C. vxvol –g appdg list

D. vxdg listmove appdg webdg EMC_11 EMC12



QUESTION 32Which command should an administrator use to perform an online migration of a native file system to a Veritas file system?

A. fscdsadm

B. vxcdsconvert

C. fsmigadm

D. vxvmconvert


Explanation/Reference:Reference: https://www.veritas.com/support/en_US/article.000068573

QUESTION 33Refer to the exhibit.


What is the layout of the volume described in the vxprint output provided in the exhibit?

A. mirrored volume with each mirror made up of concatenated subdisks (mirror-concat)

B. mirrored volume with each mirror made up of striped subdisks (mirror-stripe)

C. layered volume striped across mirrored subvolumes (stripe-mirror)

D. layered volume formed by concatenation of mirrored subvolumes (concat-mirror)



QUESTION 34What happens when the administrator changes the password on a managed host after it is added to a Veritas InfoScale Operations Manager domain?

A. the managed host needs to be removed and added back to the Veritas InfoScale Operations Manager domain

B. the operation of Veritas InfoScale Operations Manager remains unaffected, the password is only needed when the host is added initially

C. the new credentials need to be reflected to the Veritas InfoScale Operations Manager using the “Security” tab the “Settings” perspective

D. the managed host needs to be removed and added back to the Veritas InfoScale Operations Manager domain and a “refresh” operation must be issued


Explanation/Reference:Reference: https://origin-download.veritas.com/resources/content/live/DOCUMENTATION/8000/DOC8811/en_US/vom_faqs_7_0.pdf (p.25)


QUESTION 35Which feature of Dynamic Multi-Pathing for VMware enables the pooling of locally attached solid state disks at the VMware ESXi host layer?

A. SmartPool

B. DMPPool

C. VdiskPool

D. IOPool


Explanation/Reference::https://sort.veritas.com/public/documents/vif/7.0/vmwareesx/productguides/html/dmp_admin_70_esx/ch01s01s01.htm

QUESTION 36What does migrating from thick to thin LUNs involve?

A. array-level mirroring

B. attaching a plex

C. creating volume snapshots

D. encapsulation


Explanation/Reference:Reference: https://www.veritas.com/support/en_US/article.000064829

QUESTION 37Which two database file types can be compressed with the least impact on overall performance? (Select two.)

A. SYSTEM tablespace

B. Archive logs

C. Read-only tablespaces

D. Database control files


E. Temporary tablespaces

Correct Answer: ABSection: (none)Explanation


QUESTION 38Refer to the exhibit.

What is the layout of the volume?

A. striped

B. first striped then mirrored (mirror-stripe)

C. striped with parity

D. first mirrored and then striped (stripe-mirror)



QUESTION 39What are two advantages of a properly configured striped volume layout? (Select two.)

A. reduced SAN traffic


B. load balancing

C. improved performance

D. data parity

E. improved reliability

Correct Answer: BCSection: (none)Explanation


QUESTION 40DRAG DROP

A fibre connection failure causes a system to lose connection to the disk array resulting in the disk group and all mounted file systems being disabled due to I/Oerrors.

Drag five steps on the left to the right column to show the correct sequence of actions the administrator should perform to recover the disabled disk group and fivesystems after the physical connection is restored.

Select and Place:


Correct Answer:


Section: (none)Explanation


QUESTION 41A fiber connection failure causes a system to lose connection to the disk array resulting in the disk group and all mounted file systems being disabled due to I/O


errors.

What is the correct sequence of actions the administrator should perform to recover the disabled disk group and file systems after the physical connection isrestored?


A. vxdg flush the disk group >vxrecover the disabled volumes >unmount the file systems >fsck to perform file system checks >mount the file systems

B. unmount the file systems >vxdg deport the disk group >vxdg import the disk group >fsck to perform file system checks >mount the file systems

C. unmount the file systems >vxdg flush the disk group >vxrecover disabled volumes >fsck to perform file system checks >mount the file systems

D. vxdg recover the disk group >vxrecover disabled volumes >unmount the file systems >fsck to perform file system checks >mount the file systems



QUESTION 42User creates a 10MB file, which is then compressed using vxcompress to reduce the file size to 1MB. Another user copies this file to a different file system on thesame host using cp.

What is the total amount of space that is now occupied by the two files?

A. 1MB

B. 10MB

C. 11MB

D. 20MB




Explanation:

QUESTION 43Which SmartIO caching mode primarily supports the applications that run directly over raw volumes?

A. block-level read caching

B. write-back caching

C. read-write caching

D. block-level write caching


Explanation/Reference:Explanation:Referencehttps://sort.veritas.com/public/documents/sfha/6.2/aix/productguides/html/sfhas_smartio_solutions/ch02s01.htm

QUESTION 44What is the advantage of making storage checkpoints automatically accessible through a directory named .checkpoint in the root of the file system?

A. it ensures a storage checkpoint is automatically deleted under certain conditions

B. it eliminates the need for manually mounting storage checkpoints

C. it ensures the inode number of a file is different across storage checkpoints

D. it automatically creates a new storage checkpoint as changes are made to the file system


Explanation/Reference:Explanation:Referencehttps://sort.symantec.com/public/documents/vis/7.0/aix/productguides/html/sf_admin/ch16s05s02s02.htm

QUESTION 45Which Command Line utility sets and changes attributes for Veritas Volume Manager configuration records?

A. vxassist

B. vxmake


C. vxedit

D. vxmend


Explanation/Reference:Explanation:Reference: https://sort.veritas.com/public/documents/sf/5.0/aix/manpages/vxvm/vxedit_1m.html

QUESTION 46Which process must be running for a Veritas InfoScale Operations Manager (VIOM) managed host to be added to one or more VIOM Management Servers?

A. xprtldctrl

B. vxconfigd

C. xprtld

D. sfsmsecd


Explanation/Reference:Explanation:Reference: https://download.veritas.com/resources/content/live/DOCUMENTATION/SFDC/000109245/en_US/viom_install_71.pdf?__gda__=1501079679_562353a7f3f38bc153fbe37e9cf737ae

QUESTION 47Which command should an administrator use to determine the SmartIO cache hit ratio for the /data file system?

A. smartioadm stat /data

B. sfcache stat /data

C. vxstat smartio /data

D. vxioadm stat /data



Explanation/Reference:Explanation:Referencehttps://sort.veritas.com/public/documents/sfha/6.2/aix/productguides/html/sfhas_smartio_solutions/ch03s12.htm

QUESTION 48Which command should an administrator use to determine whether a SmartTier file placement policy is assigned to a file system?

A. fsvmap

B. fsvoladm

C. fsadm

D. fsppadm




vcs-257.veritas - gratis exam · 2019-11-15 · each veritas volume manager disk group has a...

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