Assement Test for Linux Cluster

8/9/2019 Assement Test for Linux Cluster

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Linux L3 Assessment

1- Cluster is used for.

a. simulation b. Making moviesc. Scientific computing d. All of the above

2-Which one is the block protocol

a. nfs b. cifsc. scsi d. !one of the above

3-

!ame of the technolog" used to expose storage on net#ork.

a. !AS b. SA! c. both a $ b d. !one

4-Which protocol provides block level access of storage

a. cifsb. %C&c. '()d. both b $ c

5-. %encing is used for

a. Maintain data integrit" b. reboot cluster nodec. &o#er of cluster node d. All of the above

6* Which one is shared fencing device

a. A&C Master S#itch b. +& 'L,c. (ell dracd.!one

7-Which one is the individual fencing device

a. (ell drac b. A&C Master S#itchesc. both a $ b d. !one

8-Which protocol is used for heartbeat functionalit"

a. -C&'& b. udpc. totem d. tcp

9-Which option is used to mount a iscsitarget in etcfstab.

a. defaults


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b. /netdevc. ro0defaultsd. All of the above

10-Which file s"stem is used for failsafe cluster

a. ext1 b. gfs2c. ocfs d. both b $ c

11-(uring the failover period #hich uer" #orks in failover cluster

a. read" uer" b. #rite uer"c. both read $ #rite uer" d. !one

12-(uring the failover period #hich uer" #orks in failsafe cluster

a. both read $ #rite uer" b. ,nl" #rite uer"

c. ,nl" read uer" d. !one

13-4%S #orks #ith onl"

a. 5aidb. lvmc. both a $ b c. !one

61* Which command is used to list the the san devices

a. scsils b. lsscsib. listscsi c. node

15-udev is used for

a. mange cluster resources b. manage cman servicec. used for device naming d. !one

16-Which command is used to read udev rule

a. udevinfo b. scsi/idc. both a $ b c. udevtrigger

67* What is the location of all block devices

a. proc b. devb. opt c. node

68* +o# to list the open files


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a. ls l b.lsofb. both a $ b d. !one

19-%ailover domain is used for

a. -o run all service on a single nodeb. -o stop a service

c. -o stick a service on a particular node d. !one

20-xfs files s"stem is developed b"

a. 5ed+atb. Silicon 4raphicsc. !ovel c. '9M

26* Which command can be used to remove a mirror from a volume :Choose t#o.;

A. vxedit 9. vxassist C. vxremove

(. vxevac ). vxmirror

22* Which command displa"s the number of paths to the datadg


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2* Which methods enable "ou to resiBe both a volume and its mounted @eritas file s"stem at the same time :Choose t#o.;

A. vxresiBe

9. vxdisk resiBe

C. fsadm

(. @)A

). vxassist

27* Which Command "ou can initialiBed a disk.

A; vxdg *i disk/6 9; vxedit k disk/6 c; vxdisksetup i disk/6 d; vxdg f disk/6

28* Which command creates a 5A'(*? volume #ith an attached log

A. vxassist *g datadg make datavol la"out>raid? ncol>3

9. vxassist *g datadg make datavol la"out>raid?0addlogncol>3

C. vxassist *g datadg make datavol la"out>raid?0raid?logncol>3

(. vxassist *g datadg make datavol la"out>raid?0rlogncol>3

2* A @eritas @olume Manager :@x@M; disk named (isk/1 has been removed from the datadg disk group. Which

command is used to remove this disk from @eritas @olume Manager :@x@M; control

A. vxdisk *g datadgrmdisk (isk/1

9. vxdiskunsetup (isk/1

C. vxdg *g datadgrmdisk (isk/1

(.vxdisksetup *r (isk/1

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have access to volumes and file s"stem data. What is the likel" cause of this problem

A. vxconfigd has stopped running.

9. vxdctl has stopped running.

C. A disk has failed.

(. -he disk.info file is corrupt

32* Most do#ntime is caused b".

A. +ard#are failures. C. !et#orking problems.

9. Soft#are errors. (. Scheduled maintenance

33* What is the minimum number of s"stems reuired to implement an activepassive failover configuration

in a local cluster

A. ,ne

9. -#o

C. -hree

(. %our

31* A global cluster is=

A. A single cluster stretched across a #ide*area net#ork.

9. Multiple cooperating clusters geographicall" separated.

C. A combination of campus clusters and local clusters.

(. -#o local0 but separate0 clusters that share data.

3?* -he goal of hard#are redundanc" is to=

A. 5emove single points of failure.

9. &revent failures.

C. 4uarantee 6


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A. &rimar" and secondar" (!S name servers.

9. Multiple net#ork interfaces and '& addresses.

C. A database for managing shared storage.

(. Appropriate licensing for all failover target s"stems.

37* A persistent resource=

A. Can be taken offline0 but not brought online.

9. Cannot be a parent to another resource.

C. Al#a"s depends on another resource.

(. 's used for monitoring hard#are devices.

38* What role does the hashado# daemon perform in a @CS cluster -he hashado# daemon=

A. 5eplicates the main.cf file

9. Communicated #ith 4A9 and LL-

C. 5estarts +A( if +A( fails

(. 5eplicates the in*memor" configuration

3* A recommended practice for offline configuration is to=

A. Cop" the main.cf and t"pes.cf into a staging director" before editing.

9. Change the original main.cf #hile the cluster is up0 then bring the cluster do#n.

C. Make changes to the service groups before changing cluster attributes.

(. Change resources0 then service groups0 then cluster attributes.

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A. -he agent stops monitoring that resource.

9. -he agent takes the resource offline on the local s"stem.

C. -he resource attributes are checked for s"ntax errors.

(. -he resource is considered faulted.

12* When "ou create a service group=

A. 't is automaticall" set to run on all cluster s"stems.

9. 't is automaticall" set to start and run on all cluster s"stems.

C. Eou must explicitl" specif" #hich s"stems can run the service group.

(. Eou must add all resources before the service group can be brought online.

13* When "ou create a resource=

A. All child resources must first be online.

9. All child resources must first be offline.

C. All parent resources must be disabled.

(. All reuired attributes must be set before "ou can bring the resource online.

11* Which cluster configuration information is optional during @CS installation

A. Web 4F'0 SM-&0 S!M&

9. License ke"s0 @CS users0 S!M&

C. License ke"s0 !otifier0 S!M&

(. Cluster '(0 @CS users0 Web 4F'

1?* ', %encing uses //////////////// to fence off the data disks from nodes no longer in the cluster.

A. SCS' '' reservations

9. SCS'*3 persistent reservations

C. %ibre channel locking

(. SA! controller locking

1* ', fencing can be configured for @CS if "ou are using @olume Manager ?.x and=


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A. Eou have installed the %encing agent for @CS.

9. Eour shared storage is in a SA!.

C. Eour shared storage devices support SCS'*3 &ersistent 5eservations.

(. Eour shared storage is a net#ork appliance.

17* +o# #ill "ou start llt.

A. lltconfig k

9. llconfig m

C. lltconfig g

(. lltconfig c

18* +o# #ill "ou stop llt.

A. lltconfig k

9. llconfig F

C. lltconfig g

(. lltconfig c

1* +o# #ill "ou stop +ad.

A. haconf

9. hashado#

C. hastart c

(. hastart

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Assement Test for Linux Cluster