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質問 66
CORRECT TEXT
Make a swap partition having 100MB. Make Automatically Usable at System Boot Time.
正解:
解説:
Usefdisk/dev/hda->Tocreatenewpartition.
Typen->ForNewpartition
ItwillaskforLogicalorPrimaryPartitions.Presslforlogical.
ItwillaskfortheStartingCylinder:UsetheDefaultbypressingEnterKey.
TypetheSize:+100M->YoucanSpecifyeitherLastcylinderofSizehere.
PressPtoverifythepartitionslistsandrememberthepartitionsname.DefaultSystemIDis83thatmeansLinuxNative.
TypettochangetheSystemIDofpartition.
TypePartitionNumber
Type82thatmeansLinuxSwap.
Presswtowriteonpartitionstable.
EitherRebootorusepartprobecommand.
mkswap/dev/hda?->TocreateSwapFilesystemonpartition.
swapon/dev/hda?->ToenabletheSwapspacefrompartition.
free-m->VerifyEitherSwapisenabledornot.
vi/etc/fstab/dev/hda?swapswapdefaults00
ReboottheSystemandverifythatswapisautomaticallyenabledornot.
質問 67
CORRECT TEXT
Create a volume group, and set 8M as a extends. Divided a volume group containing 50 extends on volume group lv (lvshare), make it as ext4 file system, and mounted automatically under /mnt/data. And the size of the floating range should set between 380M and 400M.
正解:
解説:
#fdisk
#partprobe
#pvcreate/dev/vda6
#vgcreate-s8Mvg1/dev/vda6-s
#lvcreate-nlvshare-l50vg1-l
#mkfs.ext4/dev/vg1/lvshare
#mkdir-p/mnt/data
#vim/etc/fstab/dev/vg1/lvshare/mnt/dataext4defaults00
#mount-a
#df-h
質問 68
CORRECT TEXT
There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network's Host.
正解:
解説:
vi/etc/sysconfing/networkNETWORKING=yesHOSTNAME=station?.example.comGATEWAY=192.168.0.254servicenetworkrestart2.vi/etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0ONBOOT=yesBOOTPROTO=staticIPADDR=X.X.X.XNETMASK=X.X.X.XGATEWAY=192.168.0.254ifdowneth0ifupeth0
質問 69
CORRECT TEXT
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
正解:
解説:
#useradd-Gadminuser2
#useradd-Gadminuser3
#passwduser2redhat
#passwduser3redhat
質問 70
CORRECT TEXT
Configure /var/tmp/fstab Permission.
Copy the file /etc/fstab to /var/tmp/fstab. Configure var/tmp/fstab permissions as the following:
Owner of the file /var/tmp/fstab is Root, belongs to group root
File /var/tmp/fstab cannot be executed by any user
User natasha can read and write /var/tmp/fstab
User harry cannot read and write /var/tmp/fstab
All other users (present and future) can read var/tmp/fstab.
正解:
解説:
cp/etc/fstab/var/tmp/
/var/tmp/fstabviewtheownersetfacl-mu:natasha:rw-/var/tmp/fstabsetfacl-mu:haryy:---/var/tmp/fstabUsegetfacl/var/tmp/fstabtoviewpermissions
質問 71
CORRECT TEXT
Create a logical volume
Create a new logical volume as required:
Name the logical volume as database, belongs to datastore of the volume group, size is 50 PE.
Expansion size of each volume in volume group datastore is 16MB.
Use ext3 to format this new logical volume, this logical volume should automatically mount to /mnt/database
正解:
解説:
fdisk-cu/dev/vda//Createa1Gpartitionmodifiedwhenneededpartx-a/dev/vdapvcreate/dev/vdaxvgcreatedatastore/dev/vdax-s16Mlvcreate-l50-ndatabasedatastoremkfs.ext3/dev/datastore/databasemkdir/mnt/databasemount/dev/datastore/database/mnt/database/df-Thvi/etc/fstab/dev/datastore/database/mnt/database/ext3defaults00mount-aRestartandcheckallthequestionsrequirements.
質問 72
CORRECT TEXT
Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254. Make successfully resolve to server1.example.com.
正解:
解説:
nameserverisspecifiedinquestion1.Vi/etc/resolv.confnameserver192.168.0.2542.hostserver1.example.com
質問 73
CORRECT TEXT
Make on data that only the user owner and group owner member can fully access.
正解:
解説:
chmod770/data
Verifyusing:ls-ld/dataPreviewshouldbelike:drwxrwx---2rootsysadmin4096Mar1618:08/dataTochangethepermissionondirectoryweusethechmodcommand.Accordingtothequestionthatonlytheowneruser(root)andgroupmember(sysadmin)canfullyaccessthedirectoryso:chmod770/data
質問 74
CORRECT TEXT
Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.
正解:
解説:
1.chmodg+s/data2.Verifyusing:ls-ld/dataPermissionshouldbelikethis:drwxrws---2rootsysadmin4096Mar1618:08/dataIfSGIDbitissetondirectorythenwhoeveryuserscreatesthefilesondirectorygroupownerautomaticallytheownerofparentdirectory.TosettheSGIDbit:chmodg+sdirectoryToRemovetheSGIDbit:chmodg-sdirectory
質問 75
CORRECT TEXT
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.
正解:
解説:
TheLVMsystemorganizesharddisksintoLogicalVolume(LV)groups.Essentiallyphysicalharddiskpartitions(orpossiblyRAIDarrays)aresetupinabunchofequalsizedchunksknownasPhysicalExtents(PE).AsthereareseveralotherconceptsassociatedwiththeLVMsystemlet'sstartwithsomebasicdefinitions:PhysicalVolume(PV)isthestandardpartitionthatyouaddtotheLVMmix.Normallyaphysicalvolumeisastandardprimaryorlogicalpartition.ItcanalsobeaRAIDarray.PhysicalExtent(PE)isachunkofdiskspace.EveryPVisdividedintoanumberofequalsizedPEs.EveryPEinaLVgroupisthesamesize.DifferentLVgroupscanhavedifferentsizedPEs.LogicalExtent(LE)isalsoachunkofdiskspace.EveryLEismappedtoaspecificPE.LogicalVolume(LV)iscomposedofagroupofLEs.Youcanmountafilesystemsuchas/homeand/varonanLV.VolumeGroup(VG)iscomposedofagroupofLVs.ItistheorganizationalgroupforLVM.Mostofthecommandsthatyou'lluseapplytoaspecificVG.
VerifythesizeofLogicalVolume:lvdisplay/dev/vg0/lv1
VerifytheSizeonmounteddirectory:df-hordf-hmounteddirectoryname
Use:lvextend-L+400M/dev/vg0/lv1
ext2online-d/dev/vg0/lv1tobringextendedsizeonline.
AgainVerifyusinglvdisplayanddf-hcommand.
質問 76
CORRECT TEXT
Configure your system so that it is an NTP client of server.domain11.example.com
正解:
解説:
#system-config-dateNote:dialogboxwillopeninthatCheckmarkSynchronizedateandtimeovernetwork.RemovealltheNTPSERVERandclickADDandtypeserver.domain11.example.com****************AndthenpressENTERandthepressOK***************
質問 77
CORRECT TEXT
Configure the system synchronous as 172.24.40.10.
正解:
解説:
GraphicalInterfaces:System-->Administration-->Date&TimeOR
#system-config-date
質問 78
CORRECT TEXT
Create a user named alex, and the user id should be 1234, and the password should be alex111.
正解:
解説:
#useradd-u1234alex
#passwdalexalex111alex111ORechoalex111|passwd-stdinalex
質問 79
CORRECT TEXT
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.
正解:
解説:
Downloadthefileto/tmpfirstgrep[abcde]/tmp/testfile>/mnt/answer
質問 80
CORRECT TEXT
Configure autofs.
Configure the autofs automatically mount to the home directory of LDAP, as required:
server.domain11.example.com use NFS to share the home to your system. This file system contains a pre
configured home directory of user ldapuserX.
Home directory of ldapuserX is:
server.domain11.example.com /home/guests/ldapuser
Home directory of ldapuserX should automatically mount to the ldapuserX of the local /home/guests Home directory's write permissions must be available for users ldapuser1's password is password
正解:
解説:
yuminstall-yautofsmkdir/home/rehome
/etc/auto.master/home/rehome/etc/auto.ldapKeepthenexitcp/etc/auto.misc/etc/auto.ldap
/etc/auto.ldapldapuserX-fstype=nfsrwserver.domain11.example.com:/home/guests/Keepthenexitsystemctlstartautofssystemctlenableautofssu-ldapuserX//testIftheabovesolutionscannotcreatefilesorthecommandpromptis-bash-4.2$itmaybeexistmulti-leveldirectorythisneedstochangetheserver.domain11.example.com:/home/guests/toserver.domain11.example.com:/home/guests/ldapuserX.Whatismulti-leveldirectory?ItmeansthereisadirectoryofldapuserXunderthe/home/guests/ldapuserXinthequestions.Thisdirectoryistherealdirectory.
質問 81
CORRECT TEXT
Install the appropriate kernel update from http://server.domain11.example.com/pub/updates.
The following criteria must also be met:
The updated kernel is the default kernel when the system is rebooted
The original kernel remains available and bootable on the system
正解:
解説:
ftpserver.domain11.example.comAnonymousloginftp>cd/pub/updatesftp>lsftp>mgetkernel*ftp>bye
rpm-ivhkernel*
vim/etc/grub.confChecktheupdattedkernelisthefirstkernelandtheorginalkernelremainsavailable.setdefault=0wq!
質問 82
CORRECT TEXT
According the following requirements to create a local directory /common/admin.
This directory has admin group.
This directory has read, write and execute permissions for all admin group members.
Other groups and users don't have any permissions.
All the documents or directories created in the/common/admin are automatically inherit the admin group.
正解:
解説:
mkdir-p/common/adminchgrpadmin/common/adminchmod2770/common/admin
質問 83
CORRECT TEXT
Notes:
NFS : NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM : http://instructor.example.com/pub/rhel6/dvd
ldap : http : //instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.
正解:
解説:
yum install dialog
質問 84
CORRECT TEXT
According the following requirements, configure autofs service and automatically mount to user's home directory in the ldap domain.
- Instructor.example.com (192.168.0.254) has shared /home/guests/ldapuserX home directory to your system by over NFS export, X is your hostname number.
- LdapuserX's home directory is exist in the instructor.example.com: /home/ guests/ldapuserX
- LdapuserX's home directory must be able to automatically mount to /home/ guests/ldapuserX in your system.
- Home directory have write permissions for the corresponding user.
However, you can log on to the ldapuser1 - ldapuser99 users after verification. But you can only get your corresponding ldapuser users. If your system's hostname is server1.example.com, you can only get ldapuser1's home directory.
正解:
解説:
mkdir-p/home/guestscat/etc/auto.master:/home/guests/etc/auto.ldapcat/etc/auto.ldap:ldapuser1-rwinstructor.example.com:/home/guests/ldapuser1
automaticallymountalltheuser'shomedirectory
#*-rwinstructor.example.com:/home/guests/&
質問 85
CORRECT TEXT
Find all lines in the file /usr/share/dict/words that contain the string seismic. Put a copy of all these lines in their original order in the file /root/wordlist. /root/wordlist should contain no empty lines and all lines must be exact copies of the original lines in /usr/share/dict/words.
正解:
解説:
grepseismic/usr/share/dict/words>/root/wordlist
質問 86
CORRECT TEXT
Your System is going to use as a Router for two networks. One Network is 192.168.0.0/24 and Another Network is 192.168.1.0/24. Both network's IP address has assigned.
How will you forward the packets from one network to another network?
正解:
解説:
echo"1">/proc/sys/net/ipv4/ip_forward
vi/etc/sysctl.confnet.ipv4.ip_forward=1IfyouwanttousetheLinuxSystemasaRoutertomakecommunicationbetweendifferentnetworksyouneedenabletheIPforwarding.Toenableonrunningsessionjustsetvalue1to/proc/sys/net/ipv4/ip_forward.AswellasautomaticallyturnontheIPforwardingfeaturesonnextbootseton/etc/sysctl.conffile.
質問 87
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