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質問 59
CORRECT TEXT
Add 3 users: harry, natasha, tom.
The requirements: The Additional group of the two users:
harry, Natasha is the admin group.
The user: tom's login shell should be non-interactive.
正解:
解説:
#useradd-Gadminharry
#useradd-Gadminnatasha
#useradd-s/sbin/nologintom
#idharry;idNatasha(Showadditionalgroup)
#cat/etc/passwd(Showtheloginshell)OR
#system-config-users
質問 60
CORRECT TEXT
Configure autofs to automount the home directories of LDAP users as follows:
host.domain11.example.com NFS-exports /home to your system.
This filesystem contains a pre-configured home directory for the user ldapuser11 ldapuser11's home directory is host.domain11.example.com /rhome/ldapuser11 ldapuser11's home directory should be automounted locally beneath /rhome as /rhome/ldapuser11
Home directories must be writable by their users
ldapuser11's password is 'password'.
正解:
解説:
vim/etc/auto.master/rhome/etc/auto.miscwq!
#vim/etc/auto.miscldapuser11--rwsynchost.domain11.example.com:/rhome/ldpauser11:wq!
#serviceautofsrestart
serviceautofsreload
chkconfigautofson
su-ldapuser11Loginldapuserwithhomedirectory
#exit
質問 61
CORRECT TEXT
One Logical Volume named /dev/test0/testvolume1 is created. The initial Size of that disk is 100MB now you required more 200MB. Increase the size of Logical Volume, size should be increase on online.
正解:
解説:
lvextend-L+200M/dev/test0/testvolume1Uselvdisplay/dev/test0/testvolume1)
ext2online-d/dev/test0/testvolume1lvextendcommandisusedtheincreasethesizeofLogicalVolume.Othercommandlvresizecommandalsoheretoresize.Andtobringincreasedsizeononlineweusetheext2onlinecommand.
質問 62
CORRECT TEXT
Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.
正解:
解説:
cd/var/www/htmlwgethttp://instructor.example.com/pub/serverX.htmlmvserverX.htmlindex.html/etc/init.d/httpdrestartchkconfighttpdon
質問 63
CORRECT TEXT
Configure a task: plan to run echo "file" command at 14:23 every day.
正解:
解説:
(a)Createdasadministrator
#crontab-unatasha-e2314***/bin/echo"file"(b)Createdasnatasha
#su-natasha$crontab-e2314***/bin/echo"file"
質問 64
CORRECT TEXT
Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.
正解:
解説:
#cat/etc/testfile|whilereadline;doecho$line|grepabcde|tee-a/tmp/testfiledoneORgrep`abcde'/etc/testfile>/tmp/testfile
質問 65
CORRECT TEXT
Install a FTP server, and request to anonymous download from /var/ftp/pub catalog. (it needs you to configure yum direct to the already existing file server.)
正解:
解説:
#cd/etc/yum.repos.d
#vimlocal.repo[local]name=local.repobaseurl=file:///mntenabled=1gpgcheck=0
#yummakecache
#yuminstall-yvsftpd
#servicevsftpdrestart
#chkconfigvsftpdon
#chkconfig--listvsftpd
#vim/etc/vsftpd/vsftpd.confanonymous_enable=YES
質問 66
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 67
CORRECT TEXT
The firewall must be open.
正解:
解説:
/etc/init.d/iptablesstartiptables-Fiptables-Xiptables-Z/etc/init.d/iptablessavechkconfigiptableson
質問 68
CORRECT TEXT
We are working on /data initially the size is 2GB. The /dev/test0/lvtestvolume is mount on /data. Now you required more space on /data but you already added all disks belong to physical volume. You saw that you have unallocated space around 5 GB on your harddisk. Increase the size of lvtestvolume by 5GB.
正解:
解説:
Createapartitionhavingsize5GBandchangethesysteid'8e'.
usepartprobecommand
pvcreate/dev/hda9Supposeyourpartitionnumberishda9.
vgextendtest0/dev/hda9vgextendcommandaddthephysicaldiskonvolumegroup.
lvextend-L+5120M/dev/test0/lvtestvolume
verifyusinglvdisplay/dev/test0/lvtestvolume.
質問 69
CORRECT TEXT
Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.
正解:
解説:
#cp/etc/fstab/var/tmp/
#chgrpadmin/var/tmp/fstab
#setfacl-mu:user1:rwx/var/tmp/fstab
#setfacl-mu:user2:---/var/tmp/fstab
#ls-l-rw-rw-r--+1rootadmin685Nov1015:29/var/tmp/fstab
質問 70
CORRECT TEXT
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server.
How will make successfully ping to 192.168.1.0/24 Network's Host?
正解:
解説:
vi/etc/sysconfig/networkGATEWAY=192.168.0.254ORvi/etc/sysconf/network-scripts/ifcfg-eth0DEVICE=eth0BOOTPROTO=staticONBOOT=yesIPADDR=192.168.0.?NETMASK=255.255.255.0GATEWAY=192.168.0.254
servicenetworkrestartGatewaydefinesthewaytoexitthepackets.AccordingtoquestionSystemworkingasarouterfortwonetworkshaveIPAddress192.168.0.254and192.168.1.254.
質問 71
CORRECT TEXT
Some users home directory is shared from your system. Using showmount -e localhost command, the shared directory is not shown. Make access the shared users home directory.
正解:
解説:
VerifytheFilewhetherSharedornot?:cat/etc/exports
Startthenfsservice:servicenfsstart
Starttheportmapservice:serviceportmapstart
Makeautomaticallystartthenfsserviceonnextreboot:chkconfignfson
Makeautomaticallystarttheportmapserviceonnextreboot:chkconfigportmapon
Verifyeithersharingornot:showmount-elocalhost
Checkthatdefaultfirewallisrunningonsystem?Ifrunningflushtheiptablesusingiptables-Fandstoptheiptablesservice.
質問 72
CORRECT TEXT
Configure your NFS services. Share the directory by the NFS Shared services.
正解:
解説:
/etc/init.d/rpcbindstart/etc/init.d/nfslockstart/etc/init.d/nfsstartchkconfigrpcbindonchkconfignfslockonchkconfignfsonshowmount-elocalhost
質問 73
CORRECT TEXT
Configure a task: plan to run echo hello command at 14:23 every day.
正解:
解説:
#whichecho
#crontab-e2314***/bin/echohellos
#crontab-l(Verify)
質問 74
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 75
CORRECT TEXT
Upgrading the kernel as 2.6.36.7.1, and configure the system to Start the default kernel, keep the old kernel available.
正解:
解説:
#cat/etc/grub.conf
#cd/boot
#lftpit
#getdr/dom/kernel-xxxx.rpm
#rpm-ivhkernel-xxxx.rpm
#vim/etc/grub.confdefault=0
質問 76
CORRECT TEXT
Create the following users, groups, and group memberships:
A group named adminuser.
A user natasha who belongs to adminuser as a secondary group A user harry who also belongs to adminuser as a secondary group.
A user sarah who does not have access to an interactive shell on the system, and who is not a member of adminuser, natasha, harry, and sarah should all have the password of redhat.
正解:
解説:
groupaddsysmgrs
useradd-GsysmgrsNatasha
Wecanverifythenewlycreateduserbycat/etc/passwd)
#useradd-Gsysmgrsharry
#useradd-s/sbin/nologinsarrh
#passwdNatasha
#passwdharry
#passwdsarrah
質問 77
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