RedHat RHCE 問題集

質問 1：
CORRECT TEXT
Make a swap partition having 100MB. Make Automatically Usable at System Boot Time.
正解：
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 2：
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：
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 3：
CORRECT TEXT
SELinux must be running in the Enforcing mode.
正解：
getenforce//CheckthecurrentmodeofSELinux//SELinuxrunsinenforcingmode//Checkgetenforce1getenforcevim/etc/selinux/configselinux=enforcing//TotemporarilyenableSELinuxwgsestatus

質問 4：
CORRECT TEXT
In the system, mounted the iso image /root/examine.iso to/mnt/iso directory. And enable automatically mount (permanent mount) after restart system.
正解：
mkdir-p/mnt/iso/etc/fstab:/root/examine.iso/mnt/isoiso9660loop00mount-amount|grepexamine

質問 5：
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：
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 6：
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：
cp/etc/fstab/var/tmp/
/var/tmp/fstabviewtheownersetfacl-mu:natasha:rw-/var/tmp/fstabsetfacl-mu:haryy:---/var/tmp/fstabUsegetfacl/var/tmp/fstabtoviewpermissions

質問 7：
CORRECT TEXT
Locate all the files owned by ira and copy them to the / root/findresults directory.
正解：
#find/-userira>/root/findresults(if/root/findfilesisafile)
#mkdir-p/root/findresults
#find/-userira-execcp-a{}/root/findresults\;[if/root/findfilesisadirectory]ls/root/findresults

質問 8：
CORRECT TEXT
Install the Kernel Upgrade.
Install suitable kernel update from:
http://server.domain11.example.com/pub/updates.
Following requirements must be met:
Updated kernel used as the default kernel of system start-up.
The original kernel is still valid and can be guided when system starts up.
正解：
UsingthebrowseropentheURLinthequestiondownloadkernelfiletorootorhomedirectory.uname-r//checkthecurrentkernelversionrpm-ivhkernel-*.rpmvi/boot/grub.conf//checkSomequestionsare:Installandupgradethekernelasrequired.Toensurethatgrub2isthedefaultitemforstartup.Yumrepo:http://content.example.com/rhel7.0/x86-64/errataORuname-r//checkkernelYum-config-manager--add-repo="http://content.example.com/rhel7.0/x86-64/errata"YumcleanallYumlistkernel//installdirectlyYum-yinstallkernel//stuckwithitdonotpipe!Pleasedonotpipe!Defaultenablenewkernelgrub2-editenvlist//checkModifygrub2-set-default"kernelfullname"Grub2-mkconfig-o/boot/grub2/grub.cfg//Refresh