[2023年01月30日] 無料RedHat RHCE試験問題と解答
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質問 62
CORRECT TEXT
Create a 512M partition, make it as ext4 file system, mounted automatically under /mnt/data and which take effect automatically at boot-start.
正解:
解説:
#fdisk/dev/vdan+512Mw
#partprobe/dev/vda
#mkfs-text4/dev/vda5
#mkdir-p/data
#vim/etc/fstab/dev/vda5/dataext4defaults00
#mount-a
質問 63
CORRECT TEXT
A YUM source has been provided in the http://instructor.example.com/pub/rhel6/dvd
Configure your system and can be used normally.
正解:
解説:
/etc/yum.repos.d/base.repo[base]name=basebaseurl=http://instructor.example.com/pub/rhel6/dvdgpgcheck=0yumlist
質問 64
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 65
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 66
CORRECT TEXT
There is a server having 172.24.254.254 and 172.25.254.254. Your System lies on 172.24.0.0/16. Make successfully ping to 172.25.254.254 by Assigning following IP: 172.24.0.x where x is your station number.
正解:
解説:
Usenetconfigcommand
EntertheIPAddressasgivenstationnumberbyyourexaminer:example:172.24.0.1
EnterSubnetMask
EnterDefaultGatewayandprimarynameserver
pressonok
ifdowneth0
ifupeth0
verifyusingifconfigInthelabserverisplayingtheroleofrouterIPforwardingisenabled.JustsettheCorrectIPandgatewayyoucanpingto172.25.254.254.
質問 67
CORRECT TEXT
Configure the permissions of /var/tmp/fstab
Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:
the file /var/tmp/fstab is owned by the root user.
the file /var/tmp/fstab belongs to the group root.
the file /var/tmp/fstab should not be executable by anyone.
the user natasha is able to read and write /var/tmp/fstab.
the user harry can neither write nor read /var/tmp/fstab.
all other users (current or future) have the ability to read /var/tmp/fstab.
正解:
解説:
cp-a/etc/fstab/var/tmp
cd/var/tmp
ls-l
getfacl/var/tmp/fstab
chmodugo-x/var/tmp/fstab[Noneedtodothistherewon'tbeexecutepermissionforthefilebydefault]
#setfacl-mu:natasha:rw/var/tmp/fstab
#setfacl-mu:harry:0/var/tmp/fstab(zero)[Readpermissionwillbethereforalltheusersbydefault.Checkitusingls-l/var/tmp/fstab]Verifyby[ls-la/var/tmp/fstab]
質問 68
CORRECT TEXT
Copy /etc/fstab document to /var/TMP directory. According the following requirements to configure the permission of this document.
The owner of this document must be root.
This document belongs to root group.
User mary have read and write permissions for this document.
User alice have read and execute permissions for this document.
Create user named bob, set uid is 1000. Bob have read and write permissions for this document.
All users has read permission for this document in the system.
正解:
解説:
cp/etc/fstab/var/tmpchownroot:root/var/tmp/fstabchmoda-x/var/tmp/fstabsetfacl-mu:mary:rw/var/tmp/fstabsetfacl-mu:alice:rx/var/tmp/fstabuseradd-u1000bob
質問 69
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 70
CORRECT TEXT
Configure iptables, there are two domains in the network, the address of local domain is 172.24.0.0/16 other domain is 172.25.0.0/16, now refuse domain 172.25.0.0/16 to access the server.
正解:
解説:
below
iptables-F
serviceiptablessave
iptables-AINPUT-s172.25.0.0/16-jREJECT
serviceiptablessave
serviceiptablesrestart
質問 71
CORRECT TEXT
Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).
正解:
解説:
if=/dev/zeroof=/swapfilebs=1Mcount=600mkswap/swapfile/etc/fstab:/swapfileswapswapdefaults00mount-a
質問 72
CORRECT TEXT
Create User Account.
Create the following user, group and group membership:
Adminuser group
User natasha, using adminuser as a sub group
User Harry, also using adminuser as a sub group
User sarah, can not access the SHELL which is interactive in the system, and is not a member of adminuser, natasha , harry , sarah password is redhat.
正解:
解説:
groupaddadminuseruseraddnatasha-Gadminuseruseraddharyy-Gadminuseruseraddsarah-s/sbin/nologinPasswdusername//tomodifypasswordorechoredhat|passwd--stdinusernameidnatasha//toviewusergroup.
質問 73
CORRECT TEXT
Create the user named eric and deny to interactive login.
正解:
解説:
useradderic
passwderic
vi/etc/passwd
eric:x:505:505::/home/eric:/sbin/nologinWhichshellorprogramshouldstartatlogintimeisspecifiedin/etc/passwdfile?BydefaultRedhatEnterpriseLinuxassignsthe/bin/bashshelltotheusers.Todenytheinteractiveloginyoushouldwrite/sbin/nologinor/bin/falseinsteadofloginshell.
質問 74
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 75
CORRECT TEXT
Create a new logical volume according to the following requirements:
The logical volume is named database and belongs to the datastore volume group and has a size of 50 extents.
Logical volumes in the datastore volume group should have an extent size of 16 MB.
Format the new logical volume with a ext3 filesystem.
The logical volume should be automatically mounted under /mnt/database at system boot time.
正解:
解説:
fdisk-cu/dev/vdapartx-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-a
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
CORRECT TEXT
Locate all the files owned by ira and copy them to the / root/findresults directory.
正解:
解説:
#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 78
CORRECT TEXT
Create a catalog under /home named admins. Its respective group is requested to be the admin group. The group users could read and write, while other users are not allowed to access it. The files created by users from the same group should also be the admin group.
正解:
解説:
#cd/home/
#mkdiradmins/
#chown.adminadmins/
#chmod770admins/
#chmodg+sadmins/
質問 79
CORRECT TEXT
Configure a HTTP server, which can be accessed through http://station.domain40.example.com.
Please download the released page from http://ip/dir/example.html.
正解:
解説:
#yuminstall-yhttpd
#chkconfighttpdon
#cd/var/www/html
#wgethttp://ip/dir/example.html
#cpexample.comindex.html
#vim/etc/httpd/conf/httpd.confNameVirtualHost192.168.0.254:80<VirtualHost192.168.0.254:80>DocumentRoot/var/www/html/ServerNamestation.domain40.example.com</VirtualHost>
質問 80
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 81
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 82
CORRECT TEXT
You have a domain named www.rhce.com associated IP address is 192.100.0.2. Configure the Apache web server by implementing the SSL for encryption communication.
正解:
解説:
vi/etc/httpd/conf.d/ssl.conf<VirtualHost192.100.0.2>ServerNamewww.rhce.comDocumentRoot/var/www/rhceDirectoryIndexindex.htmlindex.htmServerAdminwebmaster@rhce.comSSLEngineonSSLCertificateFile/etc/httpd/conf/ssl.crt/server.crtSSLCertificateKeyFile/etc/httpd/conf/ssl.key/server.key</VirtualHost>
cd/etc/httpd/conf3maketestcert
Createthedirectoryandindexpageonspecifiedpath.(Indexpagecandownloadfromftp://server1.example.comatexamtime)
servicehttpdstart|restart
chkconfighttpdonApachecanprovideencryptedcommunicationsusingSSL(SecureSocketLayer).Tomakeuseofencryptedcommunicationaclientmustrequesttohttpsprotocolwhichisusesport443.ForHTTPSprotocolrequiredthecertificatefileandkeyfile.
質問 83
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