RHCE 無料問題集「RedHat Red Hat Certified Engineer - RHCE」
CORRECT TEXT
Configure a user account.
Create a user iar , uid is 3400. Password is redhat
Configure a user account.
Create a user iar , uid is 3400. Password is redhat
正解：
useradd-u3400iarpasswdiar
CORRECT TEXT
Configure a cron Task.
User natasha must configure a cron job, local time 14:23 runs and executes: */bin/echo hiya every day.
Configure a cron Task.
User natasha must configure a cron job, local time 14:23 runs and executes: */bin/echo hiya every day.
正解：
crontab-e-unatasha2314/bin/echohiyacrontab-l-unatasha//viewsystemctlenablecrondsystemcdlrestartcrond
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.
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
/var/tmp/fstabviewtheownersetfacl-mu:natasha:rw-/var/tmp/fstabsetfacl-mu:haryy:---/var/tmp/fstabUsegetfacl/var/tmp/fstabtoviewpermissions
CORRECT TEXT
Make on /archive directory that only the user owner and group owner member can fully access.
Make on /archive directory that only the user owner and group owner member can fully access.
正解：
chmod770/archive
Verifyusing:ls-ld/archivePreviewshouldbelike:drwxrwx---2rootsysuser4096Mar1618:08/archiveTochangethepermissionondirectoryweusethechmodcommand.Accordingtothequestionthatonlytheowneruser(root)andgroupmember(sysuser)canfullyaccessthedirectoryso:chmod770/archive
Verifyusing:ls-ld/archivePreviewshouldbelike:drwxrwx---2rootsysuser4096Mar1618:08/archiveTochangethepermissionondirectoryweusethechmodcommand.Accordingtothequestionthatonlytheowneruser(root)andgroupmember(sysuser)canfullyaccessthedirectoryso:chmod770/archive
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?
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：
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.
servicenetworkrestartGatewaydefinesthewaytoexitthepackets.AccordingtoquestionSystemworkingasarouterfortwonetworkshaveIPAddress192.168.0.254and192.168.1.254.
CORRECT TEXT
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
正解：
groupaddadminuseradd-Gadminmaryuseradd-Gadminaliceuseradd-s/sbin/nologinbobbyecho"password"|passwd--stdinmaryecho"password"|passwd--stdinaliceecho"password"|passwd--stdinbobby
CORRECT TEXT
Please open the ip_forward, and take effect permanently.
Please open the ip_forward, and take effect permanently.
正解：
vim/etc/sysctl.confnet.ipv4.ip_forward=1
sysctl-w(takeseffectimmediately)Ifno"sysctl.conf"optionusethesecommands:
sysctl-a|grepnet.ipv4
sysctl-Pnet.ipv4.ip_forward=1
sysctl-w
sysctl-w(takeseffectimmediately)Ifno"sysctl.conf"optionusethesecommands:
sysctl-a|grepnet.ipv4
sysctl-Pnet.ipv4.ip_forward=1
sysctl-w