RedHat RHCE 問題集

質問 1：
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：
ftpserver.domain11.example.comAnonymousloginftp>cd/pub/updatesftp>lsftp>mgetkernel*ftp>bye
rpm-ivhkernel*
vim/etc/grub.confChecktheupdattedkernelisthefirstkernelandtheorginalkernelremainsavailable.setdefault=0wq!

質問 2：
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：
#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 3：
CORRECT TEXT
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
正解：
#fdisk/dev/sdap(checkPartitiontable)n(createnewpartition:pressetocreateextendedpartitionpressptocreatethemainpartitionandtheextendedpartitionisfurtherdividedintologicalpartitions)Enter+2Gt8I82Wpartx-a/dev/sdapartprobemkswap/dev/sda8CopyUUIDswapon-avim/etc/fstabUUID=XXXXXswapswapdefaults00(swapon-s)

質問 4：
CORRECT TEXT
1. Find all sizes of 10k file or directory under the /etc directory, and copy to /tmp/findfiles directory.
2. Find all the files or directories with Lucy as the owner, and copy to /tmp/findfiles directory.
正解：
(1)find/etc-size10k-execcp{}/tmp/findfiles\;(2)find/-userlucy-execcp-a{}/tmp/findfiles\;Note:Iffindusersandpermissionsyouneedtousecp-aoptionstokeepfilepermissionsanduserattributesetc.

質問 5：
CORRECT TEXT
Create a user named alex, and the user id should be 1234, and the password should be alex111.
正解：
#useradd-u1234alex
#passwdalexalex111alex111ORechoalex111|passwd-stdinalex

質問 6：
CORRECT TEXT
Your System is going use as a router for 172.24.0.0/16 and 172.25.0.0/16. Enable the IP Forwarding.
1. echo "1" >/proc/sys/net/ipv4/ip_forward
2. vi /etc/sysctl.conf net.ipv4.ip_forward=1
正解：
/procisthevirtualfilesystemcontainingtheinformationabouttherunningkernel.Tochangetheparameterofrunningkernelyoushouldmodifyon/proc.FromNextrebootthesystemkernelwilltakethevaluefrom/etc/sysctl.conf.

質問 7：
CORRECT TEXT
Configure the NTP service in your system.
正解：
see explanation below. Explanation system-config-date &


質問 8：
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：
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