Red Hat EX200 Exam | EnsurePass.com
Red Hat RHCSA EX200 Exam
Vendor: Red Hat Exam Code: EX200 Exam Name: Red Hat Certified System Administrator (RHCSA) Version: 13.04 Q & As: 67
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Exam Times: RHCSA: Two and a half hours. Pass Scores: Total 300 points. Pass at 210 points. Exam Environment:
Take examinations on a real system with a pre-installed virtual machine. All exams must be completed in the virtual machine. Network must be well configured. If the network cannot be accessed, you will not pass the exam. In the iptables configuration, if you need to refuse the access, please use “Reject”. (The default is set as ACCEPT.) Note: All the CD-ROM package has in http://ip/dir/cdom under. You can use the real machine to verify that the exam experiment in the virtual machine is properly completed. domain40.example.com domain 172.24.40.0/24 network. tracker.com domain 172.16.0.0/16 network, general network rejected the meaning of the questions asked. Boot the first thing iptables-F iptables-X iptables-Z service iptables save
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QUESTION 1 Configure your Host Name, IP Address, Gateway and DNS. Host name: station.domain40.example.com IP Address:172.24.40.40/24 Gateway172.24.40.1 DNS:172.24.40.1 Answer: LANG= system-config-network-tui (Config ip address, subnet mask, gateway, DNS, host name, the default search domain.) /etc/init.d/NetworkManager restart vim /etc/hosts 172.24.40.40 station.domain40.example.com View Configuration: cat /etc/sysconfig/network-scripts/ifcfg-eth0 IPADDR=172.24.40.40 GATEWAY=172.24.40.1 DNS1=172.24.40.1 cat /etc/resolv.conf search domain40.example.com nameserver 172.24.40.1 cat /etc/sysconfig/network HOSTNAME=station.domain40.example.com cat /etc/hosts 172.24.40.40 station.domain40.example.com OR Graphical Interfaces: System->Preference->Network Connections (Configure IP Address, Gateway and DNS) Vim /etc/sysconfig/network (Configure Host Name)
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QUESTION 2 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. Three user password set uplooking. Answer: # groupadd admin # useradd -G admin harry # useradd -G admin natasha # useradd -s /sbin/nologin tom # echo uplooking | passwd --stdin harry # echo uplooking | passwd --stdin natasha # echo uplooking | passwd --stdin tom # id harry;id Natasha (Show additional group) # cat /etc/passwd (Show the login shell) OR # system-config-users
QUESTION 3 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. Answer: # cd /home/ # mkdir admins / # chown .admin admins/ # chmod 770 admins/ # chmod g+s admins/
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QUESTION 4 Configure a task: plan to run echo hello command at 14:23 every day. Answer: # which echo # crontab -e 23 14 * * * /bin/echo hello >> /tmp/hello.log # crontab -l (Verify)
QUESTION 5 Find the files owned by harry, and copy it to catalog: /opt/dir Answer: # cd /opt/ # mkdir dir # find / -user harry -exec cp -rfp {} /opt/dir/ \; (-rf Forced recursive, -p copies permissions)
QUESTION 6 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.
Answer: # cat /etc/testfile | while read line; do echo $line | grep abcde | tee -a /tmp/testfile done OR grep `abcde' /etc/testfile > /tmp/testfile
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QUESTION 7 Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition. Answer: #fdisk /dev/sda p-n-e- Write the last partition on the cylindrical metal plus 1-Enter-p-n-Enter-+2G-t-5-82-W partx -a /dev/sda (Executed twice) partx -a /dev/sda (partprobe used in RHEL5) mkswap /dev/sda5 Copy UUID swapon /dev/vda5 vim /etc/fstab UUID=XXXXX swap swap defaults 0 0 (swapon -s)
QUESTION 8 Create a user named alex, and the user id should be 1234, and the password should be alex111. Answer: # useradd -u 1234 alex # passwd alex alex111 alex111 OR echo alex111|passwd -stdin alex
QUESTION 9 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. ) Answer: # cd /etc/yum.repos.d # vim local.repo [local] name=local.repo baseurl=file:///mnt enabled=1 gpgcheck=0 Contact Us: support@ensurepass.com. Copyright Š 2014 by EnsurePass.com. All rights reserved.
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# yum makecache # yum install -y vsftpd # service vsftpd restart # chkconfig vsftpd on # chkconfig --list vsftpd # vim /etc/vsftpd/vsftpd.conf anonymous_enable=YES
QUESTION 10 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. Answer: # yum install -y httpd # chkconfig httpd on # service httpd start # cd /var/www/html # wget http://ip/dir/example.html # cp example.com index.html # vim /etc/httpd/conf/httpd.conf NameVirtualHost 192.168.0.254:80 <VirtualHost 192.168.0.254:80> DocumentRoot /var/www/html/ ServerName station.domain40.example.com </VirtualHost>
QUESTION 11 Configure the verification mode of your host account and the password as LDAP. And it can ldapuser40. The password is set as "password". And the certificate login successfully through can be downloaded from http://ip/dir/ldap.crt. After the user logs on , the user has no host directory unless you configure the autofs in the following questions. Answer: system-config-authentication LDAP Server: ldap//instructor.example.com (In domain form, not write IP) OR # yum groupinstall directory-client (1.krb5-workstation 2.pam-krb5 3.sssd) # system-config-authentication 1. User Account Database: LDAP Contact Us: support@ensurepass.com. Copyright Š 2014 by EnsurePass.com. All rights reserved.
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2. LDAP Search Base DN: dc=example,dc=com 3. LDAP Server: ldap://instructor.example.com (In domain form, not write IP) 4. Download CA Certificate 5. Authentication Method: LDAP password 6. Apply getent passwd ldapuser40
QUESTION 12 Configure autofs to make sure after login successfully, it has the home directory autofs, which is shared as /rhome/ldapuser40 at the ip: 172.24.40.10. and it also requires that, other ldap users can use the home directory normally. Answer: # chkconfig autofs on # cd /etc/ # vim /etc/auto.master /rhome /etc/auto.ldap # cp auto.misc auto.ldap # vim auto.ladp ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40 * -rw,soft,intr 172.16.40.10:/rhome/& # service autofs stop # server autofs start # showmount -e 172.24.40.10 # su - ladpuser40
QUESTION 13 Configure the system synchronous as 172.24.40.10. Answer: Graphical Interfaces: System-->Administration-->Date & Time OR # system-config-date (Checking the following three) Synchronize date and time over the network Speed up initial synchronization Use Local Time Source Add->Time server ip->OK
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QUESTION 14 Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.) Answer: # vgdisplay (Check the capacity of vg, if the capacity is not enough, need to create pv , vgextend , lvextend) # lvdisplay (Check lv) # lvextend -L +110M /dev/vg2/lv2 # resize2fs /dev/vg2/lv2 mount -a (Verify) ------------------------------------------------------------------------------- (Decrease lvm) # umount /media # fsck -f /dev/vg2/lv2 # resize2fs -f /dev/vg2/lv2 100M # lvreduce -L 100M /dev/vg2/lv2 # mount -a # lvdisplay (Verify) OR # e2fsck -f /dev/vg1/lvm02 # resize2fs -f /dev/vg1/lvm02 # mount /dev/vg1/lvm01 /mnt # lvreduce -L 1G -n /dev/vg1/lvm02 # lvdisplay (Verify)
QUESTION 15 Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data. Answer: # pvcreate /dev/sda7 /dev/sda8 # vgcreate -s 16M vg1 /dev/sda7 /dev/sda8 # lvcreate -l 50 -n lvm02 # mkfs.ext4 /dev/vg1/lvm02 # blkid /dev/vg1/lv1 # vim /etc/fstab # mkdir -p /mnt/data UUID=xxxxxxxx /mnt/data ext4 defaults 0 0 Contact Us: support@ensurepass.com. Copyright Š 2014 by EnsurePass.com. All rights reserved.
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# vim /etc/fstab # mount -a # mount (Verify)
QUESTION 16 Upgrading the kernel as 2.6.36.7.1, and configure the system to Start the default kernel, keep the old kernel available. Answer: # cat /etc/grub.conf # cd /boot # lftp it # get dr/dom/kernel-xxxx.rpm # rpm -ivh kernel-xxxx.rpm # vim /etc/grub.conf default=0
QUESTION 17 Create a 512M partition, make it as ext4 file system, mounted automatically under /mnt/data and which take effect automatically at boot-start. Answer: # fdisk /dev/vda n +512M w # partprobe /dev/vda # mkfs -t ext4 /dev/vda5 # mkdir -p /data # vim /etc/fstab /dev/vda5 /data ext4 defaults 0 0 # mount -a
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QUESTION 18 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. Answer: # fdisk # partprobe # pvcreate /dev/vda6 # vgcreate -s 8M vg1 /dev/vda6 -s # lvcreate -n lvshare -l 50 vg1 -l # mkfs.ext4 /dev/vg1/lvshare # mkdir -p /mnt/data # vim /etc/fstab /dev/vg1/lvshare /mnt/data ext4 defaults 0 0 # mount -a # df -h
QUESTION 19 Download ftp://192.168.0.254/pub/boot.iso to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start. Answer: # cd /root; wget ftp://192.168.0.254/pub/boot.iso # mkdir -p /media/cdrom # vim /etc/fstab /root/boot.iso /media/cdrom iso9660 defaults,loop 0 0 # mount -a mount [-t vfstype] [-o options] device dir
QUESTION 20 Add admin group and set gid=600 Answer: # groupadd -g 600 admin
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