EX200 Practice Exam Questions and Answers

# cd /etc/syscofig/network-scripts/

# ls

# vim ifcfg-eth0 (Configure IP Address, Gateway and DNS) IPADDR=172.24.40.40

GATEWAY=172.24.40.1

DNS1=172.24.40.1

# vim /etc/sysconfig/network

(Configure Host Name)

HOSTNAME= station.domain40.example.com

OR

Graphical Interfaces:

System->Preference->Network Connections (Configure IP Address, Gateway and DNS) Vim /etc/sysconfig/network

(Configure Host Name)

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

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

(a) Created as administrator

# crontab -u natasha -e

23 14 * * * /bin/echo "file"

(b)Created as natasha

# su - natasha

$ crontab -e

23 14 * * * /bin/echo "file"

cd /var/www/html

wget http://instructor.example.com/pub/serverX.html mv serverX.html index.html /etc/init.d/httpd restart

chkconfig httpd on

• if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile

/etc/fstab:

/swapfile swap swap defaults 0 0 mount -a

Download the new kernel file and then install it.

[root@desktop8 Desktop]# ls

kernel-2.6.32-71.7.1.el6.x86_64.rpm

kernel-firmware-2.6.32-71.7.1.el6.noarch.rpm

[root@desktop8 Desktop]# rpm -ivh kernel-*

Preparing... ###########################################

[100%]

1:kernel-firmware

########################################### [ 50%]

2:kernel

########################################### [100%]

Verify the grub.conf file, whether use the new kernel as the default boot. [root@desktop8 Desktop]# cat /boot/grub/grub.conf default=0

title Red Hat Enterprise Linux Server (2.6.32-71.7.1.el6.x86_64)

root (hd0,0)

kernel /vmlinuz-2.6.32-71.7.1.el6.x86_64 ro root=/dev/mapper/vol0-root rd_LVM_LV=vol0/root rd_NO_LUKS rd_NO_MD

rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet

initrd /initramfs-2.6.32-71.7.1.el6.x86_64.img

*

1. Reboot the server pressing by Ctrl+Alt+Del

2. When the boot-loader menu appears, press the cursor keys to highlight the default boot-loader entry

3. Press e to edit the current entry.

4. Use the cursor keys to navigate to the line that starts with linux.

5. Press End to move the cursor to the end of the line.

6. Append rd.break to the end of the line.

7. Press Ctrl+x to boot using the modified configuration.

8. At the switch_root prompt

*

switch_root:/# mount -o remount,rw /sysroot

switch_root:/# chroot /sysroot

sh-4.4# echo kexdrams | passwd --stdin root

Changing password for user root.

passwd: all authentication tokens updated successfully.

sh-4.4# touch /.autorelabel

sh-4.4# exit; exit

*

Type exit twice to continue booting your system as usual.

grep seismic /usr/share/dict/words> /root/wordlist

yum install vsftpd

/etc/init.d/vsftpd start

chkconfig vsftpd on

cp /etc/fstab /var/tmp

chown root:root /var/tmp/fstab

chmod a-x /var/tmp/fstab

setfacl –m u:mary:rw /var/tmp/fstab

setfacl –m u:alice:rx /var/tmp/fstab

useradd –u 1000 bob