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2021 Apr EX200 exam question

Q1. CORRECT TEXT 

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 


Q2. CORRECT TEXT 

Configure a task: plan to run echo hello command at 14:23 every day. 

Answer: # which echo 

# crontab -e 

23 14 * * * /bin/echo hello 

# crontab -l (Verify) 


Q3. CORRECT TEXT 

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 


Q4. CORRECT TEXT 

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 

: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 


Q5. CORRECT TEXT 

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 


Avant-garde EX200 exam answers:

Q6. CORRECT TEXT 

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/ \; 


Q7. CORRECT TEXT 

Configure the system synchronous as 172.24.40.10. 

Answer: Graphical Interfaces: 

System-->Administration-->Date & Time 

OR 

# system-config-date 


Q8. 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. 

Answer: # yum install -y httpd 

# chkconfig httpd on 

# 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> 


Q9. CORRECT TEXT 

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) 


Q10. CORRECT TEXT 

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