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Vendor: RedHat
Certifications: RHCSA
Exam Name: Red Hat Certified System Administrator – RHCSA
Exam Code: EX200
Total Questions: 24 Q&As
QUESTION 1
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.
Correct Answer:
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/
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.
Correct Answer:
# useradd -G admin harry
# useradd -G admin natasha
# useradd -s /sbin/nologin 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. EX200 dumps The files created by users from the same group should also be the admin group.
Correct Answer:
# cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/
QUESTION 4
Configure a task: plan to run echo hello command at 14:23 every day.
Correct Answer:
# which echo
# crontab –e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
QUESTION 5
Copy it to catalog: /opt/dir
Correct Answer:
# cd /opt/
# mkdir dir
# find / -user harry -exec cp -rfp {} /opt/dir/ \;
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.
Correct Answer:
# cat /etc/testfile | while read line;
# echo $line | grep abcde | tee -a
/tmp/testfile done
OR
grep `abcde’ /etc/testfile >
/tmp/testfile
QUESTION 7
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
Correct Answer:
# fdisk /dev/sda
(check Partition table)
(create new partition: press e to create extended partition, press p to create the main partition, and theextended partition is further divided into logical partitions) Enter
# partx -a /dev/sda
# partprobe
# mkswap /dev/sda8
# Copy UUID
# swapon -a
# vim /etc/fstab
UUID=XXXX 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.
Correct 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. EX200 dumps (it needs you to configure yum direct to the already existing file server.)
Correct Answer:
# cd /etc/yum.repos.d
# vim local.repo
[local]
name=local.repo
baseurl=file:///mnt
enabled=1
gpgcheck=0
# 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 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.
Correct 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
QUESTION 11
Configure the system synchronous as 172.24.40.10.
Correct Answer:
Graphical Interfaces:
System–>Administration–>Date & Time
OR
# system-config-date
QUESTION 12
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.)
Correct 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)
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