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RedHat

EX200

Red Hat Certified System Administrator (RHCSA)

https://killexams.com/pass4sure/exam-detail/EX200

Question: 126

CORRECT TEXT

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: see explanation below. Explanation

# cd /home/

# mkdir admins /

# chown .admin admins/

# chmod 770 admins/

# chmod g+s admins/ Question: 127 CORRECT TEXT

Create a user named alex, and the user id should be 1234, and the password should be alex111.

Answer: see explanation below. Explanation

# useradd -u 1234 alex

# passwd alex alex111 alex111

echo alex111|passwd -stdin alex

Question: 128

CORRECT TEXT

Create a Shared Directory.

Create a shared directory /home/admins, make it has the following characteristics:

/home/admins belongs to group adminuser

This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.

Answer: see explanation below.

Explanation

mkdir /home/admins

chgrp -R adminuser /home/admins chmodg+w /home/admins chmodg+s /home/admins

Question: 129

CORRECT TEXT

Configure a user account.

Create a user iar ï¼Œ uid is 3400. Password is redhat

Answer: see explanation below.

Explanation useradd -u 3400 iar passwd iar

Question: 130

CORRECT TEXT

Create User Account.

Create the following user, group and group membership:

Adminuser group

User natasha, using adminuser as a sub group User Harry, also using adminuser as a sub group

User sarah, can not access the SHELL which is interactive in the system, and is not a member of adminuser, natasha ï¼Œ harry ï¼Œ sarah password is redhat.

Answer: see explanation below.

Explanation groupadd adminuser

useradd natasha -G adminuser useradd haryy -G adminuser useradd sarah -s /sbin/nologin

Passwd user name // to modify password or echo redhat | passwd –stdin user name id natasha // to view user group.

Question: 131

CORRECT TEXT

Configure the verification mode of your host account and the password as LDAP. And it can login successfully through ldapuser40. The password is set as "password". And the certificate 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: see explanation below.

Explanation

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

Question: 132

CORRECT TEXT

Configure a default software repository for your system.

One YUM has already provided to configure your system on http://server.domain11.example.com/pub/ x86_64/Server, and can be used normally.

Answer: see explanation below. Explanation

Yum-config-manager –add-repo=http://content.example.com/rhel7.0/x86-64/dvdâ€ is to generate a file vim content.example.com_rhel7.0_x86_64_dvd.repo, Add a line gpgcheck=0

Yumcleanall Yumrepolist

Almost 4305 packages are right, Wrong Yum Configuration will lead to some following questions cannot be worked out.

Question: 133

CORRECT TEXT

Binding to an external validation server.

System server.domain11.example.com provides a LDAP validation service, your system should bind to this service as required:

Base DN of validation service is dc=example,dc=com

LDAP is used for providing account information and validation information Connecting and using the certification of http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to encrypt

After the correct configuration, ldapuser1 can log into your system, it does not have HOME directory until you finish autofs questions, ldapuser1 password is password.

Answer: see explanation below.

Explanation

yum -y install sssd authconfig-gtk krb5-workstation authconfig-gtk // open the graphical interface

Modify user account database to ldap, fill up DN and LDAP SERVER as questions required, use TLS to encrypt connections making tick, write http://server.domain11.example.com/pub/EXAMPLE-CA-CERT to download ca, authentication method choose ldap password.

You can test if the ldapuser is added by the following command: Id ldapuser1

Note: user password doesnâ€™t not need to set

Question: 134

CORRECT TEXT

Adjust the size of the Logical Volume.

Adjust the size of the vo Logical Volume, its file system size should be 290M. Make sure that the content of this system is complete.

Note: the partition size is rarely accurate to the same size as required, so in the range 270M to 320M is acceptable.

Answer: see explanation below. Explanation

Addition df -hT

lvextend -L +100M /dev/vg0/vo Lvscan

xfs_growfs /home/ //home is the mounted directory of the LVM, this step just need to do in the practice environment, and test EXT4 does not need this step.

resize2fs /dev/vg0/vo// use this command to update in examination. df -hT

Subtraction

e2fsck -f/dev/vg0/vo umount /home

resize2fs /dev/vg0/vo // the final required partition capacity is 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo/home

df -hT

Question: 135

CORRECT TEXT

Configure NTP.

Configure NTP service, Synchronize the server time, NTP server: classroom.example.com

Answer: see explanation below. Explanation

Configure the client: Yum -y install chrony Vim /etc/chrony.conf

Add: server classroom.example.com iburst Start: systemctl enable chronyd

systemctl restart chronyd Validate: timedatectl status Question: 136 CORRECT TEXT

Search a String

Find out all the columns that contains the string seismic within /usr/share/dict/words, then copy all these columns to

/root/lines.tx in original order, there is no blank line, all columns must be the accurate copy of the original columns.

Answer: see explanation below.

Explanation

grep seismic /usr/share/dict/words> /root/lines.txt

Question: 137

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: see explanation below. Explanation

# 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

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