[2021-New] Red Hat EX200 Dumps With Update Exam Questions (21-27)

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Q1. 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

Q2. CORRECT TEXT

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

# yum makecache

# yum install -y vsftpd

# service vsftpd restart

# chkconfig vsftpd on

# chkconfig --list vsftpd

# vim /etc/vsftpd/vsftpd.conf

anonymous_enable=YES

Q3. CORRECT TEXT

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

Q4. 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

Q5. CORRECT TEXT

Configure the system synchronous as 172.24.40.10.

Answer: Graphical Interfaces:

System-->Administration-->Date & Time

# system-config-date

Q6. 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

Q7. CORRECT TEXT

Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.

Answer: # cp /etc/fstab /var/tmp/

# chgrp admin /var/tmp/fstab

# setfacl -m u:user1:rwx /var/tmp/fstab

# setfacl -m u:user2:--- /var/tmp/fstab

# ls -l

-rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab