100% Guarantee EX200 Study Guides 2021

NEW QUESTION 1
Find the files owned by harry, and copy it to catalog: /opt/dir

Answer:

Explanation: # cd /opt/
# mkdir dir
# find / -user harry -exec cp -rfp {} /opt/dir/ ;

NEW QUESTION 2
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:

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

NEW QUESTION 3
SELinux must run in force mode.

Answer:

Explanation: /etc/sysconfig/selinux
SELINUX=enforcing

NEW QUESTION 4
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.

Answer:

Explanation: lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common

NEW QUESTION 5
Install the Kernel Upgrade.
Install suitable kernel update from: http://server.domain11.example.com/pub/updates. Following requirements must be met:
Updated kernel used as the default kernel of system start-up.
The original kernel is still valid and can be guided when system starts up.

Answer:

Explanation: Using the browser open the URL in the question, download kernel file to root or home directory. uname –r// check the current kernel version
rpm –ivh kernel-*.rpm
vi /boot/grub.conf// check
Some questions are: Install and upgrade the kernel as required. To ensure that grub2 is the default item for startup.
Yum repo : http://content.example.com/rhel7.0/x86-64/errata
OR
uname -r // check kernel
Yum-config-manager
--add-repo=“http://content.example.com/rhel7.0/x86-64/ errata”
Yum clean all
Yum list kernel// install directly
Yum -y install kernel// stuck with it, do not pipe! Please do not pipe!
Default enable new kernel grub2-editenv list// check
Modify grub2-set-default “kernel full name”
Grub2-mkconfig –o/boot/grub2/grub.cfg// Refresh

NEW QUESTION 6
Copy /etc/fstab document to /var/TMP directory. According the following requirements to configure the permission of this document.
The owner of this document must be root.
This document belongs to root group.
User mary have read and write permissions for this document.
User alice have read and execute permissions for this document.
Create user named bob, set uid is 1000. Bob have read and write permissions for this document.
All users has read permission for this document in the system.

Answer:

Explanation: 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

NEW QUESTION 7
Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).

Answer:

Explanation: if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile
/etc/fstab:
/swapfile swap swap defaults 0 0 mount -a

NEW QUESTION 8
Configure your web services, download from http://instructor.example.com/pub/serverX.html And the services must be still running after system rebooting.

Answer:

Explanation:
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

NEW QUESTION 9
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.

Answer:

Explanation: # pvcreate /dev/sda7 /dev/sda8
# vgcreate -s 16M vg1 /dev/sda7 /dev/sda8
# lvcreate -l 50 -n lvm02
# mkfs.ext4 /dev/vg1/lvm02
# blkid /dev/vg1/lv1
# vim /etc/fstab
# mkdir -p /mnt/data
UUID=xxxxxxxx /mnt/data ext4 defaults 0 0
# vim /etc/fstab
# mount -a
# mount
(Verify)

NEW QUESTION 10
SELinux must be running in the Enforcing mode.

Answer:

Explanation: getenforce // Check the current mode of SELinux // SELinux runs in enforcing mode // Check
getenforce 1
getenforce
vim /etc/selinux/config selinux=enforcing // To temporarily enable SELinux
wg
sestatus

NEW QUESTION 11
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:

Explanation: # cd /home/
# mkdir admins /
# chown .admin admins/
# chmod 770 admins/
# chmod g+s admins/

NEW QUESTION 12
Configure a task: plan to run echo hello command at 14:23 every day.

Answer:

Explanation: # which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)

NEW QUESTION 13
Add a swap partition.
Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.

Answer:

Explanation: fdisk -cu /dev/vda// in the way of expanding the partition, don’t make main partition
partx –a /dev/vda
mkswap /dev/vdax
swapon /dev/vdax
swapon –s
vi /etc/fstab
/dev/vdaxswapswapdefaults0 0
mount -a

NEW QUESTION 14
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:

Explanation: Yum-config-manager
--add-repo=http://content.example.com/rhel7.0/x86-64/dvd” 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.

NEW QUESTION 15
Update the kernel from ftp://instructor.example.com/pub/updates. According the following requirements:
The updated kernel must exist as default kernel after rebooting the system.
The original kernel still exists and is available in the system.

Answer:

Explanation: rpm -ivh kernel-firm…
rpm -ivh kernel...

NEW QUESTION 16
Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.
Note: Partitions are seldom exactly the same size requested, so a size within the range of 260 MB to 320 MiB is acceptable.

Answer:

Explanation: df -hT
lvextend -L +100M /dev/vg0/vo
lvscan
xfs_growfs /home/ // home is LVM mounted directory
Note: This step is only need to do in our practice environment, you do not need to do in the real exam resize2fs /dev/vg0/vo // Use this comand to update in the real exam df -hT
OR
e2fsck -f/dev/vg0/vo
umount /home
resize2fs /dev/vg0/vo required partition capacity such as 100M lvreduce -l 100M /dev/vg0/vo mount
/dev/vg0/vo /home
df –Ht