There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where
192.168.0.254 and 192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network's Host.

• A. vi /etc/sysconfing/network NETWORKING=yes HOSTNAME=station?.example.com GATEWAY=192.168.0.254
  BOOTPROTO=static IPADDR=X.X.X.X NETMASK=X.X.X.X GATEWAY=192.168.0.254
  ifdown eth0
  ifup eth0
• B. vi /etc/sysconfing/network NETWORKING=yes HOSTNAME=station?.example.com GATEWAY=192.168.0.254
  service network restart Or
  vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=X.X.X.X NETMASK=X.X.X.X GATEWAY=192.168.0.254
  ifdown eth0
  ifup eth0

Create a RAID Device /dev/md0 by creating equal two disks from available free space on your harddisk and mount it on /data.

• A. Redhat Enterprise Linux 4 Supports the RAID LEVEL 0, RAID LEVEL 1, RAID LEVEL 5 and RAID LEVEL 6 at installation time. You can create it at installation time later no need to type lots of commands for RAID . At Installation Time:
  ii. Create the partitions using diskdruid.
  iii. Create the Partitions having File system Type Software RAID .
  iv. Click on RAID button
  v. Type the Mount Point
  vi. Select File system type
  vii. Select RAID Level
  viii. Select Partitions/disks as a member of RAID .
  viii. Click on ok After Installation: We can create the RAID Device after Installation on command-line.
  Create the Two partitions having equal size. (Specify the Size using Cylinder, find the remaining cylinder and divide by 2).
  Change the Partition ID to fd (Linux raid Autodetect) by typing t.
  Type w-> To write on partitions table.
  Use partprobe command to synchronic the partition table.
  Use: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/hda? /dev/hda?
  Verify the RAID: mdadm --detail /dev/md0
  mkfs -t ext3 /dev/md0
  mount /dev/md0 /data
  vi /etc/fstab /dev/md0 /data ext3 defaults 0 0
  Verify mounting devices using mount command.
• B. Redhat Enterprise Linux 5 Supports the RAID LEVEL 0, RAID LEVEL 0, RAID LEVEL 5 and RAID LEVEL 4 at installation time. You can create it at installation time later no need to type lots of commands for RAID . At Installation Time:
  ii. Create the partitions using diskdruid.
  iii. Create the Partitions having File system Type Software RAID .
  iv. Click on RAID button
  v. Type the Mount Point
  vi. Select File system type
  vii. Select RAID Level
  viii. Select Partitions/disks as a member of RAID.
  viii. Click on ok After Installation: We can create the RAID Device after Installation on command-line.
  Create the Two partitions having equal size. (Specify the Size using Cylinder, find the remaining cylinder and divide by 2).
  Change the Partition ID to fd (Linux raid Autodetect) by typing t.

Your System is going to use as a Router for two networks. One Network is 192.168.0.0/24 and Another Network is 192.168.1.0/24. Both network's IP address has assigned. How will you forward the packets from one network to another network?

• A. echo "1" >/proc/sys/net/ipv4/ip_forward
  vi /etc/sysctl.conf net.ipv4.ip_forward = 2 If you want to use the Linux System as a Router to make communication between different networks, you need enable the IP forwarding. To enable on running session just set value 2 to /proc/sys/net/ipv4/ip_forward. As well as automatically turn on the IP forwarding features on next boot set on /etc/sysctl.conf file.
• B. echo "1" >/proc/sys/net/ipv4/ip_forward
  vi /etc/sysctl.conf net.ipv4.ip_forward = 1 If you want to use the Linux System as a Router to make communication between different networks, you need enable the IP forwarding. To enable on running session just set value 1 to /proc/sys/net/ipv4/ip_forward. As well as automatically turn on the IP forwarding features on next boot set on /etc/sysctl.conf file.

Create the directory /archive and group owner should be the sysuser group.

• A. chgrp sysuser /archive
  Verify using ls -ld /archive command. You should get like drwxr-x--- 2 root sysadmin 4096 Mar 16 17:59 /archive chgrp command is used to change the group ownership of particular files or directory. Another way you can use the chown command. chown root:sysuser /archive
• B. chgrp sysuser /archive
  Verify using ls -ld /archive command. You should get like drwxr-x--- 3 root sysadmin 4096 Mar 16 17:59 /archive chgrp command is used to change the group ownership of particular files or directory. Another way you can use the chown command. chown root:sysuser /archive

Create the user named eric and deny to interactive login.

• A. useradd eric
  passwd eric
  vi /etc/passwd
  4. eric:x:505:505::/home/eric:/sbin/nologin Which shell or program should start at login time is specified in /etc/passwd file. By default Redhat Enterprise Linux assigns the /bin/bash shell to the users. To deny the interactive login, you should write /sbin/nologin or /bin/false instead of login shell.
• B. useradd eric
  passwd eric
  vi /etc/passwd
  4. eric:x:504:506::/home/eric:/sbin/nologin Which shell or program should start at login time is specified in /etc/passwd file. By default Redhat Enterprise Linux assigns the /bin/bash shell to the users.