The <span> file that is used to determine which tty devices the root user is allowed to log in to is: </span><span>/etc/<span>securetty
</span></span>etc/securetty<span> is consulted by pam_securetty module in order to decide from which virtual terminals root is allowed to login from. You can limit the access to root account by </span>disabling root logins at the console by editing the /etc/securetty<span> file. </span>
Answer: Most of the time its caused by a virus and the virus takes the chance when your computer resets so look for a virus if that's not it maybe its power failure check if its in a window folder or just use a antivirus.
Explanation:
Answer:
First, you need to start the OSPF process by executing the command:
<em>Router (config)# router ospf {process-ID#}</em>
Then, you have to instruct the router to advertise the networks that are directly linked to it by entering this network command with the area ID number for that network:
Router (config-router)# network {192.168.10.0} {255.255.255.0} area {0}
Line graphs can also be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. Bar graphs are used to compare things between different groups or to track changes over time.
