CH 8 Review Questions

Which of the following are levels of backups that can be made with the dump command? (Choose all that apply.)

0 5

In the following command, what is the purpose of -o? find . "( " -name a.out -o -name core ")"

It is the "OR" operator

You've opened your mail on the company's server by using the mail command. Several messages are listed. How can you tell which ones are new or unopened messages?

New or unopened messages begin with an N or a U

When you create a section name in a man page, such as the DESCRIPTION section, what tag should you use just before the section name?

SH

Your network has a combination of Linux and Microsoft Windows computers.There is a Windows server that offers shared files for clients to access.Which of the following enables you to access the shared files from your Linux computer?

Samba

What is the purpose of the top command and how can you use it to stop a process?

The top command enables the user to monitor CPU-intensive tasks. A process/task can be stopped when you enter the k command and provide the PID.

How can you specify which device to use for a restore from a backup tape created by the dump command?

Use the -f option

Which of the following can you restore from a backup tape made via the dump command? (Choose all that apply.)

a file a partition of directories and files a directory a subdirectory

Name some files that should be modified for security when using NFS. (Choose all that apply).

a. /etc/exports b. /etc/hosts.allow c. /etc/hosts.deny

Name types of information that you can obtain using netstat.(Choose all that apply)

a. Network protocol communications b. Network connections established by the host computer c. Network routing information d. Information about computers remotely logged onto the host computer e. Data and communications errors

Your company is launching a marketing campaign, and to start, you've created a file called promotion in normal uppercase and lowercase letters that will be used to place text for ads on the Internet and in newspapers.When you show the promotional text to your boss, she is curious about how it would look in all uppercase letters for emphasis.Which of the following commands enables you to convert the text and save the result to the file, promotion_uppercase?

dd if=promotion of=promotion_uppercase conv=ucase

You've obtained over a hundred large graphics files to use in publications, but you want to be sure there is enough available disk space on your computer to store these files.Which of the following commands should you use?

df

You are gathering information about the amount of disk space occupied by users' home directories.

du

You are working on a report about disk usage on your company's server to help determine if it is time to purchase additional disks.Which of the following commands enables you to obtain disk usage statistics for your report?

du -h | more

You've purchased a new program for your computer, but the computer seems to slow down when you run the program.Which of the following commands enables you to monitor the memory usage as you run the program so you can determine if the program is a memory hog?

free

Your colleague is creating a new man page to document a manufacturing process used by your company. She wants to be able to quickly view the man page as she works on it so that she can have other people view it before copying the man page into production.Which of the following commands enables her and others to periodically review her work in a format similar to the man page format?

groff

A user on your network has received an error message that there is another computer on the same network using the same IP address, so the user cannot access the network.You send out a message to the 18 Linux users on your network to ask that they check the IP addresses on their computers and e-mail this information to you, so that you can determine who has the duplicate IP address.What utility do you tell users to run to determine their IP addresses?

ifconfig

Which of the following commands enables you to stop the process mentioned in Question 18?

kill

You suspect that your computer's connection to the network is not working because you don't seem to be able to connect to the Internet through the network.Which of the following commands can help you determine if your connection is working? (Choose all that apply.)

ping

You are setting up NFS to share files on the network from your Fedora Linux computer.Which of the following is a service that must be running to enable you to use NFS for sharing files?

portmap

Your computer is slowing down because you've started a process that is taking most of the memory and CPU resources.Which of the following commands enables you to find the process id so you can stop that process?

ps

What is the command that you can use (from root) to start the service mentioned in Question 14?

service

You have a small network in your business with just a few network devices connected along with 22 Linux computers and you want to see how efficiently your network is designed.Which of the following commands can you use from different computers to determine the route information takes from one computer to another?

traceroute

You help manage the Linux server for your department. Right now the server has no protection against power failures and there have been several power failures recently.To help make your case for a power protection device, you want to keep track of the amount of time the server has been running since the last power outage that caused it to go down.What command enables you to track how long the server has been up?

uptime

You have obtained a new utility, called watchit, to monitor security on your computer, and you decide to run the utility in the background. Normally, to start the utility you would enter watchit at the command line. Which of the following commands enables you to start and run this utility in the background?

watchit&