Self Test | Linux Patch Management: Keeping Linux Systems Up To Date

The following questions will help you measure your understanding of the material presented in this chapter. As no multiple choice questions appear on the Red Hat exams, no multiple choice questions appear in this book. These questions exclusively test your understanding of the chapter. Getting results, not memorizing trivia, is what counts on the Red Hat exams. There may be more than one answer to many of these questions.

Hardware Compatibility

In what file can you find more information associated with your CPU?

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Answers

1.	The file most closely associated with information on the CPU is /proc/cpuinfo. Less information on the CPU is available from other files, such as /var/log/dmesg.

CPU and RAM

Name three different architectures on which you can install RHEL 5.

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Answers

2.	There are versions of RHEL 5 available for at least six different architectures (depending on interpretations): i386, x86_64 (AMD Athlon and AMD64), ia64, IBM zSeries, IBM pSeries, and IBM iSeries.

Hotswap Buses

What command lists all PCI devices connected to your system?

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Answers

3.	The lspci command lists all PCI devices connected to your system. If you want more information, you can run lspci -v or even lspci -vv.

Configuring a Network Installation

Name three network servers that you use to serve Red Hat Enterprise Linux installation files.

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If you're unsure on how to customize a firewall, what can you run from the command line to eliminate all current firewall rules?

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Answers

4.	Three network servers that you can use to serve Red Hat Enterprise Linux installation files are FTP, HTTP, and NFS.
5.	If you're unsure how to customize a firewall, the simplest way to flush out the rules is with the iptables -F command.

The First Installation Steps

If you need to check the integrity of the installation CDs in a purchased Red Hat boxed set, what command should you run from the boot: prompt when starting the installation process?

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Answers

6.	The linux mediacheck command at the boot: prompt adds a step to the installation process that allows you to check the integrity of installation CDs.

Configuring Partitions, RAID, and LVM

Which device file is associated with the fourth logical partition on the second SATA drive?

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To configure a RAID 6 array, what is the minimum number of partitions you need?

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Answers

7.	The device file associated with the fourth logical partition on the second SATA drive is /dev/ sdb8. The first logical partition is /dev/sda5.
8.	To configure a RAID 6 array, you need at least four RAID partitions.

Post-partition Installation Steps

List three names for package groups associated with servers.

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Answers

The names of package groups within the Server group that install servers are DNS Name Server, FTP Server, Legacy Network Server, Mail Server, MySQL Database, Network Servers, News Server, PostgreSQL Database, Printing Support, Web Server, and Windows File Server. While there's no requirement to memorize these names, if you've installed RHEL a few times, you should be quite familiar with at least the names of a few of these groups.

Post-installation, Security, and the First Boot Process

10.

You've just installed RHEL 5 and have just rebooted your system. Why might you not see the GUI First Boot process?

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Answers

10.

If you don't see the GUI First Boot process after RHEL reboots for the first time, you probably haven't installed the GUI. (It's also possible that you have a configuration problem, such as a full partition associated with /home, that prevents the GUI from booting normally.)

Installation Validation

11.

If you want access to a command line during the installation process, what keys would you press?

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12.

If you suspect a networking problem freezing the installation process, what console can you access to confirm?

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Answers

11.	If you want access to a command line during the installation process, press ALT-F2 (or if you're installing via the GUI, press CTRL-ALT-F2).
12.	If you want to see any error messages associated with access to a network installation server during the installation process, press ALT-F3 (or if you're installing via the GUI, press CTRL-ALT-F3).