Question 1

If a Linux system uses hardware RAID level ____, and a hard drive fails, the data on the hard disk can be regenerated using the configuration utility for the RAID controller.&#10;A)0 or 5&#10;B)1 or 4&#10;C)0 or 2&#10;D)1 or 5

Accepted Answer

RAID levels 1 and 5 both provide redundancy. RAID 1 mirrors data across drives, while RAID 5 uses parity, allowing data to be regenerated if a drive fails.

Question 2

By default, sar commands are scheduled using the cron daemon to run every ____ minutes in Red Hat Fedora Linux.&#10;A)2&#10;B)5&#10;C)10&#10;D)30

Accepted Answer

By default, sar commands are scheduled using the cron daemon to run every 10 minutes in Red Hat Fedora Linux.

Question 3

The ____ option for the sar command is used to display swap statistics.&#10;A)-B&#10;B)-b&#10;C)-s&#10;D)-q

Accepted Answer

The -B option is used to display the swap statistics in the sar command.

Question 4

Almost all hardware problems are the result of damaged hardware.

Accepted Answer

While damaged hardware can cause problems, many hardware issues also stem from software conflicts, driver issues, firmware updates, overheating, and other non-damage related causes.

Question 5

When compiling a kernel, if the source code has been compiled previously, you can optionally use the ____ command to remove any files created by previous kernel compilations.&#10;A)make proper&#10;B)make mproper&#10;C)make mrpr&#10;D)make mrproper

Accepted Answer

The correct command to remove any files created by previous kernel compilations is "make mrproper". The other options are not valid commands for this purpose.

Question 6

The ____ command can be used to create a boot disk after installation.&#10;A)mkboot&#10;B)mkbootdisk&#10;C)bootdisk&#10;D)mkbd

Accepted Answer

The mkbootdisk command is used to create a boot disk after installation.

Question 7

To see a list of modules that have been inserted into the Linux kernel, you can use the ____ command.&#10;A)insmod&#10;B)lsmod&#10;C)modprobe&#10;D)listmod

Accepted Answer

The "lsmod" command lists all currently loaded modules in the Linux kernel. "insmod" is used to insert a new module into the kernel, "modprobe" is used to add or remove a module and its dependencies, and "listmod" is not a valid command in Linux.

Question 8

The ____ keyword used with the setserial utility sets the speed of a serial port to 56KB/s.&#10;A)spd_vhi&#10;B)spd&#10;C)spd_hi&#10;D)spd_normal

Accepted Answer

The answer of The ____ keyword used with the setserial...

Question 9

Performance problems can only be caused by hardware.

Accepted Answer

Performance problems can also be caused by software issues such as conflicts, bugs, or poor optimization. Network issues such as bandwidth limitations can also cause performance problems.

Question 10

Performing regular system backups and identifying potential problem areas are examples of reactive maintenance.

Accepted Answer

Performing regular system backups and identifying potential problem areas are examples of proactive maintenance, not reactive maintenance. Reactive maintenance is fixing something that has already malfunctioned or failed.

Question 11

When applications run into difficulties gaining resources during execution and stop functioning, restarting the process using a(n)____ often solves this problem.&#10;A)SIGINT&#10;B)SIGQUIT&#10;C)SIGTERM&#10;D)SIGHUP

Accepted Answer

The answer of When applications run into difficulties gaining resources...

Question 12

If the / filesystem becomes corrupted, the system is unstable and must be turned off.

Accepted Answer

The answer of If the / filesystem becomes corrupted, the...

Question 13

Many Linux problems are posted on Web sites or newsgroups.

Accepted Answer

The answer of Many Linux problems are posted on Web...

Question 14

Modules are typically stored in subdirectories of the ____ directory.&#10;A)/lib/modules/&#10;B)/var/modules/&#10;C)/lib/&#10;D)/lib/modules/

Accepted Answer

The answer of Modules are typically stored in subdirectories of...

Question 15

The shell restricts the number of filehandles that programs can open to ____ by default.&#10;A)256&#10;B)512&#10;C)1024&#10;D)2048

Accepted Answer

The answer of The shell restricts the number of filehandles...

Question 16

The ____ option for the sar command is used to displays statistics for the processor queue.&#10;A)-r&#10;B)-c&#10;C)-q&#10;D)-v

Accepted Answer

The answer of The ____ option for the sar command...

Question 17

All Linux problems can be divided into ____ categories.&#10;A)2&#10;B)3&#10;C)4&#10;D)5

Accepted Answer

The answer of All Linux problems can be divided into...

Question 18

To identify any missing files in a package or package dependency, you can use the ____ option to the rpm command, followed by the name of the package.&#10;A)-v&#10;B)-m&#10;C)-V&#10;D)-M

Accepted Answer

The answer of To identify any missing files in a...

Question 19

To remove a module from the kernel, you can use the ____ command.&#10;A)rmmod&#10;B)modprobe&#10;C)remmod&#10;D)delmod

Accepted Answer

The answer of To remove a module from the kernel,...

Question 20

____ are the most common hardware component to fail on Linux systems.&#10;A)Floppy drives&#10;B)Hard disks&#10;C)NICs&#10;D)Video cards

Accepted Answer

The answer of ____ are the most common hardware component...

Question 21

Viewing the output of the ____________________ command or the contents of the /var/log/boot.log and /var/log/messages log files can isolate the devices with conflicting parameters.

Accepted Answer

The answer of Viewing the output of the ____________________ command...

Question 22

Match between columns&#10;                        Premises: The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file that contains the location of shared library files.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The file used to load and alias modules at system initialization.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;The measures taken to reduce future system problems.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;A file that contains the rules to compress or decompress multimedia information.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;The file that contains a list of directories that contain shared libraries.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;A program used to detect and install support for new hardware.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The measures taken when system problems arise.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that typically contains source code for the Linux kernel during compilation.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.&#10;The directory that contains most system log files.

Accepted Answer

The Answer of /etc/modprobe.conf and codec and proactive maintenance and is...

Question 23

When performance issues arise, you can compare the output of performance utilities to the ____________________ values found in the system log book.

Accepted Answer

The answer of When performance issues arise, you can compare...

Question 24

When should you patch a kernel? How is this accomplished?

Accepted Answer

The answer of When should you patch a kernel? How...

Question 25

What are the two golden rules that should guide you during any troubleshooting process? Describe each rule.

Accepted Answer

The answer of What are the two golden rules that...

Question 26

When compiling a kernel, the ____ command provides a text-based interface that prompts the user for information regarding kernel configuration in a question-by-question format.&#10;A)make xconfig&#10;B)make config&#10;C)make menuconfig&#10;D)make gconfig

Accepted Answer

The answer of When compiling a kernel, the ____ command...

Question 27

How should the problems of IRQ conflicts, I/O address conflicts, and missing device drivers be addressed?

Accepted Answer

The answer of How should the problems of IRQ conflicts,...

Question 28

How is the mpstat utility used? What information does it provide, and how can that information be interpreted?

Accepted Answer

The answer of How is the mpstat utility used? What...

Question 29

How can you identify filesystem corruption? How should you troubleshoot filesystem corruption on a non-critical partition?

Accepted Answer

The answer of How can you identify filesystem corruption? How...

Question 30

Some peripheral devices can perform a great deal of processing that is normally performed by the CPU; this is known as ____________________.

Accepted Answer

The answer of Some peripheral devices can perform a great...

Question 31

Processes can initiate numerous connections, called ____________________, to files on the filesystem in addition to Standard Input, Standard Output, and Standard Error.

Accepted Answer

The answer of Processes can initiate numerous connections, called ____________________,...

Question 32

The ____________________ command checks to ensure that any prerequisite modules have been loaded first and loads them if needed before loading the specified module.

Accepted Answer

The answer of The ____________________ command checks to ensure that...

Deck 13: Troubleshooting and Performance