Deck 20: Advanced Linux Administration

Question 1

The latest release of Linux kernel 3.3 contains more than 15 million lines of source code.

Answer 1

True

Question 2

A Linux system administrator should continuously monitor a system's performance.

Answer 2

False

Question 3

A context switch occurs when the CPU suspends its current execution, saves the current work status, and transfers control to an interrupt handler.

Answer 3

False

Question 4

A high number of active pages indicates a shortage of physical memory in a system.

Question 5

You need to be logged on as the root user to issue the ksysguard command.

Question 6

Program execution takes place in ____ mode.

A) kernel
B) user
C) safe
D) run

Question 7

To display the kernel version you're running, use the ____ command.

A) dis -k
B) dis v
C) uname -k
D) uname -r

Question 8

The ____ command gives you an active view of a running system and can display system summary information, such as CPU use, swap space use, and load averages.

A) vmstat
B) du
C) top
D) df

Question 9

The ____ command displays virtual memory statistics and information about processes, CPU activity, and disk space use.

A) vmstat
B) du
C) top
D) df

Question 10

The ____ command shows in column format the total amount of free, physical, and swap memory in the system as well as buffers used by the kernel.

A) vmstat
B) free
C) top
D) df

Question 11

The ____ command displays the amount of available disk space on the file system.

A) vmstat
B) free
C) top
D) df

Question 12

The ____ command shows disk use information for all files in a specified directory and its subdirectories.

A) du
B) free
C) top
D) df

Question 13

Which iostat command displays a single report for all CPUs and devices?

A) iostat -c
B) iostat -k
C) iostat
D) iostat -m

Question 14

Which iostat command displays a continuous device report at four-second intervals?

A) iostat -c 4
B) iostat -4d
C) iostat -4
D) iostat -d 4

Question 15

The ____ command is used to display information for each processor, starting with processor0.

A) mpstat
B) iostat
C) pstat
D) vmstat

Question 16

You use the ____ command to tune an IDE hard drive.

A) mke2fs
B) hdparm
C) tune2fs
D) e2fsck

Question 17

The ____ command is used to create a Linux ext2, ext3, or ext4 file system on a specified device, which is usually a hard drive partition.

A) mke2fs
B) hdparm
C) tune2fs
D) e2fsck

Question 18

You use the ____ command to tune file system parameters on a Linux ext2, ext3, or ext4 file system.

A) mke2fs
B) hdparm
C) tune2fs
D) e2fsck

Question 19

You use the ____ command to check an ext2, ext3, or ext4 file system for bad data blocks.

A) badblocks
B) hdparm
C) tune2fs
D) e2fsck

Question 20

The ____ command is used to check a device for bad data blocks.

A) badblocks
B) hdparm
C) tune2fs
D) e2fsck

Question 21

____ is a POSIX utility that can read and write a wide variety of archive formats.

A) KDEBK
B) GRUB
C) Ark
D) Pax

Question 22

What does the pax -f testfiles command do?

A) It lists the contents of an archive named testfiles.
B) It extracts the contents of the archive named testfiles.
C) It archives the file named testfiles.
D) It deletes an archived file named testfiles.

Question 23

The KDE archiving tool is ____.

A) KDEBK
B) GRUB
C) Ark
D) Pax

Question 24

To boot your computer into single-user mode, use the ____ command.

A) yast2 backup
B) rescue -mode=1
C) ark -1
D) init1

Question 25

In Linux ____ mode, you can boot a small Linux environment from some type of medium, such as a CD-ROM.

A) safe
B) rescue
C) single user
D) restore

Question 26

You can use the ____ command to fix problems in the file system.

A) fdisk
B) traceroute
C) ping
D) tune2fs

Question 27

The ____________________, the central module of the Linux OS, performs two main tasks: acting as an interface to hardware attached to the computer and managing communication between processes.

Question 28

____________________ is the process of observing portions of a system for problems or anomalies.

Question 29

A(n) ____________________ is a special routine containing instructions for handling interrupts.

Question 30

____________________ mode, also known as maintenance mode, is an OS mode in which only the root partition is active and mounted, and Linux runs in runlevel 1.

Question 31

The ____________________ is a small program stored on the Master Boot Record (MBR) that can load one or more OSs by reading file system information through a pointer from the disk partition containing OS files.

Question 32

Match each statement with an item

-These statistics are used to determine network bandwidth utilization and help indicate excessive collisions in a network connection.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 33

Match each statement with an item

-Specifies the maximum number of I/O operations that a hard drive can perform per second.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 34

Match each statement with an item

-Specifies the maximum time for a sector on a disk platter to arrive under a disk head for writing.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 35

Match each statement with an item

-Specifies when the CPU stops the currently running process and starts a new process.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 36

Match each statement with an item

-Specifies the time hard disk heads take to reach their position on the track to perform read and write operations.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 37

Match each statement with an item

-Specifies the maximum number of I/O operations that a network connection can perform per second.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 38

Match each statement with an item

-Specifies statistics such as maximum number of files in a directory and average file size.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 39

Match each statement with an item

-Specifies the percentage of time a user-level or a system-level process spends on a CPU.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 40

Match each statement with an item

-Specifies the amount of available space on a disk device.

A) Context switching
B) Load percentage
C) Number of bytes received or sent
D) Data transfer speed
E) Free space
F) Data transfer speed.
G) File system-based information
H) Seek time
I) Latency

Question 41

When would an administrator compile or reconfigure the kernel?

Question 42

Describe how the Linux version numbering scheme changed with Linux 2.6.x.

Question 43

Describe the two types of Linux kernels.

Question 44

Explain how an administrator can see a detailed display of the kernel's version number.

Question 45

What is the logrotate utility and how is it used?

Question 46

What is considered to be the best practice for file block size allocation?

Question 47

What are configuration notes and why are they important?

Question 48

What is the Grand Unified Boot Loader (GRUB)?

Question 49

What is the purpose of the ping command and what does the command test?

Question 50

Explain how the traceroute command works.