Deck 11: Compression, System Backup, and Software Installation

Question 1

When used with the uncompress command, the ____ option displays the contents of the compressed file to Standard Output.

A) -c
B) -v
C) -f
D) -r

Answer 1

A

Question 2

When using the gzip utility, the -1 option is also known as best compression and results in a higher compression ratio.

Answer 2

False

Question 3

Because its primary use is to back up files in case of system failure, cpio uses absolute pathnames by default when archiving. _________________________

Answer 3

True

Question 4

The tar utility cannot back up device files or files with filenames longer than 255 characters.

Question 5

The filename extension given to files compressed with bzip2 is ____.

A) .bz
B) .bz2
C) .gz
D) .Z

Question 6

The compression algorithm used by the compress utility has an average compression ratio of ____%.

A) 30-40
B) 40-50
C) 50-60
D) 60-70

Question 7

The compress utility preserves the original ownership, modification, and access time for each file that it compresses.

Question 8

It is good form to read the Makefile after you run the configure script.

Question 9

The ____ option, when used with the gzip command, causes the compression ratio for files that have been compressed to be listed.

A) -c
B) -f
C) -r
D) -l

Question 10

When creating a system backup, temporary files in the /tmp and /var/tmp directories should be included.

Question 11

When using the compress utility, each file is renamed with a(n) ____ filename extension to indicate that it is compressed.

A) .c
B) .cmp
C) .cpz
D) .Z

Question 12

The average compression ratio for gzip is ____%.

A) 40-50
B) 50-60
C) 60-70
D) 70-80

Question 13

If no level of compression is specified, the gzip command assumes the number ____.

A) 4
B) 5
C) 6
D) 7

Question 14

If a compression utility compresses a file to 52% of its original size, it has a compression ratio of 52%. _________________________

Question 15

When used with the tar utility, the ____ option causes filenames to be stored in an archive using absolute pathnames.

A) -a
B) -b
C) -p
D) -n

Question 16

The ____ command can be used to display the contents of a compressed file.

A) acat
B) zcat
C) cat
D) ccat

Question 17

When used with the compress command, the ____ option can be used to compress symbolic links.

A) -f
B) -c
C) -v
D) -r

Question 18

To decompress files that have been compressed with the compress utility, you can use the decompress command followed by the names of the files to be decompressed. _________________________

Question 19

The dump/restore utility can only work with files on ext2 and ext3 filesystems. _________________________

Question 20

Traditionally, CDs/DVDs were used to back up data. _________________________

Question 21

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Archiving all data on a filesystem.

Question 22

Packages in the Red Hat Package Manager format have filenames that indicate the hardware architecture for which the software was compiled, and end with the ____________________ extension.

Question 23

To view the contents of a file that was compressed with the bzip2 utility, you must use the ____________________ command.

Question 24

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Filenames that end with the .tar.gz or .tgz extensions, and represent gzip-compressed tar archives.

Question 25

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Standard set of instructions used to compress a file.

Question 26

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
The rate of compression.

Question 27

You can perform up to ____ different incremental backups using the dump/restore utility.

A) seven
B) eight
C) nine
D) ten

Question 28

The ____ option can be used with the tar command to extract a specified archive.

A) -s
B) -e
C) -x
D) -a

Question 29

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Back-up copies of files and directories.

Question 30

A(n) ____________________ backup backs up only the data that has been changed since the last backup.

Question 31

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Command that can be used to copy files to the appropriate location on the filesystem

Question 32

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Command that can be used to ensure that a file was received in its entirety after you download it.

Question 33

____________________ is used to reduce the size of a file or set of files.

Question 34

The ____________________ utility uses the Burrows-Wheeler Block Sorting Huffman Coding algorithm when compressing files.

Question 35

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Burning software that comes with Red Hat Fedora Core 2.

Question 36

To remove a package from the system, you can use the ____ option to the rpm command.

A) -d
B) -e
C) -r
D) -x

Question 37

When using the cpio utility, the ____ option causes a new archive to be created.

A) -n
B) -c
C) -o
D) -a

Question 38

The ____ command looks for a Makefile and uses the information within to compile the source code into binary programs using the appropriate compiler program for the local hardware architecture.

A) configure
B) install
C) make install
D) make

Question 39

Most Linux distributions today use ____ as their package manager.

A) RPM
B) PRM
C) MPR
D) RMP

Question 40

Match each term with the correct statement below.
a.full backup
f.Brasero Disc Burner
b.make install
g.compression algorithm
c.checksum
h.sum
d.tarball
i.archive
e.compression ratio
Values that are calculated using a MD5 algorithm, a SHA-1 algorithm, or a SHA-256 algorithm.

Question 41

When backing up a system, what type of files should be archived, and what types should not?

Question 42

Describe the basic steps involved in compiling source code into a program.

Question 43

Describe the difference between full and incremental backups. Explain how both might be used to implement a back-up strategy, mentioning how the dump/restore utility can assist in this implementation. Provide an example.

Question 44

Give a short description of the gzip utility. What compression algorithm does it use, and what degree of compression is it typically able to achieve? What are some similarities and differences from the compress utility?

Question 45

What types of media are commonly used for archives? What type of media is most commonly used for archiving on Linux systems?