Intro to System Admin Exam 2, Complete Verified
Solution 2023
1. Creating an archive with the tar command.
tar -cf files.tar file1 file2
2. To get help with the tar command, type?
tar --help
3. A tar volume header is?
digital label used to describe the file
4. The default standard output is?
default standard output is the screen.
5. The most common backup medium is?
tape
6. Unpacking the members of an archive is known as?
extraction
7. The tar utility was designed to store files where?
magnetic tape
8. Which advanced tar option does not have a short name?
--delete
9. Which cpio utility mode copies files from one directory to another?
copy-pass mode
10. Which cpio utility mode extracts files from an archive?
copy-in mode
11. In Linux, the default standard input is the?
keyboard
12. Which symbol is used to redirect input from the keyboard?
less than - <
13. Which output redirection operator is used to redirect a command's output to a
file?
greater than - >
14. Which output redirection operator is used to make one command's output the
standard input of another command?
pipe - |
15. What is the result of the ls > home command?
writes the ls output to the home file
16. How many gigabytes (GB) of data does the standard DVD hold?
4.7 GB
17. Which Linux utility is used to compress files?
gzip
18. How much a file is reduced after compressing it is known as?
compression ratio
19. According to the man page for the gzip utility, text files are typically reduced
by ____ with compression.
60 - 70%
, 20. To see a compression ratio for any file, you can use the ____ option with the
gzip utility.
-v -verbose: Verbose. Display the name and percentage reduction for each file
compressed or decompressed.
-l -list: For each compressed file, list the following fields, compressed size,
uncompressed size, ratio, uncompressed name
21. How to un-compress a file compressed with the gzip utility?
gzip -d
22. What extension does the bzip2 utility compresses files add to the filename?
.bz2
23. The cron table has ____ fields.
6 ( six )
24. Which command is used to create, delete, and list cron tables?
vim /etc/crontab
25. Who can edit the system cron table.
root
26. A(n) ____ copies files and directories to an archive you can use to restore
data in case of a system failure or data loss and corruption.
system backup
27. A(n) ____ is a file containing many other files, each of which is still identified
by its filename, owner, permissions, timestamp, and so forth.
archive
28. The archive file's contents are called?
members
29. An archive of all files on the file system is called what?
full backup (level 0)
30. An archive containing only files modified since the last backup is called what?
incremental backup
31. Why should you have a system backup plan in place?
in the event of a system failure
32. Who determines which files and directories are essential to back up and what
is the concern with the /proc directory?
the system admin (You)
33. Where should you store an archive if the members of the tar archive are the
files in your home directory?
save the tar file to a disk or move it to another location, such as a network drive
34. When is a snapshot file created and, what does it contain?
when an archive already exists, and you want to update the archive
it contains the changes from the previous archive
35. What commands does the copy in/out (cpio) utility use to generate files to be
archived and, what are the three modes of operation?
ls or find command || copy[-in, -out, -pass]
36. Describe compression.
using an algorithm to make a file smaller
37. When should you run backups?
Solution 2023
1. Creating an archive with the tar command.
tar -cf files.tar file1 file2
2. To get help with the tar command, type?
tar --help
3. A tar volume header is?
digital label used to describe the file
4. The default standard output is?
default standard output is the screen.
5. The most common backup medium is?
tape
6. Unpacking the members of an archive is known as?
extraction
7. The tar utility was designed to store files where?
magnetic tape
8. Which advanced tar option does not have a short name?
--delete
9. Which cpio utility mode copies files from one directory to another?
copy-pass mode
10. Which cpio utility mode extracts files from an archive?
copy-in mode
11. In Linux, the default standard input is the?
keyboard
12. Which symbol is used to redirect input from the keyboard?
less than - <
13. Which output redirection operator is used to redirect a command's output to a
file?
greater than - >
14. Which output redirection operator is used to make one command's output the
standard input of another command?
pipe - |
15. What is the result of the ls > home command?
writes the ls output to the home file
16. How many gigabytes (GB) of data does the standard DVD hold?
4.7 GB
17. Which Linux utility is used to compress files?
gzip
18. How much a file is reduced after compressing it is known as?
compression ratio
19. According to the man page for the gzip utility, text files are typically reduced
by ____ with compression.
60 - 70%
, 20. To see a compression ratio for any file, you can use the ____ option with the
gzip utility.
-v -verbose: Verbose. Display the name and percentage reduction for each file
compressed or decompressed.
-l -list: For each compressed file, list the following fields, compressed size,
uncompressed size, ratio, uncompressed name
21. How to un-compress a file compressed with the gzip utility?
gzip -d
22. What extension does the bzip2 utility compresses files add to the filename?
.bz2
23. The cron table has ____ fields.
6 ( six )
24. Which command is used to create, delete, and list cron tables?
vim /etc/crontab
25. Who can edit the system cron table.
root
26. A(n) ____ copies files and directories to an archive you can use to restore
data in case of a system failure or data loss and corruption.
system backup
27. A(n) ____ is a file containing many other files, each of which is still identified
by its filename, owner, permissions, timestamp, and so forth.
archive
28. The archive file's contents are called?
members
29. An archive of all files on the file system is called what?
full backup (level 0)
30. An archive containing only files modified since the last backup is called what?
incremental backup
31. Why should you have a system backup plan in place?
in the event of a system failure
32. Who determines which files and directories are essential to back up and what
is the concern with the /proc directory?
the system admin (You)
33. Where should you store an archive if the members of the tar archive are the
files in your home directory?
save the tar file to a disk or move it to another location, such as a network drive
34. When is a snapshot file created and, what does it contain?
when an archive already exists, and you want to update the archive
it contains the changes from the previous archive
35. What commands does the copy in/out (cpio) utility use to generate files to be
archived and, what are the three modes of operation?
ls or find command || copy[-in, -out, -pass]
36. Describe compression.
using an algorithm to make a file smaller
37. When should you run backups?
