Open Source Software
 Скачать 1.28 Mb.
|
Users and Groups1.Question 1 Basic information about the characteristics of a user's account can be found in: /etc/passwd 2.Question 2 Adding a new user to a group is done with: usermod 3.Question 3 Which provides stronger security and auditing for system activity: sudo 4.Question 4 Differences between su and su - include (Select all answers that apply): su preserves more information, such as current directory, path and environment variables su - starts a new login shell, while su just continues the current shell, but gives it super privileges 5.Question 5 Which is the proper way to use sudo with echo? sudo bash -c "echo 3 > /proc/sys/vm/drop_caches" Linux base from test samples and test samples 2 A command that will continuously update statistics about running processes: a. bottom b. tall c. top d. head 2. A computer running Linux can: a. Function as a web server b. Outperform proprietary systems at certain tasks c. Serve a government agency d. All of the above e. Be used to create new programs 3. A conditional that lets you make multiple comparisons with is called: a. fanout b. test c. case. d. branch e. if 4. A division of a hard drive may be referred to as a __. a. partition b. block c. label d. portion 5. A file begins with _#!/BIN/CSH __._ This means. a. This is a Perl script b. Running the script will invoke /bin/csh to interpret the rest on the file c. C Shell compatibility mode is enabled d. The operator should not be using /bin/csh e. Nothing, this is a comment 6. A long software release cycle is: a. Only offered by Red Hat and SUSE b. Better because old hardware can be utilized is service file c. Makes programming more difficult since new feature cannont be used d. Valued by businesses that want stability e. Characterized by infrequent security fixes 7. A Mail Transfer Agent’s primary purpose is to: a. Manage the end user’s inbox b. Serve email to end clients c. Deliver mail between servers d. Act as a gateway between faxes and email e. Filter out spam 8. A maintenance cycle: a. Should be long so that you have time before you need to upgrade b. Only has meaning for paid software c. Describes how long a version of software will be supported d. Describes how often updates for software come out e. Should be short so you always have freshest releases 9. A pipe allows you to… a. … type multiple commands at one prompt. b. … send the output of one command to another. c. … send the output of a command to a file. d. … send the same input to multiple commands. 10. A service is… a. … another name for a computer’s hostname. b. … like in IP address. c. … a feature provided by one computer to another. d. … a file that contains configuration information. 11. A software release cycle describes: a. How often the computer must be rebooted b. How often the computer must be upgraded to support new software c. How often security fixes are implemented d. How often the software’s memory is released back to the operating system e. How often upgrades come out for software 12. A special program that gathers all of the source code files and generates instructions that can be run on the computer a. Application b. Software c. Compiler d. Source code 13. A user can belong to… a. At least 16 groups b. Only five groups c. Only groups with a GID over 500 d. Only one group 14. Brackets cannont be used to a represent a range of a characters a. False. b. True 15. Bundling utilities, management tools, and application software with a Linux kernel is called a: a. A trademark b. A text editor c. A type of hardware d. A distribution of Linux 16. By default, the zip command replaces uncompressed files with compressed files a. True b. False 17. Channel 2 is a. STDIN b. STDALLL c. STDERR d. STDOUT 18. Cloud computing is: a. Allows users in different geographical region to work together in real time b. All the correct c. Requires fewer resources because systems are shared among many users d. Is useful for both business and home users e. Is made possible by faster internet speeds 19. Compression of a file works be: a. Eliminating gaps within the file b. Removing redundant information c. Consolidating multiple files into one d. Removing the high order bit from each byte 20. Embedded Systems means: a. You can view the software’s source code b. Business cannot charge anything for the software, only the hardware c. Users must support the systems themselves d. Companies must share their changes e. Systems designed to do a specific task on hardware optimized for only one purpose 21. Which log file messages regarding authentication and authorization? a. secure b. syslog c. dmesg d. messages 22. Which of the following are common busing systems? a. USB b. BIOS c. RAM d. CPU 23. Which of the following are true about compiled programming languages? a. Ruby is a compiled language b. A programming is usually more productive then using language c. Perl is a compiled language d. C is a compiled language e. Compiled languages are great for system administration tasks like scripting 24. Which of the following are valid CPU types for Intel-based platforms? ( a. 48-bit b. 52-bit c. 24-bit d. 32-bit 25. Which of the following are valid video cable connector types? a. AMD b. HDA c. VGA d. RAM 26. Which of the following commands can be used to compress a file? a. cat b. pwd c. bunzip2 d. gzip 27. Which of the following commands can be used to display socket statistics, and supports all major packet and socket types? a. ifconfig b. route c. ss d. top 28. Which of the following commands ca be used to modify a group? a. modgroup b. groupadd c. addgroup d. groupmod 29. Which of the following commands can be used to rename a file? a. rm b. name c. mv d. cp 30. Which of the following commands set “other” permissions on file to r-x? a. chmod o-r-w file b. chmod o=r+x file c. chmod 0+rx file d. chmod o=rx file 31. Which of the following commands sets “other” permissions on file to r-x? a. chmode 775 file b. chmode 776 file c. chmode 777 file d. chmod 774 file 32. Which of the following commands will add the group extra to the user bob’s secondary groups in addition to bob’s current secondary groups? a. usermode -ag bob extra b. usermode -a extra bob c. usermode -G extra bob d. usermode -aG extra bob 33. Which of the following commands will allow you to into a remote machine? a. netsat b. ssh c. route d. dig 34. Which of the following commands will allow you to log into the machine server1 with the account name nick? a. ssh nick->server1 b. ssh nick&server1 c. ssh nick@server1 d. ssh nick-server1 35. Which of the following commands will append its output to _OUTPUT.FILE_? a. output.file &It; echo Testing b. echo Testing -> output.file c. echo Testing > output.file d. echo Testing >> output.file 36. Which of the following commands will create a zipfile with the content of your Documents directory? a. zip -c mydocs.zip Documents b. zip -cf mydocs.zip Documents c. zip -r mydocs.zip Documents d. zip -f mydocs.zip Documents 37. Which of the following commands will direct error messages to the file, _ERROR.LOG_? a. Is /root>> error.log b. Is /root > error.log c. Is /root $> error.log d. Is /root 2> error.log 38. Which of the following commands will display CPU information? a. Ispic b. cpuinfo c. showcpu d. arch 39. Which of the following commands will display lines that contain either start or end? a. egrep start end file.txt b. egrep (start|end) file.txt c. egrep start&end file.txt d. egrep ‘start|end’ file.txt 40. Which of the following commands will display only lines that begin with _START_? a. grep ^start file.txt b. grep \start file.txt c. grep $start file.txt d. grep *start file.txt 41. Error messages generate by commands are sent where by default? a. STDOUT b. Log files c. STDIN d. STDERR 42. Error messages generate by commands are sent where by default? a. STDOUT b. Log files c. STDIN d. STDERR 43. Give a file called documents.zip, how can you see what’s in it without extracting the files? a. zip -If documents.zip b. unzip - - list documents.zip c. unzip -l documents.zip d. showzip documents.zip. 44. Given the following part a script: [What is the meaning of $1?] What is the meaning of $1? a. It is a list of files that gets interpolated b. It is the first argument passed to the script c. It is a parameter to -f, indicating the size of the file d. It is a special variable that indicates the exit code of the command before it e. It is a file called $1 45. Given the following part a script: [What is the meaning of $1?] What is the meaning of $1? a. It is a list of files that gets interpolated b. It is the first argument passed to the script c. It is a parameter to -f, indicating the size of the file d. It is a special variable that indicates the exit code of the command before it e. It is a file called $1 46. Given the following script that is run thought _./TEST.SH HELLO GOODBYE_:[When will “I am here” be printed?] When will “I am here” be printed? a. The script will always print “I am here” b. Never c. If there are two in the current directory d. If a file called “hello” exists in the current directory e. If a file called “goodbye” exists un the current directory 47. How called the command which display manual page? a. less b. vim c. ls d. nano e. more 48. How looks structure of using the - -help option to a command? a. - -help[command] b. [command] - -man c. [command] help d. [command] -help e. [command] - -help 49. How to change up one level from the current directory and the down into the other directory? a. cd ../[otherdirectory] b. cp ../[otherdirectory] c. mv.. ../[otherdirectory] d. ../[otherdirectory] e. cd../.../ 50. How to display a man page for a different section? a. crontab b. man -v c. man [number of section] [command] d. man[command] e. - - help 51. How to display today’s date? a. date b. $HOME c. man d. $HISTSIZE e. info 52. How to search for “newer” files? a. updatedb b. search c. using d. - -find e. find 53. How to see a list of movement commands? a. Type the letter z or Z b. Type the letter a or g c. Type the letter m or M d. Type the letter q or n e. Type the letter h or H 54. How to see not only the contents of a directory, but also the contents of the subdirectories. a. ls -R[path] b. ls -tH[path] c. ls -l[path] d. ls -r[path] e. ls -h[path] 55. How would you finish your script an exit code of 42? a. return 42 b. $?=42 c. exit 42 d. CODE =42 e. break 42 56. How would you write a test that says “if /tmp/foo is directory or USERS is greater than 5” a. test -d /tmp/foo -o $USERS -gt 5 b. test /tmp/foo -d -o $USERS -gt 5 c. test -d /tmp/foo | $USERS > 5 d. test /tmp/foo || $USERS > 5 57. If a user is deleted, the files and directories that the user owned… (became orphaned files) a. … will show a UID as the owner, but not user name b. … will have no user owner c. … are deleted as well d. … will have no UID owner 58. If you wanted to let a Linux machine share files Windows clients and servers? You would use: a. DNS b. NFS c. bind d. Samba e. Netatalk 59. In general for which of the following you want to use lossless compression? a. A JPEG image b. An mp3 audio file c. An encrypted email (?) d. Log file 60. In Linux, RPM can be defined as: a. Radical performance machine b. The speed a record plays back at c. Relational peak monitoring d. The Package Manager program for Red Hat Linux e. Random program memory 61. In the command tar =cvjf foo.tbz a b c, what are a, b, and c? a. Is the directory will be prepended to files; b and c are files inside it b. Matching operators; anything starting with a, b, or c will be added c. Nothing; cvjf only expects one parameter d. File names to be added to the archive 62. Information about the init process can be found in the /proc/1 directory. a. True b. False 63. Linux distributive use this to add and remove software from the system: a. Application Programming Interface (API) b. Package manager c. Bash d. Compiler e. Partitioning tool 64. Many open source licenses such as BSD and MIT do not contain the copyleft provisions and are thus not acceptable to the FSF (Free Software Foundation). These licenses are called ___ free software licenses. a. Lax b. Agreeable c. Permissive d. Indulgent 65. Most of NANO’s commands take the form of: a. Escape followed by another character b. Mouse clicks c. Control and another character d. The F1 though F12 function keys e. Alt and another character 66. Octal notation uses the following values for the permissions granted: a. r=7, w=5, x=0 b. r=4, w=2, x=0 c. r=4, w=2, x=1 d. r=3, w=2, x=1 67. POP and IMAP are related to: a. Reading and writing music b. Letting users log in to multiple with 1 set of credentials c. Serving web pages d. Sharing files e. Email 68. Setting setgid on a directory… a. … will allow scripts in the directory to be executed as the group owner of the directory b. … will set the group owner of all files created in the directory to the group owner of the directory c. … does nothing d. … is not allowed by the system 69. Software is backward compatible if: a. People still use old versions b. If the next version still works the same way c. It will supports old file doormats or applications d. Is can be upgraded without downtime e. It works across Linux/Mac/Windows 70. Software that allows hardware devices to communicate with the installed operating system is called? a. Instructions b. Drivers c. Package Packages d. Programs 71. Structure of calling info pages a. I [command] b. info [command] c. calinfo [command] d. -info [command] e. help [command] 72. The _GREP_ command… a. … will display the line numbers in a file that contain a specific Regular Expression b. … is not case sensitive c. … will display all the lines in a file containing the specified Regular Expression d. … will display all the lines that begin with the specified Regular Expression 73. The _IF_ command looks for that exit code to consider a condition to be true? a. 255 b. 1 c. 0 d. 2 e. 10 74. The “execute” permission on a file allows you to: a. Move the file to a new directory b. Run the file as a script c. This permission isn’t meaningful for text files d. Delete the file 75. The “setuid” permission... a. … allows a command to be run as the file owner b. … report the output of a script to the owner c. … prevents the owner of a file from being changed d. … allows files is a directory to be manipulated as by the directory owner 76. The “sticky bit” permission… a. … prevents others from removing files they don’t own from a common directory b. … sets the group ownership of any new file created in a directory c. … prevents others from overwriting files they don’t own in common directories d. … changes the group ownership of existing files in a directory 77. The /etc/group file what structure? a. group_name:password_placehoder:GID:user_list b. user:group c. group:GID:user_list d. groups -a 78. The /proc directory contains a subdirectory for each process present on the system a. TRUE b. FALSE 79. The asterisk character is used to represent zero or mode of any character in a filename. a. True b. False 80. The chgrp command can be used on a file by: a. Only the file owner b. A user belongs to the files current group c. Only root d. The file owner and root 81. The chmod command can be used on a file by: a. A user that belongs to the current group b. The file owner c. Only root d. The file owner and a root 82. The chow command can be used to change the user owner on a file by: a. The file owner and root b. Only root c. A user that belongs to the files current d. The file owner 83. The command rm -r will… a. generate an error; -r isn’t a valid option b. remove only empty directories c. prompt for each confirmation before deleting each file in a directory d. remove a directory along with any files or subdirectories 84. To correct command structure for getting manual page looks like: a. man [command] b. manual [command] c. sos [command] d. help [command] e. date [command] 85. The fdisk command is a tool used for working with the MBR partitioned disks. a. True b. False 86. The free command outputs statistics about: a. CPU usage b. Software usage c. Memory usage d. Disk usage 87. The Linux platform that runs on mobile phones is called: a. IOS b. LinuxMobile c. MicroLinux d. Teledroid e. Android 88. The logging daemon on recent Linux distributions on system is called: a. knogd b. rsyslogd c. syslogd d. journald 89. The main purpose of using glob characters to be able to provide a list of filenames to a command. a. False b. True 90. The most important consideration when choosing an operating system is: a. What the intended use of the systems is b. Whether or not is cloud-friendly c. How much performance is needed d. The licensing model of the operating system e. The total cost of ownership 91. The most popular Linux platform for mobile phones is: a. Android b. BlackBerry c. MobileLinux d. IOS e. Slackware 92. The numbers of users logged in is a variable called USERS. How would you test to see if 5 users are logged in? a. test $USERS = 5 b. test – f USERS = 5 c. test $USERS, 5 d. test $USERS -a 5 e. test $USERS -eq 5 93. The process (ps) command shows only processes running in the current shell by default. a. TRUE b. FALSE 94. The Process ID (PID) of the init process is: a. 100 b. 1 c. 0 d. 101 95. The release cycle: a. Should be long so that you have time before you need to upgrade b. Describes how long software will be supported c. Should be shot so you always have the freshest releases d. Only has meaning for paid software e. Dictates how often software is update 96. The rm command can delete multiple files at once. a. False b. True 97. The Samba application is a: a. File Server b. Mail Server c. Security Server d. Web Server 98. The sudo command allows regular uses to… a. … execute any command as root, after providing the root password. b. … run any command as root, after providing the sudo password. c. … execute commands as another user. d. … run any commands as a system account without logging in. 99. The term for individual computers running multiple systems at the same time it: a. Distribution b. Cloud priority c. Virtualization d. MultiRun e. Googleization 100. To find files with a specific name, use the following command: a. locate “\[filenane]” b. location “\[filenane]” c. location -b [filenane] d. location -b “\[filenane]” e. locate -b “\[filenane]” 101. Traditional UNIX systems allowed users to belong to how many groups? a. 256 b. 10.000 c. 1 d. 16 e. 65.000 102. UID-s 1-499 are usually for what kind of users? a. System accounts, such as server processes b. Remote log-in accounts c. Are not used accounts, but for group accounts d. Log-in (human) users 103. Virtualization means: a. Two users get different memory spaces on the same machine b. A single host can be split up into multiple guests c. A machine can swap memory to disk d. A user can connect to a server over the network and use a virtual console e. Many users can share one hard drive 104. What are the advantages of solid state disks when compared to traditional spinning platter hard disks? a. Low cost b. Less heat c. Faster system boot times. d. Higher capacity 105. What command we can use to change your current directory? a. touch b. ls c. mv d. cp e. cd 106. What difference between commands info and man? a. info to change directories, and man to additional help b. no differences c. info often written more like “lessons” while man pages are written as documentation d. info to get a list of directories, and man to search e. they are the same 107. What directory contains a user’s home directory? a. /user b. /home c. / d. /roots 108. What directory typically contains log files? a. /var/log b. /usr/log c. /proc/log d. /log 109. What does a distribution provide to add and remove software from the system? a. Package Manger b. Application Programming Interface (API) c. Compiler d. Bash e. Partitioning tool 110. What does this shell script do? [What does this shell script do?] (видимо здесь должно быть это, ибо это единственное совпадение в вопросах в интернета, но в самой базе текста ниже нет) FOO =/tmp/foo if [ ! -d$FOO ]; then mkdir $FOO fi a. Nothing, since there is a problem with the conditions in the if statement b. Makes the /tmp/foo directory a file by that name exists c. Outputs a massage to the screen d. Creates /tmp/foo if it does not exist e. Creates /tmp/foo and raisers an error if there is a problem 111. What information is held inside _$?_? a. The number of arguments passed to the script b. The current process id c. The previous command’s exit code d. The name of the command run e. The current user ID 112. What is a home directory? a. all of the above b. directory for displaying desktop files c. folder for trash d. root directory e. the directory that your terminal windows is currently “in” 113. What is a relative pathname? a. with relative paths, you display a list of commands available to execute b. with relative pathnames you provide “directions” of where you want to go from the current directory c. with relative paths, you get information about the current directory d. none of the above e. with relative path, you specify the files you want to display 114. What is an inode? a. There is no such word b. sophisticated big data search algorithm c. specialized program for accounting names, identifiers and other data d. unique identifier number assigned to each file e. text viewer 115. What is the absolute path? a. path to home directory b. directory where located other directories c. path for arguments and commands d. complete paths from the root directory to a subdirectory or file e. none of the above 116. What is the correct way to assign the world “Hello” to a variable? (there shouldn’t be spaces around =) a. echo “Hello” $amp;gtA b. A = “Hello” c. echo $A “Hello” d. A=“Hello” e. $A= “Hello” 117. What is the correct way to assign the world “Hello” to a variable? a. echo $A “Hello” b. A = Hello c. A = “Hello” d. $A = “Hello” e. echo “Hello” $amp;gtA 118. What is the correct way to save the current directory to a variable? a. pwd | $A b. pwd $A c. A=pwd d. A= ‘pwd’ e. A=cwd 119. What is the default user for the su command? a. All users b. The most recently created user c. The root user d. Any member of the password group 120. What is the meaning of _$(($l+1))_? a. 1 will be added to the I variable b. This runs the command stored in variable i c. This will return the value of the first argument to the script d. If I if 0. The loop will stop e. This will return the value of the next argument One of the jobs of the kernel is to: Manage the system’s resources Turn source code into machine code Load the operating system after the computer is turned on Transfer mail from one machine to another |