Linux Final Prep Quiz

Beschreibung

Quiz am Linux Final Prep Quiz, erstellt von Michael Marcus am 14/08/2016.
Michael Marcus
Quiz von Michael Marcus, aktualisiert more than 1 year ago
Michael Marcus
Erstellt von Michael Marcus vor mehr als 8 Jahre
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2

Zusammenfassung der Ressource

Frage 1

Frage
Operations on the directory stack manipulate the top item in the stack only
Antworten
  • True
  • False

Frage 2

Frage
graphical.target is equivalent to the old runlevel 3
Antworten
  • True
  • False

Frage 3

Frage
Which of the following items can appear in the user_list element on a configuration line in the /etc/sudoers file?
Antworten
  • All
  • User_Alias names
  • Group_Alias names
  • Host Names
  • Group names preceded by a '^'
  • user names
  • group names preceded by a '%'

Frage 4

Frage
The Pluggable Authentication Module (PAM) is a facility that supports using multiple authentication methods while providing a common interface to common applications or services seeking to authenticate a user.
Antworten
  • True
  • False

Frage 5

Frage
Before executing any command, the bash shell pre-processes the command line to make sure it is syntactically correct and all necessary expansions have been done.
Antworten
  • True
  • False

Frage 6

Frage
In what directory are most system configuration files stored?
Antworten
  • /local
  • /usr
  • /var
  • /etc

Frage 7

Frage
The /etc/sudoers configuration file should only be edited using the visudo or sudo -e commands to avoid syntax errors in the file.
Antworten
  • True
  • False

Frage 8

Frage
The /tmp directory is a working directory for temporary files that is accessible to any user on a Linux system.
Antworten
  • True
  • False

Frage 9

Frage
Which of the following is NOT part of a system administrator's duties?
Antworten
  • Backup the system on a regular basis
  • Enter customer orders into the sales database system
  • Secure the system against deliberate and accidental breaches
  • Keep the system running well enough to support business/user needs

Frage 10

Frage
Which of the following is NOT a valid variable name in a shell script?
Antworten
  • day1_
  • 1_day
  • _day1
  • day_1

Frage 11

Frage
The chsh command temporarily changes the current user's shell
Antworten
  • True
  • False

Frage 12

Frage
Where is PAM configuration stored on a Fedora or RedHat system?
Antworten
  • /etc/PAM.conf
  • /etc/pam.conf
  • /etc/pam.d file
  • /etc/pam.d/ directory

Frage 13

Frage
In the following line of output from the ls -l command, what does the b at the beginning of the line mean? brw-rw----, 1 root disk 8, 1 Dec 31 17:02 sda1
Antworten
  • sda1 is a directory
  • sda1 is an ordinary file
  • sda1 is a character device\
  • sda1 is a block device

Frage 14

Frage
Assuming that the following alias command is included in a user's ~/.barshc file, alias t="tar -v" and the user types the following at the shell prompt, t -zcf /tmp/test.tar test.txt What would the actual command executed be?
Antworten
  • t -zcf /tmp/test/tar test.txt
  • tar -zcf /tmp/test/tar test.txt
  • tar -v -zcf /tmp/test/tar test.txt
  • ○ t -v /tmp/test/tar test.txt

Frage 15

Frage
In which of the following startup files or directories should user-specific configuration settings be put?
Antworten
  • ~/.bashrc
  • /etc/profile.d/
  • ~.bash_profile
  • /etc/profile
  • /etc/bashrc

Frage 16

Frage
What is the command to start X windows when a Linux system is running at the multi-user.target level?
Antworten
  • Xorg
  • X11
  • gdm
  • Startx

Frage 17

Frage
When using the Logical Volume Manager facility, all disk space can be placed under the control of that facility.
Antworten
  • True
  • False

Frage 18

Frage
What is the default target on Fedora Linux systems?
Antworten
  • graphical.target
  • multi-user.target
  • basic.target
  • getty.target

Frage 19

Frage
What is the purpose of the HISTSIZE environment variable?
Antworten
  • Sets the number of commands stored in the history memory cache and the history file
  • Sets the number of commands stored in the history file
  • Sets the history file name
  • Sets the number of commands stored in the history memory cache

Frage 20

Frage
One of the reasons that the systemd deamon replaced the old System V init daemon in order to support newer hardware technologies.
Antworten
  • True
  • False

Frage 21

Frage
When typing a command at the shell prompt it is possible to type part of a command name and then use the TAB key to complete the command, if the part of the command entered is unique.
Antworten
  • True
  • False

Frage 22

Frage
The ext3, ext4 and xfs file systems all support journaling but are not commonly used.
Antworten
  • True
  • False

Frage 23

Frage
Which of the following commands, when used with the appropriate options, displays a list the process ID numbers for all processes running a certain command
Antworten
  • jobs
  • ps
  • pidof

Frage 24

Frage
The $0 parameter of a shell script always contains the name of the script.
Antworten
  • True
  • False

Frage 25

Frage
Which of the following methods of gaining root privilege is the least advisable?
Antworten
  • setuid
  • sudo
  • su
  • Log in as root

Frage 26

Frage
Which of the following shells is currently used to prevent a non-privileged user from logging in interactively?
Antworten
  • /bin/nologon
  • /bin/bash
  • /bin/false
  • /bin/tsh

Frage 27

Frage
fschk can check and repair a mounted file system.
Antworten
  • True
  • False

Frage 28

Frage
Which of the following commands displays recent system messages?
Antworten
  • logger
  • mesg
  • dmesg
  • logprint

Frage 29

Frage
The ~/.inputrc file is used to configure which of the following history manipulation methods?
Antworten
  • history
  • readline history
  • !
  • fc

Frage 30

Frage
A package manager is a software tool designed to assist system administrators with the management of software on a Linux system.
Antworten
  • True
  • False

Frage 31

Frage
The ldd command is used to funnily configure a chroot environment.
Antworten
  • True
  • False

Frage 32

Frage
What is the output of the command: df -h
Antworten
  • A list of the mounted file systems with all size information shown in human readable form
  • A list of the mounted file systems with all size information shown in blocks
  • The fragmentation state of each disk on the system

Frage 33

Frage
Gaining root privilege on a system with multiple administrators is a bad method because it involves sharing the password between several people.
Antworten
  • True
  • False

Frage 34

Frage
When multiple interactive bash shells are opened by a user, the history for all of the shells will be saved to disk as each is closed.
Antworten
  • True
  • False

Frage 35

Frage
Administrative (root) privilege on a Linux system should be granted to anyone who asks for it.
Antworten
  • True
  • False

Frage 36

Frage
Which of the following is NOT an advantage of using sudo?
Antworten
  • Customized privilege settings can be created on a group-by-group basis
  • Customized privilege settings can be created on a user-by-user basis
  • No one needs to know the root password
  • The root password is shared amongst system administrators

Frage 37

Frage
Which of the following commands lists the contents of a package?
Antworten
  • rpm -q <package>
  • rpm -qa <package>
  • rpm -ql <package>
  • rpm -qf <package>

Frage 38

Frage
Which of the following commands will report weather the sshd daemon is set to automatically start at some target level?
Antworten
  • systemctl is-enabled sshd
  • systemctl is-active sshd
  • systemctl isactive sshd
  • systemctl isenabled sshd

Frage 39

Frage
What does the 2>&1 mean in the following command? find * >/tmp/find_out.txt 2>&1
Antworten
  • Standard error is sent to the user's terminal screen
  • Standard output is sent to the same file or device as standard error
  • Standard error is sent to the same file or device as standard output
  • Standard error is sent to the bit bucket

Frage 40

Frage
What is the output of the following command? du -s
Antworten
  • A single line of output giving the size and contents of the current directory and all its subdirectories in blocks
  • A single line of output giving the size of contents of the current directory and all its subdirectories in human readable form
  • A summary of the sizes of all files and directories in the current directory in blocks
  • A summary of the sizes of all files and directories in the current directory in human readable form

Frage 41

Frage
Which process in the following jobs command output will be affected by issuing the fg command without parameters? user@f1 ~]$ jobs [1] Running sleep 300 & [2]- Running sleep 400 & [3]+ Running sleep 500 &
Antworten
  • 1
  • 3
  • All Processes
  • 2

Frage 42

Frage
The growfs command can be used to increase the size of a filesystem.
Antworten
  • True
  • False

Frage 43

Frage
TCPWrappers is a daemon based security facility that limits access to the daemon based on IP address.
Antworten
  • True
  • False

Frage 44

Frage
What program is running in the process associated with a physical or virtual terminal prior to a user logging on?
Antworten
  • tsh
  • login
  • bash
  • getty

Frage 45

Frage
The nnswitch facility provides a means to define diverse sources of information (e.g. hostnames, user information) for use by a Linux system. It can decide where to find information and what order to search the various sources.
Antworten
  • True
  • False

Frage 46

Frage
Security Enhanced Linux implements a discretionary access control tool.
Antworten
  • True
  • False

Frage 47

Frage
The default installation of SELinux uses which of the following mode and policy configurations?
Antworten
  • PERMISSIVE and Multilevel Security
  • ENFORCING and Multilevel Security
  • PERMISSIVE and Targeted
  • ENFORCING and Targeted

Frage 48

Frage
Functions are a technique that can be used to add custom operations to a Linux system on a global or user-by-user basis. All custom operations should be added using functions no matter what the complexity or size of the new operations.
Antworten
  • True
  • False

Frage 49

Frage
Which of the following commands sets the X windows pointing device (mouse) for right-handed use?
Antworten
  • xmodmap -e 'pointer = 3 2 1 4 5'
  • xmodmap -e 'pointer = 3 1 2 4 5'
  • xmodmap -e 'pointer = 1 2 3 4 5'
  • xmodmap -e 'pointer = 1 3 2 4 5'

Frage 50

Frage
What is the default desktop environment used by Fedora and RedHat systems?
Antworten
  • GNOME
  • multi-user.target
  • graphical.target
  • KDE

Frage 51

Frage
Given the initial directory stack containing the following entries: ~/testdir/dir2/dir2-1 ~/testdir/dir1/dir1-1 ~/testdir/ ~ what would the stack contain if the pushd command was issued with no parameters?
Antworten
  • ~/testdir/ ~ ~/testdir/dir2/dir2-1 ~/testdir/dir1/dir1-1
  • ~/testdir/dir1/dir1-1 ~/testdir/dir2/dir2-1 ~/testdir/ ~
  • ~/testdir/dir2/dir2-1 ~/testdir/dir1/dir1-1 ~/testdir/ ~
  • ~/testdir/ ~/testdir/dir2/dir2-1 ~/testdir/dir1/dir1-1 ~

Frage 52

Frage
Which of the following commands clears the screen on a Linux terminal?
Antworten
  • cls
  • clear
  • blank

Frage 53

Frage
Some organizations lock the root account. Others use a very long complex root password that is not known to the system administrators. Both of these approaches are valid when sudo is used for system administration.
Antworten
  • True
  • False

Frage 54

Frage
What does the parameter $@ contain?
Antworten
  • This parameter contains all of the parameters of the current shell script including the name of the script
  • This parameter contains all of the parameters of the current shell script except the name of the script
  • The last parameter of the current script
  • The first parameter of the current script

Frage 55

Frage
Which of the following commands includes a processes' PID in their output?
Antworten
  • jobs -l
  • ps
  • ls
  • jobs

Frage 56

Frage
When an external command is invoked from a bash shell it always runs as a separate process from the shell's process.
Antworten
  • True
  • False

Frage 57

Frage
The source builtin command is used to load/reload startup files.
Antworten
  • True
  • False

Frage 58

Frage
If the su command is issued without specifying a user, which user is assumed?
Antworten
  • root
  • The user issuing the command
  • A random user account

Frage 59

Frage
Which of the following are characteristics of the xfs file system?
Antworten
  • Very large file system sizes
  • Journaling
  • Live file system expansion and defragmentation
  • Poor backup functionality when compared to ext4

Frage 60

Frage
What is the result of issuing the following bash builtin command? history 20
Antworten
  • Lists the 20 most recently used commands
  • Lists 20 randomly chosen commands from history
  • Lists the 20 least recently used commands

Frage 61

Frage
What is the effect of placing the line ALL: ALL into the /etc/hosts.deny files while leaving /etc/hosts.allow empty?
Antworten
  • Allow connections to all daemons from any IP address
  • Disallow connections to all daemons from any IP address except 127.0.0.1
  • Disallow connections to all daemons from any IP address

Frage 62

Frage
What is the purpose of the dirs command?
Antworten
  • Display the contents of the directory stack
  • Swap entries in the directory stack
  • Remove entries from the directory stack
  • Add entries to the directory stack

Frage 63

Frage
What does the following command do? yum group install Robotics
Antworten
  • Install all packages whose names contain with Robotics
  • Install all packages whose names begin with Robotics
  • Install all packages whose names end with Robotics
  • Installs of the packages contained within the group named Robotics

Frage 64

Frage
What is the change command used for?
Antworten
  • Change the expiry date on a user's account
  • calculate a user's age based on the information in that user's account
  • Change the date of birth information stored in a user's account
  • change password ageing parameters associated with a user's account

Frage 65

Frage
The CUPS printer server offers which of the following facilities?
Antworten
  • Printer hardware configuration
  • Printer class (group) management
  • printer queue configuration and management
  • Print job queueing and management

Frage 66

Frage
Which of the following commands lists all of the devices (printers) configured on the local system?
Antworten
  • lpinfo -v
  • lpinfo -m

Frage 67

Frage
User and group ID numbers must be unique on Linux systems.
Antworten
  • True
  • False

Frage 68

Frage
Which of the job scheduling facilities available on a Linux system execute jobs repeatedly at the specified time, provided that the system is available at the specified time?
Antworten
  • at
  • cron
  • anacron

Frage 69

Frage
CUPS supports printing to: locally connected printers, networked printers, and printers shared by other computers.
Antworten
  • True
  • False

Frage 70

Frage
How can CUPS be configured?
Antworten
  • system-config-printers GUI program
  • Web interface
  • Command line programs
  • All of the above

Frage 71

Frage
Which of the following is the language that almost every printer will accept?
Antworten
  • PCL
  • PS
  • Plain Text

Frage 72

Frage
Where is local user account information stored on a Linux system?
Antworten
  • /etc/passwd and /etc/shadow
  • /etc/group and /etc/shadow
  • /etc/passwd and /etc/group

Frage 73

Frage
Which of the following is not one of the things that should be available when building and installing a new kernel?
Antworten
  • Remove all previous kernels from the system
  • Backup the filesystem
  • Have the OS installation media available
  • Do not remove the last known working kernel from the system

Frage 74

Frage
It is possible to lock a user account. This is achieved by which of the following?
Antworten
  • Changing the password to a single %
  • Changing the password to a single !
  • Placing a % at the beginning of the password
  • Placing a ! at the beginning of the password

Frage 75

Frage
Print servers can be built into a printer or run as a daemon on a computr system.
Antworten
  • True
  • False

Frage 76

Frage
You have just downloaded some software in a file named mailer.tar.gz. Which of the following commands would you use to install the software into the current directory assuming that mailer.tar.gz is also in the current directory?
Antworten
  • tar -zxf mailer.tar.gz
  • gunzip mailer.tar.gz
  • unzip mailer.tar.gz
  • uncompress mailer.tar.gz

Frage 77

Frage
CUPS provides which of the following print job operations?
Antworten
  • Accepts and queues print jobs
  • Dispatches queued print jobs to active printers
  • Notifies the requesting user when a print job is complete
  • Cancels print jobs at the user's request

Frage 78

Frage
What is the purpose of the command: yum check
Antworten
  • Check for available package updates
  • Check the status of the local yum database
  • Check the status of the local RPM database

Frage 79

Frage
Which of the following commands will display a list of all available packages with 'httpd' anywhere in their names?
Antworten
  • yum list avilable | grep httpd
  • yum list "httpd"
  • yum list httpd*
  • yum list *httpd

Frage 80

Frage
Given the following line from a user cron settings * * * * * /usr/bin/uptime how often will the uptime command be run?
Antworten
  • once a minute
  • once a year
  • once a day
  • once an hour
  • once a month

Frage 81

Frage
Which of the following is not a reason to change the characteristics of a Linux kernel?
Antworten
  • Install a web server daemon
  • Create a specialized kernel for an embedded system
  • Use a non-default kernel configuration
  • Install a new hardware driver

Frage 82

Frage
Which of the following command pairs will allow users to submit print jobs to queue prt1 without the jobs being immediately printed?
Antworten
  • cupsreject prt1 cupsdisable prt1
  • cupsreject prt1 cupsenable prt1
  • cupsaccept prt1 cupsdisable prt1
  • cupsaccept prt1 cupsenable prt1

Frage 83

Frage
System-wide password rules can be set using which of the following commands?
Antworten
  • system-config-users
  • system-config-authentication
  • system-config-auth
  • system-config-security

Frage 84

Frage
The rpmdev-setuptree command creates a directory structure for building packages from the course in the home directory of the user that executed the command.
Antworten
  • True
  • False

Frage 85

Frage
When an rpm file is downloaded from a website rather than from a repository, which utility or utilities can be used to install it?
Antworten
  • both rpm and yum
  • yum
  • Neither rpm nor yum
  • rpm

Frage 86

Frage
The kernel option names used in the /etc/sysctl.conf file and with the sysctl command are the same.
Antworten
  • True
  • False

Frage 87

Frage
The option in the kernel.spec file %define buildid .test1 causes the new kernel and all its associated package and configuration files to contain the string '.test1' to identify it as a custom kernel. Each time a kernel is built this option must be modified to uniquely identify the build.
Antworten
  • True
  • False

Frage 88

Frage
The web interface for CUPS may have different printer definitions listed than the GUI program.
Antworten
  • True
  • False

Frage 89

Frage
You have downloaded the source code for a program that is not part of your Linux distribution. In what order would you execute the following commands to set it up on your system? (1-4 selection)
Antworten
  • ./configure (1)
  • Make (2)
  • make test (3)
  • make install (4)

Frage 90

Frage
On a Fedora Linux system, which of the following repositories are enabled by default?
Antworten
  • fedora
  • fedora-source
  • updates
  • updates-source

Frage 91

Frage
Which of the following commands is the best one for downloading kernel source code from a repository?
Antworten
  • yum install kernel.source
  • yumdownloader kernel.source
  • yum install source.kernel
  • yumdownloader --source kernel

Frage 92

Frage
The sysstat package contains a number of system statistic gathering and reporting tools. Which of the following are some tools in this package?
Antworten
  • nfsstat
  • sar
  • iostat
  • netstat

Frage 93

Frage
Which of the following files, related to GRUB configurations, should never be edited directly?
Antworten
  • /etc/grub.d/*
  • /boot/grub2/grub.cfg
  • /etc/default/grub

Frage 94

Frage
Which of the following packages are recommended prerequisites for building a new kernel?
Antworten
  • gcc
  • rpmdevtools
  • yum-utils
  • python
  • ncurses-devel
  • libglade2-devel

Frage 95

Frage
The only way to modify kernel characteristics is to build a new, custom kernel.
Antworten
  • True
  • False

Frage 96

Frage
The command yum install ntp bind will download and install which of the following items?
Antworten
  • the bind package
  • all of the dependencies of the ntp package that are not already installed
  • all of the dependencies of the bind package that are not already installed
  • all updates that have not been installed for any package on the system
  • the ntp package

Frage 97

Frage
What is the purpose of the command yum-builddep kernel-3.14.27-100.fc19.src.rpm
Antworten
  • Install all of the packages upon which the specified source package depends when the source within the package is built
  • Download, install and build all of the source code related to the specified package
  • Installs all of the build tools needed to build and install the sources within the specified package

Frage 98

Frage
The batch command forces scheduled jobs to run at the specified time no matter what the system load.
Antworten
  • True
  • False

Frage 99

Frage
Package repositories are online storage sites for distribution packages, distribution update packages, but are never used for 3rd party packages.
Antworten
  • True
  • False

Frage 100

Frage
Which of the following commands deletes the definition of printer prt1?
Antworten
  • lpadmin -p prt1 -x
  • lpstat -x prt1
  • lpadmin -p prt1 -d
  • lpstat -d prt1

Frage 101

Frage
CUPS page count quotas work only with PostScript print files
Antworten
  • True
  • False

Frage 102

Frage
Given the commanduseradd -s /bin/bash/bash -d /home/joan -G wheel -g staff -c "Joan Smith" joan what will Joan's primary group be?
Antworten
  • staff
  • Not specified in the command
  • wheel

Frage 103

Frage
CUPS can accept print jobs from: local users and processes, and remote system.
Antworten
  • True
  • False

Frage 104

Frage
What does the following command produce as output: yum list *kern*
Antworten
  • A list of all available package with the string 'kern' anywhere in its name
  • A list of all installed package with the string 'kern' anywhere in its name
  • A list of all known package without the string 'kern' anywhere in its name
  • A list of all known package with the string 'kern' anywhere in its name

Frage 105

Frage
Where are user cron job definitions stored?
Antworten
  • /var/spool/cron/*
  • /var/cron/*
  • /ext/crontab
  • /etc/cron.*

Frage 106

Frage
By default, CUPS accepts print jobs from both local users and processes, and remote system.
Antworten
  • True
  • False

Frage 107

Frage
Which of the following commands will display the current value of the vm.drop_caches kernel parameter?
Antworten
  • sysctl
  • sysctl -w vm.drop_caches=1
  • sysctl -a
  • sysctl vm.drop_caches

Frage 108

Frage
Which of the following commands can be used to create a new kernel configuration from scratch?
Antworten
  • make config
  • make menuconfig
  • make gconfig
  • make oldconfig

Frage 109

Frage
The command sysctl -p /etc/sysctl.conf can be used to change the running kernel configuration without a reboot after editing the /etc/sysctl.conf file.
Antworten
  • True
  • False

Frage 110

Frage
When the /etc/cups/cupsd.conf file contains the following configuration section, only network print requests from 127.0.0.1 (localhost) will be accepted. <Location /> Order Allow Deny Allow @LOCAL </location>
Antworten
  • True
  • False

Frage 111

Frage
A good approach to backing up a Linux system is to perform periodic full backups with incremental backups in between them.
Antworten
  • True
  • False

Frage 112

Frage
For CUPS to be able to accept print jobs form remote systems using the IPP protocol, the local system's firewall must allow incoming traffic on which of the following ports?
Antworten
  • 389 udp and tcp
  • 53 tcp and udp
  • 631 tcp and udp
  • 81 tcp and udp

Frage 113

Frage
Which of the following commands can be used to backup a Linux system?
Antworten
  • cpio
  • dump
  • rsync
  • tar

Frage 114

Frage
What does the $(arch) of the following command do? rpmbuild -bp --target $(arch) kernel.spec
Antworten
  • Retrieves the value of the arch environment variable and substitutes it into the command
  • Runs the arch command and substitutes the result in the command

Frage 115

Frage
Which of the following is not a function of host-based print servers?
Antworten
  • Manage print queues
  • Assign an IP address to a network printer
  • Monitor print and queue status
  • Create a print queue and associate it with a printer

Frage 116

Frage
Which of the following commands can be used to create groups on a Linux system?
Antworten
  • useradd
  • system-config-users
  • groupmod
  • groupadd

Frage 117

Frage
Every user on a Linux system has a user ID number. Which of the following describes the way user ID numbers are assigned on modern Fedora/RHEL systems?
Antworten
  • 0 - 999 system users 1000 - 65535 regular users
  • 0 - 499 system users 500 - 32767 system users
  • 0 - 499 system users 500 - 65535 regular users
  • 0 - 999 system users 1000 - 35767 regular users

Frage 118

Frage
The yum and rpm utilities can be used to install, update and remove software packages that are distributed as source code within tar archive files without any intermediate steps
Antworten
  • True
  • False

Frage 119

Frage
Which of the following are methods for permanently changing the configuration of a Linux kernel?
Antworten
  • editing the file /etc/sysctl.conf and rebooting the system
  • editing the files in, or adding new files to /etc/sysctl.d and rebooting the system
  • setting options using the sysctl command
  • building and installing a new kernel and then rebooting the system

Frage 120

Frage
Which of the following is not a protocol that CUPS supports for communicating with printers?
Antworten
  • IPP
  • SMTP
  • SMB
  • LPD/LPR

Frage 121

Frage
The yum utility should be used to install, update and remove software on a Linux system whenever possible.
Antworten
  • True
  • False

Frage 122

Frage
Which of the following is not one of the factors that is used to determine if a kernel component is compiled into the kernel or made available as a loadable kernel module?
Antworten
  • Size
  • Frequency of use
  • Time to load
  • Execution complexity
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