Free SUSE sca_sles15 Practice Exam with Questions & Answers

The -U option will install a package whether or not a previous version of the package is already installed. If a previous version exists, it will be upgraded. The -F option will install a package only if a previous version of the package is already installed. It will not install a new package.References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-sw-cl.html#sec-rpm-commands

The types of files that are used for inter-process communications are pipe and socket files. Pipe files are used for unidirectional data flow between two processes. They can be created with the mkfifo command or with the | operator in a shell command. Socket files are used for bidirectional data exchange between processes on the same or different machines. They can be created with various system calls or commands depending on the protocol and domain. References: https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-pipes.html https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-sockets.html

By default, the VNC Client and the VNC server daemon use a self-signed SSL certificate for secure communications. The VNC server generates a self-signed certificate when it is started for the first time. The VNC Client will prompt the user to accept or reject the certificate when connecting to the server. Alternatively, the user can provide a custom certificate for the VNC server or disable encryption if desired. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-vnc-security.html

The /mnt directory is traditionally used as a catch all to mount local and/or remote file systems. It is a generic mount point for temporary mounts by the system administrator. It may contain subdirectories for different types of file systems or devices, such as /mnt/cdrom, /mnt/usb, /mnt/nfs, etc. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-storage-mounting.html#sec-storage-mounting-mnt

If the file1.txt file already exists in your home directory, the touch -7file1.txt command will change the access and modification times of the existing file1.txt file. The touch command can be used to create new empty files or update the timestamps of existing files. The -7 option specifies that only one timestamp should be changed instead of both. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-touch.html

The command that is used to manage software RAID is mdadm. This command can be used to create, assemble, monitor, and manage multiple device (md) arrays that provide RAID functionality. It can also be used to query and modify various parameters and settings of md arrays. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-raid.html#sec-raid-mdadm

The configuration files that have a format that is compatible with the system logging facility in SUSE Linux Enterprise are /etc/syslog.conf and /etc/rsyslog.conf. These files contain rules that specify how to filter and process log messages from different sources and destinations. The /etc/syslog.conf file is used by the traditional syslogd daemon, while the /etc/rsyslog.conf file is used by the more advanced rsyslogd daemon. SUSE Linux Enterprise uses rsyslogd by default, but it can also read /etc/syslog.conf for backward compatibility. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-syslog.html#sec-syslog-config

Save a File in Vim / Vi #The command to save a file in Vim is :w.

To save the file without exiting the editor, switch back to normal mode by pressing Esc, type :w and hit Enter.

https://linuxize.com/post/how-to-save-file-in-vim-quit-editor/

The w command will save the current file without exiting Vim. It stands for write. The other commands are either invalid or will exit Vim after saving. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-vim.html#sec-vim-save

The execute permission on a directory means you can use the cd command to change into the directory. It also means you can access the files and subdirectories inside the directory, if you have read permission on them. The execute permission does not affect the visibility or exportability of the directory. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-file-permissions.html

If you want to define alias commands so that each time you open a terminal window those aliases are available from the command prompt, you should create a file named -/.alias and put your alias commands in that file. The -/.alias file is one of the files that are sourced by the bash shell when it starts. It can contain alias definitions and other customizations for your shellenvironment. References:https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-bash.html#sec-bash-startup