What command would be used to add new physical volumes to an existing volume group?
Answer(s): A
To add additional physical volumes to an existing volume group, use the vgextend command. The vgextend command increases a volume group's capacity by adding one or more free physical volumes.https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/4/html/cluster_logical_volume_manager/vg_grow#:~:text=To%20add %20additional%20physical%20volumes,or%20more%20free%20physical%20volumes.The command that is used to add new physical volumes to an existing volume group is vgextend. This command will extend a volume group by adding one or more physical volumes to it. The physical volumes must be initialized with pvcreate before they can be added to a volume group.
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-lvm-vgs.html#sec-lvm-vgs-add-pv
When using the nice command, which of the following is the higher priority, -15 or 7?
Answer(s): B
When using the nice command, -15 is the higher priority than 7. The nice command can be used to run a process with a modified scheduling priority. The priority value ranges from -20 (highest priority) to 19 (lowest priority). The default priority is 0. Only root can assign negative priority values to processes.
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-nice.html
If the file1.txt file already exists in your home directory, what will the touch -7file1.txt command do if anything?
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.
https://documentation.suse.com/sles/15-SP3/html/SLES-all/sec-cli-touch.html
Which type of files are used for inter-process communications? (Choose two)
Answer(s): B,G
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.
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
Which commands can be used to terminate processes? (Choose two)
Answer(s): A,E
The commands that can be used to terminate processes are kill and killall. The kill command can be used to send a signal to a process specified by its process ID (PID). The default signal is SIGTERM, which requests a graceful termination of the process. The killall command can be used to send a signal to one or more processes specified by their name. It will match all processes that belong to the current user unless otherwise specified.
https://documentation.suse.com/sles/15- SP3/html/SLES-all/sec-cli-processes.html#sec-cli-processes-kill
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