Answer:
The command to create a compressed archive (archive1.tar.gz) is

Explanation:
The explanation for the above command is
The general command to create a compressed archive is
tar -czvf name-of-archive.tar.gz /path/to/directory-or-files
Here, the terms are as follows:
-c : Creates an archive
-z : Compress the archive with gzip.
-v : This is known as verbose. This is an optional command and it displays the progress on terminal command. Without this the progress is not displayed on terminal command.
-f : Allows to specify the file name of the archive.
Here, if we want to archive multiple files, we provide the command the names of multiple files or directories of the files also can be used.
So, the command 
creates a compressed archive - archive1.tar.gz of files test1, test2 and test3.
Answer:
A) Electronic notebooks store images, videos, notes, and voice recordings in one area, while electronic flash cards are study tools with information written on both sides.
Explanation:
Just took the test
Edge 2020
Knowledge, and your brain.
Answer:
Receiving unexpected results from a program
Explanation:
Logic errors are due to the program not producing a desired result.