SIMULATION -
What word is missing from the following SQL statement? insert into tablename ________(909, 'text');
(Please specify the missing word using lower-case letters only.)
SIMULATION -
What word is missing from the following SQL statement? insert into tablename ________(909, 'text');
(Please specify the missing word using lower-case letters only.)
The missing word in the SQL statement is 'values'. The correct SQL syntax for inserting a new row into a table is 'insert into tablename values (909, 'text');'. The 'values' keyword specifies the data to be inserted into the corresponding columns of the table.
Which command makes the shell variable named VARIABLE visible to subshells?
To make the shell variable named VARIABLE visible to subshells, the 'export VARIABLE' command is used. The 'export' keyword marks the variable to be exported with any newly forked child processes, making it available to those subshells. Using 'export $VARIABLE' would be incorrect because it would export the value of the variable rather than the variable itself.
SIMULATION -
By default, the contents of which directory will be copied to a new user's home directory when the account is created by passing the -m option to the useradd command? (Specify the full path to the directory.)
By default, the contents of the /etc/skel directory will be copied to a new user's home directory when the account is created by passing the -m option to the useradd command. The /etc/skel directory contains the skeleton files that are copied to the home directory of the new user, ensuring they have a standard set of configuration files and directories.
SIMULATION -
What word is missing from the following SQL statement?
__________ count(*) from tablename;
(Please specify the missing word using lower-case letters only.)
The missing word in the SQL statement is 'select'. Therefore, the correct statement is: select count(*) from tablename;. The 'select' keyword is essential in SQL as it is used to retrieve data from a database. In this instance, 'count(*)' will return the number of rows in the specified table, and the 'from' keyword indicates the table from which the data should be retrieved.
Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)
The files ~/.bashrc and ~/.bash_profile both affect the behavior of the Bash shell. The ~/.bashrc file is executed whenever a new instance of the Bash shell is started interactively, like opening a terminal window, and is used to configure settings, environment variables, and aliases specific to interactive shells. The ~/.bash_profile file, on the other hand, is executed during login sessions and is used to set up the user's environment, which may involve setting environment variables, establishing the PATH, and incorporating additional configuration from other scripts such as ~/.bashrc.