102-500 exam

Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?A . *B . -C . sD . xView AnswerAnswer: D

What is the main difference between the batch and at commands?A . The batch command will run multiple times.The at command will only run once.B . The batch command will run when system load is low. The at command runs at a specific time.C . The at command reads commands...

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?A . 0 * * * 30 myscriptB . 30 * * * 6 myscriptC . 30 0 * * 0 myscriptD . 30 0-23 * * 0 myscriptE . 0 0-23 * *...

Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)A . ~/.bashconfB . ~/.bashrcC . ~/.bashdefaultsD . ~/.bash_etcE . ~/.bash_profileView AnswerAnswer: B,E

Which of the following commands lists all defined variables and functions within Bash?A . envB . setC . env -aD . echo $ENVView AnswerAnswer: B

What is the conventional purpose of Linux UIDs that are lower than 100?A . They are reserved for super user accounts.B . They are reserved for the system admin accounts.C . They are reserved for system accounts.D . They are unused, aside from 0, because they are targets of exploits.E...

CORRECT TEXT - (Topic 1) What command displays all aliases defined in the current shell? (Specify the command without any path information)View AnswerAnswer: alias, alias -p

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?A . unset -v FOOBAR;./myscriptB . set -a FOOBAR="";./myscriptC . env -u FOOBAD . /myscriptE . env -i FOOBAF . /myscriptView AnswerAnswer: C

CORRECT TEXT - (Topic 1) What word is missing from the following SQL statement? __________ count(*) from tablename; (Please specify the missing word using lower-case letters only.)View AnswerAnswer: select

Which of the following commands puts the output of the command date into the shell variable mydate?A . mydate="$(date)"B . mydate="exec date"C . mydate="$((date))"D . mydate="date"E . mydate="${date}"View AnswerAnswer: A