1.What word will complete an if statement in bash such as the following:

　　if [ -x "$file" ]; then echo $file

　　_____

　　(Please provide the missing word only)

　　ANSWER: FI

　　2.Which of the following words is used to restrict the records that are returned from a SELECT query

　　based on a supplied criteria for the values in the records?

　　A.LIMIT

　　B.FROM

　　C.WHERE

　　D.IF

　　Answer: C

　　3.In the following command and its output,

　　echo $$ 12942

　　what is 12942?

　　A.the process ID of the echo command

　　B.the process ID of the current shell

　　C.the process ID of the last command executed

　　D.the process ID of the last backgrounded command

　　Answer: B