Lpi LPI Certifications 102-500 Questions & Answers

• Question 181:

  When the command echo $ outputs 1, which of the following statements is true?

  A. It is the process ID of the echo command.

  B. It is the process ID of the current shell.

  C. It is the exit value of the command executed immediately before echo.

  D. It is the exit value of the echo command.

  Correct Answer: C

• Question 182:

  Which of the following SQL statements will select the fields name and address from the contacts table?

  A. SELECT (name, address) FROM contacts;

  B. SELECT (name address) FROM contacts;

  C. SELECT name, address FROM contacts;

  D. SELECT name address FROM contacts;

  Correct Answer: C

• Question 183:

  Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)

  A. ~/.bashconf

  B. ~/.bashrc

  C. ~/.bashdefaults

  D. ~/.bash_etc

  E. ~/.bash_profile

  Correct Answer: BE

• Question 184:

  What benefit does an alias in bash provide?

  A. It provides faster lookups for commands in the system directory.

  B. It creates a local copy of a file from another directory.

  C. It hides what command you are running from others.

  D. It allows a string to be substituted for the first word of a simple command.

  Correct Answer: D

• Question 185:

  What output will the command seq 10 produce?

  A. A continuous stream of numbers increasing in increments of 10 until stopped.

  B. The numbers 1 through 10 with one number per line.

  C. The numbers 0 through 9 with one number per line.

  D. The number 10 to standard output.

  Correct Answer: B

• Question 186:

  What is the purpose of the file /etc/profile?

  A. It contains the welcome message that is displayed after login.

  B. It contains security profiles defining which users are allowed to log in.

  C. It contains environment variables that are set when a user logs in.

  D. It contains default application profiles for users that run an application for the first time.

  Correct Answer: C

• Question 187:

  What keyword is missing from this code sample of a shell script?

  ____ i in *.txt; do

  echo $i

  done

  A. for

  B. loop

  C. until D. while

  Correct Answer: A

• Question 188:

  When the command echo $$ outputs 12942, what is the meaning of 12942?

  A. It is the process ID of the echo command.

  B. It is the process ID of the current shell.

  C. It is the process ID of the last command executed.

  D. It is the process ID of the last command which has been placed in the background.

  Correct Answer: B

• Question 189:

  After issuing:

  function myfunction { echo $1 $2 ; }

  in Bash, which output does:

  myfunction A B C

  Produce?

  A. A B

  B. A B C

  C. A C

  D. B C

  E. C B A

  Correct Answer: A

• Question 190:

  What output will the following command sequence produce?

  echo '1 2 3 4 5 6' | while read a b c; do

  echo result: $c $b $a;

  done

  A. result: 3 4 5 6 2 1

  B. result: 1 2 3 4 5 6

  C. result: 6 5 4

  D. result: 6 5 4 3 2 1

  E. result: 3 2 1

  Correct Answer: A