Question 4 Which of the following statements echo's true if the file /etc/hosts exists? is /etc/hosts && echo true it-f /etc/hosts then echo true ls file ietc/hosts & I echo true O Is file fetc/hosts Il echo true a Question Completion Status: 1 2 3 4 5 6 7 8 9 10 L.) > Moving to another question will save this response Question 5 Which of the following backups up the /usr/local folder using the following command if the file /etc/backup is not present? tar czf backup.data.czf /usr/local o tar czf backup.data.czf /usr/local Is /etc/backup O Is /etc/backup |I tar czf backup.data.czf /usr/local O tar czf backup.data.czf /usr/local && Is /etc/backup O Is /etc/backup && tar czf backup.data.czf /usr/local > Moving to another question will save this response. A Moving to another question will save this response Question 7 The output of the following command: if I Sa Sb]; then echo "true": else echo falsef based on a-5 and b-6 is: false O 0 o true Moving to fn a