Oracle 1Z0-409 問題集

質問 1：
Match the following Regular Expression Quantifiers with their appropriate values:
1) * a) match 0 or 1 times 2) + b) match exactly n times 3) ? c) match at least n times 4) {n} d) match 0 or more times 5) {n,} e) match 1 or more times
A. 1-a, 2-e, 3-d, 4-c, 5-b
B. 1-e, 2-d, 3-a, 4-c, 5-b
C. 1-d, 2-a, 3-e, 4-b, 5-c
D. 1-d, 2-e, 3-a, 4-b, 5-c
正解：D

質問 2：
You have logged in as a normal user bob and use write and wall to chat with other users. How are you able to chat with other user terminals?
A. because the SGID bit is set on both the write and wall commands, and the group ownership is set to root
B. because the SGID bit is set on both the write and wall commands, and group ownership is set to tty
C. because the SUID bit is set on both the write and wall commands, and the group ownership is set to root
D. because the SUID bit is set on both the write and wall commands, and the group ownership is set to tty
正解：B

質問 3：
What happens when you execute the lpq command without passing any arguments?
A. It removes all the jobs available in the default queue.
B. It lists all the jobs in the default queue.
C. It removes the jobs available in all the available queues.
D. It lists the jobs in all the available queues.
正解：B

質問 4：
You want to secure the server1 server by denying root access through ssh. Which file would you edit on server1 to achieve this task?
A. /etc/ssh/sshd_config
B. ~/.ssh/rc
C. ~/.ssh/config
D. /etc/ssh/sshrc
正解：A

質問 5：
Which statement is true about the files and directories created inside the /project directory that have 2777 permissions?
A. All executables inside the /project directory will run with the effective group ID (EGID) of the group of the /project directory.
B. All files and directories will have the default group set to the primary group of the user who creates them in /project directory.
C. All files inside the /project directory will have permissions set to 2644 and the subdirectories will have them set to 2755.
D. All files and directories will have the same group as that of the /project directory.
正解：D