LX0-104 무료 덤프문제 온라인 액세스

What is true regarding TCP port 23?

• A.Port 23 is the well known port for the rlogin service which is SSL secured by default.
• B.Port 23 is the well known port for the SSH service which provides secure logins.
• C.Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.
• D.Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

• A.ssh-agent
• B.sshd
• C.ssh-keygen
• D.ssh-add

To prevent a specific user from scheduling tasks with at, what should the administrator do?

• A.Add the specific user to /etc/at.deny file.
• B.Run the following: atd --deny [user].
• C.Add the specific user to nojobs group.
• D.Add the specific user to /etc/at.allow file.
• E.Add the specific user to [deny] section in the /etc/atd.conf file.

Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?

• A.FROM
• B.WHERE
• C.CASE
• D.IF

What is true about UIDs and GIDs?

• A.The number space is split up. UIDs usually reside in the range from 0 to 32767 while GIDs reside in the range from 32768 to 65535.
• B.The first four digits of each UID are the GID of the primary group of that user.
• C.There are distinct number spaces for UIDs and GIDs, i.e. the same number may be used as both UID and a GID.
• D.The GID of a group is always the sum of the UIDs of its members.
• E.UIDs and GIDs share a common number space. Each time a new user or group is created, the next free ID is assigned.