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Oracle Enterprise Linux: Fundamentals Sample Questions:

1. The user smith on server1 wants to check the IP address of the machine along with the MAC
address. View the Exhibit that shows the error message received by smith during this. Which statement is true in this scenario?

A) He cannot view the IP address and MAC address of the machine because only root user can list network interfaces.
B) He can view the IP address and the MAC address by giving the absolute path of the command as /sbin/ifconfig.
C) He cannot execute the command which resides in /sbin where system binaries for root user resides.
D) He can view the IP address and the MAC address by executing the ip addr command.

2. An attempt by bob to remotely access smith's shell results in an error as follows:
[bob@server100 ~]$ ssh server200
The authenticity of host 'server200 (192.168.0.200)' cant be established.
RSA key fingerprint is 1c:6e:b7:8b:65:cc:04:e8:16:ca:7e:81:de:d6:5e:c4.
What would you infer from the error?

A) The hostname could not be mapped to an IP address.
B) The PubkeyAuthentication parameter is set to no in the /etc/ssh/ssd_config file.
C) The ssh verified that the system claiming to be server200 is server200 and not any other host.
D) This response is because ssh is unable to find server200 in the ~/.ssh/known_hosts file of server100.

3. What would be the default permissions on files and directories created by a user with umask 027?

A) Files will have 666 permissions and directories will have 777 permissions because 027 is not a valid umask.
B) Files and directories will have default permissions as of the default umask because 027 is not a valid umask.
C) Files and directories will have 000 permissions because 027 is not a valid umask.
D) Files will have 639 permissions and directories will have 750 permissions.
E) Files will have 640 permissions and directories will have 750 permissions.

4. As a user smith you executed the following command to change the default priority of the date command:
[smith@station2 ~]$ nice --10 date nice : cannot set priority : Permission denied [smith@station2 ~]$
What could be the reason for the error message?

A) smith does not have the permission to change the nice value from the default to a higher value.
B) smith does not have the execute permission on nice.
C) smith does not have the SUID bit set on nice.
D) smith does not have the permission to change the nice value from the default to a lower value.

5. The user smith issued the egrep "^[[: upper:]]" words.txt command. What does this command do?

A) displays all lines in the words.txt file that begins with an uppercase letter
B) displays all lines in the words.txt file after translating uppercase letters to lowercase
C) displays all lines in the words.txt file that contains an uppercase letter
D) displays all lines in the words.txt file after translating lowercase letters to uppercase

Solutions: