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Oracle Linux 5 and 6 System Administration Free Sample Questions

12 free sample questions141 in the full practice test

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1z0-100 Sample Questions

  1. Question 1

    Multiple answers

    Which two statements are true concerning the installation and configuration of the bootloader by the Anaconda installer, which is then used to boot Oracle Linux?

    Answer and explanation

    Correct answers: A, E

    A, E -- Explanation:
    A (not C): Linux boot process from hard drive: 1. PC initializion phase - BIOS, POST. 2. PC starts boot loader - usually grub or lilo. 3. The bootloader locates kernel image on the hard drive. 4. The kernel decompresses and loads itself. Once finished it tries to mount the root filesystem. 5.
    When the root filesystem is mounted, /sbin/init is executed and continues booting the system using inittab and /etc/rc*.d scripts

  2. Question 2

    Multiple answers

    You want to display the value of a shell variable called service after assigning a value as shown:

    SERVICE =ACCT S

    Which two settings will display the name of the variable and its value?

    Answer and explanation

    Correct answers: B, C

    B, C -- Explanation:
    C: env - set the environment for command invocation If no utility operand is specified, the resulting environment shall be written to the standard output, with one name= value pair per line.

  3. Question 3

    Which statements is true concerning Oracle Linux configuration files for users and groups?

    Answer and explanation

    Correct answer: B

    Explanation:/etc/shadow file stores actual password in encrypted (one-way hashed) format for user's account with additional properties related to user password i.e. it stores secure user account information

  4. Question 4

    Examine these statements and their output taken right after successful install of Oracle Linux:

    [root@FAROUT /] rpm -q firstboot

    Firstboot -1.110.10-1.0.2.e16.x86_64

    [root @FAROUT /] # chkconfig - - list firstboot

    Firstboot 0:off 2:off 3:off 4:off 5:off 6;off

    [root@FAROUT /] # /etc/sysconfig/firstboot

    RUN_FIRSTBOOT=NO

    What is the conclusion?

    Answer and explanation

    Correct answer: A

    Explanation:
    Firstboot is set to off for all levels.
    Exampl The rm command below remove or delate the firstboot file in order to make sure the firstboot program running when we restart or reboot the Fedora machine. [root@fedora ~]# rm /etc/sysconfig/firstboot rm: remove regular file `/etc/sysconfig/firstboot'? y
    [root@fedora ~]#
    Then check and make sure that firstboot program or firstboot service is run when your Fedora startup/boot up.
    Check firstboot services [root@fedora ~]# chkconfig --list firstboot firstboot 0:off 1:off 2:off 3:off 4:off 5:off 6:off
    [root@fedora ~]#

  5. Question 5

    Multiple answers

    Which three settings can be controlled by using the chage breemar command as the root user, to modify the parameters in the /etc/shadow file?

    Answer and explanation

    Correct answers: A, C, E

    A, C, E -- Explanation:
    A: chage -E, --expiredate EXPIRE_DATE Set the date or number of days since January 1, 1970 on which the user's account will no longer be accessible.
    CE: You need to use chage command to setup password aging.
    The chage command changes the number of days between password changes and the date of the last password change. This information is used by the system to determine when a user must change his/her password.

  6. Question 6

    Examine this extract from the /etc/ssh/sshd_config file:

    passwordAuthentication no

    What is the effect of this parameter settings on the use of openSSH commands on both the client and server?

    Answer and explanation

    Correct answer: B

    Explanation:If you set PasswordAuthentication to no, you will no longer be able to use a login and password to authenticate and must use a login and public key instead (if PubkeyAuthentication is set to yes).

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