Free 1z0-100 sample questions

Correct answers: The Linux Loader (LILO) bootloader may be chosen for installation.; The bootloader is installed by default in the first partition of the disk.

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

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

Correct answers: echo $SERVICE; env | grep SERVICE

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.

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.

Correct answer: The /etc/shadow file contains hashed passwords for each user.

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

Correct answer: The option to run firstboot was deselected during Oracle Linux installation.

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 ~]#

Correct answers: The expiration date of the breemar account; The maximum number of days that must elapse between password changes by the user breemar before the password becomes invalid; The minimum number of days that must elapse between password changes by the user breemar

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.

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.

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.

Correct answer: Client users whose keys are not in the authorized_keys file on the server are unable to use passwords to authenticate themselves to the server.

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).