Oracle 1Z0-100 Online Practice Questions and Exam Preparation

Oracle 1Z0-100 Online Questions & Answers

• Question 11:

  Examine the commands and output when trying to start OSWatcher Black Box.

  

  Identify two recommended solutions to this problem.

  A. Edit the startOSWbb.sh script to specify your proffered shell, ensuring that it is started in POSIX compliance mode.
  B. Install ksh on the system, if not currently installed.
  C. Create a Symbolic link /usr/bin/ksh that points to /bin/bash.
  D. Ensure that ksh is accessible with the path /usr/bin/ksh. Create a symbolic link if necessary.
  E. Create a shell alias called /usr/bin/ksh that expands to /bin/bash.
  A. Edit the startOSWbb.sh script to specify your proffered shell, ensuring that it is started in POSIX compliance mode.
  C. Create a Symbolic link /usr/bin/ksh that points to /bin/bash.

• Question 12:

  Which two are correct about the oracle-rdbms-server-11gR2-preinstall and oracle-validated RPMs? (Choose two.)

  A. They are only available to Oracle Premium Support customers
  B. They contain a number of other RPMS that are required for a successful Oracle database product installation
  C. They have dependencies on a number of other RPMS that are required for a successful Oracle database product installation
  D. The oracle-validated RPMS if used, must be installed before installing an Oracle database product
  E. The oracle-validated RPMS if used, must be installed after installing an Oracle database product
  C. They have dependencies on a number of other RPMS that are required for a successful Oracle database product installation
  D. The oracle-validated RPMS if used, must be installed before installing an Oracle database product

• Question 13:

  Examine the channel specification in the /etc/yum.repos.d/public-yum-016.repo file:

  # head -6 /etc/yum.repos.d/public-yum-016.repo [016_latest] Name=Oracle Linux $releasever Latest ($basearch) Baseurl=http://public-yum.oracle.com/repo/oracleLinux/OL6/latest/$basearch/ Gpgkey=http://public-yum.oracle.com/RPM-CPG-KEY-oracle-o16 Gpgcheck=1 Enabled=0

  What is the effect of the enabled=0 setting?

  A. This channel is disabled and cannot be used by YUM at all.
  B. This channel will not be used by YUM when searching for packages.
  C. By default, YUM will not use this channel but this can be overridden on the command line.
  D. This channel will not be used by YUM when it searches for packages, but YUM will check if updates exist for packages already installed from this channel.
  B. This channel will not be used by YUM when searching for packages.

  ---

  Disable YUM Repo (Repository) Disable YUM Repo Edit repo file on /etc/yum.repos.d/ as root and change enabled to 0 ## Change enabled=1 ## To enabled=0

• Question 14:

  You installed the sendmail-cf package using the yum command as shown: # yum 璝 install sendmail-cf Loaded plugins: security Setting up Install Process Resolving Dependencies - -> Running Transaction Check - - - > Package sendmail-cf.noarch 0:8.14.4-8.e16 will be installed - - > Processing Dependency: sendmail = 7.14.4-8.e16 for package: sendmail-cf-8.14.4-8.e16.noarch - - > Running transaction check - - > Package sendmail.x86_64 0:8.14.4-8.e16 will be installed - - > Finished Dependency Resolution Dependency Resolved What is the outcome of the YUM command?

  

  # yun y remove sendmail

  A. It fails with an error because the sendmail-cf package depends on the package being removed.
  B. It succeeds and removes both the sendmail and sendmail-cf packages.
  C. It succeeds and only removes the sendmail package.
  D. It removes the sendmail packages and raises a warning about the sendmail-cf package, which depends on the package being removed.
  E. It removes the sendmail package and prompts you for the option to remove the sendmail-cf package.
  D. It removes the sendmail packages and raises a warning about the sendmail-cf package, which depends on the package being removed.

• Question 15:

  Which two statements are true regarding the use of the ssh-agent and ssh-add commands?

  A. The ssh-agent is used to hold private keys.
  B. The ssh-add command may ask for a passphrase each time the same key is required by the same user in the same shell.
  C. The ssh-agent is used to hold only public keys.
  D. The ssh-add command asks for the passphrase only the first time a key is required by the same user in the same shell.
  E. The ssh-add command retries the most recently saved passphrase if multiple key files are used.
  A. The ssh-agent is used to hold private keys.
  D. The ssh-add command asks for the passphrase only the first time a key is required by the same user in the same shell.

  ---

  A (not C): If you want to omit passphrase and password entry when you are using Solaris Secure Shell, you can use the agent daemon. Use the ssh-agent command at the beginning of the session. Then, store your private keys with the agent by using the ssh-add command.

  D: Add your private key to the agent daemon.

  The ssh-add command adds your private key to the agent daemon so that subsequent Secure Shell activity does not prompt you for the passphrase.

  myLocalHost% ssh-add

  Enter passphrase for /home/johndoe/.ssh/id_rsa:

  Identity added: /home/johndoe/.ssh/id_rsa(/home/johndoe/.ssh/id_rsa) myLocalHost%

• Question 16:

  Examine the extract of the /etc/nologin file and the /etc/pam.d/login file on server1:

  [root@server1 ~] # cat /etc/nologin bob smith [root@server1 ~] # cat /etc/pam.d/login

  account required pam_nologin.so account include system-auth

  Which statement is true about users?

  A. Only the root user can log in to the system.
  B. Only users root bob and smith would be unable to log in to the system.
  C. All users, including the root user, would be permitted to log in to the system.
  D. All users, including the root user, would be unable to log in to the system.
  A. Only the root user can log in to the system.

  ---

  auth required pam_nologin.so -- This is the final authentication step. It checks whether the /etc/nologin file exists. If it exists and the user is not root, authentication fails.

  *

  The /etc/nologin file contains the message displayed to users attempting to log on to a machine in the process of being shutdown.

  *

  the login program defines its service name as login and installs the /etc/pam.d/login PAM configuration file.

• Question 17:

  Which two statements are true concerning OpenSSH configuration files? (Choose two.)

  A. The /etc/ssh/ssh_config file is the global configuration file for the sshd server daemon
  B. If user harhest has an ssh configuration file called /home/harhest/.ssh/config, then this overrides the /etc/ssh/ssh_config file for OpenSSH sessions used by harhest
  C. Copying the /harhest/.ssh/known_hosts file from user harhest on hosta to the /jopam/.ssh/known_hosts file for user jopam on hostb, permits harhest to use OpenSSH commands to access the jopam account without supplying a password
  D. An ssh client uses either id_dsa.pub or id_rsa.pub to authenticate itself without a password, to an ssh server, which checks them into the target users' authorized_keys file
  B. If user harhest has an ssh configuration file called /home/harhest/.ssh/config, then this overrides the /etc/ssh/ssh_config file for OpenSSH sessions used by harhest
  D. An ssh client uses either id_dsa.pub or id_rsa.pub to authenticate itself without a password, to an ssh server, which checks them into the target users' authorized_keys file

• Question 18:

  Examine the command on its output:

  [root@FAROUT ~] # modprobe 璿 nfs

  Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/nfs_common/nfs_acl.ko insmod /lob/ modules/2.6.39

  100.0.12.e16uek.x86_64/kernel/net/sunrpc/auth_gss/auth_rpcgss.ko Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/fscache/fscache/ko Insmod /lib/modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/locked.ko Insmod /lib/

  modules/2.6.39-100.0.12.e16uek.x86_64/kernel/fs/nfs/nfs.ko

  Which two statements are true about the modprobe command?

  A. It will load the nfs module if all the modules upon which it depends have been loaded.
  B. It displays the dependency resolution for the nfs module and loads all the modules upon which nfs depends before loading the nfs module.
  C. It verifies that the nfs module and all other modules that depend on the nfs module are installed.
  D. It displays the dependency resolution that would occur if the nfs module were to be loaded using modprobe nfs.
  E. It only loads the nfs module if all the modules upon which it depends have not been loaded yet.
  A. It will load the nfs module if all the modules upon which it depends have been loaded.

  ---

  Reference: http://redhat.activeventure.com/8/customizationguide/ch-kernel-modules.html (kernel module utilities)

• Question 19:

  Which three statements are true about HugePages? (Choose three.)

  A. The number of HugePages is defined in /etc/security/limits.conf
  B. The number of HugePages is controlled by a Linux kernel parameter
  C. HugePages are never swapped to disk
  D. HugePages usage reduces page table overhead
  E. The number of HugePages is controlled by Oracle database parameters
  A. The number of HugePages is defined in /etc/security/limits.conf
  B. The number of HugePages is controlled by a Linux kernel parameter
  D. HugePages usage reduces page table overhead

• Question 20:

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

  A. The /etc/passwd file contains hashed passwords for each user.
  B. The /etc/shadow file contains hashed passwords for each user.
  C. The GECOS field in /etc/passwd file may be empty.
  D. The /etc/group file contains the group name and the hashed group password.
  B. The /etc/shadow file contains hashed passwords for each user.

  ---

  /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