Oracle 1Z0-100 Online Practice Questions and Exam Preparation

Oracle 1Z0-100 Online Questions & Answers

• Question 71:

  Examine the ssh connection and disconnection shown:

  

  What is checked when the oracle user on the host FAROUT attempts to connect to the oracle user on the host WAYOUT on subsequent occasions? (Choose the best answer.)

  A. Hosts FAROUT and WAYOUT swap public host keys and compare them to the keys that were saved locally in the /oracle/.ssh/known_hosts file
  B. The ssh client on host FAROUT, compares the public host key supplied by host WAYOUT with the public host key that was saved in the /oracle/.ssh/known_hosts file on server FAROUT
  C. The ssh server on host WAYOUT, compares the public host key supplied by host FAROUT with the public host key that was saved in the /oracle/.ssh/authorized_keys file on server WAYOUT
  D. The ssh client on host FAROUT, compares the public host key supplied by host WAYOUT with the public host key that was saved in the /oracle/.ssh/authorized_keys file on server FAROUT
  E. The ssh server on host WAYOUT, compares the public host key supplied by host FAROUT with the public host key that was saved in the /oracle/.ssh/known_hosts file on server WAYOUT
  B. The ssh client on host FAROUT, compares the public host key supplied by host WAYOUT with the public host key that was saved in the /oracle/.ssh/known_hosts file on server FAROUT

• Question 72:

  Which three statements are true regarding the use and administration of su and sudo in Oracle Linux? (Choose three.)

  A. A user may use su to start a new shell
  B. The /etc/sudoers file may be edited to permit certain executables to be used with root privileges only if they are run on certain hosts
  C. Using su-test to switch to the test user does not run the test user's login scripts
  D. The /etc/sudoers file may be edited to prevent a user from using su to switch to another user
  E. The /etc/sudoers file may be edited to allow a use to execute certain root-owned executables with root privileges
  F. The /etc/sudoers file may be edited to prevent root from executing certain executables unless a password is provided
  B. The /etc/sudoers file may be edited to permit certain executables to be used with root privileges only if they are run on certain hosts
  E. The /etc/sudoers file may be edited to allow a use to execute certain root-owned executables with root privileges
  F. The /etc/sudoers file may be edited to prevent root from executing certain executables unless a password is provided

• Question 73:

  Examine the output of a bonded interface configuration from which one network cable has been unplugged:

  # cat /proc.net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: eth2 MII Status: up MII poling interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth1 MII status: down Link Failure Count: 1 Permanent HW addr: 00:0c:29:7b:3c:71 Slave Queue ID: 0 Slave Interface: eth2 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:0c:29:7b:3s:7b

  Which statement is true when you plug in the eth1 network cable?

  A. The status of the slave interface eth1 changes to up and is promoted to the active slave and eth2 becomes the backup slave.
  B. The status of the slave interface eth1 changes to up and becomes a second active slave.
  C. The status of the slave interface eth1 changes to up but must be manually assigned the active or backup slave role.
  D. The status of the slave interface eth1 changes to up and becomes the backup slave.
  A. The status of the slave interface eth1 changes to up and is promoted to the active slave and eth2 becomes the backup slave.

• Question 74:

  Which three statements are true about the bash shell script's capabilities and features?

  A. The s* shell variable holds the exit status of the last command executed in the foreground.
  B. The | | operator ensures that a command is run only if the command preceding the | | operator fails.
  C. If test "SMYVAR" = prod and if ["SMYVAR" *= prod ] are equivalent ways to test the value of the MYVAR variable in a shell script.
  D. If the first line of the script begins with #!/bin/sh, then the sh shell program is unable to interpret the script.
  E. The bash shell supports more than 10 command-line arguments.
  F. The andand operator ensures that a command is run regardless of the outcome of the command that preceded the andand operator.
  C. If test "SMYVAR" = prod and if ["SMYVAR" *= prod ] are equivalent ways to test the value of the MYVAR variable in a shell script.
  D. If the first line of the script begins with #!/bin/sh, then the sh shell program is unable to interpret the script.
  E. The bash shell supports more than 10 command-line arguments.

• Question 75:

  Examine this output:

  $ ftp o16.example.com

  Connected to o16.example.com (192.168.40.131)

  220 (vsFTpd 2.2.2)

  Name (o16.example.com:oracle):

  A carriage return is now entered on the keyboard and the result is shown:

  $ 30 permission denied.

  Login failed.

  ftp>

  Why is the oracle user denied access to the FTP server on the 016.example.com host?

  A. The Oracle user is listed in /etc/vsftpd/ftpusers.
  B. The oracle user is listed in /etc/vsftpd/user_list and the USERLIST_ENABLE setting is set to YES in / etc/vsftpd/vsftpd.conf.
  C. The Oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE setting is set to NO in /etc/ vsftpd/vsftpd.conf.
  D. The LOCAL_ENABLE setting is set to NO in /etc/vsftpd/vsftpd.conf.
  E. The Oracle user does not exist on the o16.example.com host.
  C. The Oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE setting is set to NO in /etc/ vsftpd/vsftpd.conf.

• Question 76:

  As root, you enter a crontab command as shown;

  [root@FAROUT cron.daily] # crontab -1 */2 * * * * vmstat 0 0 1 1-5 * iostat [root@FAROUT cron.daily] #

  Which three statements are true concerning the two cron jobs listed?

  A. The iostat command runs at midnight of every day except Sunday.
  B. The vmstat command runs twice per hour.
  C. The vmstat command runs every other hour.
  D. The vmstat command runs every second minute.
  E. All cron job output is sent to the root user's mall.
  F. All cron job output is sent to /var/log/messages.
  G. The iostat command runs at midnight on the first day of each of the first five months of the year.
  A. The iostat command runs at midnight of every day except Sunday.
  B. The vmstat command runs twice per hour.
  F. All cron job output is sent to /var/log/messages.

• Question 77:

  Which three options are available during the Anaconda installer disk partitioning setup stage for a machine with only one hard disk device?

  A. Manual resizing of existing partitions on only a single device
  B. Removal of all empty partitions only, leaving any Linux or non-Linux partitions unchanged
  C. Replacing of existing Linux partitions only and leaving any other partitions unchanged
  D. Replacing of existing non-Linux partitions only, and leaving any Linux partitions unchanged
  E. Manual resizing of existing partitions on all selected devices
  F. Removal of all existing partitions and creating new partitions to suit the install
  A. Manual resizing of existing partitions on only a single device
  C. Replacing of existing Linux partitions only and leaving any other partitions unchanged
  F. Removal of all existing partitions and creating new partitions to suit the install

  ---

  A: Shrink Current System

  Select this option to resize your current data and partitions manually and install a default Red Hat Enterprise Linux layout in the space that is freed.

  C: Replace Existing Linux System(s)

  Select this option to remove only partitions created by a previous Linux installation. This does not remove other partitions you may have on your hard drives (such as VFAT or FAT32 partitions).

  F: Replace Existing Linux System(s)

  Select this option to remove only partitions created by a previous Linux installation. This does not remove other partitions you may have on your hard drives (such as VFAT or FAT32 partitions).

  Note:

  

• Question 78:

  Which two statements are true about signal handling in Oracle Linux?

  A. The pkill command kills a process by name.
  B. A process killed with the default signal always terminates gracefully if it: does not block the kill request.
  C. The kill command sends a sigkill (signal 9) by default to the process being killed.
  D. The kill command may send a termination signal to more than one process at a time.
  E. All signals may be blocked by a process.
  B. A process killed with the default signal always terminates gracefully if it: does not block the kill request.
  D. The kill command may send a termination signal to more than one process at a time.

  ---

  D: The kill command is used to send a termination signal to the specified process or group.

  Incorrect:

  Not A: The following example shows the xscreensaver process (2609) which is to be terminated.

  $ pgrep xscreen

  $ kill 2609

  Though we use pgrep to find the PID of this process here we could have also used a PID from the output of top or ps.

  Not C: The kill command is used to send a termination signal to the specified process or group. The default termination signal is a SIGTERM (15) signal. Not E: When there a stubborn process trapping the kill command and refusing to

  terminate, the -9 (SIGKILL) signal should be used to kill the process. The -9 signal cannot be trapped by a process and ignored.

• Question 79:

  Which three statements are true about the mount command?

  A. It supports labels.
  B. By default, it can be used by an ordinary user to mount a local file system.
  C. It lists all the currently mounted filesystems, if executed without any arguments
  D. It lists only the filesystems listed in /etc/fstab if executed without any arguments.
  E. Only root can mount filesystems that are not listed in listed in /etc/fstab.
  B. By default, it can be used by an ordinary user to mount a local file system.
  C. It lists all the currently mounted filesystems, if executed without any arguments
  E. Only root can mount filesystems that are not listed in listed in /etc/fstab.

  ---

  Reference: https://access.redhat.com/site/documentation/en- US/Red_Hat_Enterprise_Linux/5/html/ Deployment_Guide/chap- Using_the_mount_Command.html

• Question 80:

  Which three statements are true configuration files and the behavior of module parameters specified in those files, in the /etc/modprobe.d directory?

  A. The files may contain options to be passed to a module only when it is a dependency of a module being inserted.
  B. The file may contain shell commands to be run instead of inserting a particular module in the kernel.
  C. The files may contain options to be passed to a module, only when it is inserted using a modprobe command.
  D. The files may contain alias names for modules.
  E. The file may contain instructions to ignore certain modules.
  F. The files may contain options to be passed to a module only when it is Inserted using an insmod command.
  A. The files may contain options to be passed to a module only when it is a dependency of a module being inserted.
  C. The files may contain options to be passed to a module, only when it is inserted using a modprobe command.
  D. The files may contain alias names for modules.

  ---

  modprobe.d - Configuration directory for modprobe

  Because the modprobe command can add or remove more than one module, due to modules having dependencies, we need a method of specifying what options are to be used with those modules (A). All files underneath the /etc/

  modprobe.d directory which end with the .conf extension specify those options as required. They can also be used to create convenient aliases (D): alternate names for a module, or they can override the normal modprobe behavior altogether

  for those with special requirements (such as inserting more than one module).

  C: options modulename option...

  This command allows you to add options to the module modulename (which might be an alias) every time it is inserted into the kernel: whether directly (using modprobemodulename or because the module being inserted depends on this

  module.