Oracle Oracle Certifications 1Z0-100 Questions & Answers

• Question 11:

  Which statement correctly describes the requisite PAM control flag? (Choose the best answer.)

  A. requisite flagged modules are ignored if they fail

  B. requisite flagged modules must be successfully checked for authentication to succeed. If a requisite module checks fails, the user is notified immediately with a message reflecting the first failed required or requisite module

  C. requisite items only play a role when no other modules of that module type have succeeded or failed. In that case, the success or failure of a requisite flagged module determines the overall PAM authentication for that module type

  D. requisite flagged modules must be successfully checked for authentication to succeed. If a requisite module checks fails, the user is not notified until all other modules of the same module's type have been checked

  Correct Answer: B

  Four types of control flags are defined by the PAM standard: required — the module must be successfully checked in order to allow authentication. If a required module check fails, the user is not notified until all other modules of the same module type have been checked. requisite — the module must be successfully checked in order for the authentication to be successful. However, if a requisite module check fails, the user is notified immediately with a message reflecting the first failed required or requisite module. sufficient — the module checks are ignored if it fails. But, if a sufficient flagged module is successfully checked and no required flagged modules above it have failed, then no other modules of this module type are checked and the user is authenticated. optional — the module checks are ignored if it fails. If the module check is successful, it does not play a role in the overall success or failure for that module type. The only time a module flagged as optional is necessary for successful authentication is when no other modules of that type have succeeded or failed. In this case, an optional module determines the overall PAM authentication for that module type.

  Reference: http://www.unix-info.org/RH_Guid.80/rhl-rg-en-8.0/s1-pam-control-flags.html

• Question 12:

  What is the purpose of setting USERCTL=yes In an interface configuration file located in /etc/sysconfig/ network-scripts? (Choose the best answer.)

  A. to allow a non-root user to bring a network interface up or down using the ifup and ifdown commands

  B. to allow a non-root user to bring a network interface up or down using the ifconfig command

  C. to allow a non-root user to bring a network interface up or down using the ethtool command

  D. to allow a non-root user to bring a network interface up or down using the ifup, ifdown, and ifconfig commands

  Correct Answer: D

• Question 13:

  Which three statements are true about the Oracle Linux Multiple Device Driver (MD)? (Choose three.)

  A. RAID devices can only be built on disk partitions

  B. It can be configured to have spare devices

  C. It supports striping, mirroring, and a combination of striping and mirroring

  D. It includes snapshot functionality

  E. It can be used to mirror the root filesystem

  Correct Answer: BCD

• Question 14:

  An Oracle Linux system has not been updated for a while and the currently running kernel is three

  releases behind the most recent kernel release.

  Each released kernel fixed several problems, totaling 11 bug fixes.

  You are about to update this kernel using this command:

  

  How does Ksplice Uptrack apply these updates? (Choose the best answer.)

  A. It downloads three updates, clones the running kernel in memory, applies the updates in one single atomic update, and uses Kexec to activate the updated kernel

  B. It downloads 11 updates and applies them one by one to the running kernel

  C. It downloads 11 updates and applies them in a single transaction to the running kernel

  D. It downloads three updates and applies them in a single transaction to the running kernel

  Correct Answer: B

• Question 15:

  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

  Correct Answer: CD

• Question 16:

  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

  Correct Answer: B

• Question 17:

  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

  Correct Answer: ABD

• Question 18:

  What is the purpose of executing 1vconvert 璵1 ...? (Choose the best answer.)

  A. to detach a copy from a mirrored logical volume

  B. to reattach a detached copy back to its original logical volume

  C. to add an additional copy to an already mirrored logical volume

  D. to convert a linear logical volume into a mirrored logical volume

  E. to convert a mirrored logical volume into a linear logical volume

  Correct Answer: D

• Question 19:

  Which three actions may be done using the Anaconda installer when working with an Oracle Linux 6 system? (Choose three.)

  A. downgrading an installed system

  B. booting an installed system from a local drive

  C. attempting a rescue to repair problems with a partition table that prevents booting an installed system

  D. deinstalling an installed system

  E. upgrading an installed system

  Correct Answer: BCE

• Question 20:

  Which three statements are true concerning the use of keys generated by the ssh-keygen command? (Choose three.)

  A. dsa keys must be protected by a passphrase

  B. dsa keys are supported by version 2 of the ssh protocol

  C. rsa keys are supported by version 2 of the ssh protocol

  D. rsa keys are supported by version 1 of the ssh protocol

  E. dsa keys are supported by version 1 of the ssh protocol

  F. rsa keys must be protected by a passphrase

  Correct Answer: BDF