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Oracle 1z0-100 Exam Practice Questions (P. 2)

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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?
  1. A
    Passwords are not required and no ssh-keygen is required either. Only passphrase are required.
  2. B
    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.
  3. C
    The ssh daemon does not ask for a password before starting or stopping the sshd service.
  4. D
    Client users whose keys are not in the authorized_keys file on the client are unable to use passwords to authenticate themselves to the server.

Correct Answer:
B
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).

Question #7
Which four statements are true about software on the Oracle Public YUM server?
  1. A
    It contains Oracle Linux installation ISO images.
  2. B
    It contains Oracle Linux binary RPM packages.
  3. C
    It contains Oracle Linux errata packages.
  4. D
    It contains Oracle Linux source RPM packages.
  5. E
    It contains beta Oracle Linux software packages.
  6. F
    It does not contain Unbreakable Enterprise Kernel packages.

Correct Answer:
BCDF
The Oracle public yum server offers a free and convenient way to install the latest Oracle Linux packages as well as packages from the Oracle VM installation media via a yum client.
Oracle provides all errata and updates for Oracle Linux via the Public Yum service, which includes updates to the base distribution, but does not include Oracle- specific software.
F: By default, all new installations of Oracle Linux 6 Update 5 are automatically configured to use the public yum update service. If you subsequently register the system with ULN, the public yum service is automatically disabled.

Question #8
This MDADM output:

Which two aspects can be determined from this output?
  1. A
    A device failed and has been removed from this RAID set.
  2. B
    It is no longer possible to write to this RAID set.
  3. C
    Read and write performance is no longer optimal on this RAID set.
  4. D
    This RAID set was built without a spare device.
  5. E
    Only Write performance is no longer optimal on this RAID set.

Correct Answer:
AD

Question #9
Examine the command on its output:
[root@FAROUT ~] # modprobe v 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?
  1. A
    It will load the nfs module if all the modules upon which it depends have been loaded.
  2. B
    It displays the dependency resolution for the nfs module and loads all the modules upon which nfs depends before loading the nfs module.
  3. C
    It verifies that the nfs module and all other modules that depend on the nfs module are installed.
  4. D
    It displays the dependency resolution that would occur if the nfs module were to be loaded using modprobe nfs.
  5. E
    It only loads the nfs module if all the modules upon which it depends have not been loaded yet.

Correct Answer:
AB
References:

Question #10
What is the main advantage of the Oracle Unbreakable Enterprise Kernel compared with the Red Hat compatible kernel?
  1. A
    It is more secure and, therefore, more difficult to hack.
  2. B
    It has a lower Mean Time Between Failures.
  3. C
    It provides higher availability for applications by reducing Mean Time to Recovery.
  4. D
    It scales better for more CPUS, memory, and Infiniband network connections.

Correct Answer:
D
The Unbreakable Enterprise Kernel, for those who want to leverage the latest features from mainline Linux and boost performance and scalability.
The Red Hat Compatible Kernel, for those who prefer strict Red Hat kernel ABI (kABI) compatibility.

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