Oracle Oracle Certifications 1Z0-100 Questions & Answers

• Question 51:

  Which three Statements describe the capabilities and functions of the chkconfig command in Oracle Linux?

  A. It can be used to change the state of a service.

  B. It can be used to specify the run levels for which a service is to be activated.

  C. It can be used to list all services and their run levels-

  D. It can be used to check the status of a service to see if it is running.

  E. It can be used to add a service.

  Correct Answer: ABC

• Question 52:

  Which three statements are true concerning the use of open SSH utilities?

  A. SCP always requires a passphrase to be used.

  B. SCP permits copies between two remote hosts.

  C. SFTP permits transfers between two remote hosts.

  D. SSH may be used to execute a single command on a remote host instead of executing the login shell on the remote host.

  E. SFTP may be used to execute a command on the remote server.

  Correct Answer: BDE

• Question 53:

  Examine these configuration files: # cat /etc/auto.master /net -hosts /- auto.direct ro

  # cat /etc/auto.direct

  /nfs1 o16:/export/share1 /nfs2 -sync o16:/export/share2 /nfs o16:/export/share3

  Which mount options will automounter use to mount the filesystems listed in /etc/auto.direct?

  A. All three filesystems are mounted read-only, async.

  B. /nfs1 and /nfs3 are mounted read-only, async whereas /nfs2 mounted read-write, sync.

  C. /nfs1 and /nfs3 are mounted read-only, async whereas /nfs2 mounted read-only, sync.

  D. All three filesystems are mounted read-write, sync.

  Correct Answer: D

• Question 54:

  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.

  Correct Answer: BCE

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

• Question 55:

  You want to convert an rpm packages file into a standard format as part of a shell script and then manipulate the contents.

  Which archive format is used by rpm?

  A. cpio

  B. tar

  C. bzip2

  D. gzip

  E. zip

  Correct Answer: A

• Question 56:

  Which four statements correctly describe the contents of the sysfs filesystem?

  A. It contains kernel parameter files.

  B. It contains metadata on all block devices.

  C. It contains metadata on firmware.

  D. It contains metadata on all loaded modules in the kernel.

  E. It contains metadata on device classes.

  F. It contains metadata on system uptime.

  Correct Answer: BCDE

  Reference: https://www.kernel.org/pub/linux/kernel/people/mochel/doc/papers/ols- 2005/mochel.pdf

• Question 57:

  Examine this MDAM output: Which two aspects can be determined from this output?

  

  A. A RAID device failed and has been replaced with the hot spare.

  B. A new RAID device was just added to replace a failed one.

  C. Read and write performance is currently not optimal on this RAID set.

  D. Only write performance is currently not optimal on this raid set.

  E. An extra device was added to this RAID set to increase its size.

  Correct Answer: AE

• Question 58:

  Which three statements are true about the Oracle Linux Logical Volume Manager (LVM)?

  A. LVM supports simple, striped, mirrored, and RAID-5 Logical Volumes (LVs).

  B. A Physical Volume (PV) can be created on a disk or a disk partition.

  C. A Physical Volume (PV) can only be created on a disk partition.

  D. A Physical Volume (PV) can be resized.

  E. A Volume Group (VB) can be split into multiple Volume Groups.

  F. An LVM snapshot is read-only.

  Correct Answer: CEF

• Question 59:

  Which two actions are the required steps to prevent: non-root ssh access to the system?

  A. Ensuring that /etc/pam.d/sshd includes: account sufficient pam_nologin.so

  B. Create the /etc/nologin/login.deny file containing a single line +all

  C. Creating the /etc/nologin.allow file containing a single line root

  D. Creating the /etc/nologin file

  E. Ensuring that /etc/pam.d/sshd includes: account required pam_nologin.so

  Correct Answer: DE

  D: If the file /etc/nologin exists, only root is allowed to log in; other users are turned away with an error

  message.

  Note:

  * In some cases, the security policy may dictate additional mechanisms, such as TCP wrappers, Pluggable

  Authentication Modules (PAM), or the implementation of Security-Enhanced Linux (SELinux).

• Question 60:

  Which three statements are true concerning the use of the grub menu in Oracle Linux?

  A. All changes made using the grub editor at boot time are saved by default to /boot/grub/grub, conf.

  B. Additional parameters may be passed to the selected kernel.

  C. The initrd directive may not be changed.

  D. Existing kernel parameters may be changed.

  E. Some of the GRUB command-line functions may be password protected.

  Correct Answer: ABD

  A: GRUB requires only the file name and drive partitions to load a kernel. You can configure this information by editing the /boot/grub/grub.conf file, by using the GRUB menu, or by entering it on the command line. Incorrect: not C: If you have set a GRUB password, you must press P and enter the valid password to be able to edit the titles or change kernel boot parameters. To edit any of the root, kernel, or initrd directives, press E. To edit the kernel directive only, press A. To use the GRUB command line, press C.

  If you press E, select the root, kernel, or initrd directive, and press E to edit it.

  Not E: Grub can be password protected, but not individual functions.