Full 1z0-100 Practice Test and 142 unique questions with explanations waiting just for you!
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Below are the topics of 1Z0-100 Exam
Candidates must know the exam topics before they start of preparation. Because it will really help them in hitting the core. Our 1Z0-100 dumps will include the following topics:
- Managing Oracle on Oracle
- Using OpenSSH
- Understanding and Configuring the Linux Boot Process and Service Administration
- Managing Linux Security
- Linux Essentials
- Describing Oracle Linux Concepts
- Managing Filesystems and Swap on Oracle Linux
- Installing and Maintaining Packages
- Managing Ksplice
- Automating Tasks
- Managing File Sharing
- Managing Storage Devices
- Managing Kernel Modules
- Monitoring and Troubleshooting Oracle Linux
- Covered in UNIX and Linux Essentials
- Understanding System Configuration options
- Installing Oracle Linux
- Managing the Network Configuration
- Managing System Logging
- Consult MAN pages or relevant documentation
- Managing Pluggable Authentication Modules (PAM)
- Managing Users and Groups
NEW QUESTION 23
Examine some of the contents of the /boot/grub/grub.com file from an Oracle Linux system:
Default=0 Timeout=5 Splashimage=(hd0, 0)/grub/splash.xpm.gz Hiddenmenu Title Oracle Linux Server (2.6.39-100.0.12.16uek.x86_64) Root (hd0, 0) Kernet /vmlinuz-2.6.39-100.0.12.e16uek.x86_64 ro root=UUIP=a4b6049b-9aa1-44b4-87cf
aebb17alcdf9 rd_NO_LUKS re_NO_LVM rd_NO_DM LANG=en_US.UTF-8 SYSFONT=1atarcycreheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us rhgb quiet numa=off Initrd /initramfs-2.6.39-100.0.12.e16uek.x86_64.img Title Oracle Linux Server (2.6.32-131.0.15.e16.x86_64) Root (hd0, 0)
Kernel /vmlinuz-2.6.32-131.0.15.e16.x86_64 ro root=UUIS=a4b6049b-9aa1-44b4-87cfaebb17a1cdf9 rd_NO_LUKS rd_NO_LVM rd_NO_LVM re_NO_MD rd_NO_DM
LANG=en_UD.UTF-8 SYSFONT=latarcyheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us
Crashkernel=auto rhgp quiet numa = off
Initrd /initramfs-2.6.32-131.0.15.e16.x86_64.img
Which three statements are true about the behavior and configuration of GRUB on this system?
- A. The hiddenmenu directive hides the GRUB menu only for 5 seconds after which it becomes visible again.
- B. Because there is an Unbreakable Enterprise Kernel installed, it must be the default kernel listed as shown by the default=0 directive.
- C. The root directive specifies an initial root filesystem, allowing access to block device modules to mount the real root filesystem on disk.
- D. Each kernel must have an initramfs that matches the version of the kernel.
- E. The initrd directive specifies the initamfs, an initial root filesystem in RAM, allowing access to block device modules to mount the real root filesystem.
- F. (hd0, 0) represents the first partition on device /dev/hd0.
- G. (hd0, 0) represents the first partition on the first drive detected by the BIOS.
Answer: C,E,F
NEW QUESTION 24
Examine the routing table:
Which three statements are true concerning the routing of IP packets?
- A. Traffic to 192.168.180.240 is routed via eth1.
- B. Traffic to 192.168.180.180 is routed via eth1.
- C. Traffic to 192.168.42.42 is routed via eth0.
- D. Traffic to 192.168.0.42 is routed via eth2.
- E. Traffic to 192.168.42.42 is routed via eth2.
- F. Traffic to 192.168.180.180 is routed via eth0.
Answer: B,D,E
NEW QUESTION 25
Which two steps should be performed to permit using SSH, SCP, or SFTP commands by the ORACLE account on the host FAROUT to the oracle account on the host WAYOUT without supplying a password?
- A. The Oracle account user on host FAROUT must add the contents of ~/oracle/.ssh/id_dsa.pub or ~/oracle/.ssh/is_rsa.pub file to the ~/oracle/.ssh/authorized_keys file on host WAYOUT.
- B. The Oracle account user on host FAROUT must set the permissions in ~/oracle/.ssh/authorized_keys file 644.
- C. The oracle account user on host FAROUT must issue an ssh-keygen command to generate public and private key files in the ~ oracle/.ssh directory FAROUT.
- D. The oracle account user on host WAYOUT must set the permissions on the ~/oracle/.ssh/authorized_keys file to 644.
- E. The oracle account user on the host WAYOUT must issue an ssh-keygen command to generate public and private key files in the ~/oracle.ssh directory on WAYOUT.
- F. The Oracle account user on host WAYOUT must add the contents of ~/oracle/.ddh/id_dsa or ~/oracle/.ssh/id_rsa.pub file to the ~/oracle/.ssh/authorized_keys file on host FAROUT.
Answer: A,C
NEW QUESTION 26
Examine these statements and their output taken right after successful install of Oracle Linux:
[root@FAROUT /] rpm -q firstboot
Firstboot -1.110.10-1.0.2.e16.x86_64
[root @FAROUT /] # chkconfig - - list firstboot
Firstboot 0:off 2:off 3:off 4:off 5:off 6;off
[root@FAROUT /] # /etc/sysconfig/firstboot
RUN_FIRSTBOOT=NO
What is the conclusion?
- A. The system was installed with desktop graphical packages and rebooted and the firstboot utility ran successful.
- B. The option to run firstboot was deselected during Oracle Linux installation.
- C. Firstboot never ran in any run level because the service is turned off for all run levels.
- D. The system was installed without selecting desktop graphical packages, thereby disabling firstboot from running.
Answer: B
Explanation:
Firstboot is set to off for all levels.
Example:
The rm command below remove or delate the firstboot file in order to make sure the firstboot
program running when we restart or reboot the Fedora machine.
[root@fedora ~]# rm /etc/sysconfig/firstboot
rm: remove regular file `/etc/sysconfig/firstboot'? y
[root@fedora ~]#
Then check and make sure that firstboot program or firstboot service is run when your Fedora
startup/boot up.
Check firstboot services
[root@fedora ~]# chkconfig --list firstboot
firstboot 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@fedora ~]#
NEW QUESTION 27
Examine this output captured on an NFS server:
# mount | grep export
/dev/sdc1 on /export type ext3 (rw)
/dev/sdc2 on /export/share2 type ext3 (rw)
# cat /etc/exports
/export (*ro)
You mounted the /export filesystem on an NFS client using the command:
# mount NFS_SERVER:/export/mnt
What is the result of listing the files in /mnt/share2 on the NFS client?
- A. It produces no output.
- B. It results in a permission denied error.
- C. It results in a stale NFS handle error.
- D. It lists any files stored in the share2 directory in the /dev/sdc1 partition of the NFS server.
- E. It lists any files stored in the root directory in the /dev/sdc2 partition of the NFS server.
Answer: E
Explanation:
Explanation/Reference:
NEW QUESTION 28
Which three statements are correct about NFSV4?
- A. It uses a single port (2049) for all client/server communications.
- B. RPC.IDMAPD is used to map a UID to its username and a GID to its group name and vice versa.
- C. It relies on the LOCKD and RPC.STATD daemons to perform file locking.
- D. It has support for filesystem quotas.
- E. The UID and GID for a particular user must be the same on both client and server to avoid file ownership problems.
Answer: B,D,E
Explanation:
Explanation
NFSv4 does not use rpcbind as the NFS server itself listens on TCP port 2049 for service requests. The mounting and locking protocols are also integrated into the NFSv4 protocol, so the lockd and rpc.statd services are also not required. These refinements mean that firewall configuration for NFSv4 is no more difficult than for a service such as HTTP.
https://docs.oracle.com/cd/E37670_01/E41138/html/ol_about_nfs.html
NEW QUESTION 29
What is the purpose of setting ONPARENT = no in an Interface configuration file located in /etc/sysconfig/ network-scripts?
- A. To prevent a master network interface from being brought up during system startup
- B. To prevent a slave network interface from being brought up during system startup
- C. To prevent a network interface from being brought up during system startup
- D. To prevent an alias network interface from being brought up during system startup
Answer: D
Explanation:
Explanation/Reference:
Explanation:
The ONBOOT directive tells the network initialization scripts not to start a given interface.
If you need to stop a virtual interface from starting when the network interfaces are initialized, you need to set ONPARENT instead of ONBOOT to no.
References:
NEW QUESTION 30
You want sendmail to deliver mail for these users:
[email protected] mailbox jsmith1
[email protected] mailbox jsmith2
[email protected] mailbox jsmith3
In which sendmail configuration database can this requirement be defined?
- A. /etc/mail/genericstable
- B. /etc/mail/userdb
- C. /etc/mail/virtusertable
- D. /etc/mail/domaintable
- E. /etc/aliases
Answer: C
Explanation:
Explanation
/etc/mail/virtusertable
This database file maps mail addresses for virtual domains and users to real mailboxes. These mailboxes can be local, remote, aliases defined in /etc/mail/aliases, or files. This allows multiple virtual domains to be hosted on one machine.
The following example demonstrates how to create custom entries using that format:
[email protected] root
[email protected] [email protected]
@example.com joe
NEW QUESTION 31
Consider the output shown:
#rpm -i sendmail-cf-8.14.4-8.e16.noarch.rpm Error: Failed dependencies: Sendmail = 7.14.4-8.e16 is needed by sendmail-cf-8.e16.noarch # rpm -i sendmail-8.14.4-8.e16.x86_64.rpm # rpm -i sendmail-cf-8.14.4-8.e16.noarch.rpm # rpm -q sendmail sendmail-cf Sendmail-8.14.4-8.e16.x86_64 Sendmail-cf-8.e16_64 Sendmail-cf-8.14.4-8.e16.noarch # rpm -e sendmail
Which statement is true about the execution of the rpm -e sendmail command?
- A. It erases the sendmail package without errors.
- B. It erases both the sendmail and sendmail-cf packages because the sendmail-cf package depends on the sendmail package.
- C. It fails with an error because the package version is not supplied on the command line.
- D. It erases the sendmail package and raises an error because the sendmail package depends on the sendmail package.
- E. It fails with an error because the sendmail-cf package depends on the sendmail package.
Answer: E
NEW QUESTION 32
Examine some rules from the /etc/rsyslog.conf file:
*.info;mail.debug;authpriv.none;cron.none/var/log/messages
uucp, news.notice/var/log/spooler
Which statement is true about the listed rules?
- A. Messages with a priority of debug or higher from the mail facility are sent to /var/log/message
- B. Only messages with a priority of debug from the mail facility are sent to /var/log/messages.
- C. Only messages with a priority of info from all facilities are sent to /var/log/messages.
- D. Only messages with a priority of notice from the news facility are sent to /var/log/spooler.
Answer: A
NEW QUESTION 33
Which three statements are true concerning filesystems supported by Oracle Linux?
- A. An ext4 filesystem can be mounted as an ext3 filesystem.
- B. The btrfs filesystem includes a volume manager.
- C. The ext3 and ext4 filesystems both support multiple journaling modes.
- D. The btrfs filesystem cannot be used for the root filesystem.
- E. An ext3 filesystem can be mounted as an ext2 filesystem.
- F. The ext4 filesystem is a copy-on-write filesystem.
Answer: B,C,E
Explanation:
Explanation
A: ext2 file systems are upgradeable to ext3 without reformatting.
C: The ext3 file system includes journaling capabilities to improve reliability and availability.
In addition to the features of ext3, the ext4 file system supports extents (contiguous physical blocks), pre-allocation, delayed allocation, faster file system checking, more robust journaling, and other enhancements.
NEW QUESTION 34
Which four statements are true about software on the Oracle Public YUM server?
- A. It does not contain Unbreakable Enterprise Kernel packages.
- B. It contains beta Oracle Linux software packages.
- C. It contains Oracle Linux errata packages.
- D. It contains Oracle Linux source RPM packages.
- E. It contains Oracle Linux installation ISO images.
- F. It contains Oracle Linux binary RPM packages.
Answer: A,C,D,F
Explanation:
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.
NEW QUESTION 35
Which two statements are true about signal handling in Oracle Linux?
- A. The kill command may send a termination signal to more than one process at a time.
- 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. All signals may be blocked by a process.
- E. The pkill command kills a process by name.
Answer: A,B
Explanation:
Explanation
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
2609
$ 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.
NEW QUESTION 36
Examine the channel specification in the /etc/yum.repos.d/public-yum-016.repo file:
What is the effect of the gpgcheck=0 setting?
- A. This channel will not be used by yum when it checks for updated packages
- B. This channel will not be used by yum when it searches for packages
- C. yum will not check if the channel metadata is up-to-date for this channel
- D. yum will not perform key verification during package installation from this channel
- E. yum will not check for dependencies when installing packages from this channel
Answer: D
NEW QUESTION 37
Which two actions should an Oracle Linux administrator perform to configure a server so that its clock is synchronized with a reference time server? (Choose two.)
- A. Run rdate at system boot to ensure that the system clock is synchronized with the reference time server
- B. Run the ntpdate daemon to update the system clock, thereby keeping it synchronized with the reference time server
- C. Run ntpd at system boot to ensure that the system clock is synchronized with the reference time server
- D. Run ntpdate at system boot to ensure that the system clock is synchronized with the reference time server
- E. Run the rdate daemon to update the system clock, thereby keeping it synchronized with the reference time server
- F. Run the ntpd daemon to update the system clock, thereby keeping it synchronized with the reference time server
Answer: C,D
NEW QUESTION 38
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