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2021 Feb 1Z0-100 practice exam

Q1. Which four statements are true about software on the Oracle Public YUM server? 

A. It contains Oracle Linux installation ISO images. 

B. It contains Oracle Linux binary RPM packages. 

C. It contains Oracle Linux errata packages. 

D. It contains Oracle Linux source RPM packages. 

E. It contains beta Oracle Linux software packages. 

F. It does not contain Unbreakable Enterprise Kernel packages. 

Answer: B,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. 


Q2. 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 option to run firstboot was deselected during Oracle Linux installation. 

B. The system was installed with desktop graphical packages and rebooted and the firstboot utility ran successful. 

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:

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 ~]# 


Q3. Examine the commands and output when trying to start OSWatcher Black Box. 

Identify two recommended solutions to this problem. 

A. Edit the startOSWbb.sh script to specify your proffered shell, ensuring that it is started in POSIX compliance mode. 

B. Install ksh on the system, if not currently installed. 

C. Create a Symbolic link /usr/bin/ksh that points to /bin/bash. 

D. Ensure that ksh is accessible with the path /usr/bin/ksh. Create a symbolic link if necessary. 

E. Create a shell alias called /usr/bin/ksh that expands to /bin/bash. 

Answer: B,D 


Q4. 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 lists any files stored in the share2 directory in the /dev/sdc1 partition of the NFS server. 

B. It lists any files stored in the root directory in the /dev/sdc2 partition of the NFS server. 

C. It results in a permission denied error. 

D. It results in a stale NFS handle error. 

E. It produces no output. 

Answer:


Q5. Which two statements are true concerning a GUID Partition Table (GPT)? 

A. It supports named disk partitions. 

B. It supports primary and extended partitions. 

C. It supports disks greater than two terabytes. 

D. It cannot be used on the system disk. 

E. It supports only up to 16 partitions. 

Answer: A,C 

Explanation: 

not B, not E: On GUID Partition Table (GPT) hard disks, you can configure up to 128 

partitions and there is no concept of extended or logical partitions. 

Not D: You cannot boot from a GPT disk. 


Most recent 1Z0-100 actual test:

Q6. 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. 

Answer: A,C,E 

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


Q7. 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. 

Answer:


Q8. Bash is invoked as an interactive login shell. 

What is the order in which the bash configuration files are read, assuming that all the files exist in their correct location and are readable? 

A. /etc/profile, ~/ .profile 

B. /etc/profile, ~/ .bash_profile 

C. /etc/profile, ~/ .bash_profile, ~/ .bash_login, ~/ .profile 

D. /etc/profile, ~/ .bash_profile, ~/ .profile, ~/ .bash_login 

Answer:

Explanation: When Bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if that file exists. After reading that file, it looks for ~/.bash_profile, ~/.bash_login, and ~/.profile, in that order, and reads and executes commands from the first one that exists and is readable. The --noprofile option may be used when the shell is started to inhibit this behavior. 

When a login shell exits, Bash reads and executes commands from the file ~/.bash_logout, if it exists. 


Q9. Which two statements correctly describe the type of Information and the behavior of files in the proc filesystem on Oracle Linux 6? 

A. It is not possible to write to any file in the proc filesystem. 

B. The /proc/cmdline file contains the parameters passed to the kernel. 

C. Each process has a directory named for the process number in the proc filesystem. 

D. The proc filesystem contains the same hardware information that is contained in the sys filesystem for backward compatibility. 

E. Each process thread has a directory named for the process thread number in the proc files/stem. 

Answer: C,D 


Q10. Examine this /etc/fstab entry: 

Identify the actions you must perform to relocate this filesystem permanently to its new mount point? 

A. 1, 2, 3, 4, 5, 6 and 7 

B. 1, 2, 3, 4, 5 and 6 

C. 1, 2, 5 and 6 

D. 1, 2, 5, 6 and 7 ^ 

E. 1, 2 and 6 

Answer: