1Z0-460 - Oracle Linux 6 Implementation Essentials Exam
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DTrace is being ported from Solaris to Oracle Linux. Which three statements are true for the DTrace tool?
DTrace allows static and dynamic tracing of your applications and your kernel.
DTrace allows you to dynamically define probe points on the fly.
DTrace probes and probe points are usually defined by the user using scripts written in a language called D.
On your Oracle Linux 6 system, you have to configure the eth0 network interface to 100 MB/sec, half duplex without trying to autonegotiate. Which command will help you configure this requirement?
# ethtool s eth0 speed 100 autoneg off duplex half
Which file system is both new and now installed by default in Oracle Linux 6 with Unbreakable Enterprise Kernel (UEK)?
The DBA tells you that the system is not overloaded but you can tell that the system us actively swapping. What command would you run to show this information to the DBA?
# vmstat 5 10
Your Oracle Linux system has two network interfaces eth0 and eth1. You have to change the netmask and the IP address of the eth1 network interface. Which configuration file would you edit to make these changes?
You have to collect data by using the OS Watcher tool to help diagnose a performance issue on your Oracle Linux system. You need to collect data every 30 seconds by using this tool and archive this data for a period of three days. Which is the OS Watcher tool option that can be used to collect this data from your system?
# ./startOSWbb.sh 30 72
You have to find out the version of bash shell package installed on your Oracle Linux system. Which yum command can help you find the version information?
# yum info bash
The crond daemon checks each command to see whether it should be run in the current ___________.
Identify the Oracle-supported source for obtaining Oracle Linux
From Oracle's eDelivery software delivery cloud
Which three statements describe the Unbreakable Enterprise Kernel (UEK)?
The UEK contains proprietary Linux Kernel enhancements only available to Oracle Linux.
Existing applications run unchanged with the UEK in place because all system libraries remain unchanged.
The UEK has ASMlib included by default.
A system administrator wants to view all running processes on the system in real time, to find out what RAM has been allocating to each process. What system command should be used?
As a root user, you executed the following command on your Oracle Linux 6 server: [[email protected]] # strace - o /tmp/diag.out sh diag.sh Which statement describes the purpose of this command?
It records the system calls, which are called by the processes when the diag.sh script runs.
Which yum command will you use if you want to find out the name of the package that has the /etc/sysconfig/nfs file?
# yum list installed | grep /etc/sysconfig/nfs
Which two statements describe Oracle ksplice?
Ksplice actively applies kernel errata updates to the running Oracle Linux kernel image.
Ksplice allows customers to remain current with their OS vulnerability patches while at the same time minimizing downtime.
You have to aggregate two network interfaces, eth0 and eth1, into a single logical interface such as bond0. Which option shows the four configuration files that need to be configured to set up this bonding?
etc/sysconfig/netwok-scripts/ifcfg-bond0 /etc/sysconfig/netwok-scripts/ifcfg-eth0 /etc/sysconfig/netwok-scripts/ifcfg-eth1 /etc/modprobe.d/bonding.conf
View the output below. As oracle user, you run the following command on your Oracle Linux 6 system: [[email protected] ~ ] $ [[email protected] ~] $ nice - - 10 ./myscript.sh &  2735 [[email protected] ~] $ nice: cannot set niceness: permission denied Why is the nice command failing?
A negative nice value can be set by the root user.
Which two commands can be used on Oracle Linux to find the routing table and default gateway information of your network?
You run the following command as the root user to set properties of a network interface (eth0): # ifconfig eth0 192.0.2.102 netmask 255.255.255.0 up Setting network interface properties with the ifconfig utility is not persistent across system reboots. Which file would you edit to make settings and to make them persist across system reboots?
Finding a directive issued by your organization listing several important CVEs (Common Vulnerability and Exposures), you find one for Linux OpenSSH (CVE-2006-5764), which might apply to your oracle Linux systems. What command would help ensure that a patch has been applied to close this vulnerability on an Oracle Linux 6 system running OpenSSH server?
rpm q - - changelog openssh | grep 5794
You have mounted an Oracle Linux 6 ISO image (v33411-01.iso) on your system in the /mnt/iso/OL6u3/Server directory. You want to use this image in your local yum repository configuration file and enable it. Which yum repository configuration file has the correct entries to use this image as a local repository?
[ol6u3_base_media] name=Oracle Linux 6 Media baseurl=file:///mnt/isso/OL6u3/Server/ gpgcheck=1 enabled=1
You have successfully installed the uptrack tool on servers you will be using ksplice kernel updates. Which two options are correct descriptions of commands you can run?
"uptrack-show": list the active Oracle Ksplice updates in your running kernel.
"uptrack-upgrade": connect to the Uptrack update server, check and apply new updates when available.
Examine the following commands: # groupadd project # mkdir /usr/share/project # chown R root.project /usr/share/project # qpasswd a scott project # qpasswd a foo project # chmod 2775 /usr/share/project Based on the commands, which statement is correct?
All members of the project group need the administrator's help to change the file permission every time users write new files in the /usr/share/project folder.
You have to collect information about your Oracle Linux 6 system, such as hardware configuration, installed software packages, configuration, and operational state send it to Oracle Support. Which tool will help you gather this information for sending it to Oracle Support?
What does the following btrfs command do? $ sudo btrfs subvolume snapshot src src-01
Creates a snapshot of the src subvolumes in src-01
The change that are made by using echo command, like the one shown in the example below, are not persistent and disappear when the system us restarted. Which file should be modified to make configuration changes across reboots? # echo www.example.com > /proc/sys/kernel/hostname
Which two statements are correct about the Oracle ASMLib library?
Oracle ASMLib is an optional support library for the Automatic Storage Management (ASM) feature.
Oracle ASMLib kernel driver is included in the Unbreakable Kernel.
You have to find the default runlevel of your Oracle Linux system. Which file will help you find this information?
The ASMlib on Linux us designed to ___________.
Make managing ASM volumes easier and provide a performance improvement over ASM volumes alone.
Identify the option with two files that are found in the /etc/sysconfig directory.
You have to mount the Oracle Linux ISO image file OracleLinux R6 U2 Server X86_64- dvd.iso to the /media/cdrom mount point. Which command will help you mount the Oracle Linux ISO image file?
# mount 0 ro, loop oracleLinux R6 U2 Server X86_64 dvd.iso /media/cdrom
Which three statements are true about the Kickstart installation method?
A Kickstart file is created for every installation.
The Kickstart Configurator can be used to create or make changes to a kickstart file.
The Kickstart method allows for unattended and more standardized installations.
Your 32-bit i686 architecture system in registered with the Oracle Unbreakable Linux Network. RPM package example -1 .0.0-1 is already installed and the application is used constantly. You want to download the latest version of the example RPM package. You do not want to install the package until you have coordinated with the program's current users. Which option will allow you to download until you have coordinated with the program's current users. Which option will allow you to download the latest version of the RPM package, but not install it?
# yumdownloader example
As user bob, you have logged in to the system on a terminal and issued the following command to make the top command run in the background. [[email protected] - ] top& You exit from the terminal and log back as bob into the system at the same terminal. How is the background job affected?
The background job is deleted from the job pool and does not get listed using jobs command.
Examine the following kernel boot command-line parameters. kernel /vmlinuz-2.6.32-220.e16 ro root = /dev/VolGroup00/LogVol00 init = /bin/bash ether = 0, 0, eth1 rhgb quiet Which two statements are true?
Boot argument ether will force probing for a second ethernet card (NIC).
It will not probe for any hard drive.
Which two utilities can you use to manipulate the partition table on Oracle Linux?
You want to allow multiple users the write access to files within the same directory, in addition, you want all the new files created in this directory to be of the required group instead of the primary ID of the user who creates the file. How do you accomplish this?
Set the setgid bit on the directory.
Identify the two kernels that are shipped with Oracle Linux 6.
Unbreakable Enterprise Kernel
Red Hat Compatible Kernel
Which two features are available with the Unbreakable kernel R2, but not with the Red Hat Compatible Kernel?
Oracle Clusterware for Linux
Up to 4-petabyte cluster volumes with OCFS2
You want to add a README.txt file in the home directory of every new user that you create by using the useradd command on your Oracle Linux system. In which directory will you place the README.txt file so that it automatically gets copied to the new user's home directory when the user is created?
Which two statements describes the capabilities of Oracle Manager Ops Center product?
Oracle Enterprise Manager Ops Center can provide management services for Oracle Linux servers.
Oracle Enterprise Manager Ops Center includes built-in integration with My Oracle Support with automatic servers request generation.
Which rpm command can be used to find the package that owns the /etc/rsyslog.conf file?
rpm gf /etc/rsyslog.conf
Examine the following snippet from the rsyslog.conf file. kern.crit /dev/console kern.info; kern.!err /var/adm/kernel.log What do these two rules mean?
Direct all kernel messages of the priority crit and higher to machine console. Additionally, log all kernel messages that come with priorities from info up to warning in the /var/adm/kernel.log file.
The Oracle "helper" package (RPM), formerly known as "Oracle-validated" (which helps meet prerequisites for installing Oracle software), has been renamed. What is the new name?
What happens when the following command is run? # authconfig - - passalgo = md5 - - update
It changes the user password hashing algorithm to MD5.
As a system administrator, you run the system-config-network tool and make changes to the configuration. You change the hostname and the DNS search path settings. Which two files will these changes be written into?
"/etc/sysconfig/network" and "/etc/resolv.conf" files