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Valid 1Z0-460 Dumps with VCE and PDF for Free (Question 11 – Question 15)

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QUESTION 11
DTrace is being ported from Solaris to Oracle Linux. Which three statements are true for the DTrace tool?

A.    DTrace allows static and dynamic tracing of your applications and your kernel.
B.    DTrace tool is used to compile debug kernel modules and device drivers.
C.    DTrace allows you to dynamically define probe points on the fly.
D.    DTrace probes and probe points are usually defined by the user using scripts written in a language called D.
E.    DTrace tool is based on the strace Linux tool and includes both user and kernel strace features.

Answer: ACD
Explanation:
A: DTrace is a comprehensive dynamic tracing framework created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time.
C: Key benefits and features of DTrace on Oracle Linux include:
– /Designed to work on finding performance bottlenecks.
– /Dynamically enables the kernel with a number of probe points, improving ability to service software (Answer C).
– /Enables maximum resource utilization and application performance.
– /Fast and easy to use, even on complex systems with multiple layers of software.
D: Testers write tracing programs (also referred to as scripts) using the D programming language (not to be confused with other programming languages named “D”). The language, a subset of C, includes added functions and variables specific to tracing. D programs resemble awk programs in structure; they consist of a list of one or more probes (instrumentation points), and each probe is associated with an action. These probes are comparable to a pointcut in aspect-oriented programming.

QUESTION 12
You have executed the following commands as the root user:
# find /home | cpio –o -H tar -F [email protected]: /dev/nst0 – – rsh -command = /usr/bin/ssh
What is the purpose of issuing this command?

A.    To archive the contents of the /home directory in the tar format to a remote host system’s tape drive device /dev/nst0.
B.    To archive the contents of the /home directory in the cpio format to a remote host system’s tape device /dev/nst0.
C.    To archive the contents of the /home directory in the cpio and tar formats to a remote system’s tape drive device /dev/nst0.
D.    To extract the contents of the /home directory from the tape drive device /dev/nst0.

Answer: A
Explanation:
The cpio command is one of standard Unix backup utilities. It stands for “copy in/out”. It is much less well known and more rarely used Unix utility in comparison with tar.

QUESTION 13
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?

A.    [ol6u3_base_media]
name=Oracle Linux 6 Media
baseurl=file:///mnt/iso/OL6u3/Server
gpgcheck=1
enabled=0
B.    [ol6u3_base_media]
name=Oracle Linux 6 Media
baseurl=file:///mnt/iso/V33411-01.iso
gpgcheck=1
enabled=1
C.    [ol6u3_base_media]
name=Oracle Linux 6 Media
baseurl=file:///mnt/iso/OL6u3/Server
gpgcheck=1
enabled=1
D.    [ol6u3_base_media]
name=Oracle Linux 6 Media
baseurl=http:///mnt/iso/OL6u3/Server
gpgcheck=1
enabled=1

Answer: A
Explanation:
Not B: Specifiy the directory, not the iso file name.
Not C: Enabled should be 0, not 1.
Not D: Use “file:” not “http:” to specify the directory.

QUESTION 14
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?

A.    sosreport
B.    iostat
C.    kdump
D.    strace
E.    systemstat

Answer: A
Explanation:
sosreport – generate debugging information for this system. sosreport generates a compressed tarball of debugging information for the system it is run on that can be sent to technical support reps that will give them a more complete view of the overall system status.
Incorrect:
Not B: The iostat command is used for monitoring system input/output device loading by observing the time the devices are active in relation to their average transfer rates. The iostat command generates reports that can be used to change system configuration to better balance the input/output load between physical disks.
Not C: kdump.conf is a configuration file for the kdump kernel crash collection service. kdump.conf provides post-kexec instructions to the kdump kernel. It is stored in the initrd file managed by the kdump service. If you change this file and do not want to restart before it takes effect, restart the kdump service to rebuild to initrd.
Not D: strace – trace system calls and signals.

QUESTION 15
Your 32-bit i686 architecture system in registered with the Oracle Unbreakable Linux Network. RPM package example-1.0.1-1 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 is the best?

A.    # rpm -Uvh http://linix.oracle.com/rpms/i686/example-1.0.1-1.i686.rpm
B.    # yum -no-update example
C.    # yumdownloader example
D.    # yum -get example-1.0.1

Answer: C
Explanation:
yumdownloader is a program for downloading RPMs from Yum repositories.


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