1Z0-460 Online Practice Questions and Answers

Correct Answer: B

Package Selection Options include:

-f [file]

Query package owning [file]

Note:

rpm -q -- What does it do?

One of the nice things about using RPM is that the packages you manage don't end up going into some

kind of black hole. Nothing would be worse than to install, upgrade, and erase several different packages

and not have a clue as to what's on your system. In fact, RPM's query function can help you get out of

sticky situations like:

*

You're poking around your system, and you come across a file that you just can't identify. Where did it come from?

*

Your friend sends you a package file, and you have no idea what the package does, what it installs, or where it originally came from.

*

You know that you installed XFree86 a couple months ago, but you don't know what version, and you can't find any documentation on it.

The list could go on, but you get the idea. The rpm -q command is what you need. If you're the kind of person that doesn't like to have more options than you know what to do with, rpm -q might look imposing. But fear not. Once you have a handle on the basic structure of an RPM query, it'll be a piece of cake.

Correct Answer: B

* Oracle Software Delivery Cloud. Here you can find downloads for the Oracle Linux Operating System, Oracle VM, and Oracle VM Templates for both Linux and Solaris.

Correct Answer: CE

Ksplice is a free software extension of the Linux kernel which allows system administrators to apply security patches to a running kernel without having to reboot the operating system (C, not A) (a technique broadly referred to as Dynamic Software Updating). It only supports patches that don't make significant semantic changes to kernel data structures. Ksplice has been implemented for Linux on the x86-32 and x86-64 architectures. It was developed by Ksplice, Inc. until 21 July 2011, when Oracle acquired Ksplice and started offering support for Oracle Linux (not D). Support for Red Hat Enterprise Linux was dropped and turned into a free 30-day trial for RHEL customers as an incentive to migrate to Oracle Linux Premier Support.

Correct Answer: B

Example: options netconsole [email protected]/eth0,[email protected]/00:1A:A0:D2:55:66

6666 => Server source port

10.0.0.1 => Server IP eth0 => Server NIC 514 => Client listening port

10.0.0.2 => Client IP 00:1A:A0:D2:55:66 => Client MAC

Correct Answer: C

Now that the certification of the Oracle Database 11g R2 with Oracle Linux 6 and the Unbreakable Enterprise Kernel has been announced, we are glad to announce the availability of oracle-rdbms-server11gR2-preinstall, the Oracle RDBMS Server 11gR2 Pre-install RPM package (formerly known as oracle-validated). Designed specifically for Oracle Linux 6, this RPM aids in the installation of the Oracle Database.

Reference: Oracle RDBMS Server 11gR2 Pre-Install RPM for Oracle Linux 6 has been released

Correct Answer: C

yum list installed [glob_exp1] [...]

List the packages specified by args. If an argument does not match the name of an available package, it is

assumed to be a shell-style glob and any matches are printed.

Incorrect:

Not A:

info

Is used to list a description and summary information about available packages

Not B:

search

This is used to find packages when you know something about the package but aren't sure of it's name. By

default search will try searching just package names and summaries, but if that "fails" it will then try

descriptions and url.

Not D: check

Checks the local rpmdb and produces information on any problems it finds.

Correct Answer: B

*

iostat - Report Central Processing Unit (CPU) statistics and input/output statistics for devices, partitions and network filesystems (NFS).

*

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.

Incorrect:

Not A: Related to kernel and processes.

*

iotop - simple top-like I/O monitor

*

iotop watches I/O usage information output by the Linux kernel (requires 2.6.20 or later) and displays a table of current I/O usage by processes or threads on the system.

*

iotop displays columns for the I/O bandwidth read and written by each process/thread during the sampling period. It also displays the percentage of time the thread/process spent while swapping in and while waiting on I/O. For each process, its I/O priority (class/level) is shown. In addition, the total I/O bandwidth read and written during the sampling period is displayed at the top of the interface.

Not C: related to RAM usage.

*

The entries in the /proc/meminfo can help explain what's going on with your memory usage, if you know how to read it.

*

High-Level Statistics MemTotal: Total usable ram (i.e. physical ram minus a few reserved bits and the kernel binary code) MemFree: Is sum of LowFree+HighFree (overall stat) MemShared: 0; is here for compat reasons but always zero. Buffers: Memory in buffer cache. mostly useless as metric nowadays Cached: Memory in the pagecache (diskcache) minus SwapCache SwapCache: Memory that once was swapped out, is swapped back in but still also is in the swapfile (if memory is needed it doesn't need to be swapped out AGAIN because it is already in the swapfile. This saves I/O)

Not D: vmstat - Report virtual memory statistics

Correct Answer: B

Correct Answer: D

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.

You can download the full Oracle Linux and Oracle VM installation media via edelivery.oracle.com/linux.

Note:

Getting Started

1.

Download and Install Oracle Linux

2.

Download and copy the appropriate yum configuration file in place, by running the following commands as root: Oracle Linux 4, Update 6 or Newer

# cd /etc/yum.repos.d # mv Oracle-Base.repo Oracle-Base.repo.disabled # wget http://public-yum.oracle.com/public-yum-el4.repo Oracle Linux 5

# cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-el5.repo Oracle Linux 6

# cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-ol6.repo Oracle VM 2

# cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-ovm2.repo

3.

Enable the appropriate repository by editing the yum configuration file

Open the yum configuration file in a text editor Locate the section in the file for the repository you plan to update from, e.g. [el4_u6_base] Change enabled=0 to enabled=1

4.

Begin using yum, for example:

yum list

yum install firefox

You may be prompted to confirm the import of the Oracle OSS Group GPG key.

Correct Answer: D

ULN is a comprehensive resource for Oracle Linux support subscribers, and offers access to Linux software patches, updates and fixes.