1Z0-460 Online Practice Questions and Answers

Correct Answer: A

* A permission of "2755" for a directory means that everyone has read and execute permission, while the

file owner and members of the file's group additionally have write permission. And any files or

subdirectories created in that directory will inherit the parent directory's group id.

Incorrect:

Not D: chmod 2775 is a valid command.

Correct Answer: ACE

A: The Unbreakable Enterprise Kernel Release 2 is Oracle's second major release of its heavily tested and optimized operating system kernel for Oracle Linux 5 and Oracle Linux 6.

C: Oracle claims that the Unbreakable Enterprise Kernel is compatible with RHEL, and Oracle middleware and third-party RHEL-certified applications can be installed and run unchanged on Unbreakable Enterprise Kernel.

E: Oracle ASMlib is included by default

Incorrect:

Not B: Unbreakable Enterprise Kernel is available for x86-64 servers.

Correct Answer: ABD

SELinux has three modes:

Enforcing: SELinux policy is enforced. SELinux denies access based on SELinux policy rules. Permissive:

SELinux policy is not enforced. SELinux does not deny access, but denials are logged for actions that

would have been denied if running in enforcing mode. Disabled: SELinux is disabled. Only DAC rules are

used.

Correct Answer: A

*

Use the sar -q command to report the following information:

The Average queue length while the queue is occupied.

The percentage of time that the queue is occupied.

*

The following list describes the output from the -q option.

runq-sz The number of kernel threads in memory that are waiting for a CPU to run. Typically, this value should be less than 2. Consistently higher values mean that the system might be CPU-bound.

%runocc

The percentage of time that the dispatch queues are occupied.

swpq-sz

Swap queue of processes for the sar command.

%swpocc

Swap queue of processes for the sar command.

Correct Answer: AD

A (not C): ASMLib is an optional support library for the Automatic Storage Management feature of the

Oracle Database.

ASMLib allows an Oracle Database using ASM more efficient and capable access to the disk groups it is

using.

D (not B): The Oracle ASMLib kernel driver is now included in the Unbreakable Enterprise Kernel. No

driver package needs to be installed when using this kernel.

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: AD

Oracle Enterprise Manager Ops Center 12c is a foundational offering in the Oracle Enterprise Manager 12c solution. It introduces unique capabilities to strengthen Oracle Enterprise Manager 12c's ability to establish, manage, and support enterprise quality clouds delivered in an Infrastructure-as-a-Service model. With the launch of Oracle Enterprise Manager Ops Center 12c, Oracle Systems' customers utilizing SPARC, X86, Oracle Solaris, Oracle Linux (A), Oracle ZFS Storage Appliance, Oracle Switches, and both Oracle VM technologies can accelerate private cloud adoption faster at a lower cost. Oracle Enterprise Manager Ops Center 12c provides a comprehensive solution for operating system, firmware and BIOS configuration, bare metal and virtual machine provisioning, hardware fault analysis, automatic My Oracle Support service request generation (D), performance management, all while leveraging integrated diagnostics with automatic server pool resource policies.

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: C

top - display Linux tasks

The top program provides a dynamic real-time view of a running system. It can display system summary

information as well as a list of tasks currently being managed by the Linux kernel. The types of system

sum- mary information shown and the types, order and size of information displayed for tasks are all user

configurable and that configuration can be made persistent across restarts.

Incorrect:

Not A, Not B:

ps displays information about a selection of the active processes.

To see every process on the system using standard syntax:

ps -e

ps -ef

ps -eF

ps -ely

To see every process on the system using BSD syntax:

ps ax

ps axu

Not D: meminfo - provide information about memory

The meminfo() function provides information about virtual and physical memory particular to the calling

process. The user or developer of performance utilities can use this information to analyze system memory

allocations and develop a better understanding of the factors affecting application performance.

Correct Answer: D

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