1Z0-105 Oracle Linux 6 Advanced System Administration

Exam Title: Oracle Linux 6 Advanced System Administration
Exam Number: 1Z0-105
Exam Price: $245.00 More on exam pricing
Format: Multiple Choice
Duration: 150
Number of Questions: 97
Passing Score: 61%
Validated Against: This exam has been validated against Oracle Linux 6.

Btrfs File System
Describe the features of the Btrfs file system
Create a Btrfs file system
Create Btrfs subvolumes and snapshots
Take a snapshot of a file in a Btrfs subvolume
Mount Btrfs subvolumes and snapshots
Defragment and resize a Btrfs file system
Add and remove devices in a Btrfs file system
Check and repair the integrity of a Btrfs file system
Convert ext file systems to Btrfs
Create a Btrfs root file system by installing OL6.3 from the UEK Boot ISO

Linux Containers (LXC)
Describe the purpose of Linux Containers
Describe container configuration parameters
Install the required Linux Container software packages
Describe Linux Container template scripts
Create a Linux Container by using the Oracle template script
Use Linux Container utilities to start and stop a container
Use additional Linux Container utilities
Install an Oracle VM template as a base environment
Create a Linux Container from an existing rootfs

Oracle Cluster File System 2
Describe the purpose of Oracle Cluster File System 2 (OCFS2)
Describe the features of OCFS2
Prepare for an OCFS2 configuration
Install the OCFS2 software packages
Configure kernel settings for OCFS2
Configure the cluster layout
Describe the OCFS2 heartbeat
Configure and start the O2CB cluster service
Create an OCFS2 volume
Mount an OCFS2 volume
Use OCFS2 tuning and debugging utilities

Core Dump Analysis
Describe kexec and kdump
Configure kdump to capture kernel vmcore dump
Describe kernel parameters that can cause a panic
Use magic SysRq keys
Use the crash utility for analyzing core dumps

Managing Storage
Describe and configure access control lists
Configure and maintain encrypted block devices
Describe and configure disk quotas
Describe and use the kpartx utility

Configuring and Maintaining BIND
Describe nameserver types
Configure and maintain a cache-only nameserver
Describe and configure Zone Files
Use the rndc utility

Miscellaneous
Install Oracle Linux by using the Kickstart installation method
Boot into Rescue mode to correct boot problems

Virtualization with Linux
Describe virtualization and its benefits
Explain how Linux as a virtual guest supports the different virtualization modes
Outline the support for Linux as a guest operating system (OS) with various virtualization solutions
Describe the KVM hypervisor
Use the libvirt tools to create and manage KVM virtual guests

Control Groups (cgroups)
Describe the purpose of control groups
Describe control group subsystems and parameters
Describe the control group hierarchy model
Configure control groups using the /etc/cgconfig.conf file
Use the lssubsys utility
Use the cgcreate and cgdelete utilities
Use the cgset utility
Assign tasks to control groups
Use the cgrules.conf file
Enable PAM to use control group rules
Obtain information about control groups and parameters

Advanced Storage Administration
Configure an iSCSI target
Use tgtadm, tgt-admin, and tgt-setup-lun utilities
Configure an iSCSI software initiator
Use the iscsiadm utility
Describe Device Mapper Multipathing
Use the mpathconf and multipath utilities
Configure iSCSI multipathing
Describe Udev
Create Udev rules
Use the udevadm utility

Advanced Software Package Management
Describe the contents of an RPM package
Perform a binary RPM build
Use the tools to perform package maintenance with Yum
Manage the Yum cache and Yum history
Install and use Yum plug-ins
Describe and use the programs offered by PackageKit

Dynamic Tracing with Dtrace
Describe the purpose of DTrace
Enable DTrace on Oracle Linux
Describe and view DTrace providers and probes
Use the D programming language to enable probes and corresponding actions
No objective….
Use built-in D variables
Use built-in D functions
Create D scripts to explore your system

Configuring Networks and Network Services
Access Samba shares
Configure and maintain a DHCP server
Configure and maintain a NIS server
Configure and maintain an OpenLDAP server
Describe and configure Kerberos authentication
Describe the Postfix and Sendmail SMTP Servers
Objective removed from blueprint

Managing SELinux
Describe SELinux concepts
Use the SELinux Administration GUI
Describe and configure SELinux modes, policies, Booleans, and contexts
Use SELinux utilities

XFS File System
Describe XFS for Oracle Linux
Create an XFS file system
Use the xfs_growfs utility
Use the xfs_admin utility
Enable disk quotas on an XFS file system
Use the xfs_quota utility
Set project quotas
Use the xfsdump and xfsrestore utilities
Use XFS file system maintenance utilities

Managing Web and Email Services
Describe the Apache HTTP Web Server
Configure Apache directives
Configure Apache containers
Configure Apache virtual hosts
Describe email program classifications: MUA, MTA, MDA
Describe email protocols: SMTP, POP, IMAP
Configure and maintain a Postfix or Sendmail client configuration

QUESTION 1
Which single statement is true for creating a labeled filesystem in RAID-1 on devices /dev/sdc and /dev/sdd?

A. mkfs –t btrfs –d raid1 /dev/sdc /dev/sdd
B. mkfs.btrfs –d raid1 –L Btrfs /dev/sdc /dev/sdd
C. mkfs.btrfs –r raid1 –L Btrfs /dev/sdc /dev/sdd
D. mkfs.btrfs –L Btrfs /dev/sdc /dev/sdd

Answer: B
Reference:https://www.howtoforge.com/a-beginners-guide-to-btrfs

QUESTION 2
Which statement describes the default network set upby an Oracle template script?

A. The container is isolated from the network.
B. Avethdevice is added to libvirt’svirbr0bridge.
C. Amacvlandevice enables DHCP from the host’s network.
D. A private interface is routed to Open vSwitch.

Answer: B

Explanation:
By default, the lxc-oracle template script sets up networking by setting up a veth bridge. In this mode, a
container obtains its IP address from the dnsmasq server that libvirtd runs on the private virtual bridge network
(virbr0) between the container and the host. The host allows a container to connect to the rest of the network by
using NAT rules in iptables, but these rules do not allow incoming connections to the container. Both the host
and other containers on the veth bridge have network access to the container via the bridge.

QUESTION 3
What statement describes the iSCSI client system’s iSCSI database?

A. The client maintains a text formatted file,/etc/iscsi/iscsi.db.
B. The client can use either a local database in the form of a Berkeley DB formatted file in/etc/iscsior a distributed database in the form of Internet StorageNaming Service (iSNS) as its database. It is a decision for the System and StorageAdministration team.
C. The client maintains a local database in the form of a directory tree structure in/var/lib/iscsi.
D. The client maintains a local database in the form of a directory tree structure in/etc/iscsi/db.

Answer: A

QUESTION 4
Which two statements are true aboutOCFS2heartbeats?

A. A local heartbeat is started during cluster online and stopped during cluster offline commands.
B. Only one heartbeat mode can be active at a time.
C. A local heartbeat refers to disk heartbeatingon all shared devices.
D. A local heartbeat is strongly recommended for clusters having a large number of mounted file systems.
E. A list of heartbeat devices is stored in the/etc/sysctl.conffile.
F. Heartbeat mode can be configured at the file system level.

Answer: A,C

Reference:https://oss.oracle.com/projects/ocfs2/dist/documentation/v1.8/ocfs2-1_8_2-manpages.pdf

QUESTION 5
Examine the contents of the /etc/ocfs2/cluster.conf file: node:
name = exam2 cluster = mycluster number = 0
ip_address = 192.168.56.106 ip_port = 7777
node:
name = exam3 cluster = mycluster number = 1
ip_address = 192.168.56.107 ip_port = 7777
clustr:
name = mycluster heartbeat_mode = local node_count = 2
Identify the minimum number of commands issued, in the correct order, to create this file.
1. o2cb add-cluster –heartbeat_mode local mycluster
2. o2cb add-node –ip 192.168.56.107 –number 1 mycluster exam3
3. o2cb add-cluster mycluster
4.o2cb add-node –ip 192.168.56.106 — number 0 mycluster exam2
5. o0cb config-cluster –node_count 2 mycluster
6. o2cb configure

A. 3, 4, 2
B. 6, 4, 2, 3
C. 6, 4, 2, 5, 3
D. 6, 1, 4, 2
E. 1, 4, 2
F. 1, 4, 2, 5

Answer: C

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