-d option...
Disable the specified option. The effect is to prepare the associated services (svc:/network/ipv4-
forwarding:default in the case of ipv4-forwarding) for enabling. By means of the routing-svcs
variable, the routing daemons are specified to be disabled on subsequent boot or when
routeadm -u is run.

Reference: System Administration Commands , routeadm

QUESTION: 11
A customer has multiple applications and you believe consolidation using Oracle Solaris Zones
wil help them. The customer is concerned that consolidating them all on one physic server may
cause adverse interactions between them, causing problems with functionality, security, and
performance. What are the two benefits of Zones that would explain why Zones would be a
good choice?

A. better single threaded performance
B. better software isolation
C. better hardware isolation
D. simpler VLAN management
E. simple, effective resource controls

Answer(s): B, E
Explanation:
B (not C): A zone is a virtualized operating system environment that is created within a single
instance of the Oracle Solaris operating system. Oracle Solaris Zones are a partitioning
technology that provides an isolated, secure environment for applications.

Note:
* When you create a zone, you produce an application execution environment in which
processes are isolated from the rest of the system. This isolation prevents a process that is
running in one zone from monitoring or affecting processes that are running in other zones.
Even a process running with root credentials cannot view or affect activity in other zones. A
zone also provides an abstract layer that separates applications from the physical attributes of
the machine on which the zone is deployed. Examples of these attributes include physical
device paths and network interface names. The default non-global zone brand in the Oracle
Solaris 11.1 release is the solariszone.

By default, all systems have a global zone. The global zone has a global view of the Oracle
Solaris environment that is similar to the superuser (root) model. Al other zones are referred to
as non-global zones. A non-global zone is analogous to an unprivileged user in the superuser
model. Processes in non-global zones can control only the processes and files within that zone.
Typically, system administration work is mainly performed in the global zone. In rare cases
where a system administrator needs to be isolated, privileged applications can be used in a
non-global zone. In general, though, resource management activities take place in the global
zone.

Reference: Oracle Solaris 11.1 Information Library, Oracle Solaris Zones Overview

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