Oracle 1z0-822 - Oracle Solaris 11 Advanced System Administration

pkgrepo rebuild [-p publisher ...] -s repo_uri_or_path [--no-catalog] [--no-index]

Discards all catalog, search, and other cached information found in the repository, and then recreates it based on the current contents of the repository.

Incorrect:

Not A: pkg refresh [--full] [publisher ...]

Updates the client's list of available packages and publisher metadata for each publisher specified. If no publishers are specified, the operation is performed for all publishers.

* Syntax:

priocntl -s [-c class] [class-specific options]

[-i idtype] [idlist]

* The priocntl command displays or sets scheduling parameters of the specified process(es). It can also be used to display the current configuration information for the system's process scheduler or execute a command with specified scheduling parameters.

Processes fall into distinct classes with a separate scheduling policy applied to each class. The process classes currently supported are the real-time class, time-sharing class, interactive class, fair-share class, and the fixed priority class.

* priocntl options include:

-c

class

Specifies the class to be set. (The valid class arguments are RT for real-time, TS for time-sharing, IA for inter-active, FSS for fair-share, or FX for fixed-priority.) If the specified class is not already configured, it is automatically configured.

-s

Sets the scheduling parameters associated with a set of processes.

Signature Policy: verify

Verify that all manifests with signatures are validly signed, but do not require all installed packages to be signed.

This is the default value.

vmstat reports virtual memory statistics regarding kernel thread, virtual memory, disk, trap, and CPU activity.

* Example:

root@solaris:~# zonecfg -z zd1

Use 'create' to begin configuring a new zone.

zonecfg:zd1> create

create: Using system default template 'SYSdefault'

zonecfg:zd1> exit

zonepath cannot be empty.

Zone zd1 failed to verify

zd1: Required resource missing

Configuration not saved; really quit (y/[n])? n

zonecfg:zd1> verify

zonepath cannot be empty.

zd1: Required resource missing

zonecfg:zd1> set zonepath=/zones/zd1

zonecfg:zd1> exit

Note:

* anet

Automatic network interface.

The anet resource represents the automatic creation of a network resource for an exclusive-IP zone.

* DiffServ uses the 6-bit Differentiated services Field (DS field) in the IP header for packet classification purposes.

* In the Diffserv model, the marker marks a packet with a value that reflects a forwarding behavior. Marking is the process of placing a value in the packet's header to indicate how to forward the packet to the network. IPQoS contains two marker modules:

/ dscpmk – Marks the DS field in an IP packet header with a numeric value that is called the Differentiated Services codepoint, or DSCP. A Diffserv-aware router can then use the DS codepoint to apply the appropriate forwarding behavior to the packet.

/ dlcosmk – Marks the virtual local area network (VLAN) tag of an Ethernet frame header with a numeric value that is called the user priority. The user priority indicates the class of service (CoS), which defines the appropriate forwarding behavior to be applied to the datagram.

Note:

* Differentiated services or DiffServ is a computer networking architecture that specifies a simple, scalable and coarse-grained mechanism for classifying and managing network traffic and providing quality of service (QoS) on modern IP networks. DiffServ can, for example, be used to provide low-latency to critical network traffic such as voice or streaming media while providing simple best-effort service to non-critical services such as web traffic or file transfers.

* IPQoS, included in Solaris, includes the following modules, which are part of the Differentiated Services (Diffserv) architecture that is defined in RFC 2475:

Classifier

Meter

Marker

IPQoS adds the following enhancements to the Diffserv model:

Flow-accounting module

802.1D datagram marker

C: You can use the scheduling-class property in zonecfg to set the scheduling class for the zone.

D: When you explicitly set the cpu-shares property, the fair share scheduler (FSS) will be used as the scheduling class for that zone. However, the preferred way to use FSS in this case is to set FSS to be the system default scheduling class with the dispadmin command. That way, all zones will benefit from getting a fair share of the system CPU resources. If cpu-shares is not set for a zone, the zone will use the system default scheduling class.

E: You can set the scheduling class for a zone through the resource pools facility. If the zone is associated with a pool that has its pool.scheduler property set to a valid scheduling class, then processes running in the zone run in that scheduling class by default.

zonecfg subcommand info:

info zonename | zonepath | autoboot | brand | pool | limitpriv

info [resource-type [property-name=property-value]*]

Display information about the current configuration. If resource-type is specified, displays only information about resources of the relevant type. If any property-name value pairs are specified, displays only information about resources meeting the given criteria. In the resource scope, any arguments are ignored, and info displays information about the resource which is currently being added or modified.

Incorrect:

Not A: priocntl- process scheduler control

The priocntl() function provides for control over the scheduling of an active light weight process (LWP).

Not C: rctladm- display and/or modify global state of system resource controls.

The rctladm command allows the examination and modification of active resource controls on the running system.

Not D: prctl

- get or set the resource controls of running processes, tasks, and projects

The prctl utility allows the examination and modification of the resource controls associated with an active process, task, or project on the system. It allows access to the basic and privileged limits on the specified entity.

Note:

* (not A, not B, not D) The privs key contains a comma-separated list of privilege numbers that will be effective when the command or action is run.

* euid and uid contain a single user name or a numeric user ID. Commands designated with euid run with the effective UID indicated, which is similar to setting the setuid bit on an executable file. Commands designated with uid run with both the real and effective UIDs. Setting uid may be more appropriate than setting the euid on privileged shell scripts.

* egid and gid contain a single group name or a numeric group ID. Commands designated with egid run with the effective GID indicated, which is similar to setting the setgid bit on a file. Commands designated with gid run with both the real and effective GIDs. Setting gid may be more appropriate than setting guid on privileged shell scripts.

* /etc/security/exec_attr is a local database that specifies the execution attributes associated with profiles.

/etc/security/exec_attr

Locally added entries. Make sure that the shipped header remains intact.

/etc/security/exec_attr.d/*

Entries added by package installation.