Free 1Z0-821 Practice Test Questions and Answers (2026) | Cert Empire Practice Questions

Use the pkg search command to search for packages whose data matches the specified pattern.

Like the pkg contents command, the pkg search command examines the contents of packages. While

the pkg contents command returns the contents, the pkg search command returns the names of

packages that match the query.

You might need to replace a disk in the root pool for the following reasons:

The root pool is too small and you want to replace it with a larger disk

The root pool disk is failing. In a non-redundant pool, if the disk is failing so that the system won't

boot, you'll need to boot from an alternate media, such as a CD or the network, before you replace

the root pool disk.

In a mirrored root pool configuration, you might be able to attempt a disk replacement without

having to boot from alternate media. You can replace a failed disk by using the zpool replace

command.

Some hardware requires that you offline and unconfigure a disk before attempting the zpool replace

operation to replace a failed disk.

For example:

# zpool offline rpool c1t0d0s0

# cfgadm -c unconfigure c1::dsk/c1t0d0

# cfgadm -c configure c1::dsk/c1t0d0

# zpool replace rpool c1t0d0s0

# zpool online rpool c1t0d0s0

# zpool status rpool

SPARC# installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk /dev/rdsk/c1t0d0s0

x86# installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c1t9d0s0

A: If the network is setup to perform automated installations, you can perform a text installation over the network by setting up an install service on the network and selecting a text installation when the client system boots. B: After a fresh install of Solaris 11 express, only the console mode is activated. To add Gnome, simply do : $ sudo pkg install slim_install This will install additional packages that are not installed by default. D: The text installer advantages over the GUI installer include: * In addition to modifying partitions, the text installer enables you to create and modify VTOC slices within the Solaris partition. F: How do I upgrade my Solaris 10 or lower systems to Solaris 11? Unfortunately, you CAN'T. There is no direct upgrade installer or other tool that will allow you to upgrade from earlier releases of Solaris to Solaris 11. This is primarily due to the vast changes in the packaging mechanism in Solaris 10.

B: Binary Signatures for Third-Party Software

The elfsign command provides a means to sign providers to be used with the Oracle Solaris

Cryptographic Framework. Typically, this command is run by the developer of a provider.

The elfsign command has subcommands to request a certificate from Sun and to sign binaries.

Another subcommand verifies the signature. Unsigned binaries cannot be used by the Oracle Solaris

Cryptographic Framework. To sign one or more providers requires the certificate from Sun and the

private key that was used to request the certificate.

C: Export law in the United States requires that the use of open cryptographic interfaces be

restricted. The Oracle Solaris Cryptographic Framework satisfies the current law by requiring that

kernel cryptographic providers and PKCS #11 cryptographic providers be signed.

crontab: you are not authorized to use cron. Sorry.

This message means that either the user is not listed in the cron.allow file (if the file exists), or the

user is listed in the cron.deny file.

You can control access to the crontab command by using two files in the /etc/cron.d directory:

cron.deny and cron.allow. These files permit only specified users to perform crontab command tasks

such as creating, editing, displaying, or removing their own crontab files.

The cron.deny and cron.allow files consist of a list of user names, one user name per line.

B: Configure the AI install server to use a static IP address and default route. D: The create-service command can set up DHCP on the AI install server. If you want to set up a separate DHCP server or configure an existing DHCP server for use with AI. The DHCP server must be able to provide DNS information to the systems to be installed. E: An automated installation of a client over the network consists of the following high-level steps: 1. The client system boots over the network and gets its network configuration and the location of the install server from the DHCP server. 2. The install server provides a boot image to the client. 3. Characteristics of the client determine which installation instructions and which system configuration instructions are used to install the client. 4. The Oracle Solaris 11 OS is installed on the client, pulling packages from the package repository specified by the installation instructions in the AI install service. G: Install the AI tool set. Use the installadm create-service command to create an AI install service. Give the service a meaningful name, and specify the path where you want the service created. Specify the source of the network boot image (net image) package or ISO file. installadm create-service [-n svcname] [-s FMRI_or_ISO] [-d imagepath] -d imagepath The imagepath is the location of the new install service. The install-image/solaris-auto- install package is installed to this location, or the specified ISO file is expanded at this location.

A: Pluggable Authentication Modules (PAM) are an integral part of the authentication mechanism for

the Solaris. PAM provides system administrators with the ability and flexibility to choose any

authentication service available on a system to perform end-user authentication.

By using PAM, applications can perform authentication regardless of what authentication method is

defined by the system administrator for the given client.

PAM enables system administrators to deploy the appropriate authentication mechanism for each

service throughout the network. System administrators can also select one or multiple

authentication technologies without modifying applications or utilities. PAM insulates application

developers from evolutionary improvements to authentication technologies, while at the same time

allowing deployed applications to use those improvements.

PAM employs run-time pluggable modules to provide authentication for system entry services.

E: The Simple Authentication and Security Layer (SASL) is a method for adding authentication support

to connection-based protocols.

Simple Authentication and Security Layer (SASL) is a framework for authentication and data security

in Internet protocols. It decouples authentication mechanisms from application protocols, in theory

allowing any authentication mechanism supported by SASL to be used in any application protocol

that uses SASL. Authentication mechanisms can also support proxy authorization, a facility allowing

one user to assume the identity of another. They can also provide a data security layer offering data

integrity and data confidentiality services. DIGEST-MD5 provides an example of mechanisms which

can provide a data-security layer. Application protocols that support SASL typically also support

Transport Layer Security (TLS) to complement the services offered by SASL.

In this Solaris release, you can use the zpool split command to split a mirrored storage pool, which

detaches a disk or disks in the original mirrored pool to create another identical pool.

After the split operation, import the new pool.

Pgrep takes a process name and return a PID.

Note: pgrep looks through the currently running processes and lists the process IDs which matches

the selection criteria to stdout. All the criteria have to match. For example, pgrep -u root sshd will

only list the processes called sshd AND owned by root.

Incorrec answers:

ps bigscript: You can’t pass a name to ps, it interprets it as arguments.

Image Packaging System (IPS) is a new network based package management system included in

Oracle Solaris 11. It provides a framework for complete software lifecycle management such as

installation, upgrade and removal of software packages. IPS also enables you to create your own

software packages, create and manage package repositories, and mirror existing package

repositories.

Oracle Solaris software is distributed in IPS packages. IPS packages are stored in IPS package

repositories, which are populated by IPS publishers.

E: The following command displays property information about the local repository.

$ pkgrepo get -s /export/repoSolaris11

SECTION PROPERTY VALUE publisher prefix solaris repository description This\ repository\ serves\ a\

copy\ of\ the\ Oracle\ Solaris\ 11\ Build\ 175b\ Package\ Repository.

repository name Oracle\ Solaris\ 11\ Build\ 175b\ Package\ Repository

repository version 4

The value of the publisher prefix specifies that solaris is to be used in the following cases:

When more than one publisher's packages are present and no publisher is specified in the package

name in the pkg command

When packages are published to the repository and no publisher is specified.

The first IP address is already in use.

Check DNS

* (A) Check whether DNS is configured on your client by verifying that a non-empty /etc/resolv.conf

file exists.

* (F) If /etc/resolv.conf does not exist or is empty, check that your DHCP server is providing DNS

server information to the client:

# /sbin/dhcpinfo DNSserv

If this command returns nothing, the DHCP server is not set up to provide DNS server information to

the client. Contact your DHCP administrator to correct this problem.

* (B) If an /etc/resolv.conf file exists and is properly configured, check for the following possible

problems and contact your system administrator for resolution:

** The DNS server might not be resolving your IPS repository server name.

** No default route to reach the DNS server exists.

STMF – Manages transactions, such as context and resources for Small Computer System Interface

(SCSI) command execution, and tracking logical unit and port providers. STMF also handles logical

unit mappings, allocating memory, recovering failed operations, enumeration, and other necessary

functions of an I/O stack.

STMF is controlled by stmfadm, and stmfadm is the majority of the commands you will be using to

administer COMSTAR (COmmon Multiprotocl Scsi TARget).

Install the packages you need for COMSTAR with iSCSI and reboot:

# pfexec pkg install storage-server

# pfexec pkg install SUNWiscsit

# shutdown -y -i6 -g0

Note: You can set up and configure a COMSTAR Internet SCSI (iSCSI) target and make it available over

the network. The iSCSI features can work over a normal Internet connection (such as Ethernet) using

the standard iSCSI protocol. The iSCSI protocol also provides naming and discovery services,

authentication services using CHAP and RADIUS, and centralized management through iSNS.

The COMSTAR target mode framework runs as the stmf service. By default, the service is disabled.

You must enable the service to use COMSTAR functionality. You can identify the service with the svcs

command. If you have not rebooted the server since installing the group/feature/storage-server

package, the service might not be enabled correctly.

Here we should use SIGTERM to terminate the process.

Note:

When no signal is included in the kill command-line syntax, the default signal that is used is –15

(SIGKILL). Using the –9 signal (SIGTERM) with the kill command ensures that the process terminates

promptly. However, the –9 signal should not be used to kill certain processes, such as a database

process, or an LDAP server process. The result is that data might be lost.

Tip - When using the kill command to stop a process, first try using the command by itself, without

including a signal option. Wait a few minutes to see if the process terminates before using the kill

command with the -9 signal.

pkgchk checks the accuracy of installed files or, by using the -l option, displays information about

package files. pkgchk checks the integrity of directory structures and files. Discrepancies are written

to standard error along with a detailed explanation of the problem.

Device c3t6d0 is not included in the RAIDZ storage pool. The other three devices are included in the

raidz pool. The data on these devices are protected.

Note: In addition to a mirrored storage pool configuration, ZFS provides a RAID-Z configuration with

either single, double, or triple parity fault tolerance. Single-parity RAID-Z (raidz or raidz1) is similar to

RAID-5. Double-parity RAID-Z (raidz2) is similar to RAID-6.

You can use the pgrep and pkill commands to identify and stop command processes that you no

longer want to run. These commands are useful when you mistakenly start a process that takes a

long time to run.

To terminate a process:

Type pgrep to find out the PID(s) for the process(es).

Type pkill followed by the PID(s).

You can kill any process that you own. Superuser can kill any process in the system except for those

processes with process IDs of 0, 1, 2, 3, and 4. Killing these processes most likely will crash the

system.

The process of subnetting involves the separation of the network and subnet portion of an address

from the host identifier. This is performed by a bitwise AND operation between the IP address and

the (sub)network prefix. The result yields the network address or prefix, and the remainder is the

host identifier.

The routing prefix of an address is written in a form identical to that of the address itself. This is

called the network mask, or netmask, of the address. For example, a specification of the most-

significant 18 bits of an IPv4 address, 11111111.11111111.11000000.00000000, is written as

255.255.192.0.