1Z0-821 Online Practice Questions and Answers

Correct Answer: B

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.

Correct Answer: AD

A: Conditional and system locations can be manually activated, which means that the location remains active until explicitly disabled.

D: A location comprises certain elements of a network configuration, for example a name service and firewall settings, that are applied together, when required. You can create multiple locations for various uses. For example, one location can be used when you are connected at the office by using the company intranet. Another location can be used at home when you are connected to the public Internet by using a wireless access point. Locations can be activated manually or automatically, according to environmental conditions, such as the IP address that is obtained by a network connection.

Correct Answer: D

Correct Answer: C

A kernel panic is a type of error that occurs when the core (kernel) of an operating system receives an instruction in an unexpected format or when it fails to handle properly. A kernel panic can also follow when the operating system can't recover from a different type of error. A kernel panic can be caused by damaged or incompatible software or, more rarely, damaged or incompatible hardware.

When a server kernel panics it abruptly halts all normal system operations. Usually, a kernel process named panic() outputs an error message to the console and stores debugging information in nonvolitile memory to be written to a crash log file upon restarting the computer. Saving the memory contents of the core and associated debugging information is called a "core dump."

Correct Answer: B

By default, the passwd command assumes a minimum length of six characters. You can use the PASSLENGTH default in the /etc/defaults/passwd files to change that by setting the minimum number of characters that a user's password must contain to some other number.

Correct Answer: CDG

C: /etc/security/exec_attr is a local database that specifies the execution attributes associated with profiles. The exec_attr file can be used with other sources for execution profiles, including the exec_attr NIS map and NIS+ table.

A profile is a logical grouping of authorizations and commands that is interpreted by a profile shell to form a secure execution environment.

Correct Answer: BC

Correct Answer: BE

B: It can be created by importing a Solaris 10 flash archive. You can use the Oracle Solaris Flash archiving tools to create an image of an installed system that can be migrated into a zone.

The system can be fully configured with all of the software that will be run in the zone before the image is created. This image is then used by the installer when the zone is installed.

Note: You can use alternate methods for creating the archive. The installer can accept the following archive formats:

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cpio archives

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gzip compressed cpio archives

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bzip2 compressed cpio archives

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pax archives created with the -x xustar (XUSTAR) format ?ufsdump level zero (full) backups

Note:

Branded zones that run an environment different that the OS release on the system

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The lx branded zone introduced in the Solaris 10 8/07 release provides a Linux environment for your applications and runs on x86 and x64 machines on the Oracle Solaris 10 OS.

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The solaris8 and solaris9 branded zones enable you to migrate an Oracle Solaris 8 or Oracle Solaris 9 system to an Oracle Solaris 8 or Oracle Solaris 9 Container on a host running the Oracle Solaris 10 8/07 Operating System or later Oracle Solaris 10 release.

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The Oracle Solaris 10 Container brand is available in OpenSolaris build 127. These branded zones host Oracle Solaris 10 user environments.

Note: One of the powerful features of Solaris 11 is the ability to run a Solaris 10 environment in a zone. Solaris 10 allows you to run Solaris 8 and 9 environments in zones, but only on SPARC.

Correct Answer: AB

Oracle Solaris provides predefined rights profiles. These profiles, listed in the /etc/security/prof_attr, can be assigned by the root role to any account. The root role is assigned all privileges and all authorizations, so can perform all tasks, just as root can when root is a user.

To perform administrative functions, you open a terminal and switch the user to root. In that terminal, you can then perform all administrative functions.

$ su - root Password: Type root password # When you exit the shell, root capabilities are no longer in effect.

Correct Answer: C

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