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

Question 1

Review the following output from the zpool status command:

Which three are true for pool1?

Select all that apply, then click Submit answer.

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It this mirror is split, the new pool will contain disks c3t5d0 and c3t6d0.
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If this mirror is split, by default the new pool will contain disks c3t3d0 and c3t5d0.
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Data is striped across mirror-0 and mirror-1.
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mirror-1 is a mirrored copy of data that is stored on mirror-0.
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Disk c3t3d0 is a mirrored copy of disk c3t4d0.
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If this mirror is split, pool1 will no longer be mirrored.

Reference / correct answer:

If this mirror is split, by default the new pool will contain disks c3t3d0 and c3t5d0.

Data is striped across mirror-0 and mirror-1.

Disk c3t3d0 is a mirrored copy of disk c3t4d0.

* Simulation:

* Creating a New Pool By Splitting a Mirrored ZFS Storage Pool

A mirrored ZFS storage pool can be quickly cloned as a backup pool by using the zpool split command.

Currently, this feature cannot be used to split a mirrored root pool.

You can use the zpool split command to detach disks from a mirrored ZFS storage pool to create a new pool with one of the detached disks. The new pool will have identical contents to the original mirrored ZFS storage pool.

By default, a zpool split operation on a mirrored pool detaches the last disk for the newly created pool. After the split operation, import the new pool. For example::

# zpool status tank pool: tank state: ONLINE scrub: none requested config:

NAME STATE READ WRITE CKSUM

tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 c1t0d0 ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0

errors: No known data errors

# zpool split tank tank2

# zpool import tank2 # zpool status tank tank2 pool: tank state: ONLINE scrub: none requested config:

NAME STATE READ WRITE CKSUM

tank ONLINE 0 0 0 c1t0d0 ONLINE 0 0 0 errors: No known data errors

pool: tank2 state: ONLINE scrub: none requested config:

NAME STATE READ WRITE CKSUM

tank2 ONLINE 0 0 0 c1t2d0 ONLINE 0 0 0

errors: No known data errors

Question 2

You configured a limit of 100 LWPs project. You want to ensure that the LWP limit was not set too low, so you need to monitor the LWPs currently in use by the project.

Which two options could you use to monitor the current LWP resource control and the consumption of resources for this project?

Select all that apply, then click Submit answer.

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prtcl $$
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configuring syslogd to log messages received from the resource manager daemon
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ps –o taskid –p
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prtcl –n task.max-lwps $$
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rctladm –l task.max-lwps
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rctladm –e syslog task.max-lwps; when the threshold for the resource is exceeded, a log entry will be generated by syslogd

Reference / correct answer:

prtcl –n task.max-lwps $$

rctladm –e syslog task.max-lwps; when the threshold for the resource is exceeded, a log entry will be generated by syslogd

D: Example:

# prctl -n task.max-lwps $$ process: 111107: csh

NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT task.max-lwps

usage 3

privileged 3 - deny system 2.15G max deny

F: The following command activates system logging of all violations of task.max-lwps.

# rctladm -e syslog task.max-lwps #

Note: How to Set the Maximum Number of LWPs for Each Task in a Project

This procedure adds a project named x-files to the /etc/project file and sets a maximum number of LWPs for a task created in the project.

1.Become an administrator.

2. Use the projadd command with the -K option to create a project called x-files. Set the maximum number of LWPs for each task created in the project to 3. # projadd -K 'task.max-lwps=(privileged,3,deny)' x-files

Question 3

Which two statements correct regarding Link Aggregations?

Select all that apply, then click Submit answer.

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The MAC address of the first configured link is used for all links.
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A link with an existing IP interface cannot be added to an aggregation.
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The switch must support the Link Aggregation Control Protocol (LACP).
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Links of differing bit rates can be aggregated, but performance gains may not be realized.
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The –f option of dladm allows aggregating devices that do not support link state notification.

1z0-822 – Oracle Solaris 11 Advanced System Administration