Validated 1Z0-821 Exam Dumps 2021

NEW QUESTION 1
Which best describes the svc:/system/boot-config service?

• A. It is used to change the milestone on a system.
• B. It is used to set the default run level of the system.
• C. It provides the parameters used to set the system to automatically perform a fast or slow reboot.
• D. When the service is enabled, the system performs a fast reboot by default; when it is disable the system performs a slow reboot by default.

Answer: C

Explanation: Starting with the Oracle Solaris 11 Express release, Fast Reboot is supported on the SPARC platform, as well as the x86 platform. On both platforms, this feature is controlled by the SMF and implemented through a boot configuration service, svc:/system/boot- config. The boot-config service provides a means for setting or changing the default boot configuration parameters.
The fastreboot_default property of the boot-config service enables an automatic fast reboot of the system when either the reboot or the init 6 command is used. When the config/fastreboot_default property is set to true the system automatically performs a fast reboot, without the need to use the reboot -f command. By default, this property's value is set to false on the SPARC platform and to true on the x86 platform.

NEW QUESTION 2
You need to migrate a UFS file system named /production_ufs to a ZFS file system named
/production_ufs. The /production_ufs file system cannot be taken down or be out of production during the migration, and the current /production_ufs file system must remain active until the /ptoduction_zfs file system is copied and ready.
Which method allows you to meet both requirements?
1. Copy live data from /production_ufs to /production_zfs while /production_ufs is in use.
2. When the copy is complete, /production_zfs will contain an up-to date copy of
/production_ufs

• A. Create a snapshot of the UFS file syste
• B. Create the new ZFS file syste
• C. Use cpio to copy data from the snapshot to the new ZFS file system.
• D. Create a new Boot Environmen
• E. Create the ZFS file syste
• F. Use lucreate -m to copy data from the Current UFS file system to the new ZFS file system.
• G. Mirror the existing UFS file system by using SVM.After both submissions are in sync, migrate one of the submissions to a ZFS file System by using Live Upgrade.
• H. Create the new ZFS file system by using zfs create import to import data from the existing UFS file system into the new ZFS file system
• I. Create the new zfs file system by using the zfs create -o shadow.

Answer: E

Explanation: Migrating Data With ZFS Shadow Migration
ZFS shadow migration is a tool you can use to migrate data from an existing file system to a new file system. A shadow file system is created that pulls data from the original source as necessary.
You can use the shadow migration feature to migrate file systems as follows:
* A local or remote ZFS file system to a target ZFS file system
* A local or remote UFS file system to a target ZFS file system
Shadow migration is a process that pulls the data to be migrated:
* Create an empty ZFS file system.
* Set the shadow property on an empty ZFS file system, which is the target (or shadow) file system, to point to the file system to be migrated.
For example:
# zfs create -o shadow=nfs://system/export/home/ufsdata users/home/shadow2
* Data from file system to be migrated is copied over to the shadow file system.

NEW QUESTION 3
The storage pool configuration on your server is:

You back up the /pool1/data file system, creating a snapshot and copying that snapshot to tape (/dev/rmt/0). You perform a full backup on Sunday night and Incremental backups on Monday through Saturday night at 11:00 pm. Each incremental backup will copy only the data that has been modified since the Sunday backup was started.
On Thursday, at 10:00 am, you had a disk failure. You replaced the disk drive (c4t0d0). You created pool (pool1) on that disk.
Which option would you select to restore the data in the /pool1/data file system?

• A. zfs create pool1/dataLoad the Monday tape and enter:zfs recv pool1/data </dev/rmt/0Load the Wednesday tape and enter:zfs recv –F pool1/data < /dev/rmt/0
• B. Load the Sunday tape and restore the Sunday snapshot:zfs recv pooll/data </dev/rmt/0zfs rollback pool1/data@monLoad the Wednesday tape and restore the Wednesday snapshot:zfs recv –i pooll/data < /dev/rmt/0zfs rollback pool1/data@wed
• C. zfs create pooll/dataLoad the Wednesday tape and enter:zfs recv -F pool1/data </dev/rmt/0
• D. Load the Sunday tape and enter:zfs recv pool1/data < /dev/rmt/0Load the Wednesday tape and enter:* commands missing*

Answer: D

Explanation: First the full backup must be restored. This would be the Sunday backup.
Then the last incremental backup must be restored. This would be the Wednesday backup. Before restoring the Wednesday incremental file system snapshot, the most recent snapshot must first be rolled back.
By exclusion D) would be best answer even though it is incomplete.

NEW QUESTION 4
You want to deploy Oracle Solaris 11 with the Automated Installer (AI). You need to make sure that your server and network meet the requirements for using AI.
Identify two requirements for using AI.

• A. You should set up DHC
• B. The DHCP server and AI install server can be the same machine or two different machines.
• C. You can create only one manifest per install servic
• D. If you need more than one manifest, you should create multiple install services.
• E. The minimum requirement to operate as an AI install server is 1 GB of memory.
• F. If two client machines have different architectures and need to be installed with the same version of the Oracle Solaris 11 OS, then you should create two AI manifests and a single install service.

Answer: AD

Explanation: A: An automated installation of a client over the network consists of the following high-level steps:
Step 1. The client system boots over the network and gets its network configuration and the location of the install server from the DHCP server.
Step 2: The install server provides a boot image to the client. Etc.
D: If two client machines need to be installed with the same version of the Oracle Solaris 11 OS but need to be installed differently in other ways, then create two AI manifests for the AI install service. The different AI manifests can specify different packages to install or a different slice as the install target, for example.

NEW QUESTION 5
Which two statements are true concerning the creation of user accounts by using the useradd command?

• A. By default, it will create the user's home directory.
• B. New user accounts are unlocked but must change their password at their first login.
• C. New user accounts are in a pending activation state until a password is assigned to them.
• D. By default, a new group will be added for each new user account.
• E. By default, the UID of a new user account will be the next available number above the highest number currently assigned.
• F. By default, the UID of a new user account with be the lowest available unused number for nonsystem accounts.

Answer: CE

NEW QUESTION 6
You wish to edit your crontab file that is located in /var/spool/cron/crontab. What command must you enter to edit this file?

• A. crontab –e
• B. crontab –e /var/spool/cron/crontab
• C. crontab –r
• D. crontab –e /etc/default/cron

Answer: A

Explanation: The main tool for setting up cron jobs is the crontab command, though this is not available on every Unix variant. Typically under Solaris or Linux one would create a new crontab or edit an existing one, using the command;
crontab -e
Use the ls -l command to verify the contents of the/var/spool/cron/crontabs file.

NEW QUESTION 7
You have set up the task.max-lwps resource control on your Solaris 11 system.
Which option describes how to configure the system so that syslogd notifies you when the resources control threshold value for the task.max-lwps resource has been exceeded?

• A. Use the rctladm command to enable the global action on the task.max-lwpa resource control.
• B. Modify the /etc/syslog.conf file to activate system logging of all violations of task.max- lwps and then refresh then svc: /system/system-log:default service.
• C. Activate system logging of all violations of task.max-lwpp in the /etc/rctldm.conf file and then execute the rctladm-u command.
• D. Use the prct1 command to set the logging of all resource control violations at the time the task.max-lwps resource control is being setup.
• E. Use the setrct1 command to set the logging of all resource control violations for the task.max-lwps resource control.

Answer: A

Explanation: rctladm - display and/or modify global state of system resource controls
The following command activates system logging of all violations of task.max-lwps.
# rctladm -e syslog task.max-lwps
#

NEW QUESTION 8
You start to execute a program by using the following command:
~/bigscript &
You then determine that the process is not behaving as expected, and decide that you need to terminate the process.
Based on the information shown below, what is the process number you should terminate?

• A. 15163
• B. 15156
• C. 15166
• D. 15165

Answer: A

Explanation: From the output exhibit we can deduce that the shell has id 15156. It has spawned three subprocesses:
grep: id 15166
ps –aef 15165
The remaining 15163 must be the subshell (see note below). This is the id of the process which should be terminated.

NEW QUESTION 9
To inspect network interface net3, you enter the following commands:

What problem do you suspect? Assume the user is authorized and provided the correct password.

• A. The net3 interface hasn't been enabled yet.
• B. The net3 vnic hasn't been created.
• C. The net3/v4 ip object hasn't been configured.
• D. The net3 interface is not attached to a NIC or etherstub.

Answer: C

Explanation: The following command marks the address object net1/v4a up that was previously marked
down.
# ipadm up-addr net1/v4a

NEW QUESTION 10
You are setting up an automated installer (AI) install server and issue the following command:
installadm create-service -n prod_ai -s /repo/prod_ai.iso
-i 192.168.1.100 -c 5 -d /export/repo
Which four options describe the install server that you have configured?

• A. The service name is prod_ai.
• B. DHCP base IP address is 192.168.1.100
• C. The initial IP address for the install clients will be 192.168.1.100. This IP address is temporar
• D. After the client is booted, it will use IP addresses in the following range: 192.168.1.101-105.
• E. Five IP addresses are allocated for DHCP clients, starting with 192.168.1.100.
• F. The Install server will support up to five clients.
• G. The AI net image ISO file is located in /repo/prod and the net image ISO will be unpacked in /export/repo.
• H. The AI net image ISO file is located in /repo/repo and is named /repo/prod/_ai.iso.

Answer: ABDF

Explanation: A: -n <svcname>
Uses this install service name instead of default service name.
B: -i <dhcp_ip_start>
Sets up a new DHCP server. The IP addresses, starting from dhcp_address_start, are set up.
D: -c <count_of_ipaddr>
Sets up a total number of IP addresses in the DHCP table equal to the value of the count_of_ipaddr. The first IP address is the value of dhcp_ip_start that is provided by the -i option.
F: -s <srcimage>
Specifies location of AI ISO image to use for setting up the install service.
<targetdir>
Required: Specifies location to set up net image.

NEW QUESTION 11
Review the storage pool information:

Choose the correct procedure to repair this storage pool.

• A. Shut the system down, replace disk c3t3d0, and boot the syste
• B. When the system is booted, execute the zpool clear pool1 command.
• C. Shut the system down, replace disk c3t3d0, and boot the syste
• D. When the system is booted execute the zpool online pool1 command.
• E. Shut the system down, replace disk c3t3d0, and boot the syste
• F. When the system is booted, execute the zpool replace pool1 c3t3d0 command.
• G. Shut the system down, replace disk c3t3d0, and boot the syste
• H. When the system is booted, execute the zpool replace pool1 c3t3d0 c3t3d0 command.

Answer: C

Explanation: 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
<Physically remove failed disk c1t0d0>
<Physically insert replacement disk c1t0d0>
# cfgadm -c configure c1::dsk/c1t0d0
# zpool replace rpool c1t0d0s0
# zpool online rpool c1t0d0s0
# zpool status rpool
<Let disk resilver before installing the boot blocks>
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

NEW QUESTION 12
Your SPARC server will not boot into multi user-server milestones and you need to troubleshoot to out why. You need to start the server with minimal services running so that you can go through each milestone manually to troubleshoot the issue.
Select the option that boots the server with the fewest services running.

• A. boot -s
• B. boot milestone none
• C. boot -m milestone=single-user
• D. boot -m milestone=none
• E. boot -m none

Answer: D

Explanation: The command boot -m milestone=none is useful in repairing a system that have problems booting early.
Boot Troubleshooting:
To step through the SMF portion of the boot process, start with: boot -m milestone=none
Then step through the milestones for the different boot levels: svcadm milestone svc:/milestone/single-user:default
svcadm milestone svc:/milestone/multi-user:default svcadm milestone svc:/milestone/multi-user-server:default

NEW QUESTION 13
View the Exhibit and review the disk configuration.

The following command is executed on the disk: zpool create pool1 c3t3d0s0
What is the result of executing this command?

• A. A zpool create error is generated.
• B. A 1-GB ZFS file system named /pool1 is created.
• C. A 15.97-GB storage pool named pool1 is created.
• D. The disk will contain an EFI disk label.

Answer: B

NEW QUESTION 14
Which three Installation option allow for a "hands free" and "unattended'" Installation of the Solaris 11 environment?

• A. Jumpstart
• B. LiveCD
• C. A text Installation over the network
• D. An Automated Installation performed on an x86 client
• E. An Automated Installation using media from a local DVD or USB drive
• F. An Automated Installation using a networked repository

Answer: DEF

Explanation: Oracle Solaris 11 uses Automated Installer (AI) for unattended installations.
Unattended installations are possible by placing the contents of the AI Image media (or ISO image contents from a download) on an AI server.

NEW QUESTION 15
The /etc/hosts file can be best described as .

• A. a local database of host names for rlogin, rsh, and rep
• B. the configuration file for the host name of the system
• C. a local database of information for the uname command
• D. the configuration file for the Domain Name Service (DNS)
• E. a local database of host names and their associated IP addresses

Answer: E

Explanation: As your machine gets started, it will need to know the mapping of some hostnames to IP addresses before DNS can be referenced. This mapping is kept in the /etc/hosts file. In the absence of a name server, any network program on your system consults this file to determine the IP address that corresponds to a host name.

NEW QUESTION 16
Your are troubleshooting network throughput on your server.
To confirm that the load balancing among aggregated links is functioning properly, you want to examine the traffic statistics on the links comprising the aggregation.
The correct command is .

• A. dlstat - aggr
• B. dlstat show-aggr
• C. dlstat show-link -r
• D. dlstat show-link -aggr
• E. dlstat show-phys -aggr

Answer: B

Explanation: dlstat show-aggr [-r | -t] [-i interval] [-p] [ -o field[, ...]] [-u R|K|M|G|T|P] [link] Display per-port statistics for an aggregation.

NEW QUESTION 17
You want to install the openldap software package to a now boot environment for testing before introducing the now software package to the production environment. What option describes the correct procedure to:
1) create a new BE named nowBE
2) install the software to that new BE only

• A. pkg install --newBE openldap
• B. pkg install --be-nama newBE openldap
• C. beadm create newBEbeadm mount newBE /mntpkg -R /mnt update openldap
• D. beadm create newBEbeadm activate newBEpkg install openldap

Answer: D

Explanation: If you want to create a backup of an existing boot environment, for example, prior to modifying the original boot environment, you can use the beadm command to create and mount a new boot environment that is a clone of your active boot environment. This clone is listed as an alternate boot environment in the GRUB menu for x86 systems or in the boot menu for SPARC systems.
When you clone a boot environment by using the beadm create command, all supported zones in that boot environment are copied into the new boot environment.
How to Create a Boot Environment
1. Become the root role.
2. Create the boot environment.
# beadm create BeName
BeName is a variable for the name of the new boot environment. This new boot environment is inactive.
3. (Optional) Use the beadm mount command to mount the new boot environment.
# beadm mount BeName mount-point
Note: If the directory for the mount point does not exist, the beadm utility creates the directory, then mounts the boot environment on that directory.
If the boot environment is already mounted, the beadm mount command fails and does not remount the boot environment at the newly specified location.
4. (Optional) Activate the boot environment.
# beadm activate BeName
BeName is a variable for the name of the boot environment to be activated.
On reboot, the newly active boot environment is displayed as the default selection in the x86 GRUB menu or the SPARC boot menu.