[Oct-2021] Verified 1Z0-821 dumps Q&As - 1Z0-821 dumps with Correct Answers
The Best Oracle Solaris Study Guide for the 1Z0-821 Exam
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NEW QUESTION 30
Review the boot environments displayed on your system:
Which option describes the solaris-1 BE?
- A. It is active on the next reboot.
- B. It is inactive.
- C. It is active now and on reboot.
- D. It is unbootable.
- E. It is active now.
- F. It has been removed and will no longer be available after the next reboot.
Answer: C
Explanation:
In the below output, NR (now running) means the BE is active now and will be the active BE on reboot.
Example:
Display your existing BE information.
# beadm list
BE Active Mountpoint Space Policy Created
-- ------ ---------- ----- ------ -------
solaris NR / 12.24G static 2011-10-04 09:42
NEW QUESTION 31
Review the information taken from your server:
Which option describes the command used to create these snapshots of the root file system?
- A. zfssnapshot-rBE1rpool
- B. zfssnapshot-rrpool@BEI
- C. zfssnapshotrpoolBEI
- D. beadmcreate-nBE1
- E. zfs snapshot rpool@BElrpool/ROOT@BElrpool/ROOT/solaris@BEl \rpool/ROOT/dump@BEIrpocl/ROOT/export@BEl \rpool/ROOT/export/home@BElrpaol/ROOT/swap@BEI:
Answer: B
Explanation:
zfs snapshot [-r] [-o property=value] ... filesystem@snapname|volume@snapname Creates a snapshot with the given name. All previous modifications by successful system calls to the file system are part of the snapshot. See the "Snapshots" section for details.
-r Recursively create snapshots of all descendent datasets. Snapshots are taken atomically, so that all recursive snapshots correspond to the same moment in time.
Reference: man zfs
NEW QUESTION 32
Your server has one zone named dbzone (hat has been configured, but not yet installed).
Which command would you use to view all the options that were used to configure this zone?
- A. zonecfg -z dbzone info
- B. zonecfg -icv dbzone info
- C. zones tat -c summary dbzone
- D. zoneadm list -icv dbzone
Answer: A
Explanation:
zonecfg info
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.
Note:
zonecfg -z
zonename. Specify the name of a zone. Zone names are case sensitive. Zone names must begin with an alphanumeric character and can contain alphanumeric characters, the underscore (_) the hyphen (-), and the dot (.). The name global and all names beginning with SUNW are reserved and cannot be used.
Incorrect answer:
A: The zoneadm utility is used to administer system zones. A zone is an application container that is maintained by the operating system runtime.
list option:
Display the name of the current zones, or the specified zone if indicated.
B: No such command.
D: no such options zonecfg -icv
NEW QUESTION 33
In a fresh installation of Oracle Solaris 11, default datalinks are named with a genetic naming convention, and they increment as you add interfaces. What is the default name?
- A. eth#
- B. net#
- C. nic#
- D. lo#
- E. el000g#
Answer: B
Explanation:
Explanation/Reference:
Explanation:
When you install this Oracle Solaris release on a system for the first time, Oracle Solaris automatically provides generic link names for all the system's physical network devices. This name assignment uses the net# naming convention, where the # is the instance number. This instance number increments for each device, for example, net0, net1, net2, and so on.
Note:
Network configuration in Oracle Solaris 11 includes
* Generic datalink name assignment - Generic names are automatically assigned to datalinks using the net0, net1, netN naming convention, depending on the total number of network devices that are on the system
NEW QUESTION 34
Review the non-global zone configuration displayed below:
The global zone has 1024 MB of physical memory. You need to limit the non-global zone so that it uses no more than 500 MB of the global zone's physical memory. Which option would you choose?
- A. Option A
- B. Option E
- C. Option B
- D. Option C
- E. Option D
Answer: D
Explanation:
Add a memory cap.
zonecfg:my-zone> add capped-memory
Set the memory cap.
zonecfg:my-zone:capped-memory> set physical=50m
End the memory cap specification.
zonecfg:my-zone:capped-memory> end
NEW QUESTION 35
The following information is displayed about the compress/zjp software package, which Is currently installed on this system:
NAME (PUBLISHER)VERSIONIFO
Compress/zip3.1.2-0.175.0.0.0.0.537if-
NAMEVERSIONDATECOMMENT
Compress/zip3.109 Dec 2011 04:50:38 ESTNone
Which statement describes the information that is displayed tor the compress/zip software package?
- A. This package can be updated to a new version when the new version of the package becomes available.
- B. This package cannot be downgraded to version 3.1.1.
- C. This package cannot be removed.
- D. This package can be updated to version 3.1.3 but not 3.2.
- E. This package cannot be updated.
Answer: A
Explanation:
An "f" in the F column indicates the package is frozen. If a package is frozen, you can only install or update to packages that match the frozen version.
Note: The "i" in the I column indicates that these packages are installed in this image.
Adding and Updating Oracle Solaris 11 Software Packages, Showing Package Install State Information
NEW QUESTION 36
A user jack,using a bash shell,requests a directory listing as follows:
Which three statements are correct?
- A. The pattern dir*a will expand to dira diraa.
- B. The pattern dir? will expand to dira dirb dirc.
- C. The pattern dir*b? will expand to dirb dirabc.
- D. The pattern dir*a will expand to diraa.
- E. The pattern dir*b? will expand to dirabc.
Answer: A,B,E
Explanation:
A: dir followed by a single letter.
C: dir followed by any characters ending with a.
D: dir followed by any characters,then character b,then one single character.
only dirabc matches
NEW QUESTION 37
You are installing Oracle Solaris 11 on a SPARC-based system by using the Test Installer.
Which three statements are true?
- A. The root filesystem will always be located on a local disk.
- B. The root filesystem will always be deployed on ZFS.
- C. The ROOT user will always be configured as a role.
- D. The set of packages that will be installed are server based.
- E. You must always create one regular user when installing the system.
- F. The network can be configured using DHCP.
Answer: B,D,F
NEW QUESTION 38
You have been asked to do an orderly shutdown on a process with a PID of 1234, with the kill command.
Which command is best?
- A. kill -15 1234
- B. kill -2 1234
- C. kill -1 1234
- D. kill -9 1234
Answer: A
Explanation:
On POSIX-compliant platforms, SIGTERM is the signal sent to a process to request its termination. The symbolic constant for SIGTERM is defined in the header file signal.h.
Symbolic signal names are used because signal numbers can vary across platforms, however on the vast majority of systems, SIGTERM is signal #15.
SIGTERM is the default signal sent to a process by the kill or killall commands. It causes the termination of a process, but unlike the SIGKILL signal, it can be caught and interpreted (or ignored) by the process. Therefore, SIGTERM is akin to asking a process to terminate nicely, allowing cleanup and closure of files. For this reason, on many Unix systems during shutdown, init issues SIGTERM to all processes that are not essential to powering off, waits a few seconds, and then issues SIGKILL to forcibly terminate any such processes that remain.
NEW QUESTION 39
Which two capabilities are provided by the OpenBoot PROM?
- A. starting the GRUB loader
- B. booting from a disk or network
- C. hardware testing and initialization
- D. a command to safely shut down the system
Answer: B,C
Explanation:
Explanation/Reference:
Explanation:
OpenBoot firmware is executed immediately after you turn on your system. The primary tasks of OpenBoot firmware are to:
* Test and initialize the system hardware (B)
* Determine the hardware configuration
*Boot the operating system from either a mass storage device or from a network (C)
*Provide interactive debugging facilities for testing hardware and software
NEW QUESTION 40
You have installed software updates to a new boot environment (BE) and have activated that the booting to the new BE, you notice system errors. You want to boot to the last known good configuration.
Which option would you use on a SPARC system to boot to the currentBE boot environment?
- A. boot-mcurrentBE
- B. boot-LcurrentBE
- C. beadm activate currentBE
- D. boot-Zrpool/ROOT/currentBE
- E. boot-aEnter the currentBE dataset name when prompted.
- F. boot rpool/ROOT/currentBE
Answer: C
Explanation:
You can change an inactive boot environment into an active boot environment. Only one boot environment can be active at a time. The newly activated boot environment becomes the default environment upon reboot.
How to Activate an Existing Boot Environment beadm activate beName
beName is a variable for the name of the boot environment to be activated.
Note the following specifications.
beadm activate beName activates a boot environment by setting the bootable pool property, bootfs, to the value of the ROOT dataset of the boot environment that is being activated.
beadm activate sets the newly activated boot environment as the default in the menu.lst file.
The newly activated boot environment is now the default on the x86 GRUB menu or SPARC boot menu.
Reference:Changing the Default Boot Environment Booting a Solaris System
NEW QUESTION 41
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 show-link -aggr
- B. dlstat show-link -r
- C. dlstat show-phys -aggr
- D. dlstat show-aggr
- E. dlstat - aggr
Answer: D
Explanation:
Explanation/Reference:
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 42
When setting up Automated Installer (AI) clients,an interactive tool can be used to generate a custom system configuration profile. The profile will specify the time zone,data and time,user and root accounts,and name services used for an AI client installation. This interactive tool will prompt you to enter the client information and an SC profile (XML) will be created.
Which interactive tool can be used to generate this question configuration?
- A. installadm set-criteria
- B. installadm create-profile
- C. sys-unconfig
- D. sysconfig create-profile
Answer: A
Explanation:
Use the installadm set-criteria command to update the client criteria associated with an AI manifest that you already added to a service using installadm add-manifest.
Use the installadm add-manifest command to add a custom AI manifest to an install service.
The value of manifest is a full path and file name with .xml extension. The manifest file contains an AI manifest (installation instructions). The manifest file can also reference or embed an SC manifest (system configuration instructions).
NEW QUESTION 43
You have installed software updates to a new boot environment (BE) and have activated that the booting to the new BE, you notice system errors. You want to boot to the last known good configuration.
Which option would you use on a SPARC system to boot to the currentBE boot environment?
- A. boot -L currentBE
- B. boot -m currentBE
- C. boot -Z rpool/ROOT/currentBE
- D. beadm activate currentBE
- E. boot -a Enter the currentBE dataset name when prompted.
- F. boot rpool/ROOT/currentBE
Answer: D
Explanation:
Explanation/Reference:
Explanation:
You can change an inactive boot environment into an active boot environment. Only one boot environment can be active at a time. The newly activated boot environment becomes the default environment upon reboot.
How to Activate an Existing Boot Environment
1. Use the following command to activate an existing, inactive boot environment:
beadm activate beName
beName is a variable for the name of the boot environment to be activated.
Note the following specifications.
beadm activate beName activates a boot environment by setting the bootable pool property, bootfs, to the value of the ROOT dataset of the boot environment that is being activated.
beadm activate sets the newly activated boot environment as the default in the menu.lst file.
2. Reboot.
The newly activated boot environment is now the default on the x86 GRUB menu or SPARC boot menu.
NEW QUESTION 44
Review the boot environment information displayed on your system:
Which two options accurately describe the newBE boot environment?
- A. It cannot be destroyed.
- B. It cannot be renamed.
- C. It cannot be activated.
- D. It has been deleted and will be removed at the next reboot.
- E. You can create a snapshot of it.
- F. It is activated but unbootable.
Answer: B,C
Explanation:
If the boot environment is unbootable, it is marked with an exclamation point (!) in the Active column in the beadm list output.
The beadm command restricts actions on unbootable boot environments as follows:
You cannot activate an unbootable boot environment. (B)
You cannot destroy a boot environment that is both unbootable and marked as active on reboot.
You cannot create a snapshot of an unbootable boot environment.
You cannot use an unbootable boot environment or boot environment snapshot with the -e option of beadm create.
You cannot rename an unbootable boot environment. (C)
NEW QUESTION 45
Which two options describe how to override the default boot behavior of an Oracle Solaris
11 SPARC system to boot the system to the single-user milestone?
- A. From the ok prompt, issue this command: boot -m milestone/single-user
- B. From the ok prompt, issue this command: boot -milestone=single-user
- C. from the ok prompt, issue this command: boot -m milestone=single-user
- D. From from the ok prompt, issue this command:boot -m milestone=s
- E. From the ok prompt. issue this command:boot -s
Answer: C,E
Explanation:
By default, Solaris will boot to the pseudo milestone "all" and start all services. This behaviour can be changed at boot time using either "-s" to reach single-user, or the new SMF option "-m milestone=XXX" (see kernel(1M) for a list of the bootable milestones) to select an explicit milestone.
Note: boot -s is the same as: boot -m milestone=single-user
with the difference being that the former is a lot less to type and is what most SysAdmins will be familiar with.
NEW QUESTION 46
On localSYS, your SPARC based server, you back up the root file system with recursive snapshots of the root pool. The snapshots are stored on a remote NTS file system.
This information describes the remote system where the snapshots are stored:
Remote system name: backupSYS
File system whore the snapshots are stored: /backups/localSYS
Mounted file system on localSYS: /rpool/snaps
Most recent backup name: rpool-1202
Disk c0t0d0 has failed in your root pool and has been replaced. The disk has already been part< and labeled and now you need to restore the root file system. Which procedure would you follow to restore the ZFS root file system on localSYS?
- A. boot cdrom -s mount -f nfs backup_server:/rpool/snaps /rmt zpool create rpool c0t0d0s0 zfs receive -Fdu /mnt/rpool.1011 zpool set bootfs=rpool/ROOT/solaris rpool Reinstall the bootblock on c0t0d0.
- B. boot cdrom -s mount -F nfs backup_server:/rpool/snaps /mnt cat /mnt/rpool.1011 | zfs receive -Fdu rpool zpool set bootfs=rpool/ROOT/solaris rpool c0t0d0s0 Reinstall the bootblock on c0t0d0s0
- C. boot cdrom -s mount -f nfs backup_server:/rpool/snaps /mnt zpool create rpool c0t0d0s0 zfs create -o mountpoint=/ rpool/ROOT cat /mnt/rpool.1011 | zfs receive -Fdu rpool zpool set bootfs=rpool/ROOT/solaris rpool Recreate swap and dump devices. Reinstall the bootblock on c0t0d0.
- D. boot cdrom -s mount -f nfs backup_server:/rpool/snaps /rmt zpool create rpool c0t0d0s0 cat /mnt/rpool.1202 | zfs receive -Fdu rpool zpool set bootfs=rpool/ROOT/solaris rpool Recreate swap and dump devices. Reinstall the bootblock on c0t0d0.
Answer: D
Explanation:
How to Recreate a ZFS Root Pool and Restore Root Pool Snapshots In this scenario, assume the following conditions:
*ZFS root pool cannot be recovered
*ZFS root pool snapshots are stored on a remote system and are shared over NFS
*The system is booted from an equivalent Solaris release to the root pool version so that the Solaris release and the pool version match. Otherwise, you will need to add the -o version=version-number property option and value when you recreate the root pool in step 4 below.
All steps below are performed on the local system.
1.Boot from CD/DVD or the network.
On a SPARC based system, select one of the following boot methods:
ok boot net -s ok boot cdrom -s If you don't use -s option, you'll need to exit the installation program.
2.Mount the remote snapshot dataset.
For example:
3.Recreate the root pool.
For example:
# zpool create -f -o failmode=continue -R /a -m legacy -o cachefile=/etc/zfs/zpool.cache rpool c1t0d0s0
4.Restore the root pool snapshots.
This step might take some time. For example:
# cat /mnt/rpool.0311 | zfs receive -Fdu rpool Using the -u option means that the restored archive is not mounted when the zfs receive operation completes.
5.Set the bootfs property on the root pool BE.
For example:
# zpool set bootfs=rpool/ROOT/osolBE rpool
6.Install the boot blocks on the new disk.
On a SPARC based system:
# mount -F nfs remote-system:/rpool/snaps /mnt # installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk /dev/rdsk/c1t0d0s0
Reference: How to Recreate a ZFS Root Pool and Restore Root Pool Snapshots, Oracle Solaris ZFS Administration Guide
NEW QUESTION 47
You have been tasked with creating a dedicated virtual network between two local zones within a single system. In order to isolate the network traffic from other zones on that system.
To accomplish this,you will create__________.
- A. A virtual router
- B. A virtual switch
- C. An ether stub
- D. A virtual bridge.
- E. Nothing because a virtual switch is automatically created then the virtual network interfaces are created.
- F. A virtual network interface
Answer: C
Explanation:
Etherstubs are pseudo ethernet NICs which are managed by the system administrator. You can create VNICs over etherstubs instead of over physical links. VNICs over an etherstub become independent of the physical NICs in the system. With etherstubs,you can construct a private virtual network that is isolated both from the other virtual networks in the system and from the external network. For example,you want to create a network environment whose access is limited only to your company developers than to the network at large.
Etherstubs can be used to create such an environment.
Note: Oracle Solaris 11 introduces a new and powerful network stack architecture which includes:
*Networking virtualization with virtual network interface cards (VNICs) and virtual switching (etherstubs)
*Tight integration with zones
*Network resource management - efficient and easy to manage integrated quality of service (QoS) to enforce bandwidth limit on VNICs and traffic flows We will be examini
NEW QUESTION 48
View the Exhibit to see the information taken from the installation log file.
Based on the information presented in the Exhibit, which two options describe the state of the system when the server is booted for the first time after the installation is complete?
- A. NWAM will be used to configure the network interface.
- B. You cannot log in from the console as root. You must first log in as a user and then su to root account.
- C. The network/physical service is offline.
- D. The root user can log in from the console login.
- E. You will be prompted to configure the network interface after the initial login.
Answer: C,D
NEW QUESTION 49
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 the new zfs file system by using the zfs create -o shadow.
- B. 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.
- C. 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
- D. Create a new Boot Environment. Create the ZFS file system. Use lucreate -m to copy data from the Current UFS file system to the new ZFS file system.
- E. Create a snapshot of the UFS file system. Create the new ZFS file system. Use cpio to copy data from the snapshot to the new ZFS file system.
Answer: A
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 50
Review the boot environment information displayed on your system:
Which two options accurately describe the newBE boot environment?
- A. It cannot be destroyed.
- B. It cannot be renamed.
- C. It cannot be activated.
- D. It has been deleted and will be removed at the next reboot.
- E. You can create a snapshot of it.
- F. It is activated but unbootable.
Answer: B,C
Explanation:
If the boot environment is unbootable,it is marked with an exclamation point (!) in the Active column in the beadm list output.
The beadm command restricts actions on unbootable boot environments as follows:
You cannot activate an unbootable boot environment. (B)
You cannot destroy a boot environment that is both unbootable and marked as active on reboot.
You cannot create a snapshot of an unbootable boot environment.
You cannot use an unbootable boot environment or boot environment snapshot with the -e option of beadm create.
You cannot rename an unbootable boot environment. (C)
NEW QUESTION 51
You attempted to reboot a system via the init command,however the system did not perform boot sequence into the Oracle Solaris Operating Environment. You are presented with a prompt from the OpenBoot PROM. Which command would you enter,to boot the system from the default device?
- A. boot
- B. boot -s0
- C. boot -net install
- D. boot -default
Answer: A
Explanation:
Boot With this form,boot loads and executes the program specified by the default bootarguments from the default boot device
Note: boot has the following general format: boot [device-specifier] [arguments] where device-specifier and arguments are optional.
NEW QUESTION 52
You are having an issue with the shutdown command. You wish to determine if the file is a script or an executable program. Which command would you use to determine this?
- A. attrib shutdown
- B. odshutdown
- C. cksumshutdown
- D. test shutdown
- E. file shutdown
Answer: E
Explanation:
The file command determines the file type. file tests each argument in an attempt to classify it. There are three sets of tests, performed in this order: filesystem tests, magic tests, and language tests. The first test that succeeds causes the file type to be printed.
Reference: man file
NEW QUESTION 53
Which two SMF milestones can be specified at boot time?
- A. config
- B. devices
- C. all
- D. unconfig
- E. network
- F. none
Answer: C,F
Explanation:
The milestones that can be specified at boot time are
none single-user multi-user multi-user-server all
NEW QUESTION 54
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1Z0-821 certification guide Q&A from Training Expert TestSimulate: https://www.testsimulate.com/1Z0-821-study-materials.html