[Nov-2021] 1Z0-821 Dumps Full Questions - Oracle Solaris Exam Study Guide
Exam Questions and Answers for 1Z0-821 Study Guide
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NEW QUESTION 76
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 system. When the system is booted, execute the zpool replace pool1 c3t3d0 command.
- B. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool clear pool1 command.
- C. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted execute the zpool online pool1 command.
- D. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool replace pool1 c3t3d0 c3t3d0 command.
Answer: A
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 77
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 switch
- B. A virtual bridge.
- C. A virtual network interface
- D. An ether stub
- E. A virtual router
- F. Nothing because a virtual switch is automatically created then the virtual network interfaces are created.
Answer: D
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
NEW QUESTION 78
Identify three differences between the shutdown and init commands.
- A. The shutdown command can only bring the system to the single-user milestone. The command must be used to shut the system down to run level 0.
- B. init does not terminate all services normally. The shutdown command performs a t shutdown of all services.
- C. init shuts a system down faster than the shutdown command.
- D. Only shutdown broadcasts a final shutdown warning to all fogged in users.
- E. The shutdown command will shut thesystem down and turn off power;init will only shut system down.
- F. The shutdown sends a shutdown message to any systems that are mounting resource-tern that is being shut down.
Answer: C,D,F
Explanation:
Note shutdown: shutdown is executed by the super user to change the state of the machine. In most cases, it is used to change from the multi-user state (state 2) to another state.
By default, shutdown brings the system to a state where only the console has access to the operating system. This state is called single-user.
Before starting to shut down daemons and killing processes, shutdown sends a warning message and, by default, a final message asking for confirmation. message is a string that is sent out following the standard warning message "The system will be shut down in ..." If the string contains more than one word, it should be contained within single (') or double (") quotation marks.
Note init: If a 0 through 6 is entered, init enters the corresponding run level. Run levels 0, 5, and 6 are reserved states for shutting the system down. Run levels 2, 3, and 4 are available as multi-user operating states.
OPTIONS 0 Go into firmware. 5 Shut the machine down so that it is safe to remove the power. Have the machine remove power, if possible.
6 Stop the operating system and reboot to the state defined by the initdefault entry in /etc/inittab.
Reference: man init, man shutdown
NEW QUESTION 79
You are creating a non-global zone on your system.
Which option assigns a zpool to a non-global zone, and gives the zone administrator permission to create zfs file system in that zpool?
- A. In the global zone, create the zpool and the ZFS file systems that you want to use in the non-
global zone:
global#zpool create pool2 c4t1d0
global#zfs create pool2/data
While creating the non-global zone, make the following entry for each ZFS file system that you
want to make available in the zone:
add fs
set dir=/data
set special=pool2/data
set type=zfs
end - B. In the global zone, create the zpool:
global#zpool create pool2 c4t1d0
While creating the global zone, make the following entry:
add dataset set name=pool2 end Boot the zone, log in to the zone as root and create the zfs file systems in the pool2 zpool. - C. While creating the non-global zone, make the following entry:
add device
set match=/dev/rdsk/c4t0d0
end
Boot the zone and log in the zone as root. Create the zpool:
zpool create pool2 c4t0d0
In the non-global zone, root can now create ZFS file system in the pool2 zpool - D. Create the zpool in the global zone:
global#zpool create pool2 c4t1d0
Boot the non-global zone, log in to the zone as root, and issue this command to delegate ZFS
permissions to root:
non-global zone# zfs allow root create , destroy, mount pool2
Log in to the non-global zone create ZFS file systems in the pool2 zpool. - E. In the global zone, create the zpool:
global# zpool create pool2 c4t1d0
While creating the no-global zone, make the following entry:
add dataset
set name=pool2
end
add fs
set dir=pool1
set special=pool1
set type=zfspool1
end
Boot the zone, log in the zone as root, and create the zfs file system in the pool2 zpool.
Answer: A
Explanation:
You can add a ZFS file system to a non-global zone by using the zonecfg command's add fs subcommand.
In the following example, a ZFS file system is added to a non-global zone by a global zone administrator from the global zone:
# zonecfg -z zion zonecfg:zion> add fs zonecfg:zion:fs> set type=zfs zonecfg:zion:fs> set special=tank/zone/zion zonecfg:zion:fs> set dir=/export/shared zonecfg:zion:fs> end
Reference: Oracle Solaris ZFS Administration Guide, Adding ZFS File Systems to a Non-Global Zone
NEW QUESTION 80
Which two options are valid methods of installing a solaris10 branded zone on a system running Oracle Solaris 11?
- A. Use the V2V process to migrate an existing Solaris 8 or 9 non-global zone from a Solaris 10 system to a solaris10 branded zone.
- B. Use the V2V process to migrate an existing Solaris 10 non-global sparse root zone from a Solaris 10 system to a solaris10 branded sparse root zone.
- C. Migrate an existing 64-bit Solaris 10 system to a solaris10 branded non-global zone using the P2V process.
- D. Install a solaris10 branded zone directly from the Oracle Solaris 10 media.
- E. Use the V2V process to migrate an existing Solaris 10 non-global whole root zone from a Solaris 10 system to a solaris10 branded whole root zone.
Answer: D,E
Explanation:
Explanation/Reference:
Explanation:
B: How to Migrate an Existing native Non-Global Zone
Use the V2V process to migrate an existing zone on your Solaris 10 system to a solaris10 brand zone on a system running the Oracle Solaris 11 release.
C: How to Install the solaris10 Branded Zone
A configured solaris10 branded zone is installed by using the zoneadm command with the install subcommand.
NEW QUESTION 81
Identify three options that describe the new Oracle Solaris 11 zone features.
- A. There are boot environments for zones.
- B. You can migrate a physical Solaris 10 system and its non-global zones to a solaris10 branded zone running on an Oracle Solaris 11 system.
- C. Oracle Solaris 11 supports Solaris 8, 9, and 10 branded zones.
- D. Administrators can delegate common administration tasks by using RBAC.
- E. It is possible to change the host ID of a zone.
Answer: A,B,D
Explanation:
A: The beadm utility includes support for creating and administering non-global zone boot environments.
Note: A boot environment is a bootable instance of the Oracle Solaris operating system image plus any other application software packages installed into that image. System administrators can maintain multiple boot environments on their systems, and each boot environment can have different software versions installed.
B: Role-based access control (RBAC) is a security feature for controlling user access to tasks that would normally be restricted to the root role. By applying security attributes to processes and to users, RBAC can divide up superuser capabilities among several administrators.
NEW QUESTION 82
You enter dladm show-phys, which provides the following output:
You then enter:
ipadm create-ip net3
What is the output?
- A. ipadm: cannot create interface net3: Interface already exists.
- B. ipadm: cannot; create interface net3: Operation failed.
- C. No_response, The command was successful.
- D. ipadm: cannot create interface net3: IP address object not specified.
Answer: A
Explanation:
Explanation/Reference:
Explanation:
According to the exhibit the interface already exists.
The command ipadm create-ip net3 is supposed to create a new interface net3.
NEW QUESTION 83
Your server has a ZFS storage pool that is configured as follows:
The server has two spate 140-GB disk drives: c3t5d0 c3t6d0
Which command would add redundancy to the pool1 storage pool?
- A. zpool attach pool1 c3t5d0 c3t6d0
- B. zpool mirror pool1 c3t5d0 c3t6d0
- C. zpool attach pool1 c3t3d0 c3c5d0; zpoo1 attach pool1 c3t4d0 c3t6d0
- D. zpool add raidz pool1 c3t5d0 c3t6d0
- E. zpool add pool1 mirror c3t5d0 c3t6d0
Answer: A
Explanation:
Explanation/Reference:
Explanation:
You can convert a non-redundant storage pool into a redundant storage pool by using the zpool attach command.
Note: zpool attach [-f] pool device new_device
Attaches new_device to an existing zpool device. The existing device cannot be part of a raidz configuration. If device is not currently part of a mirrored configuration, device automatically transforms into a two-way mirror of device and new_device. If device is part of a two-way mirror, attaching new_device creates a three-way mirror, and so on. In either case, new_device begins to resilver immediately.
NEW QUESTION 84
You are currently working in both your home directory and the system directory /tmp. You are switch back and forth with full path names. Which pair of cd commands will provide you with a shortcut to switch between these two locations?
- A. cd and cd.
- B. cd ~ and cd -
- C. cd * and cd . .
- D. cd ~ and cd
Answer: B
Explanation:
In the Bourne Again,C,Korn,TC,and Z shells,the tilde (~) is used as a shortcut for
specifying your home directory.
cd -
It's the command-line equivalent of the back button (takes you to the previous directory you
were in).
Note:
To make certain that you are in your home directory,type the cd (change directory)
command. This command moves you to your home (default) directory.
NEW QUESTION 85
You are the administrator for a group of shell script developers. They use vi,and have
asked you to make their scripts automatically executable when they save their files.
How can this be accomplished?
- A. Enter umask 777 on the command line,or include it in each user's startup script.
- B. Enter umask -s on the command line,or include it in each user's startup script.
- C. Enter umask 766 the command line,or include it in the global startup script for the default shell.
- D. Enter umask 000 on the command line,or include it in each user's startup script.
- E. Enter set -o vi on the command line,or include it in each user's startup script.
- F. It is not possible to automatically set the execute bit on with the umask setting,or vi option.
Answer: F
Explanation:
Unlike DOS,which uses the file extension to determine if a file is executable or not,UNIX
relies on file permissions.
The value assigned by umask is subtracted from the default.
User's file creation mask. umask sets an environment variable which automatically sets file
permissions on newly created files. i.e. it will set the shell process's file creation mask to
mode.
umask 000 would grant full permissions.
Note: 777 full permissions
NEW QUESTION 86
You are troubleshooting interface net3 and you enter the following sequence of commands:
Your next command should be:
- A. ipadm up-addr net3/v4
- B. ipadm enable-if -T net3
- C. ipadm create-addr -T static -a 192.168.1.25/24 net3
- D. ipadm create-ip -T static -a 192.168.1.25/24 -n net3
- E. <ipadm create-vnic -a 192.168.1.25/24 net3/v4
Answer: C
Explanation:
If you are assigning a static IP address,use the following syntax:
# ipadm create-addr -T static -a address addrobj where addrobj uses the naming format interface/user-defined-string,such as e1000g0/v4globalz.
Note: create-addr [-t] -T static [-d] -a {local | remote}=addr[/prefixlen],... addrobj Creates a static IPv4 or IPv6 address on the interface specified in addrobj. If the interface on which the address is created is not plumbed,this subcommand will implicitly plumb the interface. The created static address will be identified by addrobj. By default,a configured address will be marked up,so that it can be used as a source or destination of or for outbound and inbound packets.
NEW QUESTION 87
You need to configure an ISCSI target device on your x86 based Oracle Solaris II system. While configuring the iSCSI device, the following error is displayed:
bash: stmfadm: command not found
Which option describes the solution to the problem?
- A. Install the storage-server group package on this system.
- B. The COMSTAR feature is not supported on the x86 platform. The feature is supported only on the SPARC platform.
- C. Start the iSCSI target daemon on this system.
- D. Use the iscsitadm command on the x86 platform when configuring an iSCSI target.
Answer: A
Explanation:
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.
Reference: Oracle Solaris Administration, Configuring iSCSI Devices With COMSTAR
NEW QUESTION 88
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.
Choose the three options that describe the requirements for using AI.
- A. If two client machines have different architectures and need to be installed with the same version of the Oracle Solaris 11 OS, then create two AI manifests and a single install service.
- B. You need a separate install service for each different client architecture that you plan to install, and for each different version of the Oracle Solaris 11 OS that you plan to install on client systems.
- C. If two client machines have different architectures and need to be installed with different versions of the Oracle Solaris 11 OS, then create two AI manifests and two install services.
- D. You can create only one manifest per install service. If you need more than one manifest create multiple install services.
- E. The install server needs to be able to access an Oracle Solaris Image Packaging System (IPS) software package repository; the clients do not.
- F. The install server can be either an x86 machine or a SPARC machine.
Answer: A,E,F
Explanation:
B (not A, not D, Not C): 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.
Note: An AI manifest provides installation instructions.
The AI manifest specifies one or more IPS package repositories where the client retrieves the packages needed to complete the installation. The AI manifest also includes the names of additional packages to install and information such as target installation device and partition information.
F: The install server can be either an x86 machine or a SPARC machine.
NEW QUESTION 89
Your server has a ZFS storage pool that is configured as follows:
The server has two spare 146-GB disk drives: c3t5d0 c3t6d0
You need to add more space to the pool1 storage pool. Which command would add more mirrored storage to the pool1 storage pool?
- A. zpool add pool1 mirror c3t5d0 c3t6d0
- B. zpool attach pool1 c3r3d0 c3r5d0; zpool attach pool1 c3r4d0 c3r6d0
- C. zpool attach pool1 mirror c3t5d0 c3t6d0
- D. zpool add pool1 c3r3d0 c3r5d0; zpool add pool1 c3r4d0 c3r6d0
Answer: A
NEW QUESTION 90
User brian changes the permissions for db_data this command:
chmod 4755 db_data
What is true?
- A. db_data nowhas permissions rwsr-xr-x and, ifexecuted, will inn withthe permissions of user brian.
- B. db_data now has permissions rwsr-xr-x and can be deleted onlyby user brian.
- C. db_data must be an ordinary file, because special permissions cannot be set on a directory.
- D. The permissions for db_data cannot be determined, because the permissions prior to thechange havenot been specified.
- E. db_data now has permissions rwxr-sr-x and can be deleted only by members of the group owning it.
Answer: E
Explanation:
Use the chmod command to change permissions for a file or directory. You must be
the owner of a file or directory, or have root access, to change its permissions.
Here we do not know if brian owns db_data.
Note:
Permission
7full
6read and write
5read and execute
4read only
3write and execute
2write only
1execute only
0none
0 --- no permission
1 --x execute
2 -w- write
3 -wx write and execute
4 r-- read
5 r-x read and execute
6 rw- read and write
7 rwx read, write and execut
Solaris: Solaris Advanced User's Guide
NEW QUESTION 91
When issuing the zonestat 2 1h is command, the following information is displayed: Which two options accurately describe the statistics contained in the output?
- A. dbzone is using 0.21% of the global zone's total CPU.
- B. dbzone is using 5.48% of the total physical memory that has been allocated to the zone.
- C. dbzone is using 2.37% of the global zone's total virtual memory.
- D. The network is being utilized 100% with no physical bandwidth remaining.
- E. dbzone is using 0.21% of the total CPU resource available in the zone's processor set.
Answer: B,E
Explanation:
A: %PART The amount of cpu used as a percentage of the total cpu in a processor-set to which the zone is bound. A zone can only have processes bound to multiple processor sets if it is the global zone, or if psrset(1m) psets are used. If multiple binding are found for a zone, it's %PART is the fraction used of all bound psets. For [total] and [system], %PART is the percent used of all cpus on the system.
Note: The zonestat utility reports on the cpu, memory, and resource control utilization of the currently running zones. Each zone's utilization is reported both as a percentage of system resources and the zone's configured limits.
The zonestat utility prints a series of interval reports at the specified interval. It optionally also prints one or more summary reports at a specified interval.
Reference: man zonestat
NEW QUESTION 92
You are the administrator of a system that a large number of developers work on. These developers crash the system, and their applications, on a regular basis.
What command would you use to configure where the core files are saved?
- A. proc
- B. coreadm
- C. savecore
- D. dumpadm
- E. svcadm
Answer: B
Explanation:
Explanation/Reference:
Explanation:
The coreadm command is used to specify the name and location of core files produced by abnormally- terminating processes.
NEW QUESTION 93
Review the storage pool information: Which statement describes the status of this storage pool?
- A. It is a RAIDZ storage pool and can withstand a single disk failure; data will be striped at: disk components.
- B. It is a double-parity RAIDZ storage pool and can withstand two disk failures; data will be striped across four disk components.
- C. It is an improperly configured RAIDZ storage pool; data will be striped across four disk components, but only three drives are protected with redundancy.
- D. It is an improperly configured RAIDZ storage pool; data will be striped across three disk components, but only three drives are protected with redundancy.
Answer: D
Explanation:
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.
Reference: RAID-Z Storage Pool Configuration
NEW QUESTION 94
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