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Oracle 1Z0-821 exam is ideal for professionals who are involved in the administration and management of Oracle Solaris 11 operating systems. Oracle Solaris 11 System Administration certification is recognized globally and is highly valued by employers. 1Z0-821 exam is designed to test the candidate's knowledge and skills in various areas of system administration, including installation, configuration, and maintenance of the operating system. Candidates who pass the exam demonstrate their ability to perform critical system administration tasks on Oracle Solaris 11, making them valuable assets to their organizations.
NEW QUESTION # 104
You want the system to generate an email notification each time one of the services has changed its state. Which option would send an email message to the system administrator whenever a service changes to the maintenance state?
- A. Use the setsc command in ALOM to enable the mail alerts to be sent to a specified email address whenever the fault management facility detects a service change to the maintenance state.
- B. Use the scvadm command to enable the notification service. Set the -g maintenance option on the netnotify service to send an email when a service enters the maintenance state.
- C. Make an entry in the /etc/syslog.conf file to instruct syslogd to send an email alert when it receives a message from the SMF facility that a service has changed to the maintenance state.
- D. Use the svccfg setnotify command to create a notification and send an email when a service enters the maintenance state.
Answer: D
Explanation:
This procedure causes the system to generate an email notification each time one of the services or a selected service has a change in state. You can choose to use either SMTP or SNMP. Normally,you would only select SNMP if you already have SNMP configured for some other reason.
By default,SNMP traps are sent on maintenance transitions. If you use SNMP for monitoring,you can configure additional traps for other state transitions.
1.Become an administrator or assume a role that includes the Service Management rights profile.
2.Set notification parameters.
Example: The following command creates a notification that sends email when transactions go into the maintenance state
# /usr/sbin/svccfg setnotify -g maintenance mailto:[email protected]
NEW QUESTION # 105
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. Install a solaris10 branded zone directly from the Oracle Solaris 10 media.
- C. Migrate an existing 64-bit Solaris 10 system to a solaris10 branded non-global zone using the P2V process.
- D. 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.
- E. 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.
Answer: B,D
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 # 106
A user brian is configured to use the bash shell. His home directory is /export/home/brian, and contains a .profile and a .bashrc file. In the -profile, there are these lines: genius =ritchie export genius
In the .bashrc us this line: genius=kernighan
In /etc/profile are these lines: genius=thompson export genius
When brian logs in and asks for the value of genius, what will he find, and why?
- A. genius will be ritchie because .profile executes after .bashrc.
- B. geniuswill be ritchie, because that was the value exported in .profile.
- C. genius willbekernighan, because .bashrc executes after.profile.
- D. genius will be thompson because /etc/profile system settings always override local settings.
- E. genius will be ritchie because variable settings in .profile take precedence over variable settings in .bashrc.
Answer: E
NEW QUESTION # 107
You need to make sure that all of the software packages on your server are up to date. Without installing any updates, which two commands would display .my software updates that are available in the default Oracle repository?
- A. pkg info -r '*'
- B. pkg list -u
- C. pkg install -nv
- D. pkg search -u
- E. pkg update -nv '*'
- F. pkg verify -u '*'
Answer: A,B
Explanation:
Explanation/Reference:
Explanation:
A: the pgk list command display a list of packages in the current image, including state and other information. By default, package variants for a different architecture or zone type are excluded.
D: pkginfo displays information about software packages that are installed on the system (with the first synopsis, with -l) or that reside on a particular device or directory (with the second synopsis, with -r).
Without options, pkginfo lists the primary category, package instance, and the names of all completely installed and partially installed packages. It displays one line for each package selected.
With -r, retrieve the data from the repositories of the image's configured publishers. Note that you must specify one or more package patterns in this case.
NEW QUESTION # 108
The advantage of core tiles is that they allow you an opportunity to examine the cause of problems,so that they can be resolved.
However,core files must be managed because they_____.
- A. take up large amounts of disk space
- B. fill up swap space; this will begin to slow the system due to paging
- C. steal resources from the processor,slowing down system performance
- D. make numerous entries into the /var/adm/wtmpx file
- E. fill up swap space; this will begin to slow the system due to swaps
Answer: A
Explanation:
Part of the job of cleaning up heavily loaded file systems involves locating and removing files that have not been used recently. You can locate unused files by using the ls or find commands.
Other ways to conserve disk space include emptying temporary directories such as the directories located in /var/tmp or /var/spool,and deleting core and crash dump files.
Note: Core files are generated when a process or application terminates abnormally. Core files are managed with the coreadm command.
For example,you can use the coreadm command to configure a system so that all process core files are placed in a single system directory. This means it is easier to track problems by examining the core files in a specific directory whenever a process or daemon terminates abnormally.
NEW QUESTION # 109
Which two capabilities are provided by the OpenBoot PROM?
- A. starting the GRUB loader
- B. hardware testing and initialization
- C. booting from a disk or network
- D. a command to safely shut down the system
Answer: B,C
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 # 110
You log in to the system as user1, then switch user to root by using the su - command.
After entering the correct password, yon enter the following commands:
whoami;who am i;id
Which option correctly represents the output?
- A. Option A
- B. Option C
- C. Option D
- D. Option B
Answer: D
Explanation:
* The whoami utility displays your effective user ID as a name.
Here this would be root.
* who am i
The command who shows who is logged on.
Here this would be:
user1 console Dec 30 20:20
* The id utility displays the user and group names and numeric IDs, of the calling process, to the standard output. If the real and effective IDs are different, both are displayed, otherwise only the real ID is displayed.
Here this would be:
uid=0(root) gid=0(root)
Note:
Each UNIX proces has 3 UIDs associated to it. Superuser privilege is UID=0.
Real UID
--------
This is the UID of the user/process that created THIS process. It can be changed only if the running process has EUID=0.
Effective UID
-------------
This UID is used to evaluate privileges of the process to perform a particular action. EUID can be change either to RUID, or SUID if EUID!=0. If EUID=0, it can be changed to anything.
Saved UID
---------
If the binary image file, that was launched has a Set-UID bit on, SUID will be the UID of the owner of the file. Otherwise, SUID will be the RUID.
NEW QUESTION # 111
Which three of the components would degrade performance if used in a ZFS storage pool, and are not recommended configurations?
- A. a Solaris Volume Manager (SVM) volume
- B. a Veritas Volume Manager (VxVM) volume
- C. an EDI disk
- D. a LUN in a hardwareRAID array
- E. a disk slice from an SMI labeled disk
- F. a file on a UFS file system
Answer: A,B,F
Explanation:
A: ZFS also allows you to use UFS files as virtual devices in your storage pool. This feature is aimed primarily at testing and enabling simple experimentation, not for production use. The reason is that any use of files relies on the underlying file system for consistency. If you create a ZFS pool backed by files on a UFS file system, then you are implicitly relying on UFS to guarantee correctness and synchronous semantics. However, files can be quite useful when you are first trying out ZFS or experimenting with more complicated layouts when not enough physical devices are present. All files must be specified as complete paths and must be at least 64 Mbytes in size.
B, E: You can construct logical devices for ZFS using volumes presented by software-based volume managers, such as Solaris Volume Manager (SVM) or Veritas Volume Manager (VxVM). However, these configurations are not recommended. While ZFS functions properly on such devices, less-than-optimal performance might be the result.
Reference: Solaris ZFS Administration Guide, Managing ZFS Storage Pools
NEW QUESTION # 112
You are executing this command in the default shell:
sleep 5000 &
The system displays a number. This value is______.
- A. the priority of the /usr/bin/sleep process
- B. the process ID of the /usr/bin/sleep process
- C. the amount of memory allocated to the /usr/bin/sleep process
- D. the process group ID that includes the /usr/bin/sleep process
- E. the current number of instances of the /usr/bin/sleepprocess
- F. the process ID of the shell spawned to execute /usr/bin/sleep
Answer: F
Explanation:
If a command is terminated by the control operator '&', the shell executes the command asynchronously in a subshell. This is known as executing the command in the background. The shell does not wait for the command to finish, and the return status is 0 (true).
NEW QUESTION # 113
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:
Explanation/Reference:
Explanation:
Boot
With this form, boot loads and executes the program specified by the default boot arguments 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 # 114
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 C
- C. Option D
- D. Option B
- E. Option E
Answer: B
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 # 115
You are logged in to a Solaris 11 system as user jack. You issue the following sequence of commands:
Identify two correct statements.
- A. Your home directory is /root.
- B. Your UID is 1.
- C. You are running the shell specified for the account root.
- D. You have the effective privilege of the account root.
- E. Your GID is 10.
Answer: D,E
Explanation:
Explanation/Reference:
Explanation:
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.
NEW QUESTION # 116
You have completed configuring a zone named dbzone on your Solaris 11 server. The configuration is as following:
The global zone displays the following network information:
The zone has never been booted. Which three options correctly describe this zone?
- A. It is a whole root zone.
- B. The hostid is the same as the global zone.
- C. It is a sparse root zone.
- D. The zone uses a virtual network interface.
- E. It is a native zone.
- F. The zone shares the network interface with the host.
- G. It is an immutable zone.
- H. The IP address of the zone is 10.0.2.18.
Answer: B,F,G
Explanation:
C: Immutable Zones provide read-only file system profiles for solaris non-global zones.
Note that ip-type: exclusive:
Starting with OpenSolaris build 37 and Oracle Solaris 10 8/07,a default zone can be
configured as an "exclusive-IP zone" which gives it exclusive access to the NIC(s) that the
zone has been assigned. Applications in such a zone can communicate directly with the
NIC(s) available to the zone.
Note on zones:
After installing Oracle Solaris on a system,but before creating any zones,all processes run
in the global zone. After you create a zone,it has processes that are associated with that
zone and no other zone. Any process created by a process in a non-global zone is also
associated with that non-global zone.
Any zone which is not the global zone is called a non-global zone. Most people call non-
global zones simply "zones." Some people call them "local zones" but this is discouraged.
The default native zone file system model on Oracle Solaris 10 is called "sparse-root." This
model emphasizes efficiency and security at the cost of some configuration flexibility.
Sparse-root zones optimize physical memory and disk space usage by sharing some
directories,like /usr and /lib. Sparse-root zones have their own private file areas for
directories like /etc and /var. Whole-root zones increase configuration flexibility but increase
resource usage. They do not use shared file systems for /usr,/lib,and a few others.
There is no supported way to convert an existing sparse-root zone to a whole-root zone.
Creating a new zone is required.
NEW QUESTION # 117
Which command should you choose to display the current parameters for the FSS scheduler?
- A. prionctl -c FSS
- B. dispadmin - c FSS
- C. priocntl -c FSS -g
- D. dispadmin -c FSS -g
Answer: D
Explanation:
Explanation/Reference:
Explanation:
The dispadmin command displays or changes process scheduler parameters while the system is running.
-c class
Specifies the class whose parameters are to be displayed or changed. Valid class values are: RT for the real-time class, TS for the time-sharing class, IA for the inter-active class, FSS for the fair-share class, and FX for the fixed-priority class. The time-sharing and inter-active classes share the same scheduler, so changes to the scheduling parameters of one will change those of the other.
-g
Gets the parameters for the specified class and writes them to the standard output.
NEW QUESTION # 118
View the Exhibit.
After Installing the OS, you need to verify the network interface information. Which command was used to display the network interface information in the exhibit?
- A. netstat -a
- B. svcs -1 network/physical
- C. ipadm show-addr
- D. ifconfiq -a
Answer: C
Explanation:
'ipadm show-addr' displays all the configured addresses on the system.
Example: # ipadm show-addr ADDROBJ TYPE STATE ADDR lo0/v4 static ok 127.0.0.1/8 lo0/v6 static ok ::1/128
NEW QUESTION # 119
The crash dump notification on your server is:
Documentation states that there should be two core files for each crash dump in the /var/crash
directory named vmdump.0
Which command should you choose to display theses two files?
- A. dumpadm uncompressed
- B. dumpadm -z off
- C. savecore -f vmdump.0
- D. gunzip vmdump.0
Answer: C
Explanation:
Decompress using savecore -f vmdump.0
savecore - save a crash dump of the operating system
-f dumpfile Attempt to save a crash dump from the specified file instead of from the system's current dump device. This option may be useful if the information stored on the dump device has been copied to an on-disk file by means of the dd(1M) command.
NEW QUESTION # 120
Which command would you use from the bash shell to determine the total amount of physical memory installed in your Solaris system (x86 and SPARC)?
- A. prtdiag | grep -i memory
- B. vmstat
- C. sysdef | grep -i memory
- D. prtconf | grep -i memory
- E. uname -a
Answer: D
Explanation:
Explanation/Reference:
Explanation:
The prtconf command prints the system configuration information. The output includes the total amount of memory, and the configuration of system peripherals formatted as a device tree.
If a device path is specified on the command line for those command options that can take a device path, prtconf will only display information for that device node.
NEW QUESTION # 121
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. lo#
- B. el000g#
- C. nic#
- D. net#
- E. eth#
Answer: D
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 # 122
Which two are user definable OpenBoot parameters that can be set in the OpenBoot PROM?
- A. Default boot device
- B. Powering off the hardware
- C. Host ID
- D. Verbose hardware diagnostics
- E. IP address for the system console
- F. System date and time
Answer: A,D
Explanation:
The NVRAM chip stores user-definable system parameters, also referred to as NVRAM variables or EEPROM parameters. The parameters allow administrators to control variables such as the default boot device and boot command. The NVRAM also contains writeable areas for user-controlled diagnostics, macros, and device aliases. NVRAM is where the system identification information is stored, such as the host ID, Ethernet address, and time-of-day (TOD) clock.
Examples of NVRAM variables:
Variable Default Description boot-device disk or net
The device from which to start up.
diag-device net The diagnostic startup source device.
diag-file Empty string Arguments passed to the startup program in diagnostic mode.
diag-switch? false Whether to run in diagnostic mode
NEW QUESTION # 123
Oracle Solaris 11 limits access to the system with usernames and passwords The usernames are held in ___________, and the passwords are held in ___________.
Select the correct pair.
- A. /etc/passwd /etc/shadow
- B. /etc/security/policy.conf /etc/passwd
- C. /etc/shadow /etc/passwd
- D. /etc/security /etc/passwd
Answer: A
Explanation:
Explanation/Reference:
Explanation:
The /etc/passwd file contains basic user attributes. This is an ASCII file that contains an entry for each user. Each entry defines the basic attributes applied to a user.
/etc/shadow file stores actual password in encrypted format for user's account with additional properties related to user password i.e. it stores secure user account information. All fields are separated by a colon (:) symbol. It contains one entry per line for each user listed in /etc/passwd file.
NEW QUESTION # 124
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