1Z0-821 | The Up to date Guide To 1Z0-821 exam dumps
Q51. - (Topic 1)
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. zoneadm list –icv dbzone
B. zones tat –c summary dbzone
C. zonecfg –z dbzone info
D. zonecfg –icv dbzone info
Answer: C
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
Q52. - (Topic 2)
In an effort to reduce storage space on your server,you would like to eliminate duplicate copies of data in your server’s ZFS file systems.
How do you specify that pool1/data should not contain duplicate data blocks (redundant data) on write operations?
A. zfs create - o compression=on pool1/data
B. zpool create -o deduplication =on pool1; zfs create pool1/data
C. zfs create - o deduplication=on pool1; zfs create pool1/data
D. zfs create - o dedupratio=2 pool1/data
E. zfs create - o dedup=on pool1/data
Answer: E
Explanation:
ZFS Deduplication Property Solaris Express Community Edition,build 129: In this Solaris release,you can use the deduplication property to remove redundant data from your ZFS file systems. If a file system has the dedup property enabled,duplicate data blocks are removed synchronously. The result is that only unique data is stored and common components are shared between files.
You can enable this property as follows:
# zfs set dedup=on tank/home
Q53. - (Topic 2)
Review the zonestat command:
zonestate - q physical - memory -R high -z -p -p “zones” 10 24h 60m
Select the option that correctly describes the information that is displayed by this command.
A. It is a sample of dbzone’s physical memory usage taken every hour over a 24-hour period.Only the top 10 samplings of peak memory usage are displayed. All other utilization data is eliminated.
B. It is a sample of dbzone’s CPU,virtual memory,and networking utilization.Physical memory is executed from the report.The sampling is taken every 10 minutes over a 24-hour period and peak utilization id displayed each hour.
C. It is a sample of dbzone’s CPU,virtual memory,and networking utilization.Physical memory is executed from the report.The sampling is taken every 10 minutes over a 24-hour period and displayed each hour.
D. It is a sample of dbzone’s physical memory usage taken every 10 seconds and 24-hour period.Only peak virtual memory usage and CPU utilization are displayed each hour.All other Utilization data is eliminated.
E. It is a sample of dbzone’s physical memory usage taken every 10 seconds and 24-hour period.Only peak memory usage is displayed each hour.All other utilization data is eliminated.
Answer: D
Explanation:
*
(Not A,B,C): interval (here 10 seconds): Specifies the length in seconds to pause between each interval report.
*
duration (here 24 h)
* -R report[,report] (here high) Print a summary report.
High Print a summary report detailing the highest usage of each resource and zone during any interval of the.zonestat.utility invocation.
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.
The default output is a summary of cpu,physical,and virtual memory utilization. The -r option can be used to choose detailed output for specific resources.
Q54. - (Topic 1)
Which two SMF milestones can be specified at boot time?
A. none
B. network
C. all
D. config
E. unconfig
F. devices
Answer: A,C
Explanation:
The milestones that can be specified at boot time are
none single-user multi-user multi-user-server all
Q55. - (Topic 2)
Which operation will fail if the DNS configuration is incorrect?
A. domainname
B. ping localhost.
C. ping 192.168.1.1
D. ping 23.45.82.174
E. ping www.oracle.com.
F. cat /etc/resolv.conf
Answer: E
Explanation:
www.oracle.com would have to be resolved to an IP name by the domain name service.
Q56. - (Topic 2)
Review the ZFS dataset output that is displayed on your system:
Which four correctly describe the output?
A. /data/file4 has been added.
B. The link /data/file3 has been added.
C. /data/file3 has been renamed to /data/file13.
D. /data/file4 has been modified and is now larger.
E. /data/file1 has been deleted.
F. /data/file1 has been modified and is now smaller.
G. /data/file5 has been modified.
H. /data/file3 (a link) has been removed.
Answer: A,C,E,G
Explanation:
A: + Indicates the file/directory was added in the later dataset
C: R Indicates the file/directory was renamed in the later dataset
E: - Indicates the file/directory was removed in the later dataset
G: M Indicates the file/directory was modified in the later dataset
Note: Identifying ZFS Snapshot Differences (zfs diff)
You can determine ZFS snapshot differences by using the zfs diff command.
The following table summarizes the file or directory changes that are identified by the zfs diff command.
File or Directory Change Identifier
*
File or directory is modified or file or directory link changed M
*
File or directory is present in the older snapshot but not in the newer snapshot —
*
File or directory is present in the newer snapshot but not in the older snapshot +
*
File or directory is renamed R
Q57. - (Topic 1)
You have installed the SMF notification framework to monitor services. Which command is used to set up the notifications for a particular service?
A. svccfg
B. svcadm
C. setnotify
D. smtp-notify
Answer: A
Explanation:
How to Set Up Email Notification of SMF Transition Events 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 1:
The following command creates a notification that sends email when transactions go into
the maintenance state.
# /usr/sbin/svccfg setnotify -g maintenance mailto:sysadmins@example.com
Example 2:
The following command creates a notification that sends email when the switch service
goes into the online state.
# /usr/sbin/svccfg -s svc:/system/name-service/switch:default setnotify to-online
mailto:sysadmins@example.com
Note: The svccfg command manipulates data in the service configuration repository. svccfg
can be invoked interactively,with an individual subcommand,or by specifying a command
file that contains a series of subcommands.
Changes made to an existing service in the repository typically do not take effect for that
service until the next time the service instance is refreshed.
Q58. - (Topic 2)
Solaris 11 includes a redesigned software packaging model: the Image Packaging system.
Which three describe advantages of the Image Packaging System over the previous Solaris 10 SVR4 packaging model?
A. Eliminates patching of the software package
B. Makes the patching process more efficient with less downtime
C. Eliminates OS version upgrade
D. Allows for the installation of the OS without a local DVD or installation server
E. Allows the use of a repository mirror to speed up package operation
F. Allows users to publish their own software package in a software repository
Answer: A,D,F
Explanation:
A: In contrast to the SVR4 packaging model used in earlier Oracle Solaris releases,IPS eliminates the need for patching.
Q59. - (Topic 1)
Which two options are characteristics of a fast reboot?
A. A fast reboot bypasses grub.
B. A fast reboot cannot be used after a system panic on the x86 platform.
C. A fast reboot can only be executed on the SPARC platform when the config/fastreboot_default property for the svc:/system/boot-config:default service is set to true.
D. A fast reboot uses an in-kernel boot loader to load the kernel into memory.
E. A fast reboot is the default on all platforms.
Answer: C,D
Explanation:
C: To change the default behavior of the Fast Reboot feature on the SPARC platform,so that a fast reboot is automatically performed when the system reboots,see below.
The following example shows how to set the property's value to true on the SPARC platform,so that a fast reboot is initiated by default:
# svccfg -s "system/boot-config:default" setprop config/fastreboot_default=true # svcadm refresh svc:/system/boot-config:default
D: Fast Reboot implements an in-kernel boot loader that loads the kernel into memory and
then switches to that kernel.
The firmware and boot loader processes are bypassed,which enables the system to reboot
within seconds.
The Fast Reboot feature is managed by 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. When the config/fastreboot_default property is set to true,the system performs a fast reboot automatically,without the need to use the reboot -f command. This property's value is set to true on the x86 platform. For task-related information,including how to change the default behavior of Fast Reboot on the SPARC platform,see Accelerating the Reboot Process on an x86 Based System.
Note: One new feature,called Fast Reboot,will allow the system to boot up without doing the routine set of hardware checks,a move that can make system boot times up to two-and-a-half times faster,Oracle claimed. This feature can be handy in that an administrator applying a patch or software update across thousands of Solaris deployments can reboot them all the more quickly.
Q60. - (Topic 2)
You notice that the /var/.dm/messages file has become very large. Typically,this is managed by a crontab entry. Which entry should be in the root's crontab file?
A. 10 3 * * * /usr/adm/messages
B. 10 3 * * * /usr/sbin/logadm
C. 10 3 * * * /usr/sbin/syslogrotate
D. 10 3 * * * /usi/sbin/logrotate
E. 10 3 * * * /usr/sbin/messages
Answer: B
Explanation:
This example shows how to display the default root crontab file.
$ suPassword:
# crontab -l #ident "@(#)root 1.19 98/07/06 SMI" /* SVr4.0 1.1.3.1 */ # # The root crontab should be used to perform accounting data collection. # # 10 3 * * * /usr/sbin/logadm 15 3 * * 0 /usr/lib/fs/nfs/nfsfind 30 3 * * * [ -x /usr/lib/gss/gsscred_clean ] && /usr/lib/gss/gsscred_clean #10 3 * * * /usr/lib/krb5/kprop_script ___slave_kdcs___