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Oracle 1Z0-821試験は、Oracle Solaris 11システム管理でのスキルと知識を検証するための重要な認定試験です。この試験は、Oracle Solaris 11オペレーティングシステムのインストール、構成、トラブルシューティングなどの必須のシステム管理タスクを実行する能力を評価するように設計されています。
Oracle 1Z0-821 (Oracle Solaris 11 System Administration) 認定試験は、Oracle Solaris 11 オペレーティングシステム上で実行されるシステムの管理と管理に関するスキルと知識を検証したい IT プロフェッショナル向けに設計されています。この認定試験には、Oracle Solaris 11 オペレーティングシステムのインストール、設定、管理、ネットワーク、セキュリティ、仮想化など、幅広いトピックが含まれます。この試験は、候補者が実際の環境で Oracle Solaris 11 システム管理に関連するタスクを実行する能力をテストするように設計されています。
Oracle Solaris 11システム管理者試験に備えるために、候補者は、Oracleの公式学習資料、オンラインコース、練習問題など、さまざまなリソースを活用することができます。候補者は、勉強グループに参加したり、トレーニングセッションに出席したり、オンラインフォーラムに参加することで、試験のトピックや形式についてより良い理解を得ることができます。
質問 # 128
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. uid-0(root) gid=0(root) user1 console Dec 30 20:20 root
- B. user1 console Dec 30 20:20 root uid=0(root) gid=0(root)
- C. uid=0(root) gid=0(root) root user1 console Dec 30 20:20
- D. root user1 console Dec 30 20:20 uid=0(root) gid=0(root)
正解：D
解説：
* 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 dis-
played.
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.
質問 # 129
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
正解：A
解説：
Explanation/Reference:
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:[email protected] 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:[email protected] 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.
質問 # 130
After installing the OS,you boot the system and notice that the syslogd daemon is not accepting messages from remote systems.
Which two options should you select to modify the syslogd daemon configuration so that it accepts messages from remote systems?
- A. svccfg -s svc:/system/system-log setprop config/log_from_remote=trueRestart the syslogd daemon.
- B. Set the following parameter in the /etc/syslogd.conf file: LOG_FROM_REMOTE= YESRestart the syslogd daemon.
- C. svcadm enable svc:/system/system -log/config/log_from_remoteRestart the syslogd daemon.
- D. Set the following parameter in the /etc/default/syslogd file: LOG_FROM_REMOTE=YESRestart the syslogd daemon.
- E. svccfg -s svc:/system/system -log setprop start/exec= "syslogd -t"Restart the syslogd daemon.
正解：A、B
解説：
B: The /etc/default/syslogd file contains the following default parameter settings. See FILES.
LOG_FROM_REMOTE Specifies whether remote messages are logged. LOG_FROM_REMOTE=NO is equivalent to the -t command-line option. The default value for LOG_FROM_REMOTE is YES.
質問 # 131
Your system is assigned an IP address object 192.168.0.222/24. However,the net mask-expressed as four octets-is required. Which is the correct netmask?
- A. 255.0.0.0
- B. 255.255.255.0
- C. 255.255.255.255
- D. 255.255.255.24
- E. 255.255.0.0
正解：B
解説：
A 24-bit network mask is expressed as 255.255.255.0.
質問 # 132
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 that was the value exported in .profile.
- B. genius will be ritchie because variable settings in .profile take precedence over variable settings in .bashrc.
- C. genius will be thompson because /etc/profile system settings always override local settings.
- D. genius will be ritchie because .profile executes after .bashrc.
- E. genius will be kernighan, because .bashrc executes after .profile.
正解：B
質問 # 133
Consider the following commands:
What is displayed when this sequence of commands is executed using the bash shell?
- A. cat: cannot open file1 Hello, World
- B. bash: syntax error near unexpected token '&&'
- C. cat: cannot open file1 Hello, world
- D. Hello, world
- E. cat: cannot open file1
正解：E
解説：
First line (rm file1) deletes/removes file1.
Second line captures the text into file2.
The first part of line 3 (cat file1) fails as the file1 does not exist.
The && (AND) operator will ensure that the third line fails. The result of line 3 will be the result of
first part of line 3 (cat file1).
Note: cat - concatenate files and print on the standard output
Note #1: A list is a sequence of one or more pipelines separated by one of the operators ';', '&',
'&&', or '||', and optionally terminated by one of ';', '&', or a newline.
Of these list operators, '&&' and '||' have equal precedence, followed by ';' and '&', which have
equal precedence.
AND and OR lists are sequences of one or more pipelines separated by the control operators '&&'
and '||', respectively. AND and OR lists are executed with left associativity.
An AND list has the form
command1 && command2
command2 is executed if, and only if, command1 returns an exit status of zero.
An OR list has the form
command1 || command2
command2 is executed if, and only if, command1 returns a non-zero exit status.
The return status of AND and OR lists is the exit status of the last command executed in the list.
Note #2 (on exit status): Zero means command executed successfully, if exit status returns non-
zero value then your command failed to execute.
Reference: Bash Reference Manual, Lists of Commands
質問 # 134
When speaking in an Oracle Support Engineer, you are asked to verify the version of the Solaris 11 build currently running on your system. Which command would display the Solaris 11 build version currently running on your system?
- A. prtconf | grep -i update
- B. cat /etc/release
- C. pkg info all
- D. cat /etc/update
- E. pkg info entire
正解：B
解説：
Which Solaris release you are running on your system can be determined using the following command:
cat /etc/release
This will tell you which release you are running and when it was released. The more recent your system, the more info is contained in this file.
Example: # cat /etc/release Oracle Solaris 10 8/11 s10s_u10wos_17b SPARC Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved. Assembled 23 August 2011
質問 # 135
Review the information taken from your server:
Which option describes the command used to create these snapshots of the root file system?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
正解：A
解説：
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.
質問 # 136
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-imemory
- B. vmstat
- C. sysdef|grep-imemory
- D. prtconf|grep-imemory
- E. uname -a
正解：D
解説：
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.
Reference: man prtconf
質問 # 137
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. Start the iSCSI target daemon on this system.
- B. The COMSTAR feature is not supported on the x86 platform. The feature is supported only on the SPARC platform.
- C. Use the iscsitadm command on the x86 platform when configuring an iSCSI target.
- D. Install the storage-server group package on this system.
正解：D
解説：
Explanation/Reference:
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.
質問 # 138
After installing the OS, you boot the system and notice that the syslogd daemon is not accepting messages from remote systems.
Which two options should you select to modify the syslogd daemon configuration so that it accepts messages from remote systems?
- A. svccfg -s svc:/system/system-log setprop config/log_from_remote=trueRestart the syslogd daemon.
- B. Set the following parameter in the /etc/syslogd.conf file: LOG_FROM_REMOTE= YESRestart the syslogd daemon.
- C. Set the following parameter in the /etc/default/syslogd file:
LOG_FROM_REMOTE=YESRestart the syslogd daemon. - D. svcadm enable svc:/system/system -log/config/log_from_remoteRestart the syslogd daemon.
- E. svccfg -s svc:/system/system -log setprop start/exec= "syslogd -t"Restart the syslogd daemon.
正解：A、B
解説：
B: The /etc/default/syslogd file contains the following default parameter settings. See FILES.
LOG_FROM_REMOTE
Specifies whether remote messages are logged. LOG_FROM_REMOTE=NO is equivalent to the -t command-line option. The default value for LOG_FROM_REMOTE is YES.
質問 # 139
Which three statements accurately describe the Automated Installation (AI) client?
- A. If the AI client does not match any criteria to use a custom manifest or script, the automated installation aborts.
- B. Only the default.xml file is used as the default AT client manifest.
- C. Any manifest or script in a service can be designated to be the default for that service.
- D. If the AI client does not match any criteria to use a custom manifest or script, the default manifest is used.
- E. If a client system does not use any SC profile, then the install server will use the default SC profile.
- F. If a client system does not use any SC profile, then an interactive tool opens on that client at first boot after that client installation to complete the configuration of that client.
正解：C、D、F
解説：
Each client uses one and only one AI manifest to complete its installation. The AI manifest is selected for a client according to the following algorithm:
* If no custom AI manifests are defined for this install service, the default AI manifest is used. The default AI manifest is not associated with any client criteria etc.
Each client can use any number of system configuration profiles. If a client system does not use any configuration profile, then an interactive tool opens on that client at first boot after that client installation to complete the configuration of that client.
質問 # 140
Which option would you choose to display the kernel revision level for your operating system?
- A. uname -a
- B. cat /etc/motd
- C. cat. /etc/release
- D. pkg info kernel
- E. banner (issued from the OpenBoot Prom)
正解：A
解説：
Explanation/Reference:
Explanation:
質問 # 141
zone1 is a non-global zone that has been configured and installed.
zone1 was taken down for maintenance, and the following command was run:
zoneadm -z zone1 mark incomplete
The following information is displayed when listing the zones on your system:
Which task needs to be performed before you can boot zone1?
- A. The zone needs to be installed.
- B. The zone needs to be brought to the ready state.
- C. The zone needs to be uninstalled and reinstalled.
- D. The zone needs to be brought to the complete state.
正解：C
解説：
Explanation/Reference:
Explanation:
If administrative changes on the system have rendered a zone unusable or inconsistent, it is possible to change the state of an installed zone to incomplete.
Marking a zone incomplete is irreversible. The only action that can be taken on a zone marked incomplete is to uninstall the zone and return it to the configured state.
質問 # 142
Review the information taken from your server:
Which option describes the command used to create these snapshots of the root file system?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
正解：A
解説：
Explanation/Reference:
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.
質問 # 143
To confirm the IP addresses and netmasks have been correctly configured on the network interfaces,which command(s) should you use?
- A. ipadm show-config
- B. ipadm show-addr
- C. ipadm show-ip ipadm show-mask
- D. ipadm show-addr ipadm show-mask
- E. ipadm show-nic
- F. ipadm show-if
正解：B
解説：
Show address information,either for the given addrobj or all the address objects configured on the specified interface,including the address objects that are only in the persistent configuration.
Example: # ipadm show-addr ADDROBJ TYPE STATE ADDR lo0/v4 static ok 127.0.0.1/8 lo0/v6 static ok ::1/128
質問 # 144
Consider the following rule file for use with the Basic Audit Reporting Tool (BART).
CHECK all
IGNORE dirmtime
/etc/security
/etc/notices
IGNORE contents
/export/home
IGNORE mtime size contents
/var
CHECK
You are using BART to detect inappropriate changes to the file system.
Identify the two correct statements describing the attributes recorded.
- A. /export/home/kate/.profile Attributes: uid gid mode acl dirmtime
- B. /var/dhcp Attribute: size uid gid mode acl
- C. /export/home/rick/.profile Attributes: size uid gid mode acl mtime contents
- D. /var/spool/mqueue Attribute: size uid gid mode acl dirmtime
- E. /etc/security/exec_attr Attribute: size uid mode acl mtime devnode
- F. /etc/hosts Attributes: size uid gid mode acl intime dest
正解：C、E
解説：
D: According to line /etc/security
F: According to line /export/home
Not E: According to line IGNORE dirmtime
Note: In default mode, the bart compare command, as shown in the following example, checks all the files installed on the system, with the exception of modified directory timestamps (dirmtime):
CHECK all
IGNORE dirmtime
Note 2: The Basic Audit Reporting Tool (BART) feature of Oracle Solaris enables you to comprehensively validate systems by performing file-level checks of a system over time. By creating BART manifests, you can easily and reliably gather information about the components of the software stack that is installed on deployed systems.
BART is a useful tool for integrity management on one system or on a network of systems.
質問 # 145
Examine this command and its output:
$ zfs list -r -t all tank
Name USED AVAIL REFER MOUNTPOINT
tank 2.41G 2.43G 32K /tank
tank/database 2.41G 2.43G 2.41G /tank/database
tank/[email protected] 20K - 2.00G -
Next you execute:
# zfs destroy tank/database
Which statement is true about the result of executing this command?
- A. It fails because the tank/[email protected] snapshot depends on the tank/database dataset.
- B. It destroys the tank/database dataset.
- C. It destroys tank/database and all descendant datasets.
- D. It fails because the tank/database data set is not empty.
- E. It fails because the tank/[email protected] clone depends on the tank/database dataset.
正解：A
質問 # 146
Consider the following commands:
What is displayed when this sequence of commands is executed using the bash shell?
- A. cat: cannot open file1: No such file or directory
- B. bash: syntax error near unexpected token '| |'
- C. Hello, world
- D. cat: cannot open file1: No such file or directory Hello, world
- E. bash: syntax error broker pipe
正解：D
質問 # 147
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. zpooladd pool1mirrorc3t5d0 c3t6d0
- B. zpoolattachpool1c3t3d0 c3c5d0; zpoo1attach pool1c3t4d0 c3t6d0
- C. zpool addraidz pool1c3t5d0 c3t6d0
- D. zpoolattach pool1c3t5d0 c3t6d0
- E. zpoolmirrorpool1c3t5d0c3t6d0
正解：D
解説：
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.
Reference: Converting a Non-Redundant ZFS Storage Pool to a Mirrored ZFS Storage Pool
Reference: man zpool
質問 # 148
The following image properties are displayed on your system:
Which two options describe the boot environment policy property that is currently set for this image?
- A. A reboot is not required after a package operation.
- B. For package operations that require a reboot, this policy creates a new BE set as active on the next boot.
- C. If a BE is created, do not set it as the active BE on the next boot
- D. A reboot is required for all package operations
- E. Do not create a new BE. The install, update, uninstall, or revert operation is not performed if a new BE is required.
- F. All package operations are performed in a new BE set as active on the next boot.
正解：B、D
解説：
Image properties described below.
* be-policy
Specifies when a boot environment is created during packaging operations. The following values are allowed:
/ default
Apply the default BE creation policy: create-backup.
/ always-new (D, F)
Require a reboot for all package operations (D) by performing them in a new BE set as active on the next boot (F). A backup BE is not created unless explicitly requested.
This policy is the safest, but is more strict than most sites need since no packages can be added without a reboot.
質問 # 149
Which two accurately describe the Solaris IPS repository?
- A. It is an ISO image of the Solaris installation media.
- B. The packages in a catalog are associated with a specific publisher.
- C. All packages within an IPS package repository reside in a catalog.
- D. It contains a collection of software packages.
- E. It contains a collection of operating system patches.
正解：B、D
解説：
Image Packaging System (IPS) is a new network based package management system included in Oracle Solaris 11. It provides a framework for complete software lifecycle management such as installation, upgrade and removal of software packages. IPS also enables you to create your own software packages, create and manage package repositories, and mirror existing package repositories.
Oracle Solaris software is distributed in IPS packages. IPS packages are stored in IPS package repositories, which are populated by IPS publishers.
E: The following command displays property information about the local repository.
$ pkgrepo get -s /export/repoSolaris11
SECTION PROPERTY VALUE publisher prefix solaris repository description This\ repository\ serves\ a\ copy\ of\ the\ Oracle\ Solaris\ 11\ Build\ 175b\ Package\ Repository.
repository name Oracle\ Solaris\ 11\ Build\ 175b\ Package\ Repository
repository version 4
The value of the publisher prefix specifies that solaris is to be used in the following cases:
When more than one publisher's packages are present and no publisher is specified in the package name in the pkg command When packages are published to the repository and no publisher is specified.
質問 # 150
Identify the Automated Installer's (AI) equivalent to jumpStart's finish scripts and sysidcfg files.
- A. installadm create-service
- B. SMF system configuration profile files
- C. Installadm create - client
- D. Manifest files
- E. svccfg - s application/pkg/server setprop sysidcfg
- F. IPS software package repository
正解：B
解説：
Explanation/Reference:
Explanation:
Comparing sysidcfg File Keywords to System Configuration Profile Directives The following table compares sysidcfg file keywords with example AI system configuration profile specifications.
sysidcfg File Keyword
System Configuration Profile Directives
Etc.
質問 # 151
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