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Oracle 1Z0-821 Exam Syllabus Topics:
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NEW QUESTION 79
New features wore added to ZFS in Oracle Solaris11. Your justification to upgrade from Solaris10 to oracle Solaris11 is that it will be possible to take advantage of the enhancements that were made to ZFS.
Identify the three ZFS functions and features that are included in Oracle Solaris 11, but not in Solaris 10.
- A. Ability for ZFS to detect and remove redundant data from the tile system
- B. Ability to split a mirrored ZFS storage pool
- C. elimination of the swap file system when using ZFS on the root disk
- D. Shadow Data Migration
- E. Encrypted ZFS datasets
- F. Ability to use ZFS on the boot drive and boot to a ZFS root file system.
Answer: A,E,F
Explanation:
A: ZFS encryption was introduced in ZFS Pool Version Number 30, Solaris Nevada
b149.
Filesystem encryption since Solaris 11 Express
B: Deduplication was introduced in ZFS Pool Version Number 21, Solaris Nevada b128.
E: Booting From a ZFS Root File System Both SPARC based and x86 based systems use the new style of booting with a boot archive, which is a file system image that contains the files required for booting. When a system is booted from a ZFS root file system, the path names of both the boot archive and the kernel file are resolved in the root file system that is selected for booting.
Reference: Oracle Solaris ZFS Administration Guide, Booting From a ZFS Root File System
NEW QUESTION 80
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. You will be prompted to configure the network interface after the initial login.
- B. The network/physical service is offline.
- C. You cannot log in from the console as root. You must first log in as a user and then su to
root account. - D. The root user can log in from the console login.
- E. NWAM will be used to configure the network interface.
Answer: B,D
NEW QUESTION 81
You are planning group names for a new system. You decide to use a numbering convention that includes the year and month the project began, to form the group number and name for work associated with that project.
So, for example, a project targeted to begin in January, 2013 would have the number (name):
201301(Pr20l301) What are the two problems with your plan?
- A. Group names should be all lowercase.
- B. Group names may not contain a numeric character
- C. Group names may be no longer than 7 characters.
- D. Group numbers should not be larger than 60000.
Answer: A,D
Explanation:
C: The Group ID (GID) field contains the group's numerical ID. GIDs can be assigned whole numbers between 100 and 60000.
D: Group names contain only lowercase characters and numbers.
Reference: Setting Up Fields in the Group Database
NEW QUESTION 82
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. The network is being utilized 100% with no physical bandwidth remaining.
- B. dbzone is using 0.21% of the global zone's total CPU.
- C. dbzone is using 0.21% of the total CPU resource available in the zone's processor set.
- D. dbzone is using 2.37% of the global zone's total virtual memory.
- E. dbzone is using 5.48% of the total physical memory that has been allocated to the zone.
Answer: C,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 83
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. You cannot log in from the console as root. You must first log in as a user and then su to root account.
- B. You will be prompted to configure the network interface after the initial login.
- C. The network/physical service is offline.
- D. The root user can log in from the console login.
- E. NWAM will be used to configure the network interface.
Answer: C,D
NEW QUESTION 84
The core dump configuration for your system is:
A user is running a process in the global zone and the process crashes. The process information is:
User1 2663 2618 0 17:46:42 pts/2 0:00 /usr/bin/bash
The server host name is: zeus
What will the per-process core file be named?
- A. /var/core/core.bash.2663
- B. core.bash.2663.global
- C. core.bash.2663.zeus
- D. /var/core/core.bash.2663.global
Answer: A
Explanation:
Note the first line:
global core file pattern: /globalcore/core.%f.%p
The program name is bash
The runtime process ID is 2663
Note: By default,the global core dump is disabled. You need to use the coreadm command
with the -e global option to enable it. The -g option causes the command to append the
program name(%f) and the runtime process ID (%p) to the core file name.
NEW QUESTION 85
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. All package operations are performed in a new BE set as active on the next boot.
- B. For package operations that require a reboot, this policy creates a new BE set as active on the next boot.
- C. A reboot is required for all package operations
- D. If a BE is created, do not set it as the active BE on the next boot
- E. Do not create a new BE. The install, update, uninstall, or revert operation is not performed if a new BE is required.
- F. A reboot is not required after a package operation.
Answer: B,C
Explanation:
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.
NEW QUESTION 86
User jack makes use of the bash shell; his home directory is/export/home/jack.
What is the correct setting of umask, and where should it be set, to allow jack to create a shell script using the vi editor, that is executable by default?
- A. umask value of 0002 set in /etc/profile
- B. umask value of 0722 set in /etc/profile
- C. It is not possible to make a script executable without using the chmod command.
- D. umask value of 0002 set in /export/home/jack/.bashrc
- E. umask value of 0722 set In /export/home/jack/.bashrc
Answer: A
Explanation:
The user file-creation mode mask (umask) is use to determine the file permission for newly created files. It can be used to control the default file permission for new files. It is a four-digit octal number. You can setup umask in /etc/bashrc or /etc/profile file for all users. By default most Unix distro set it to 0022 (022) or 0002 (002).
1.The default umask 002 used for normal user. With this mask default directory permissions are
775 and default file permissions are 664.
2.The default umask for the root user is 022 result into default directory permissions are 755 and
default file permissions are 644.
3.For directories, the base permissions are (rwxrwxrwx) 0777 and for files they are 0666 (rw-rw-
rw).
In short,
1.A umask of 022 allows only you to write data, but anyone can read data.
2.A umask of 077 is good for a completely private system. No other user can read or write your
data if umask is set to 077.
3.A umask of 002 is good when you share data with other users in the same group. Members of
your group can create and modify data files; those outside your group can read data file, but
cannot modify it. Set your umask to 007 to completely exclude users who are not group members.
NEW QUESTION 87
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 D
- D. Option C
Answer: A
Explanation:
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.
NEW QUESTION 88
To confirm the IP addresses and netmasks have been correctly configured on the network interfaces, which command(s) should you use?
- A. ipadm show-if
- B. ipadm show-addr
ipadm show-mask - C. ipadm show-config
- D. ipadm show-nic
- E. ipadm show-ip
ipadm show-mask - F. ipadm show-addr
Answer: F
Explanation:
Explanation/Reference:
Explanation:
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
NEW QUESTION 89
You are logged in as root to a newly installed Solaris 11 system. You issue the command useradd -d,and then examine the /usr/sadm/defadduser file. This file includes the entry defshell=/bin/sh. Which shell will now be the default for the next account created?
- A. bash shell
- B. C shell
- C. korn shod
- D. bourne shell
Answer: A
Explanation:
Oracle Solaris 11 introduces user environment and command-line argument changes that include the following:
*Shell changes - The default shell,/bin/sh,is now linked to ksh93. The default user shell is the Bourne-again (bash) shell.
*The legacy Bourne shell is available as /usr/sunos/bin/sh.
*The legacy ksh88 is available as /usr/sunos/bin/ksh from the shell/ksh88 package.
*Korn shell compatibility information is available in /usr/share/doc/ksh/COMPATIBILITY.
NEW QUESTION 90
alice is a user account used by Alice on a Solaris 11 system.
sadmin is a role account on the same system.
Your task is to add the command /usr/sbin/cryptoadm to the Network management profile, so that Alice can execute it, while assuming the sadmin role.
Select the three activities necessary to accomplish this.
- A. Run the command profiles alice to ensure that the Alice has permissions to access the Network management profile.
- B. To the file /etc/security/auth_attr, add the line:Network Management:
solaris:cmd:RO::/usr/sbin/cryptoadm:euid=0 - C. To the file /etc/security/exec_attr.d/local-entriies, add the line:Network Management:
solaris:cmd:RO::/usr/sbin/cryptoadm:euid=0 - D. Run the roles alice to ensure that alice may assume the role sadmin.
- E. Run the command profiles "Network management" to ensure that the Network management profile includes the sadmin role.
- F. Run the command profiles sadmin to ensure that the role sadmin includes the network Management profile.
- G. To the file /etc/security/prof_attr, add the line: Network Management:
solaris:cmd:RO::/usr/sbin/cryptoadm:euid=0
Answer: C,D,E
Explanation:
C: /etc/security/exec_attr is a local database that specifies the execution attributes associated with profiles. The exec_attr file can be used with other sources for execution profiles, including the exec_attr NIS map and NIS+ table.
A profile is a logical grouping of authorizations and commands that is interpreted by a profile shell to form a secure execution environment.
NEW QUESTION 91
Examine the following command sequence: Which three are true?
- A. User jill, a member of the group other, cannot delete testfile.
- B. User jill, a member of the group other, can make a copy of testfile in dira.
- C. User oracle, not a member of the group other, can do a short listing (1s) of dirb.
- D. User jill, a member of the group other, can do a long listing (is -1) of user jack's home directory.
- E. User jill, a member of the group other, can edit the data content of testfile.
- F. User oracle, not a member of the group other, cannot execute the shell script.
Answer: A,B,E
NEW QUESTION 92
A user account must be a member of a primary group,and may also be a member of one or more secondary groups. What is the maximum total number of groups that one user can concurrently belong to?
- A. The number of groups one user can concurrently belong to is unlimited in Solaris 11.
- B. 0
- C. 1
- D. 2
- E. 3
- F. 4
- G. 5
Answer: C
Explanation:
Each user belongs to a group that is referred to as the user's primary group. The GID
number,located in the user's account entry within the /etc/passwd file,specifies the user's
primary group.
Each user can also belong to up to 15 additional groups,known as secondary groups. In
the /etc/group file,you can add users to group entries,thus establishing the user's
secondary group affiliations.
Note (4 PSARC/2009/542):
his project proposes changing the maximum value for NGROUPS_MAX
from 32 to 1024 by changing the definition of NGROUPS_UMAX from 32
to 1024.
The use for a larger number of groups is described in CR 4088757,
particular in the case of Samba servers and ADS clients; the Samba servers map every SID to a Unix group. Users with more than 32 groups SIDs are common. We've seen reports varying from "64 is enough","128 is absolutely enough" and "we've users with more 190 group SIDS).
NGROUPS_MAX as defined by different Unix versions are as follows (http://www.j3e.de/ngroups.html):
Linux Kernel >= 2.6.3 65536 Linux Kernel < 2.6.3 32 Tru64 / OSF/1 32 IBM AIX 5.2 64 IBM AIX 5.3 ... 6.1 128 OpenBSD,NetBSD,FreeBSD,Darwin (Mac OS X) 16 Sun Solaris 7,8,9,10 16 (can vary from 0-32)
HP-UX 20 IRIX 16 (can vary from 0-32) Plan 9 from Bell Labs 32 Minix 3 0 (Minix-vmd: 16) QNX 6.4 8
NEW QUESTION 93
Which files must be edited in order to set up logging of all failed login attempts?
- A. /var/adm/loginlog, /var/adm/authlog, /etc/syslog.conf
- B. /etc/default/login, /var/adm/authlog, /var/adm/loginlog
- C. /etc/default/login, /var/adm/authlog, /etc/syslog.conf
- D. /etc/default/login, /var/adm/loginlog, /etc/syslog.conf
Answer: C
Explanation:
This procedure captures in a syslog file all failed login attempts.
1. Set up the /etc/default/login file with the desired values for SYSLOG and SYSLOG_FAILED_LOGINS Edit the /etc/default/login file to change the entry. Make sure that SYSLOG=YES is uncommented.
2. Create a file with the correct permissions to hold the logging information.
Create the authlog file in the /var/adm directory.
3. Edit the syslog.conf file to log failed password attempts.
Send the failures to the authlog file.
NEW QUESTION 94
Which two accurately describe the Solaris IPS repository?
- A. It contains a collection of operating system patches.
- B. It contains a collection of software packages.
- C. All packages within an IPS package repository reside in a catalog.
- D. The packages in a catalog are associated with a specific publisher.
- E. It is an ISO image of the Solaris installation media.
Answer: B,D
Explanation:
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.
NEW QUESTION 95
Identify the correctly matching pair of equivalent functionality of JumpStart and Automated installer (AI).
- A. JumpStart: add_Install_clientAI: SMF system configuration profile files
- B. JumpStart: setup_serverAI: installadm create-service
- C. JumpStart: finish scripts and sysidsfg filesAI: manifest files
- D. JumpStart: begin script AI: package repository
Answer: B
Explanation:
Explanation/Reference:
Explanation:
JumpStart: Use the setup_install_server(1M) command.
AI: Use the installadm create-service command.
NEW QUESTION 96
user1 has a disk quota of 0.5 MB. The user attempts to run the following command on a file called .bigfile that is 495 KB in size:
cp bigfile /tmp
Will the command execute successfully?
- A. No. The command will fail because it will cause him to exceed his user quota.
- B. Yes. Quotas do not include any of the system files such as /tmp /swap.
- C. No. A user cannot place files into the /tmp directory.
- D. Yes. The quota is set at the directory level,not the user level.
Answer: B
Explanation:
UFS quotas enable system administrators to control the size of file systems. Quotas limit the amount of disk space and the number of inodes,which roughly corresponds to the number of files,that individual users can acquire. For this reason,quotas are especially useful on the file systems where user home directories reside. As a rule,the public and /tmp file systems usually do not benefit significantly by establishing quotas.
Note: The cp command copies files and directories.
NEW QUESTION 97
You are troubleshooting interface net3 and you enter the following sequence of commands:
Your next command should be:
- A. ipadm create-addr-T static -a 192.168.1.25/24 net3
- B. ipadm enable-if -T net3
- C. <ipadm create-vnic -a 192.168.1.25/24 net3/v4
- D. ipadm create-ip -Tstatic -a 192.168.1.25/24 -n net3
- E. ipadm up-addrnet3/v4
Answer: A
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.
Reference: man ipadmn
NEW QUESTION 98
User1 is attempting to run the following command: cp bigfile verybig
The system displays the following errer:
cp: cannot create verybig: Disc quota exceeded
Your initial troubleshooting shows that the df -h command indicates the account is at 100% capacity. What command would you use to determine how much disk space the user has available?
- A. zfs userused@user1
- B. df -h | grep user1
- C. zfs get quota rpool/export/home/user1
- D. zfs quota=1M /rpool/export/home/user1
Answer: C
Explanation:
ZFS quotas can be set and displayed by using the zfs set and zfs get commands. In the following example, a quota of 10 Gbytes is set on tank/home/bonwick.
# zfs set quota=10G tank/home/bonwick # zfs get quota tank/home/bonwick NAME PROPERTY VALUE SOURCE tank/home/bonwick quota 10.0G local
Reference: ZFS Quotas and Reservations
NEW QUESTION 99
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 -s - B. from the ok prompt, issue this command:
boot -m milestone=single-user - C. From from the ok prompt, issue this command:
boot -m milestone=s - D. From the ok prompt, issue this command:
boot -m milestone/single-user - E. From the ok prompt, issue this command:
boot -milestone=single-user
Answer: A,B
Explanation:
Explanation/Reference:
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 100
When upgrading an existing system from Solaris 11 Express to Oracle Solaris 11, what happens to the datalink names?
- A. They follow the default naming convention for the newly installed version.
- B. They are called el00g#.
- C. They are called eth#.
- D. They are left unnamed, to avoid conflicts, and need to be renamed after the installation process is complete.
- E. They maintain their names.
Answer: A
Explanation:
Explanation/Reference:
Explanation:
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 Note: There is no upgrade path from Oracle Solaris 10 to Oracle Solaris 11. You must perform a fresh installation.
NEW QUESTION 101
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