Valid 1Z0-821 Exam Q&A PDF 1Z0-821 Dump is Ready (Updated 245 Questions)
Exam Questions and Answers for 1Z0-821 Study Guide
NEW QUESTION 92
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: C
Explanation:
Explanation/Reference:
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 93
In Oracle Solaris 11, where is the Oracle default repository located?
- A. /cdrom/cdrom0
- B. http://www.oracle.com/Solaris/download
- C. http://localhost/solaris
- D. http://pkg.oracle.com/solaris/release
- E. /var/spool/pkg
Answer: D
Explanation:
REPOSITORY DESCRIPTION
* http://pkg.oracle.com/solaris/release
The default repository for new Oracle Solaris 11 users. This repository receives updates for each new release of Oracle Solaris. Significant bug fixes, security updates, and new software may be provided at any time for users to install at Oracle's discretion.
*https://pkg.oracle.com/solaris/support
Provides bug fixes and updates. Accessible with a current support contract from Oracle.
* https://pkg.oracle.com/solaris/dev Provides the latest development updates. Accessible to users enrolled in the Oracle Solaris 11 Platinum Customer Program and approved Oracle Partners.
NEW QUESTION 94
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. an ether stub
- B. nothing,because a virtual switch is automatically created when the virtual network interfaces are created
- C. a virtual bridge
- D. virtual router
- E. a virtual network interface
Answer: E
Explanation:
First create a virtual switch,then create a virtual network interface.
NEW QUESTION 95
A datalink can best be described as______.
- A. a device that provides Classless Inter-Domain Routing
- B. a logical object used for IP Multipathing
- C. a driver for a Network Interface Card
- D. the software connecting the Internet Layer and the Physical Layer
Answer: B
Explanation:
The command dladm is used to configure data-link interfaces in Sun Solaris. A configured data-link is represented in the system as interface that can be used for TCP/IP. Each data-link relies on either a single network device or an link aggregation device to send & recieve packets.
Network interfaces provide the connection between the system and the network. These interfaces are configured over data links, which in turn correspond to instances of hardware devices in the system.
In the current model of the network stack, interfaces and links on the software layer build on the devices in the hardware layer. More specifically, a hardware device instance in the hardware layer has a corresponding link on the data-link layer and a configured interface on the interface layer. This one-to-one relationship among the network device, its data link, and the IP interface is illustrated in the figure that follows.
Network Stack Showing Network Devices, Links, and Interfaces:
Reference: System Administration Guide: Network Interfaces and Network Virtualization
NEW QUESTION 96
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 clear pool1 command.
- B. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted execute the zpool online pool1 command.
- C. Shut the system down, replace disk c3t3d0, and boot the system. When the system is booted, execute the zpool replace pool1 c3t3d0 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: C
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
Reference: Solaris ZFS Administration Guide, How to Replace a Disk in the ZFS Root Pool
NEW QUESTION 97
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. The root user can log in from the console login.
- C. NWAM will be used to configure the network interface.
- D. You will be prompted to configure the network interface after the initial login.
- E. The network/physical service is offline.
Answer: B,E
NEW QUESTION 98
You are using AI to install a new system. You have added to following information to the AI manifest:
<configuration type= "zone" name= "dbzone"
source = "http://sysA.example.com/zone_cfg/zone.cfg"/>
Which statement is true with regard to the zone.cfg?
- A. It is am xml configuration file from the /etc/zone directory. It will be used as a profile for the zone. It specifies the zonename, zonepath, and other zonecfg parameters.
- B. The zone.cfg file is an AI manifest that specifies how the zone is to be installed.
- C. The zone.cfg file is an SC profile with keywords that are specific for configuring a as part of the installation process.
- D. The zone.cfg file is text file in a zonecfg export format.
- E. The zone.cfg file is an xml file in a form suitable for use as a command file for the zonecfg command.
Answer: D
Explanation:
Explanation/Reference:
Explanation:
https://docs.oracle.com/cd/E23824_01/html/E21798/glitd.html#scrolltoc
http://docs.oracle.com/cd/E23824_01/html/E21798/glitd.html#aizoneconf
NEW QUESTION 99
User jack on host solaris attempts to use ssh to log in to host oracle and receives this message:
jack@solaris:~$ ssh oracle
ssh: connect to host oracle port 22: connection refused
What is the problem?
- A. Host solaris is not running the ssh service.
- B. Host oracle is not running the ssh service.
- C. Host does not have a valid host private key.
- D. Host solaris does not have a valid host public key.
- E. Host oracle is not configured for host-based authentication.
- F. Host oracle does not have a valid host public key.
- G. Host oracle does not have a valid host private key.
- H. Host solaris is not configured for host-based authentication.
Answer: B
Explanation:
Explanation/Reference:
Explanation:
The host he is trying to connect to (oracle) is not running the required service (ssh).
NEW QUESTION 100
You have been asked to do an orderly shutdown on a process with a PID of 1234, with the kill command. Which command is best?
- A. kill -9 1234
- B. kill-11234
- C. kill -2 1234
- D. kill -15 1234
Answer: D
Explanation:
On POSIX-compliant platforms, SIGTERM is the signal sent to a process to request its termination. The symbolic constant for SIGTERM is defined in the header file signal.h. Symbolic signal names are used because signal numbers can vary across platforms, however on the vast majority of systems, SIGTERM is signal #15.
SIGTERM is the default signal sent to a process by the kill or killall commands. It causes the termination of a process, but unlike the SIGKILL signal, it can be caught and interpreted (or ignored) by the process. Therefore, SIGTERM is akin to asking a process to terminate nicely, allowing cleanup and closure of files. For this reason, on many Unix systems during shutdown, init issues SIGTERM to all processes that are not essential to powering off, waits a few seconds, and then issues SIGKILL to forcibly terminate any such processes that remain.
NEW QUESTION 101
You are installing Oracle Solaris 11 on a SPARC-based system by using the Test Installer.
Which three statements are true?
- A. You must always create one regular user when installing the system.
- B. The ROOT user will always be configured as a role.
- C. The root filesystem will always be deployed on ZFS.
- D. The network can be configured using DHCP.
- E. The root filesystem will always be located on a local disk.
- F. The set of packages that will be installed are server based.
Answer: C,D,F
NEW QUESTION 102
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 0722 set In /export/home/jack/.bashrc
- B. It is not possible to make a script executable without using the chmod command.
- C. umask value of 0002 set in /etc/profile
- D. umask value of 0002 set in /export/home/jack/.bashrc
- E. umask value of 0722 set in /etc/profile
Answer: C
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
7 55 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 103
When upgrading an existing system from Solaris 11 Express to Oracle Solaris 11,what happens to the datalink names?
- A. They are called eth#.
- B. They follow the default naming convention for the newly installed version.
- C. They are called el00g#.
- D. They maintain their names.
- E. They are left unnamed,to avoid conflicts,and need to be renamed after the installation process is complete.
Answer: B
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 104
Select the packet type that identifies members of the group and sends information to all the network interfaces in that group.
- A. Bayesian
- B. Multicast
- C. Quality of Service Priority
- D. Broadcast
- E. Unicast
Answer: B
Explanation:
IPv6 defines three address types:
unicast
Identifies an interface of an individual node.
multicast
Identifies a group of interfaces, usually on different nodes. Packets that are sent to the multicast
address go to all members of the multicast group.
anycast
Identifies a group of interfaces, usually on different nodes. Packets that are sent to the anycast
address go to the anycast group member node that is physically closest to the sender.
Reference: System Administration Guide: IP Services, IPv6 Addressing Overview
NEW QUESTION 105
Which command would you use to determine which package group is installed on your system?
- A. uname -a
- B. pkg info
- C. cat /var/sadm/system/admin/CLUSTEP
- D. pkg list group/system/\*
Answer: B
Explanation:
The pkg info command provides detailed information about a particular IPS package.
Note: The pkginfo command does the same for any SVR4 packages you may have installed on the same system.
pkg info example:
$ pkg info p7zip
Name: compress/p7zip
Summary: The p7zip compression and archiving utility
Description: P7zip is a unix port of the 7-Zip utility. It has support for numerous compression algorithms, including LZMA and LZMA2, as well as for various archive and compression file formats, including 7z, xz, bzip2, gzip, tar, zip (read-write) and cab, cpio, deb, lzh, rar, and rpm (read-only).
Category: System/Core
State: Installed
Publisher: solaris
Version: 9.20.1
Build Release: 5.11
Branch: 0.175.0.0.0.2.537
Packaging Date: Wed Oct 19 09:13:22 2011
Size: 6.73 MB
FMRI: pkg://solaris/compress/[email protected], 5.11-0.175.0.0.0.2.537:20111019T091322Z
NEW QUESTION 106
You wish to edit your crontab file that is located in /var/spool/cron/crontab. What command must you enter to edit this file?
- A. crontab -r
- B. crontab -e /etc/default/cron
- C. crontab -e
- D. crontab -e /var/spool/cron/crontab
Answer: C
Explanation:
Explanation/Reference:
Explanation:
The main tool for setting up cron jobs is the crontab command, though this is not available on every Unix variant. Typically under Solaris or Linux one would create a new crontab or edit an existing one, using the command; crontab -e
Use the ls -l command to verify the contents of the/var/spool/cron/crontabs file.
NEW QUESTION 107
Choose three options that describe the features associated with a Live Media installation.
- A. allows both automatic and manual configuration of the network
- B. provides a "hands free" installation
- C. installs the desktop based packages
- D. installs both the server-based and desktop-based package
- E. installs the server-based set of packages only
- F. can be used to install only x86 platforms
- G. does not allow the root user to log in to the system directly from the console (or any terminal)
Answer: B,C,F
Explanation:
The graphical installer is officially known as the "Live Media." This means that Oracle Solaris can be booted into RAM, causing zero impact on your existing operating system.
After it is loaded, you are free to experiment with Oracle Solaris to determine whether it is something you would like to install to your system.
You can download Oracle Solaris 11 Live Media for x86, which is an approximately 800 MB image file, and use a DVD burner to create the disk, or you can use the ISO image directly in a virtual machine or through the Oracle Integrated Lights Out Manager (ILOM) Remote Console.
The Live Media is not intended for long-term use. For example, any changes that you make to the system are lost when the system is shut down. Therefore, the next logical step is to install Oracle Solaris on the system, which the Live Media makes easy by placing an Install Oracle Solaris icon right on the desktop. But before we head down that road, let's step back a bit and consider the installation options.
Note: The Live Media provides administrators with an opportunity to explore the Oracle Solaris 11 environment without installing it on a system. The system boots off the media directly allowing administrators to start the installer should they choose to install it to a system.
NEW QUESTION 108
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 different versions of the Oracle Solaris 11 OS, then create two AI manifests and two install services.
- B. The install server can be either an x86 machine or a SPARC machine.
- C. 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.
- D. 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.
- 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. You can create only one manifest per install service. If you need more than one manifest create multiple install services.
Answer: B,C,E
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 109
When speaking to 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. cat /etc/release
- B. pkg info entire
- C. prtconf | grep -i update
- D. pkg info all
- E. cat /etc/update
Answer: A
Explanation:
Explanation/Reference:
Explanation:
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
NEW QUESTION 110
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. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. The number of groups one user can concurrently belong to is unlimited in Solaris 11.
- G. 5
Answer: E
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 111
On server A, you enter the following command to add a static route to serverA route -p add -host
192.168.1.101 192.168.1.101 -static
What is the purpose of this command?
- A. to ensure the IP address for serverB is not flushed from the ARP cache
- B. to specify routing to an adjacent network when in.rdisc is not used
- C. to specify routing to an adjacent network when in.routed is not used
- D. to optimize link aggregation using a direct connection between two systems
- E. to temporarily bypass IP Filter rules
- F. to specify an IPMP target IP address to in.mpathd
Answer: F
Explanation:
Note: # route -p add -host destination-IP gateway-IP -static
where destination-IP and gateway-IP are IPv4 addresses of the host to be used as a target.
For example, you would type the following to specify the target system 192.168.10.137, which is on the same subnet as the interfaces in IPMP group itops0:
$ route -p add -host 192.168.10.137 192.168.10.137 -static This new route will be automatically configured every time the system is restarted. If you want to define only a temporary route to a target system for probe-based failure detection, then do not use the -p option.
NEW QUESTION 112
You created an IP address for interface not.3 with the following command, which executed successfully:
ipadm create-addr -T static -a 192.168.0.100/24 net3/v4
You then ran:
ipadm show-if
The result indicated that the interface was down.
You then ran:
ipadm delete-addr net3/v4
ipadm create-addr -T static -a 192.168.0.101/24 net3/v4
ipadm show-if
The last command indicated that the interface was up.
Why did it work with the second address specified, but not the first?
- A. The address 192.168.0.100 is at a boundary and may not be configured in Oracle Solaris 11.
- B. Another device exists on the network, using the 192.168.0.100 address.
- C. 192.168.0.100 is a DHCP address and may not be statically configured in Oracle Solaris
11. - D. The 192.168.0.100 address is reserved for broadcast messages.
- E. The network interface card does not support the address 192.168.0.100.
Answer: B
Explanation:
The first IP address is already in use.
NEW QUESTION 113
......
Oracle 1Z0-821 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
| Topic 6 |
|
| Topic 7 |
|
| Topic 8 |
|
| Topic 9 |
|
| Topic 10 |
|
| Topic 11 |
|
Certification dumps - Oracle Solaris 1Z0-821 guides - 100% valid: https://www.dumpsvalid.com/1Z0-821-still-valid-exam.html