[2018 new] Huawei HCNA-IoT H12-111-ENU preparation materials

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Share some HCNA-IoT H12-111 exam questions and answers below.
Which of the following scenes belongs to the control message delivery process? (Multiple choice)
A. Wisdom Street Light Application remote open street light in a region
B. Fleet Management Application Set the vehicle engine reporting cycle
C. smoke sensor reported home smoke anomalies
D. smart home phone APP remote query home appliances state
Answer: ABD

Smart home network includes the basic home network and smart Internet.
A. True
B. False
Answer: A

The southbound device sends an AT command to SoftRadio through the serial port. As a result, SoftRadio does not display any information. What are possible causes? (Multiple choice)
A. SoftRadio received an unrecognized AT command
B. There is a problem with the southbound connection to P ‚and SoftRadio did not receive the data
C. The AT command which has been sent did not end with /r/n
D. All of the above is possible
Answer: BC

Which memory management algorithm is supported by Huawei LiteOS?
A. BOX algorithm
B. Budd algorithm
C. OPT algorithm
D. LRU algorithm
Answer: A

Which port is SoftRadio connected to platform?
A. 8843
B. 8743
C. 8090
D. Need to confirm with Huawei platform supporter
Answer: D

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vSphere 6.5 Foundations Exam 2V0-602 study guide

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Which of the following are valid ISCSI adapter types for vSphere? (Choose three.)
A. Software
B. Independent Hardware
C. Converged Network Adapter
D. Dependent Hardware
E. ISCSI HBA
Answer: ABD

Which two choices would make a Virtual Machine compatible when enabling Fault Tolerance? (Choose two.)
A. e1000e virtual network adapter
B. 2TB+ VMDK
C. A Virtual CPUs (vCPU)
D. NIC passthrough
Answer: AD

What two options are available when configuring a virtual flash resource on a virtual machine? (Choose two.)
A. Block Size
B. Limit
C. SCSI Controller
D. Reservation
Answer: BD

Which three features can be configured during the Initial creation of a cluster? (Choose three.)
A. Proactive HA
B. EVC
C. DRS
D. vSAN
Answer: BCD

What three shares are available when configuring a Resource Pool? (Choose three.)
A. Custom
B. low
C. Maximum
D. Normal
E. None
Answer: BCD

A vSphere Administrator notices that they cannot login to vCenter Server with the vSphere Web Client, although the server is responding to pings. What is the next step in troubleshooting the login problem?
A. /etc/int.d/hostd restart
B. connect-viserver -server
C. vim-cmd vmsvc/getallvms
D. service-control –status vmware-vpxd
Answer: B

A vSphere Administrator recently upgraded to vSphere 6.5 and wants to assign more than 4 TB of RAM to the virtual machine. What must happen first?
A. Make sure that the user account has administrative privileges at a global level.
B. Upgrade the Virtual Machine compatibility to version 13.
C. Obtain an ESXi server with an Intel Skylake CPU.
D. Make sure that there are no snapshots present on the virtual machine.
Answer: A

Which two options are available when migrating a powered off VM and relocating the attached disks? (Choose two.)
A. Thick Provision Eager Zeroed
B. Raw Device Mapping Physical Compatibility
C. Same format as source
D. Raw Device Mapping Virtual compatibility
Answer: AC

The Triggered Alarm on the VM shows Virtual Machine Consolidation needed status. How would an administrator recover from this event?
A. This must be done from the command line.
B. The only possible method is to clone the VM.
C. In the vSphere WebCllent, open Snapshot Manager of the VM and then use the Delete all button
D. In the vSphere WebCllent select VM, right-click > Snapshots > Consolidate.
Answer: A

Some of the VMs in a vSphere DRS duster are not migrated as expected. Which three factors can affect DRS behavior? (Choose three.)
A. The currently configured TPS settings for the VMs.
B. VM Overrides
C. DRS Aggression Levels (Migration Threshold).
D. CPU, Memory, and Network Utilization.
E. The currently configured Enhanced vMotion Compatibility level for the duster.
Answer: BCD

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Huawei H19-308-ENU HCPA-Storage exam practice test

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Share some Huawei Specialist Certification H19-308-ENU exam questions and answers below.
The backup scheme focuses on the recoverability of the data, and the disaster recovery program focuses on the continuity of the application.
A. TRUE
B. FALSE
Answer: A

About Smartner, SmartQoS, SmartPartition, Smartcache, which of the following statements are correct? (Multiple Choice)
A. All are the efficiency-enhancing softwares.
B. SmartCache uses SSD to divide into a separate performance level to speed up the data
C. SmartTier puts the appropriate data to the the appropriate place (storage layer) at the right time.
D. SmartPartition’s core idea is to ensure the performance of critical applications through the system core resources partition.
E. Smart QoS can intelligently allocate and adjust the computing resources, cache resources, concurrent resources and hard disk resources in the storage system to meet the different QoS requirements of the different storage services on the same storage device.
Answer: ABCDE

The NAS features of OceanStor V3 series support the pNFS protocol.
A. TRUE
B. FALSE
Answer: B

What scenarios as the following are that the deduplication feature of the OceanStor V3 is suitable for application in? (Multiple Choice)
A. Digital Library
B. Desktop Cloud
C. Database
D. Mail System
Answer: AB

Which type of network scaleout the OceanStor V3 uses?
A. PCIE
B. IP
C. infiniband
D. FC
Answer: B

What value does SmartVirtualization bring to customers?
A. Storage resources on demand to buy, reduce the initial investment
B. Heterogeneous virtualization, integration of mainstream manufacturers equipment storage resources
C. High school low-end unified management, doubling the management efficiency
Answer: B

The architecture that Huawei’s two-three-center disaster recovery program supports is £º
A. Parallel Architecture, Cascade Architecture
B. Parallel Architecture, Star Architecture
C. Cascade Architecture, Star Architecture
D. Parallel Architecture, Cascade Architecture, Star Architecture
Answer: A

OceanStor V3 series is the software upgrade of T series V2, the hardware can interoperate.
A. TRUE
B. FALSE
Answer: B

Which state does Hard disk hibernation technology let the hard drive without work load enter into?
A. Active
B. Idle
C. Standby
Answer: C

What is the maximum number of host interfaces the 5300/5500 V3 supported? (Per Controller)
A. 10
B. 12
C. 20
D. 28
Answer: B

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Share some IBM Certified System Administrator C9010-022 exam questions and answers below.
Which command will read a volume group backup stored at /dev/cd1 and restore the /myapp/app.c file to the /data/testcode directory?
A. restorevgfiles -f /dev/cd1 -s -d /data/testcode ./myapp/app.c
B. restore -Tqvf /dev/cd1 -s -d /data/testcode ./myapp/app.c
C. listvgbackup -restore dev/cd1 -s -f data/testcode ./myapp/app.c
D. restvg -d /dev/cd1 -s -f /data/testcode ./myapp/app.c
Answer: A

Which technology provides the maximum amount of usable storage and resilience for a system with 6 physical volumes?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 6
Answer: C

After AIX TL and SP update, the command “lppchk -v” returns the following output: Which command wilt provide the list of filesets that need this prerequisite?
A. Ippchk -vm3
B. lslpp -l rsct.opt.storagerm
C. oslevel -rI 3.1.0.0
D. installp -C rsct.opt.storagerm
Answer: A

A system that will be re-installed has the following characteristics:

If the following target_disk_data stanza is defined in the bosinst.data file used for the install, which disk will be installed with the operating system? target_disk_data: LOCATION = 0006bf1c3d817913 SIZE_MB = HDISKNAME = hdisk1
A. hdisk0
B. hdisk1
C. hdisk2
D. hdisk3
Answer: C

How can an administrator disable Role Based Access Control (RBAC) in a WPAR?
A. Run chattr -E -I sys0 -a enhanced_RBAC=false Reboot the WPAR
B. Run the RBAC wizard and deselect ‚Enable RBAC Reboot the system
C. Run chdev -I mywpar -a enhanced_RBAC=false Reboot the Global Environment
D. Run chwpar -a RBAC=false Reboot the WPAR
Answer: C

What is a mandatory requirement to allow an AIX 7-based NIM Master to install clients over IPv6?
A. The NIM Master must use static IPv6 addresses.
B. The NIM Master must have both IPv4 and IPv6 connectivity.
C. The NIM Master must be installed with the AIX Enterprise Edition license.
D. The NIM Master must be running at least AIX 7.1 TLOO Service Pack3 or later.
Answer: A

Which command will display the time and date of the last boot?
A. who-b
B. last-b
C. boot-b
D. time-x
Answer: A

The/usr/sbin/clcmd command is not working as documented in an administrator’s reference. How can the administrator determine if the command being run is at the same level as the command being referenced in the documentation?
A. Get the fileset name from Isipp-f, then check the level of the file set with lslpp-1.
B. Use Islpp-wto get the fileset name, then check the level of the file set with lslpp-1.
C. Use lslpp-1 to determine the fileset name and check the level.
D. Use Is-I to determine the last modified date of the command.
Answer: B

What infrastructure is necessary to support update installation to an existing IVM instance?
A. Hardware Management Console
B. Systems Director Management Console
C. IBM Systems Director
D. Network Install Manager
E. Cluster Systems Manager
Answer: D

Which component must be available to Cluster Aware AIX on each node to support cluster communication?
A. An lPv6 link-local address on each node
B. A dedicated vLAN that is not used for any other purpose
C. An lPv4 network address
D. A disk used only for heartbeat communication
Answer:C

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Share some HCS-Pre-Sales-IP Network(Datacom) H19-301-ENU exam questions and answers below.
Which advantage does S1700 series natural heat dissipation SMB switches have? (Multiple choice)
A. No noise pollution
B. to avoid regular maintain the fans, saving maintenance costs
C. system without fan extra power consumption, make the product to achieve better power efficiency
D. can effectively prevent veneer corrosion
Answer: ABCD

S9703 switches support dual master.
A. TRUE
B. FALSE
Answer: A

Which of the following statements are true? (Multiple choice)
A. MSR2630 use dual-core CPU, no switching network, can¡¯t support inter-board switching function
B. MSR2630 does not support DSP, so does not support voice service
C. MSRG2 does not have hardware TM, configure QoS policies will lead to serious performance degradation
D. MSRG2 does not support Zone-Based Firewall, strategy issued at the interface, poor scalability, when more interface, it is difficult to deploy.
Answer: ACD

S3700 switch can support up to ( ) stacked.
A. 4
B. 9
C. 12
D. 16
Answer: B

Which module does S7700 through to support the hardware-level OAM/BFD function?
A. CMU
B. MCUA
C. FSU
D. SRUB
Answer: C

Which of the following are the typical case of the AR G3? (Multiple choice)
A. Kunming, Yunnan Rural Credit Cooperatives
B. Xinjiang Construction Corps „large set of network”
C. Third Design Institute of Machinery Industry transnational VoIP voice network
D. Sinopec gas station project in Guangdong
Answer: ABCD

How many charges license does S12700′s X1E board set? (Multiple choice)
A. X1E board routing Enhanced License
B. X1E veneer WLAN Access Controller AP Resource Authorization License
C. X1E veneer BRAS user resource authorization license
D. X1E veneer CSS2 cluster master 1+N function license
Answer: ABC

S1700-52GFR-4P-AC is a 100M switch.
A. TRUE
B. FALSE
Answer: B

S7700 does not support 40*10GE FC board.
A. TRUE
B. FALSE
Answer: B

S12700 main competitor is S10500 at home, can be joint S9700 between up and down.
A. TRUE
B. FALSE
Answer: A

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Passcert MCSA Windows Server 2012 70-417 questions

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Your network contains a server named Server1 that runs Windows Server 2012. Server1 has the Hyper-V server role installed.
Server1 hosts four virtual machines named VM1, VM2, VM3, and VM4.
Server1 is configured as shown in the following table.

VM3 is used to test applications.
You need to prevent VM3 from synchronizing its clock to Server1.
What should you configure?
A. NUMA topology
B. Resource control
C. Resource metering
D. Virtual Machine Chimney
E. The VLAN ID
F. Processor Compatibility
G. The startup order
H. Automatic Start Action
I. Integration Services
J. Port mirroring
K. Single-root I/O virtualization
Answer: I

Your network contains an Active Directory domain named contoso.com. The domain contains a member server named Server1. Server1 runs Windows Server 2012 R2 and has the Hyper-V server role installed.
Server1 hosts 10 virtual machines. A virtual machine named VM1 runs Windows Server 2012 R2 and hosts a processor-intensive application named App1.
Users report that App1 responds more slowly than expected.
You need to monitor the processor usage on VM1 to identify whether changes must be made to the hardware settings of VM1.
Which performance object should you monitor on Server1?
A. Hyper-V Hypervisor Logical Processor
B. Hyper-V Hypervisor Root Virtual Processor
C. Processor
D. Hyper-V Hypervisor Virtual Processor
E. Process
Answer: D

You perform a Server Core Installation of Windows Server 2012 R2 on a server named Server1. You need to add a graphical user interface (GUI) to Server1. Which tool should you use?
A. The imagex.exe command
B. The ocsetup.exe command
C. The setup.exe command
D. The dism.exe command
Answer: D

DRAG DROP
Your network contains an Active Directory domain named contoso.com. The domain contains two DHCP servers named DHCP1 and DHCP2 that run Windows Server 2012.
You install the IP Address Management (IPAM) Server feature on a member server named Server1 and you run the Run Invoke-IpamGpoProvisioningcmdlet.
You need to manage the DHCP servers by using IPAM on Server1.
Which three actions should you perform? To answer, move the three appropriate actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

You deploy an Active Directory Federation Services (AD FS) 2.1 infrastructure. The infrastructure uses Active Directory as the attribute store.
Some users report that they fail to authenticate to the AD FS infrastructure.
You discover that only users who run third-party web browsers experience issues.
You need to ensure that all of the users can authenticate to the AD FS infrastructure successfully.
Which Windows PowerShell command should you run?
A. Set-ADFSProperties -SSOLifetime 1:00:00
B. Set-ADFSProperties -AddProxyAuthenticationRules None
C. Set-ADFSProperties -ExtendedProtectionTokenCheck None
D. Set-ADFSProperties -ProxyTrustTokenLifetime 1:00:00
Answer: C

Your network contains an Active Directory domain named contoso.com. The domain contains a server named Server1 that runs Windows Server 2012 and a server named Server2 that runs Windows Server 2008 R2 Service Pack 1 (SP1). Both servers are member servers.
On Server2, you install all of the software required to ensure that Server2 can be managed remotely from Server Manager. You need to ensure that you can manage Server2 from Server1 by using Server Manager.
Which two tasks should you perform on Server2? (Each correct answer presents part of the solution. Choose two.)
A. Run the Enable-PSRemotingcmdlet.
B. Run the Configure-SMRemoting.psl script.
C. Run the Enable-PSSessionConfigurationcmdlet.
D. Run the Set-ExecutionPolicycmdlet.
E. Run the systempropertiesremote.exe command.
Answer: B, D

Your network contains an Active Directory domain named contoso.com. The domain contains a file server named Server1. The File Server Resource Manager role service is installed on Server1. All servers run Windows Server 2012 R2.
A Group Policy object (GPO) named GPO1 is linked to the organizational unit (OU) that contains Server1. The following graphic shows the configured settings in GPO1.

Server1 contains a folder named Folder1. Folder1 is shared as Share1.
You attempt to configure access-denied assistance on Server1, but the Enable access-denied assistance option cannot be selected from File Server Resource Manager.
You need to ensure that you can configure access-denied assistance on Server1 manually by using File Server Resource Manager.
What should you do?
A. Set the Customize message for Access Denied errors policy setting to Enabled for GPO1.
B. Set the Enable access-denied assistance on client for all file types policy setting to Disabled for GPO1.
C. Set the Enable access-denied assistance on client for all file types policy setting to Enabled for GPO1.
D. Set the Customize message for Access Denied errors policy setting to Not Configured for GPO1.
Answer: D

Your network contains an Active Directory domain named contoso.com. All servers run Windows Server 2012 R2. The domain contains a server named Server1.
You install the Windows PowerShell Web Access gateway on Server1.
You need to provide administrators with the ability to manage the servers in the domain by using the Windows PowerShell Web Access gateway.
Which two cmdlets should you run on Server1? (Each correct answer presents part of the solution. Choose two.)
A. Install PswaWebApplication
B. Add PswaAuthorizationRule
C. Set-WSManlnstance
D. Set-WSManQuickConfig
E. Set-BCAuthentication
Answer: A, B

Your network contains an Active Directory domain named contoso.com. The domain contains two member servers named Server1 and Server2 that run Windows Server 2012 R2.
You log on to Server1.
You need to retrieve the IP configurations of Server2.
Which command should you run from Server1?
A. winrm get server2
B. dsquery -scope base -attrip/server2
C. winrs -r: server2ipconfig
D. ipconfig> server2.ip
Answer: C

Your network contains an Active Directory forest named contoso.com. The forest contains two domains named contoso.com and child.contoso.com and two sites named Site1 and Site2.
The domains and the sites are configured as shown in following table.

When the link between Site1 and Site2 fails, users fail to log on to Site2. You need to identify what prevents the users in Site2 from logging on to the child.contoso.com domain.
What should you identify?
A. The placement of the infrastructure master
B. The placement of the global catalog server
C. The placement of the domain naming master
D. The placement of the PDC emulator
Answer: B

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You are developing an application that includes the following code segment. (Line numbers are included for reference only.)

The GetAnimals() method must meet the following requirements:
• Connect to a Microsoft SQL Server database.
• Create Animal objects and populate them with data from the database.
• Return a sequence of populated Animal objects.
You need to meet the requirements.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Insert the following code segment at line 16:
while(sqlDataReader.NextResult())
B. Insert the following code segment at line 13:
sqlConnection.Open();
C. Insert the following code segment at line 13:
sqlConnection.BeginTransaction();
D. Insert the following code segment at line 16:
while(sqlDataReader.Read())
E. Insert the following code segment at line 16:
while(sqlDataReader.GetValues())
Answer: B, D

You are implementing a new method named ProcessData. The ProcessData() method calls a third-party component that performs a long-running operation. The third-party component uses the IAsyncResult pattern to signal completion of the long-running operation. You need to ensure that the calling code handles the long-running operation as a System.Threading.Tasks.Task object.Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Call the component by using the TaskFactory.FromAsync() method.
B. Create a TaskCompletionSource object.
C. Apply the async modifier to the method signature.
D. Apply the following attribute to the method signature: [MethodImpl(MethodImplOptions.Synchronized)]
Answer: A, B

You are creating a class named Loan.
The Loan class must meet the following requirements:
- Include a member that represents the rate for a Loan instance.
- Allow external code to assign a value to the rate member.
- Restrict the range of values that can be assigned to the rate member.
You need to implement the rate member to meet the requirements. In which form should you implement the rate member?
A. public static property
B. public property
C. public static field
D. protected field
Answer: B

You are developing an application. The application includes classes named Employee and Person and an interface named IPerson.
The Employee class must meet the following requirements:
• It must either inherit from the Person class or implement the IPerson interface.
• It must be inheritable by other classes in the application.
You need to ensure that the Employee class meets the requirements.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A. Option A
B. Option B
C. Option C
D. Option D
Answer: B, D

You are developing an application. The application converts a Location object to a string by using a method named WriteObject. The WriteObject() method accepts two parameters, a Location object and an XmlObjectSerializer object.
The application includes the following code. (Line numbers are included for reference only.)

You need to serialize the Location object as a JSON object.
Which code segment should you insert at line 20?
A. New DataContractSerializer(typeof(Location))
B. New XmlSerializer(typeof(Location))
C. New NetDataContractSenalizer()
D. New DataContractJsonSerializer(typeof(Location))
Answer: D

You are developing an application that uses the Microsoft ADO.NET Entity Framework to retrieve order information from a Microsoft SQL Server database.
The application includes the following code. (Line numbers are included for reference only.)

The application must meet the following requirements:
• Return only orders that have an OrderDate value other than null.
• Return only orders that were placed in the year specified in the OrderDate property or in a later year.
You need to ensure that the application meets the requirements.
Which code segment should you insert at line 08?
A. Where order.OrderDate.Value != null && order.OrderDate.Value.Year > = year
B. Where order.OrderDate.Value = = null && order.OrderDate.Value.Year = = year
C. Where order.OrderDate.HasValue && order.OrderDate.Value.Year = = year
D. Where order.OrderDate.Value.Year = = year
Answer: A

You are developing a method named CreateCounters that will create performance counters for an application.
The method includes the following code. (Line numbers are included for reference only.)

You need to ensure that Counter1 is available for use in Windows Performance Monitor (PerfMon).
Which code segment should you insert at line 16?
A. CounterType = PerformanccCounterType.RawBase
B. CounterType = PerformanceCounterType.AverageBase
C. CounterType = PerformanceCounterType.SampleBase
D. CounterType = PerformanceCounterType.CounterMultiBase
Answer: C

DRAG DROP
You are developing an application that implements a set of custom exception types.
You declare the custom exception types by using the following code segments:

The application includes a function named DoWork that throws .NET Framework exceptions and custom exceptions.
The application contains only the following logging methods:

The application must meet the following requirements:
• When AdventureWorksValidationException exceptions are caught, log the information by using the static void Log (AdventureWorksValidationException ex) method.
• When AdventureWorksDbException or other AdventureWorksException exceptions are caught, log the information by using the static void I oq( AdventureWorksException ex) method.
You need to meet the requirements.
How should you complete the relevant code? (To answer, drag the appropriate code segments to the correct locations in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)

Answer:

DRAG DROP
You develop an application that displays information from log files when errors occur. The application will prompt the user to create an error report that sends details about the error and the session to the administrator. When a user opens a log file by using the application, the application throws an exception and closes. The application must preserve the original stack trace information when an exception occurs during this process. You need to implement the method that reads the log files.
How should you complete the relevant code? (To answer, drag the appropriate code segments to the correct locations in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)

Answer:

You are developing an application. The application calls a method that returns an array of integers named employeeIds. You define an integer variable named employeeIdToRemove and assign a value to it. You declare an array named filteredEmployeeIds.
You have the following requirements:
• Remove duplicate integers from the employeeIds array.
• Sort the array in order from the highest value to the lowest value.
• Remove the integer value stored in the employeeIdToRemove variable from the employeeIds array.
You need to create a LINQ query to meet the requirements.
Which code segment should you use?

A. Option A
B. Option B
C. Option C
D. Option D
Answer: C

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Which two statements are true about sequences created in a single instance database? (Choose two.)
A. CURRVAL is used to refer to the last sequence number that has been generated
B. DELETE would remove a sequence from the database
C. The numbers generated by a sequence can be used only for one table
D. When the MAXVALUE limit for a sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement
E. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted
Answer: A,D

Which statement is true regarding external tables?
A. The default REJECT LIMIT for external tables is UNLIMITED.
B. The data and metadata for an external table are stored outside the database.
C. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
D. The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.
Answer: D

Which two tasks can be performed by using Oracle SQL statements?
A. changing the password for an existing database
B. connecting to a database instance
C. querying data from tables across databases
D. starting up a database instance
E. executing operating system (OS) commands in a session
Answer: C,E

Which two statements are true regarding the COUNT function? (Choose two.)
A. COUNT(*) returns the number of rows including duplicate rows and rows containing NULL value in any of the columns
B. COUNT(cust_id) returns the number of rows including rows with duplicate customer IDs and NULL value in the CUST_ID column
C. COUNT(DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and NULL values in the INV_AMT column
D. A SELECT statement using COUNT function with a DISTINCT keyword cannot have a WHERE clause
E. The COUNT function can be used only for CHAR, VARCHAR2 and NUMBER data types
Answer: A,C

Which three statements are true regarding the data types?
A. Only one LONG column can be used per table.
B. ATIMESTAMP data type column stores only time values with fractional seconds.
C. The BLOB data type column is used to store binary data in an operating system file.
D. The minimum column width that can be specified for a varchar2 data type column is one.
E. The value for a CHAR data type column is blank-padded to the maximum defined column width.
Answer: A,D,E

Which statement is true regarding the INTERSECT operator?
A. It ignores NULL values
B. The number of columns and data types must be identical for all SELECT statements in the query
C. The names of columns in all SELECT statements must be identical
D. Reversing the order of the intersected tables the result
Answer: B

Which statements are true? (Choose all that apply.)
A. The data dictionary is created and maintained by the database administrator.
B. The data dictionary views can consist of joins of dictionary base tables and user-defined tables.
C. The usernames of all the users including the database administrators are stored in the data dictionary.
D. The USER_CONS_COLUMNS view should be queried to find the names of the columns to which a constraint applies.
E. Both USER_OBJECTS and CAT views provide the same information about all the objects that are owned by the user.
F. Views with the same name but different prefixes, such as DBA, ALL and USER, use the same base tables from the data dictionary
Answer: C,D,F

Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)
A. You can use column alias in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
C. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.
D. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.
E. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
Answer: D,E

Which two statements are true regarding multiple-row subqueries? (Choose two.)
A. They can contain group functions.
B. They always contain a subquery within a subquery.
C. They use the < ALL operator to imply less than the maximum.
D. They can be used to retrieve multiple rows from a single table only.
E. They should not be used with the NOT IN operator in the main query if NULL is likely to be a part of the result of the subquery.
Answer: A,E

Evaluate the following two queries:
Which statement is true regarding the above two queries?
A. Performance would improve query 2 only if there are null values in the CUST__CREDIT__LIMIT column.
B. There would be no change in performance.
C. Performance would degrade in query 2.
D. Performance would improve in query 2.
Answer: B

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