Questions and Answers: 166
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NEW QUESTION: 1
Which two are true about Smart Scan?
A. A query rewrite may occur to a materialized view stored in Exadata but will never benefit from Smart Scan.
B. A query rewrite may occur to a materialized view stored in Exadata, and it will always benefit from Smart Scan.
C. Join processing can be partly offloaded to Exadata Storage Servers.
D. Column projection does not contribute to the performance benefit of Smart Scan.
E. It is possible to offload single row functions to the Exadata Storage Servers.
F. Join processing can be fully offloaded to Exadata Storage Servers.
Answer: C,E
Explanation:
D: With Exadata storage, database operations are handled much more efficiently. Queries that perform table scans can be processed within Exadata storage with only the required subset of data returned to the database server. Row filtering, column filtering and some join processing (among other functions) are performed within the Exadata storage cells. When this takes place only the relevant and required data is returned to the database server.
E: With Smart Scan processing, row filtering, column filtering, some join processing, and other functions are performed in the Exadata cells.
References:
http://www.centroid.com/blog/exadata-smart-scan-processing
NEW QUESTION: 2
To meet the authentication requirements of Fabrikam, what should you include in the solution? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation
1
1
0
Topic 2, Contoso, Ltd Case Study B
Overview
Contoso,Ltd is a US-base finance service company that has a main office New York and an office in San Francisco.
Payment Processing Query System
Contoso hosts a business critical payment processing system in its New York data center. The system has three tiers a front-end web app a middle -tier API and a back end data store implemented as a Microsoft SQL Server
2014 database All servers run Windows Server 2012 R2.
The front -end and middle net components are hosted by using Microsoft Internet Inform-non Services (IK) The application rode is written in C# and middle- tier API uses the Entity framework to communicate the SQL Server database. Maintenance of the database e performed by using SQL Server Ago- The database is currently J IB and is not expected to grow beyond 3 TB.
The payment processing system has the following compliance related requirement
* Encrypt data in transit and at test. Only the front-end and middle-tier components must be able to access the encryption keys that protect the date store.
* Keep backups of the two separate physical locations that are at last 200 miles apart and can be restored for op to seven years.
* Support blocking inbound and outbound traffic based on the source IP address, the description IP address, and the port number
* Collect Windows security logs from all the middle-tier servers and retain the log for a period of seven years,
* Inspect inbound and outbound traffic from the from-end tier by using highly available network appliances.
* Only allow all access to all the tiers from the internal network of Contoso.
Tape backups ate configured by using an on-premises deployment or Microsoft System Center Data protection Manager (DPMX and then shaped ofsite for long term storage Historical Transaction Query System Contoso recently migrate a business-Critical workload to Azure. The workload contains a NET web server for querying the historical transaction data residing in azure Table Storage. The NET service is accessible from a client app that was developed in-house and on the client computer in the New Your office. The data in the storage is 50 GB and is not except to increase.
Information Security Requirement
The IT security team wants to ensure that identity management n performed by using Active Directory.
Password hashes must be stored on premises only.
Access to all business-critical systems must rely on Active Directory credentials. Any suspicious authentication attempts must trigger multi-factor authentication prompt automatically Legitimate users must be able to authenticate successfully by using multi-factor authentication.
Planned Changes
Contoso plans to implement the following changes:
* Migrate the payment processing system to Azure.
* Migrate the historical transaction data to Azure Cosmos DB to address the performance issues.
Migration Requirements
Contoso identifies the following general migration requirements:
Infrastructure services must remain available if a region or a data center fails. Failover must occur without any administrative intervention
* Whenever possible. Azure managed serves must be used to management overhead
* Whenever possible, costs must be minimized.
Contoso identifies the following requirements for the payment processing system:
* If a data center fails, ensure that the payment processing system remains available without any administrative intervention. The middle-tier and the web front end must continue to operate without any additional configurations-
* If that the number of compute nodes of the from -end and the middle tiers of the payment processing system can increase or decrease automatically based on CPU utilization.
* Ensure that each tier of the payment processing system is subject to a Service level Agreement (SLA) of
9959 percent availability
* Minimize the effort required to modify the middle tier API and the back-end tier of the payment processing system.
* Generate alerts when unauthorized login attempts occur on the middle-tier virtual machines.
* Insure that the payment processing system preserves its current compliance status.
* Host the middle tier of the payment processing system on a virtual machine.
Contoso identifies the following requirements for the historical transaction query system:
* Minimize the use of on-premises infrastructure service.
* Minimize the effort required to modify the .NET web service querying Azure Cosmos DB.
* If a region fails, ensure that the historical transaction query system remains available without any administrative intervention.
Current Issue
The Contoso IT team discovers poor performance of the historical transaction query as the queries frequently cause table scans.
Information Security Requirements
The IT security team wants to ensure that identity management is performed by using Active Directory.
Password hashes must be stored on-premises only.
Access to all business-critical systems must rely on Active Directory credentials. Any suspicious authentication attempts must trigger a multi-factor authentication prompt automatically. legitimate users must be able to authenticate successfully by using multi-factor authentication.
NEW QUESTION: 3
あなたは、Employeeと従業員の一般的なリストと呼ばれるクラスを含むアプリケーションを開発しています。 以下のコード部分は、従業員のリストを宣言します：
List<Employee> employeesList = new List<Employee>();
あなたは数百EmployeeオブジェクトとemployeesListオブジェクトを移入します。
アプリケーションは、一度に5 Employeeオブジェクトのデータを表示する必要があります。
あなたは、Employeeオブジェクトの正しい数を返しますメソッドを作成する必要があります。
あなたは、どのコード部分を使わなければなりませんか？
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Explanation:
Explanation
public static IEnumerable Page(IEnumerable source, int page, int pageSize)
{
return source.Skip((page - 1) * pageSize).Take(pageSize);
}
if page 1 means it skips 0 and take the pageSize
if page 2 means it skips first page and take the 2nd page.
NEW QUESTION: 4
What is the output of the following program when executed with the Python Interpreter?
A. SyntaxError: invalid syntax
B. 0
C. 1
D. 2
Answer: A