Passing a 70-762 Prep exam to get a certificate will help you to look for a better job and get a higher salary. If you are tired of finding a high quality study material, we suggest that you should try our 70-762 Prep exam prep. Because our materials not only has better quality than any other same learn products, but also can guarantee that you can pass the 70-762 Prep exam with ease. Our experts written the accurate 70-762 Prep test answers for exam preparation and created the study guideline for our candidates. We promise you will get high passing mark with our valid 70-762 Prep exam torrent and your money will be back to your account if you failed exam with our study materials. You will love our 70-762 Prep exam questions as long as you have a try!
MCP 70-762 There is no doubt that you can get a great grade.
You can also try the simulated exam environment with 70-762 - Developing SQL Databases Prep software on PC. So we have adamant attitude to offer help rather than perfunctory attitude. All 70-762 Training Topics test prep is made without levity and the passing rate has up to 98 to 100 percent now.
Our 70-762 Prep practice materials are really reliable. In a word, our 70-762 Prep exam questions have built good reputation in the market. We sincerely hope that you can try our 70-762 Prep learning quiz.
Microsoft 70-762 Prep - It is very easy and convenient to use and find.
As the employment situation becoming more and more rigorous, it’s necessary for people to acquire more 70-762 Prep skills and knowledge when they are looking for a job. Enterprises and institutions often raise high acquirement for massive candidates, and aim to get the best quality talents. Thus a high-quality 70-762 Prep certification will be an outstanding advantage, especially for the employees, which may double your salary, get you a promotion. So choose us, choose a brighter future.
Our experts are constantly looking for creative way to immortalize our 70-762 Prep actual exam in this line. Their masterpieces are instrumental to offer help and improve your performance in the real exam.
70-762 PDF DEMO:
QUESTION NO: 1
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You have a table that has a clustered index and a nonclustered index. The indexes use different columns from the table. You have a query named Users report that Query1 takes a long time to report results. You run and review the following statistics for an index seek operation:
You need to resolve the performance issue.
Solution: You rebuild the clustered index.
Does the solution meet the goal?
A. No
B. Yes
Answer: A
Explanation
The query uses the nonclustered index, so improving the clustered index will not help.
We should update statistics for the nonclustered index.
QUESTION NO: 2
You are reviewing the execution plans in the query plan cache. You observe the following:
- There are a large number of single use plans.
- There are a large number of simple execution plans that use multiple CPU cores.
You need to configure the server to optimize query plan execution.
Which two setting should you modify on the properties page for the Microsoft SQL Server instance?
To answer, select the appropriate settings in the answer area.
Answer:
Explanation
* Optimize for ad hoc workloads
The optimize for ad hoc workloads option is used to improve the efficiency of the plan cache for workloads that contain many single use ad hoc batches. When this option is set to 1, the Database
Engine stores a small compiled plan stub in the plan cache when a batch is compiled for the first time, instead of the full compiled plan. This helps to relieve memory pressure by not allowing the plan cache to become filled with compiled plans that are not reused.
* Cost Threshold for Parallelism
Use the cost threshold for parallelism option to specify the threshold at which Microsoft SQL Server creates and runs parallel plans for queries. SQL Server creates and runs a parallel plan for a query only when the estimated cost to run a serial plan for the same query is higher than the value set in cost threshold for parallelism. The cost refers to an estimated elapsed time in seconds required to run the serial plan on a specific hardware configuration.
5 means 5 seconds, but is is 5 seconds on a machine internal to Microsoft from some time in the
1990s.
There's no way to relate it to execution time on your current machine, so we treat it as a pure number now.
Raising it to 50 is a common suggestion nowadays, so that more of your simpler queries run on a single thread.
QUESTION NO: 3
Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
The Account table was created by using the following Transact-SQL statement:
There are more than 1 billion records in the Account table. The Account Number column uniquely identifies each account. The ProductCode column has 100 different values. The values are evenly distributed in the table. Table statistics are refreshed and up to date.
You frequently run the following Transact-SQL SELECT statements:
You must avoid table scans when you run the queries.
You need to create one or more indexes for the table.
Solution: You run the following Transact-SQL statement:
CREATE CLUSTERED INDEX PK_Account ON Account(ProductCode);
Does the solution meet the goal?
A. No
B. Yes
Answer: A
Explanation
We need an index on the productCode column as well.
References: https://msdn.microsoft.com/en-us/library/ms190457.aspx
QUESTION NO: 4
Database users report that SELECT statements take a long time to return results. You run the following Transact-SQL statement:
You need to create one nonclustered covering index that contains all of the columns in the above table. You must minimize index key size.
Which Transact-SQL statement should you run?
A. CREATE NONCLUSTERED INDEX IX_User ON Users (UserStatus, CountryCode) INCLUDE
(UserName);
B. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserStatus, UserName);
C. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserStatus) INCLUDE
(UserName);
D. CREATE NONCLUSTERED INDEX IX_User ON Users (CountryCode, UserName);
Answer: C
Explanation
https://docs.microsoft.com/en-us/sql/relational-databases/indexes/create-indexes-with-included- columns
QUESTION NO: 5
You have a reporting application that uses a table named Table1. You deploy a new batch update process to perform updates to Table1.
The environment is configured with the following properties:
* The database is configured with the default isolation setting.
* The application and process use the default transaction handling.
You observe the application cannot access any rows that are in use by the process.
You have the following requirements:
* Ensure the application is not blocked by the process.
* Ensure the application has a consistent view of the data
* Ensure the application does not read dirty data.
You need to resolve the issue and meet the requirements with the least amount of administrative effort.
What should you do?
A. Enable the database for the READ_COMITTED_SNAPSHOT isolation level.
B. Enable the database for the ALLOW_SNAPSHOT_ISOLATION isolation level. Modify the application and the update process for the SNAPSHOT isolation level.
C. Enable the database for the ALLOW_SNAPSHOT_ISOLATION isolation level. Modify the application for the SERIALIZABLE isolation level.
D. Enable the application for the WITH (NOLOCK) hint.
Answer: A
Explanation
Snapshot isolation must be enabled by setting the ALLOW_SNAPSHOT_ISOLATION ON database option before it is used in transactions. This activates the mechanism for storing row versions in the temporary database (tempdb).
READ COMMITTED is the default isolation level for SQL Server. It prevents dirty reads by specifying that statements cannot read data values that have been modified but not yet committed by other transactions. Other transactions can still modify, insert, or delete data between executions of individual statements within the current transaction, resulting in non-repeatable reads, or "phantom" data.
ISACA CRISC - There is an old saying goes, good memory is inferior to sodden ability to write, so we believe that it is a highly productive way for you to memory the knowledge point and review the reference books more effectively. Salesforce Education-Cloud-Consultant exam questions can fuel your speed and help you achieve your dream. To keep with such an era, when new knowledge is emerging, you need to pursue latest news and grasp the direction of entire development tendency, our Cisco 200-301-KR training questions have been constantly improving our performance and updating the exam bank to meet the conditional changes. You may worry there is little time for you to learn the SAP C-SIGPM-2403 study tool and prepare the exam because you have spent your main time and energy on your most important thing such as the job and the learning and can’t spare too much time to learn. So if you are in a dark space, our SAP C-S4CFI-2402 exam questions can inspire you make great improvements.
Updated: May 28, 2022