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Vendor: Microsoft Exam Code: 70-762 Exam Name: Developing SQL Databases Version: 13.02 Q & As: 113
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The Latest 70-762 Exam ☆ Instant Download ☆ Free Update for 180 Days
QUESTION 1 DRAG DROP You are analyzing the performance of a database environment. Applications that access the database are experiencing locks that are held for a large amount of time. You are experiencing isolation phenomena such as dirty, nonrepeatable and phantom reads. You need to identify the impact of specific transaction isolation levels on the concurrency and consistency of data. What are the consistency and concurrency implications of each transaction isolation level? To answer, drag the appropriate isolation levels to the correct locations. Each isolation level 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.
Correct Answer:
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QUESTION 2 You are developing an application that connects to a database. The application runs the following jobs:
The READ_COMMITTED_SNAPSHOT database option is set to OFF, and auto-content is set to ON. Within the stored procedures, no explicit transactions are defined. If JobB starts before JobA, it can finish in seconds. If JobA starts first, JobB takes a long time to complete. You need to use Microsoft SQL Server Profiler to determine whether the blocking that you observe in JobB is caused by locks acquired by JobA. Which trace event class in the Locks event category should you use? A. B. C. D.
LockAcquired LockCancel LockDeadlock LockEscalation
Correct Answer: A Explanation: The Lock: Acquiredevent class indicates that acquisition of a lock on a resource, such asa data page, has been achieved. The Lock: Acquired and Lock:Released event classes can be used to monitor when objects are being locked, the typeof locks taken, and for how long the locks were retained. Locks retained for long periods of time may cause contention issues and should be investigated.
QUESTION 3 Note: This question is part of a series of questions that use the same or similar answer choices. An Answer choice may be correct for more than one question in the series. Each question independent of the other questions in this series. Information and details provided in a question apply only to that question. You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three Microsoft SQL Server instances. There are many SQL jobs that run during off-peak hours.
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You observe that many deadlocks appear to be happening during specific times of the day. You need to monitor the SQL environment and capture the information about the processes that are causing the deadlocks. What should you do? A. B. C. D. E. F. G. H.
A.Create a sys.dm_os_waiting_tasks query. Create a sys.dm_exec_sessions query. Create a PerformanceMonitor Data Collector Set. Create a sys.dm_os_memory_objects query. Create a sp_configure `max server memory' query. Create a SQL Profiler trace. Create a sys.dm_os_wait_stats query. Create an Extended Event.
Correct Answer: F Explanation: Toview deadlock information, the Database Engine provides monitoring tools in the form of two trace flags, and the deadlock graph event in SQL Server Profiler. Trace Flag 1204 and Trace Flag 1222 When deadlocks occur, trace flag 1204 and trace flag 1222 return information that is captured in the SQL Server error log. Trace flag 1204 reports deadlock information formatted by each nodeinvolved in the deadlock. Trace flag 1222 formats deadlock information, first by processesand then by resources. It is possible to enable both trace flags to obtain two representations of the same deadlock event. References: https://technet.microsoft.com/en-us/library/ms178104(v=sql.105).aspx
QUESTION 4 You have a database that is experiencing deadlock issues when users run queries. You need to ensure that all deadlocks are recorded in XML format. What should you do? A. B. C. D.
Create a Microsoft SQL Server Integration Services package that uses sys.dm_tran_locks. Enable trace flag 1224 by using the Database Cpmsistency Checker(BDCC). Enable trace flag 1222 in thestartup options for Microsoft SQL Server. Use the Microsoft SQL Server Profiler Lock:Deadlock event class.
Correct Answer: C Explanation: When deadlocks occur, trace flag 1204 and trace flag 1222 return information that is capturedin the SQL Server error log.Trace flag 1204 reports deadlock information formatted by each node involved in the deadlock. Trace flag 1222 formats deadlock information, first by processes and then by resources. The output format for Trace Flag 1222 only returns information in an XML-like format. References: https://technet.microsoft.com/en-us/library/ms178104(v=sql.105).aspx
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QUESTION 5 DRAG DROP You have a trigger named CheckTriggerCreation that runs when a user attempts to create a trigger. The CheckTriggerCreation trigger was created with the ENCRYPTION option and additional proprietary business logic. You need to prevent users from running the ALTER and DROP statements or the sp_tableoption stored procedure. Which three Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the correct order.
Correct Answer:
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QUESTION 6 HOTSPOT You are developing an app that allows users to query historical company financial data. You are reviewing email messages from the various stakeholders for a project. The message from the security officer is shown in the Security Officer Email exhibit below. TO: Database developer From: Security Officer Subject: SQL object requirements We need to simplify the security settings for the SQL objects. Having a assign permissions at every object in SQL is tedious and leads to a problem. Documentation is also more difficult when we have to assign permissions at multiple levels. We need to assign the required permissions at one object, even though that object may be obtaining from other objects. The message from the sales manager is shown in the Sales Manager Email exhibit below. TO: Database developer From: Sales Manager Subject: Needed SQL objects When creating objects for our use, they need to be flexible. We will be changing the base infrastructure frequently. We need components in SQL that will provide backward compatibility to Guaranteed Success with EnsurePass VCE Software & PDF File
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our front end applications as the environments change so that do not need to modify the front end applications. We need objects that can provide a filtered set of the data. The data may be coming from multiple tables and we need an object that can provide access to all of the data through a single object reference. This is an example of the types of data we need to be able to have queries against without having to change the front end applications.
The message from the web developer is shown in the Web Developer Email exhibit below. TO: Database developer From: Web Developer Subject: SQL Object component Whatever you will be configuring to provide access to data in SQL, it needs to connect using the items referenced in this interface. We have been using this for a long time, and we cannot change this from end easily. Whatever objects are going to be used in SQL they must work using object types this interface references.
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You need to create one or more objects that meet the needs of the security officer, the sales manager and the web developer. For each of the following statements, select Yes if the statement is true. Otherwise, select No.
Correct Answer:
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QUESTION 7 DRAG DROP You are analyzing the performance of a database environment. You suspect there are several missing indexes in the current database. You need to return a prioritized list of the missing indexes on the current database. How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each TransactSQL 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.
Correct Answer:
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QUESTION 8 DRAG DROP You are evaluating the performance of a database environment. You must avoid unnecessary locks and ensure that lost updates do not occur. You need to choose the transaction isolation level for each data scenario. Which isolation level should you use for each scenario? To answer, drag the appropriate isolation levels to the correct scenarios. Each isolation 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.
Correct Answer:
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QUESTION 9 DRAG DROP You are monitoring a Microsoft Azure SQL Database. The database is experiencing high CPU consumption. You need to determine which query uses the most cumulative CPU. How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each TransactSQL segment may be used once, more than one or not at all. You may need to drag the split bar between panes or scroll to view content.
Correct Answer:
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