DOT NET Interview Questions - DotNetSpider

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Shared Shared locks (S) allow transactions to read data with SELECT statements. Other connections are allowed to read the data at the same time; however, no transactions are allowed to modify data until the shared locks are released. Update Update locks (U) are acquired just prior to modifying the data. If a transaction modifies a row, then the update lock is escalated to an exclusive lock; otherwise, it is converted to a shared lock. Only one transaction can acquire update locks to a resource at one time. Using update locks prevents multiple connections from having a shared lock that want to eventually modify a resource using an exclusive lock. Shared locks are compatible with other shared locks, but are not compatible with Update locks. Exclusive Exclusive locks (X) completely lock the resource from any type of access including reads. They are issued when data is being modified through INSERT, UPDATE and DELETE statements. Schema Schema modification locks (Sch-M) are acquired when data definition language statements, such as CREATE TABLE, CREATE INDEX, ALTER TABLE, and so on are being executed. Schema stability locks (Sch-S) are acquired when store procedures are being compiled. Bulk Update Bulk update locks (BU) are used when performing a bulk-copy of data into a table with TABLOCK hint. These locks improve performance while bulk copying data into a table; however, they reduce concurrency by effectively disabling any other connections to read or modify data in the table. (I)Can we suggest locking hints to SQL SERVER ? We can give locking hints that help's you override default decisions made by SQL Server. For instance, you can specify the ROWLOCK hint with your UPDATE statement to convince SQL Server to lock each row affected by that data modification. Whether it's 204
prudent to do so is another story; what will happen if your UPDATE affects 95% of rows in the affected table? If the table contains 1000 rows, then SQL Server will have to acquire 950 individual locks, which is likely to cost a lot more in terms of memory than acquiring a single table lock. So think twice before you bombard your code with ROWLOCKS. (I)What is LOCK escalation? Lock escalation is the process of converting a lot of low level locks (like row locks, page locks) into higher level locks (like table locks). Every lock is a memory structure too many locks would mean, more memory being occupied by locks. To prevent this from happening, SQL Server escalates the many fine-grain locks to fewer coarse-grain locks. Lock escalation threshold was definable in SQL Server 6.5, but from SQL Server 7.0 onwards it's dynamically managed by SQL Server. (B)What are the different ways of moving data/ databases between servers and databases in SQL Server? There are lots of options available, you have to choose your option depending upon your requirements. Some of the options you have are: BACKUP/RESTORE, detaching and attaching databases, replication, DTS, BCP, logshipping, INSERT...SELECT, SELECT...INTO, creating INSERT scripts to generate data. (I)What are advantages of SQL 2000 over SQl 7.0 ? √ √ User-Defined Functions: User-Defined Functions (UDFs) -- one or more Transact-SQL statements can be used to encapsulate code for reuse. Userdefined functions cannot make a permanent changes to the data or modify database tables. UDF can change only local objects for a UDF, such as local cursors or variables. Distributed Partitioned Views: Distributed partitioned views allow you to partition tables horizontally across multiple servers. So, you can scale out one database server to a group of database servers that cooperate to provide the same performance levels as a cluster of database servers. Due to distributed partitioned views, SQL Server 2000 now on the first place in the tpc-c tests. 205
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Beta Release 1.0 DOT NET Interview
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How can we use COM Components in .N
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Can you show a simple code showing
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What’s the use of @ Register dire
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I want to force the datareader to r
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Who is a stakeholder ? ............
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√ √ √ .NET interviewers who a
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Note While reading you can come acr
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√ Project Manager are expected to
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Microsoft introduced Common Type Sy
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Visual Studio .NET 2003\SDK\v1.1\Bi
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(A) What is Manifest? Figure :- 1.2
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√ Go to “Visual Studio Command
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Figure:- 1.7 Click on project and t
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(B) What is Delay signing ? During
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Note :- Sample source code are comp
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(B) What’s difference between VB.
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(I)What is a satellite assembly? In
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√ √ √ Using Type library impo
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√ The second way to create CCW us
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√ Type is the return type of the
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pDesired) checks to see if the curr
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√ √ Figure :- 2.3 Add reference
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There are 5 transactions types that
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Binary Compatibility VB makes it po
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Private Sub Form1_Load(ByVal sender
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the .NET runtime determines that it
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SyncLock x 'Do something with x End
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(I) How can you avoid deadlock in t
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Figure :- 4.2 Channels,Formatters a
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Implements InterFaceRemoting.InterF
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Console.WriteLine(“Referenced the
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√ By Keyword “New”. (A) Are C
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When total object lifetime is reduc
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mode=”SingleCall” type=”Serve
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Non-Default constructors can not be
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(B) What is UDDI ? Full form of UDD
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Figure :- 4.8 Create Web project me
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Figure :- 4.9 Create WebService Pro
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Figure :- 4.11 Click on Add Web Ref
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Figure :- 4.13 Solution showing the
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√ Finally you are able to see you
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Webservices as such do not have any
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(P)Can you show a simple code showi
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√ √ VaryByCustom:-Lets you cust
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√ By default Session objects are
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√ View state is good for caching
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√ All browsers support query stri
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Abstraction It allows complex real
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Public Class ClsChild Inherits ClsP
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Public Class ClsChild Inherits ClsA
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(A) What is difference between abst
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Public Class FrmWithEvents Inherits
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Figure :- 6.6 Shadowing in Action (
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(I) Why can not you specify accessi
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Figure :- 6.7 Shared/Static In Acti
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It provides a way to define and use
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Figure :- 6.8 Garbage collection in
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instance and be used with out creat
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(B) How do we assign page specific
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CustomValidator Used to define User
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can say the following authenticatio
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Digest authentication requires that
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With this setting, all the requests
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√ ASP.NET supports full language
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Application_PreSendContent: Fired b
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WebUIValidation.js javascript file
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√ √ √ .ashx, for custom ASP.N
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The above mapping shows which funct
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(I)How do you upload a file in ASP.
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Figure: - 7.5 High isolation scenar
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√ Remove anonymous access to the
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(I)What are the steps to create a w
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8..NET Architecture (B) What are de
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The below two class diagrams will p
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√ revisions metrics version contr
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√ 13. Free exams (Thanks to www.m
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DOT NET Interview Questions - DotNetSpider

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