Re: Help answer these 70-310 questions
From: Bruno van Dooren (microvax_at_hotmail.com)
Date: 02/23/04
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Date: Mon, 23 Feb 2004 11:52:53 +0100
I recommend that you learn the .NET framework yourself, instead of having
other people answer your questions so that you can memorize the answers.
the reason for certification is to verify your skills as a programmer, not
to get a piece of paper with as little effort as possible.
kind regards,
Bruno.
"David" <anonymous@discussions.microsoft.com> wrote in message
news:13c1a01c3f928$b590ce40$a101280a@phx.gbl...
> Please help answer these 70-310 questions. Thank you.
>
> 1. You create an XML Web service named PostalCode. Your
> project source includes a code-behind file and a file
> named PostalCode.asmx. During implementation, you use the
> Debug class to record debugging log messages, to verify
> parameter values, and to report
> debugging failures. You want to deploy PostalCode to a
> production computer. You do not want any of the debugging
> code to execute on the production computer. What should
> you do?
>
> a. Set the project's active configuration to Release and
> rebuild the DLL.
> b. Modify the trace element of the Web.config file by
> setting the enabled attribute to "false".
> c. Modify the compilation element of the Web.config file
> by setting the debug attribute to "false".
> d. Add code to the constructor of the PostalCode class to
> set the AutoFlush property of the Debug class to false.
> e. Add code to the constructor of the PostalCode class to
> call the Clear method of the Debug.Listeners property.
>
> 2. You are using Visual Studio .NET to develop an
> application that uses a non-COM DLL named
> UsefuiFunetices.dll. This DLL is written in unmanaged
> code. One function in the DLL performs encryption. This
> function takes two arguments. One argument is the string
> to be encrypted. The other argument is the resulting
> encrypted string. The function returns an integer that is
> an error code. You must ensure that your application uses
> this function correctly. Which code segment should you
> use?
>
> a. Public Shared Function encrypt(ByVal input As String,
> ByVal out As StringBuilder) As Integer
> End Function
> Dim input As String = "content to encrypt"
> Dim output As New StringBuilder(500)
> Dim enCode As Integer = encrypt(input, output)
> b. Public Shared Function encrypt(ByVal input As String,
> ByVal out As String) As Integer
> End Function
> Dim input As String = "content to encrypt"
> Dim output As New StringBuilder(500)
> Dim errCode As Integer = encrypt(input, output.ToString())
> c. Public Shared Function encrypt(ByVal input As String,
> ByVal out As String) As Integer
> End Function
> Dim input As String "content to encrypt"
> Dim output As String = ""
> Dim errCode As Integer = encrypt(input, output)
> d. Public Shared Function encrypt(ByVal input As String,
> ByRef out As String) As Integer
> End Function
> Dim input As String = "content to encrypt"
> Dim output As String("x")
> Dim errCode As Integer = encrypt(input, output)
> 3. You are creating a serviced component named
> EmployeeLocations. This component will return a current
> list of employees in a given city. The list of employee
> locations changes nightly. EmployeeLocations must load an
> XML file named Emploc.xml nightly. EmployeeLocations
> contains one method named EmployeeslnCity. EmployeeslnCity
> takes a string city code and returns an array of Employee
> objects. EmployeeLocations will use the XML data to return
> lists of employees for a city throughout each day.
> EmployeeLocations must respond to EmployeeslnCity method
> calls as quickly as possible. What should you do?
>
> a. Each night, load Emploc.xml into a MemoryStream object.
> For each request, use an XmlTextReader to locate the
> requested city and then the employees within that city.
> b. Each night, load Emploc.xml into an XPathDocument
> object.
> For each request, use the XPathNavigator.
> Select method to create an XPathNodelterator object.
> Use the XPathNodelterator object to return the list of
> employees.
> c. Each night, load Emploxml into an XmlDocument object.
> For each request, use the XmlDocument.GetElementsByTagName
> method to create an XmlNodeList object, which will
> contain the appropriate employee list.
> d. Each night, load Emploc.xml into an XmlDataDocument
> object.
> For each request, use the
> XmlDataDocument.GetElementsByTagName method to create an
> XmlNodeList object, which will
> contain the appropriate employee list.
>
> 4. You create a strongly named serviced component. The
> component uses a third-party .NET assembly named
> Fabrikam.Encryptor.dll to perform encryption and
> decryption. Fabrikam.Encryptor.dll is registered in the
> global assembly cache. You deploy the serviced component
> and Fabrikam.Encryptor.dll to a production computer. A new
> version of Fabrikam.Enciyptor.dll becomes available. You
> remove the original version and install the new version on
> the production computer. The serviced component throws a
> System.TypeLoadException when it attempts to use
> Fabrikam.Encryptor.dll. You need to correct this problem.
> What should you do?
>
> a. Unregister and then re-register the serviced component
> in the global assembly cache.
> b. Use the Strong Name tool (Sn.exe) to create a new key
> file for the serviced component.
> c. Create a configuration file named Dllhost.exe.config to
> redirect the serviced component to the new version of
> Fabrikam.Encryptor.dll.
> d. Create a Publisher Policy assembly for
> Fabrikam.Encryptor.dll and register the assembly in the
> global assembly cache.
>
> 5. You write a serviced component named OrderProcessing
> that processes customer orders. You cache the product list
> and customer list within OrderProcessing to improve
> response time.
> OrderProcessing has a method named ValidateCache that
> validates the contents of the cache. ValidateCache
> includes the following method signature: Public Sub
> ValidateCache(ByVal name As String) You want to call
> ValidateCache during development and testing. You do not
> want to call ValidateCache when you release your component
> for deployment. You want to accomplish this task by
> writing the minimum amount of code. Which code segment
> should you use?
>
> a. Public Sub ValidateCache(ByVal name As String)
> Debug.Assert(False)
> 'Method body goes here.
> End Sub
> b. #If DEBUG Then
> Public Sub ValidateCache(ByVal name As String)
> ' Method body goes here.
> End Sub
> #End If
> c. Public Sub ValidateCache(ByVal name As String)
> 'Method body goes here.
> End Sub
> d. <Conditional("DEBUG")> _
> Public Sub ValidateCache(ByVal name As String)
> ' Method body goes here.
> End Sub
>
> 6. You create an XML Web service named LatLong that
> converts street addresses to latitude and longitude
> coordinates. Your company charges for this service and
> allows only existing customers to use the service. If a
> customer ID is not passed as part of a SOAP header, you
> want the service to refuse the request. You want these
> service refusal messages to be logged to an event log
> named LatLongLog. You anticipate that there will be a lot
> of these log entries
> overtime. A String object named refusalMessage contains
> the message to log. Which code segment should you use?
>
> a. Dim log As New EventLog("LatLongLog")
> log.WriteEntry(refusalMessage, EventLogEntryType.Error)
> b. Dim log As New EventLog()
> log.Source = "LatLongLog"
> log.WriteEntry(refusalMessage, EventLogEntryType.Error)
> c. If Not EventLog.SourceExists("LatLongSource") Then
> EventLog.CreateEventSource("LatLongLog")
> End If
> EventLog.WriteEntry("LatLongSource", refusalMessage,
> EventLogEntryType.Error)
> d. If Not EventLog.SourceExists("LatLongSource") Then
> EventLog.CreateEventSource("LatLongSource", "LatLongLog")
> End If
> Dim log As New EventLog("LatLongLog")
> log.WriteEntry(refusalMessage, EventLogEntryType.Error)
>
> 7. You use a serviced component named FabrikamComponent in
> three applications on your computer. Over the past six
> months,
> you have received a number of updates to
> FabrikamComponent, all of which you have registered in the
> global assembly cache. As a result, you discover that one
> application is using version 1.0.2.0, another application
> is using version 1.0.3.0, and a third application is using
> version 1.0.5.0. You now receive version 2.0.0.0 of
> FabrikamComponent, which is a critical update. You
> register version 2.0.0.0 in the global assembly cache. You
> verify that version 2.0.0.0 is backward compatible. You
> need to ensure that all three of your applications use
> version 2.0.0.0. You want to accomplish this task without
> having to recompile all three applications. What should
> you do?
>
> a. Create a Publisher Policy for FabrikamComponent that
> redirects all prior versions to version 2.0.0.0.
> b. In the Assembly file of each application,set the
> assembly version of FabrikamComponent to version 2.0.0.0.
> c. In the Machine.config file, configure a binding policy
> that sets the CodeBase property of FabrikamComponent to
> version
> 2.0.0.0.
> d. In the Machine.config file, configure a binding policy
> for FabrikamComponent that redirects all prior versions to
> version 2.0.0.0
>
> 9. You create a .NET remoting object named DocumentStore.
> DocumentStore is a server-activated singleton object. It
> uses a TcpChannel to listen on port 9000. The object URI
> for DocumentStore. You need to write a client application
> to use DocumentStore from a computer named ServerA. Which
> code segment should you use?
>
> a. RemotingConfiguration.Configure("tcp//ServerA:
> 9000/DocumentStore")
> Dim doc As New DocumentStore()
> b. Dim t As Type t = GetType(DocumentStore)
> RemotingConfiguration.RegisterWellKnownClientType
> (t, "TcpChannel, 9000 ServerA")
> Dim doc As New DocumenrtStore()
> c. Dim t As Type
> Dim Temp As Object
> Dim doc As DocumentStore
> t = GetType(DocumentStore)
> temp = Activator.CreateInstance
> (t, "tcp://serverA:9000/DocumentStore")
> doc = CType(temp, DocumentStore)
> d. Dim t As Type
> Dim temp As Object
> Dim doc As DocumentStore
> ChannelServices.RegisterChannel(New TcpChannel(9000))
> t = GetType(DocumentStore)
> temp = Activator.CreateInstance(t, "ServerA")
> doc = CType(temp, DocumentStore)
>
> 10. You are creating a serviced component named
> UserManager. UserManager adds user accounts to multiple
> transactional data sources. The UserManager class includes
> the following code segment.
> <Transaction(TransactionOption.Required), securityRole
> ("Admin")> _
> Public Class UserManager
> Inherits ServicedComponent
> Public Sub AddUser(ByVal name As String, ByVal password As
> String)
> 'Code to add the user to data source goes here.
> End Sub
> End Class
> You must ensure that the AddUser method reliably saves the
> new user to either all data sources or no data sources.
> What should you do?
>
> a. To AddUser, add the following attribute:
> <AutoComplete()>
> b. To UserManager, add the following attribute:
> <JustIntimeActivation(false)>
> c. To the end of AddUser, add the following line of code:
> ContextUtil.EnableCommit()
> d. To the end of AddUser, add the following line of code:
> ContextUtil.MyTransactionVote = True
>
> 11. You are creating a .NET Remoting object named
> PropertyCache. PropertyCache will hold a HashTable object
> or name/value pairs. A variety of remote client
> application will communicate with PropertyCache to set and
> get property values. You need to ensure that properties
> set by one client application are also accessible to other
> client applications.
> Which two actions should you take (Each correct answer
> presents part of the solution)? (Choose two)
>
> a. Configure Property to be a client-activated object
> b. Configure Property to be a server-activated Singleton
> object
> c. Configure Property to be a server-activated SinglCall
> object
> d. Derive the PropertyCache class from MarshalByRefObject
> and override InitilizeLifetimeService() to return null.
> e. Mark the PropertyCach class with the serializable
> attribute Implement the ISponsor interface in the
> PropertyCache class
> f. Implement the ISerializable and ILease interfaces in
> the PropertyCache class. Implement ILease.CurentLeaseTime
> to
> return Int32.MaxValue.
>
> 12. You are creating a serviced component named
> TravelItinerary included the following code segment:
> <Transaction(TransactionOption.Required)> _
> Public Class TravelItinerary
> Inherits ServiceComponent
> <AutoComplete()> _
> Public Function SaveIntenerary(ByVal tavelData As DataSet)
> As DataSet
> Dim airline As New AirlineAService()
> Dim hotel As New HotelService.HotelService()
> airline.ReserveFlight(travelData)
> 'Code to record reservation in database goes here.
> hotel.ReserveHotel(travelData)
> 'Code to record reservation in database goes here.
> Return TravelData
> End Function
> End Class
> The TransactionOption property of both ReserveFlight and
> ReserveHotel is set to TransactionOption.Required.
> You create an application to test TravelItinarary. When
> the test application is run, an exception is thrown in
> HotelsService.
> How are transactions in TravelItinerary and in each Web
> service affected by this exception?
>
> a. All transactions are rolled back.
> b. Transactions in only HotelService are rolled back.
> Transactions in only TravelItinerary and AirelineService
> remain committed.
> c. Transactions in only HotelsService and TravelItinerary
> are rolled back.
> Transaction in only AirlineService remain committed.
> d. Transactions in only Aireline Service and
> TravelItinerary are rolled back.
> Transaction in only HotelService remain committed.
>
> 13. You have a SqlDataReader object named orderDataReader.
> This object contains a column named OrderQuantity as an
> integer value. This object also contains one row for each
> order received during the previous week. You need to write
> code that will process each row in ordersDataReader and
> passOrderQuantity to a function named RSFunction. Which
> code segment should you use?
>
> a. While ordersDataReader.Read
> CallRSFunction(ordersDataReader("OrderQuantity"))
> End While.
> b. While ordersDataReader.Read.Next
> CallRSFunction(ordersDataReader("OrderQuantity"))
> End While
> c. Dim orderCount As Integer
> While orderCount < ordersDataReader.FieldCount
> Call RSFunction(ordersDataReader("OrderQuantity"))
> orderCount + = 1
> ordersDataReader.Read
> End While
> d. Dim orderCount As Integer
> While orderCount < ordersDataReader.FieldCount
> Call RSFunction(ordersDataReader("OrderQuantity"))
> orderCount += "1"
> ordersDataReader.NextResult
> End While
>
> 14. You are using Visual Studio .NET to develop an
> application. You have a comon business logic component
> that was created in COM that you want to use until you can
> replace it with Visual Studio .NET code. What should you
> do?
>
> a. Register the COM component by using Regsvr32.exe.
> b. Run The Type Library Exporter (Tlbexp.exe) and pass the
> COM component as the filename parameter
> c. Use Visual Studio .NET to add a reference to the COM
> component.
> d. Run the assembly Registration tool (Regasm.exe) and
> pass the COM component as thefilename parameter.
>
> 15. You create a class named BankAccount that represents a
> customer's bank account.
> BankAccount includes the following code segment:
> Public Class BankAccount
> Public ReadOnly Property Accountld() As String
> Get Return acctId
> End Get
> End Property
> Public ReadOnly Property Balance() As Decimal
> Get Return bal
> End Get
> End Property
> Sub New(ByVal accountId As String, ByVal balance As
> Decimal)
> acctId = accountId
> bal = balance
> End Sub
> Private acctId As String
> Private bal As Decimal
> End Class
> You are now creating a .NET Remoting object named Teller.
> The Teller class returns lists of BankAccount objects. You
> anticipate that large numbers of client applications will
> use the Teller object to retrieve BankAccount objects. You
> want to ensure that network traffic is minimized. What
> should you do?
>
> a. Add the Serializable attribute to the BankAccount class.
> b. Add the NonSerialized attribute to the BankAccount
> class.
> c. Derive the BankAccount class from MarshalByRefObject.
> d. Implement the ISerializable interface in the
> BankAccount class.
>
> 16. You create an XML Web service named TimeService. Each
> time TimeService is started, it checks for the existence
> of an event log named TimeServiceLog. If TimeServiceLog
> does not exist, timeService create it. You discover that
> when TimerService create TimeServiceLog, it throws a
> System.Security.Security.Exception. The exception include
> following message: "Requested registry access is not
> allowed". You need to resolve this problem What should you
> do?
>
> a. Configure Inetinfo.exe to run as the local
> administrator user account
> b. Create an installer for TimeService, and create the new
> event log in the installer code.
> c. Modify the Web.config file by adding an identity
> element to impersonate the LOGON user specified by Internet
> Information Service (IIS).
> d. Modify the permission of the
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventl
> og registry key to give
> full control to the IUSR_computername user account
>
> 17. You create an XML Web service named PhoneNumberService
> that returns the telephone numbers of people in a
> specified geographical region. If an error occurs when the
> service is processing requests, a custom application
> exception named PhoneNumberException that may be thrown.
> You create an ASP.NET application named LSPhoneBook that
> contains a Web reference to PhoneNumberService. You need
> to wrap any calls made to PhoneNumberService in a
> try/catch block to catch any PhneNumberException that may
> be thrown Which two code segments are possible ways to
> achieve this goal (Each correct answer presents a complete
> solution.)? (Choose two)
>
> a. Try
> 'Code to call PhoneNumberService method goes here.
> Catch ex As SoapExeption
> 'Handle the Exception
> End Try
> b. Try
> 'Code to call PhoneNumberService method goes here.
> Catch ex As SoapHeaderExeption
> 'Handle the Exception
> End Try
> c. Try
> 'Code to call PhoneNumberService method goes here.
> Catch ex As Exeption
> 'Handle the Exception
> End Try
> d. Try
> 'Code to call PhoneNumberService method goes here.
> Catch ex As ApplicationExeption
> 'Handle the Exception
> End Try
>
- Next message: Travis Owens: "re: VC++ certification, get C# instead"
- Previous message: Bruno van Dooren: "Re: installing VS.net"
- In reply to: David: "Help answer these 70-310 questions"
- Next in thread: Eric: "Re: Help answer these 70-310 questions"
- Reply: Eric: "Re: Help answer these 70-310 questions"
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