Pass4sure Microsoft 77-600 v2.73

77-600 MCAS: Windows Vista for the Business Worker

Product DescriptionExam Number/Code: 77-600
Exam Name: Windows Vista for the Business Worker

“Windows Vista for the Business Worker”, also known as 77-600exam, is a Microsoft certification. With the complete collection of questions and answers, Pass4sure has assembled to take you through 50 Q&As to your 77-600 Exam preparation. In the 77-600 exam resources, you will cover every field and category in Microsoft Business Solutions helping to ready you for your successful Microsoft Certification.

QUESTION 221
You work as the application developer at Certkiller .com. You are working on an
application and want to use platform invoke services to call an unmanaged function
from managed code.
How will you accomplish the task?
A. Create a class to store DLL functions. Create prototype methods by using the managed
code.
B. Use COM to register the assembly. Reference the managed code from COM.
C. Export a type library for the managed code.
D. Import a type library as an assembly. Create instances of COM object.
Answer: A
Explanation: It is good practice to wrap the messy P-Invoke code with a .net class.
The main benefit is to keep the client code tidy as the messy and cryptic code will be
hidden away. Also better for maintenance e.g dll name or version changes.
The question explicitly says the unmanaged code should be called with platform invoke
services. Importing\exporting a type library is relevant for interoperation with COM.
QUESTION 222
You work as the application developer at Certkiller .com. You must identify which
specific type meets this criteria: ?
Is always a number.?
Is not greater than 65,535.
Select the type you should use to meet the criteria.
A. Choose System.UInt16
B. Choose int
C. Choose System.String
D. Choose System.IntPtr
Answer: A
Explanation: System.UInt16 is the most efficient type for storing positive whole
numbers up to 65,536.
An int type could be used but it is a lot wider than necessary.
System.String is intended for storing immutable strings.
System.IntPtr is a pointer to a memory address and it’s size is determined by the runtime
platform. It is primarily used for interoperation.
QUESTION 223
You work as the application developer at Certkiller .com. You are working on an

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application named Certkiller App11. Certkiller App11 must be configured to execute a
series of mathematical computations simultaneously.
What should you do next to configure Certkiller App11 to execute a series of
mathematical computations simultaneously?
A. Configure the IdealProcessor property of the ProcessThread object.
B. Configure the ProcessorAffinity property of the ProcessThread object.
C. Call the QueueUserWorkItem method of the ThreadPool class for each calculation
which should be performed by Certkiller App11.
D. Configure the Process.GetCurrentProcess().BasePriority property to be High.
Answer: C
Explanation: The ThreadPool class allows background tasks to run in parallel hence
calculations can be queued to run as soon as a ThreadPool Worker thread becomes
available. Because the ThreadPool can manage many worker threads, calculations
will run in parallel.
ProcessThread.IdealProcessor requests a preferred processor for the thread to run on, it
will not however spawn a new thread – which is what is required here to enable
concurrency.
ProcessorAffinity gets or sets the processors that this thread can be scheduled to run on.
Process.BasePriority gets the base priority of the process.

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