Online Access Free 070-483 Practice Test

You are developing an application that will use multiple asynchronous tasks to optimize performance.
You create three tasks by using the following code segment. (Line numbers are included for reference only.)

You need to ensure that the ProcessTasks() method waits until all three tasks complete before continuing.
Which code segment should you insert at line 09?

• A.Task.WaitFor(3);
• B.Task.WaitAll(tasks);
• C.tasks.Yield();
• D.tasks.WaitForCompletion();

You are developing an application by using C#. The application includes the following code segment. (Line numbers are included for reference only.)

The DoWork() method must not throw any exceptions when converting the obj object to the IDataContainer interface or when accessing the Data property.
You need to meet the requirements. Which code segment should you insert at line 07?

• A.var dataContainer = obj is IDataContainer;
• B.var dataContainer = (IDataContainer)obj;
• C.dynamic dataContainer = obj;
• D.var dataContainer = obj as IDataContainer;

You are developing an application by using C#. The application will write events to an event log. You plan to deploy the application to a server.
You create an event source named AppSource and a custom log named AppLog on the server.
You need to write events to the custom log.
Which code segment should you use?

• A.Option B
• B.Option D
• C.Option C
• D.Option A

You write the following code.

You need to get the list of all the types defined in the assembly that is being executed currently.
How should you complete the code? To answer, drag the appropriate code elements to the correct targets in the answer area. Each code element 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:

Explanation:
The AppDomain.CurrentDomain.GetAssemblies() gives you all assemblies loaded in the current application domain.
The Assembly class provides a GetTypes() method to retrieve all types within that particular assembly.
Example: Using Linq:
IEnumerable<Type> types =
from a in AppDomain.CurrentDomain.GetAssemblies()
from t in a.GetTypes()
select t;

You are developing a method named CreateCounters that will create performance counters for an application.
The method includes the following code. (Line numbers are included for reference only.)

You need to ensure that Counter1 is available for use in Windows Performance Monitor (PerfMon).
Which code segment should you insert at line 16?

• A.CounterType = PerformanceCounterType.SampleBase
• B.CounterType = PerformanceCounterType.AverageBase
• C.CounterType = PerformanceCounterType.CounterMultiBase
• D.CounterType = PerformanccCounterType.RawBase