70-536 - 10 - Instrumentation

Front 1

Should the EventLog class be used when using a partial trust environment?

Back 1

No, security risk is too high

Front 2

Which considerations should be taken into account when using EventLog objects?

Back 2

- They can fill up overused
- They should be avoided in all partial trust environments
- They are potential resource hogs

Front 3

What method of the EventLog should be used to clear an EventLog?

Back 3

Use the Clear() method

Front 4

Which logs are available by default in the Windows event log mechanism?

Back 4

- Application
- System
- Security (readonly)

Front 5

What is the EventLog.Source for?

Back 5

The event source indicates what logs the event. It is often the name of the application. Source must be registered with a log. This is done automatically if WriteEntry is used. Mapping a source to another log requires a restart

Front 6

How to create a new LOG and write an entry to it?

Back 6

EventLog e = new EventLog();
e.Log = "MyNewLog";
e.Source = "MyComp";
e.WriteEntry("The entry");
// Source is mandatory as writting an entry

Front 7

How to write to an existing log?

Back 7

EventLog e = new EventLog();
e.Source = "MyComp";
e.Log = "ExistingLog";
e.WriteEntry;

Front 8

What is the CorrelationManager for?

Back 8

The CorrelationManager class provides methods used to store a logical operation identity in a thread-bound context and automatically tag each trace event generated by the thread with the stored identity.

Front 9

What is the Debugger Class for? Describe the characteriscs

Back 9

Enables communication with the Debugger. Only a few methods are of concern.
Break() and Log()

Front 10

What happens when you use the Debugger.Log() method?

Back 10

Whatever Listener is attached to the Debugger gets the message.

Front 11

Describes the steps to add a Listener to a Debugger

Back 11

1. Clear the attached listeners
Trace.Listener.Clear();
2. DefaultTraceListener d = new DefaultTraceListener();
3. Trace.Listener.Add(d);
4. Debugger.Log(intLevel, strCategory, strMessage)

Front 12

Describe the Debug class

Back 12

The Debug class offer more granularity than the Debugger class. Important methods are Assert(), Fail, WriteIf, Print

Front 13

What is the difference between the Debug.Write and Debug.Print method?

Back 13

The Write method writes to the VS console and Print to the attached listeners

Front 14

What are Debug Attributes?

Back 14

Allow developers how to display the debug information about objects

Front 15

What is DebuggerBrowserAttribute?

Back 15

Never - No private members
Collapsed - elements are collapsed
RootHidden - Does not display the root but the child elements

Front 16

What is DebuggerDisplayAttribute

Back 16

Determines how a class or field is displayed in the debugger variable windows.

Front 17

What is DebuggerHiddenAttribute?

Back 17

All Breakpoints are ignored inside in the item it decorates

Front 18

What is DebuggerNonUserCodeAttribute?

Back 18

Debugger will step over the item it decorates

Front 19

What is the DebuggerStepperBoundaryAttribute

Back 19

It is used within DebuggerNonUserCodeAttribute, it allows to see the relevant portion of code.

Front 20

DebuggerStepThroughAttribute

Back 20

Tells the Debugger to step over the code instead of hiding it.

Front 21

DebuggerTypeProxyAttribute

Back 21

If you want to take control over how it is displayed

Front 22

DebuggerVisulaizerAttribute

Back 22

This attribute lets you tell the debugger that you have an associated visualizer for the given class

Front 23

What is the TraceSource class?

Back 23

It provides a mechanism that enalbles the tracing of code execution as well as associating trace messages with their source.

Front 24

What is the TraceSwitch class

Back 24

It allows the developer to manipulate virtually every aspect of the TraceSource class

Front 25

List Listener objects and describe them? Where can they be set?

Back 25

DefaultTraceListener - basic Listener and writes to VS output window
TextWriterTraceListener -
directs output to text file or stream
XmlWriteTraceListener - enhanced functionality like StackTrace
EventLogTraceListener - DelimetedTraceListener - delimeter

All can be in code or in <system.diagnostics><trace><listeners> in web.config

Front 26

What is the main purpose for PrformanceCounterCategory?

Back 26

To manage and manipulate PerformaceCounter objects and their categories

Front 27

Decribe the steps to implement a simple counter

Back 27

1. Create a new CounterCreateDataCollection
2. Create a CounterCreateData object and add it to the collection
3. Create a PerformanceCounterCategory is it doesn't exist
4. Create a PerformanceCounter by passing the category name and the create CounterCreateData object
5. Initialize the RawValue of the PerformanceCounter

Front 28

Name the two ways to start a Process?

Back 28

With Command-Line argumennt and without

Front 29

What classes are to use to start a Process?

Back 29

Firstly use the ProcessInfo class to set the FileName, Arguments(optional), UserName, Password (both optional), UseShellExecute (set to false when using User/Pass).
Then pass the ProcessInfo instance to the Process.Start() method

Front 30

What is a StackTrace?

Back 30

It provides a convenient way to obtain a Stack trace an exception object or a specific thread from the current point in code. It contains a list of StackFrames, which is not intended to be used directly. LIFO

Front 31

What is a process?

Back 31

A process is an executing application, with an unique identifier to differentiate it from other processes. Processes are mechanisms that allow appliucation to run safely isolated from other applications.

Front 32

What class is provided to managed sensitive data?

Back 32

SecureString

Front 33

What is WMI?

Back 33

Windows Management Instrumentation that allows you to monitor virtually every piece of the system (locally and remotley) as well as control the windows operating system

Front 34

What standard does WMI use to represent systems, applications, network, devices, and other management

Back 34

Common Information Model (CIM)

Front 35

What is the ManagementEventWatcher class?

Back 35

Allows for subscription information about events that occur within WMI context

Front 36

What are Visualizers?

Back 36

Powerful new feature of Visual Studio 2005 that allow developers to see virtually every aspect of any object in debug time

Front 37

Retrieve the names of each pause service? Add name to myCollection.Add()

Back 37

ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM WIN£"_Service where State = 'Paused'");
foreach(ManagementObject svc in searcher.Get())
{
myCollection.Add(svc["DisplayName"]);
}

Front 38

Write code that transfers the first 70bytes from a stream variable stream1 into a new byte array named byteArray. assign the transfered bytes to an int var byesTransfered

Back 38

stream1.Read(byteArray, 0, 70);