Web Application Development (70-515)

Front 1

Default TCP port for HTTP traffic

Back 1

80

Front 2

Default TCP port for HTTPS traffic

Back 2

443

Front 3

What does HTTPS stand for?

Back 3

Hypertext Transfer Protocol, Secure

Front 4

What does SSL stand for?

Back 4

Secure Socket Layer

Front 5

Define the HTTP GET request method

Back 5

Gets an object, such as a web page, from the web server. Should not have side effects.

Front 6

URL

Back 6

Uniform Resource Locator

Front 7

URI

Back 7

Uniform Resource Identifier

Front 8

Define the HTTP HEAD request method

Back 8

Identical to a GET request but without a response body. Useful for retrieving metadata information.

Front 9

Define the HTTP POST request method

Back 9

Submits data to be processed. The data is included in the body of the request. This may result in the creation of a new resource or an update to an existing resource.

Front 10

Define the HTTP PUT request method.

Back 10

Similar to a POST request but intended for the creation of a resource.

Front 11

Define the HTTP DELETE request method

Back 11

Deletes the specified resource.

Front 12

Define the HTTP TRACE request method

Back 12

Echos a request so that a client can see what (if any) changes or additions have been made by intermediate servers.

Front 13

Define the HTTP OPTIONS request method

Back 13

A request to for a list of the HTTP methods that the server supports.

Front 14

Define the HTTP CONNECT request method

Back 14

A request to converts the request to a transparent TCP/IP tunnel through an unencrypted HTTP proxy. Usually to facilitate SSL-encrypted communication.

Front 15

Define the HTTP PATCH request method

Back 15

A request to make partial modifications to a resource.

Front 16

Define the HTTP DEBUG request method

Back 16

A request to starts ASP.net debugging. Informs VS of the process to which the debugger will attach.

Front 17

Describe the 1xx status code group

Back 17

Informational. The request was received and the server is continuing to process.

Front 18

Describe the 2xx status code group

Back 18

Success. The request was received, understood, accepted.

Front 19

Describe the 3xx status code group

Back 19

Redirect. The client must access a different resource instead.

Front 20

Describe the 4xx status code group

Back 20

Client Error. The request had a client error or the server does not know how to fulfill the request.

Front 21

Describe the 5xx status code group

Back 21

Server Error. The server understood the request but failed to fulfill it.

Front 22

Describe the Response Status Code 100

Back 22

Continue

Front 23

Describe the Response Status Code 200

Back 23

OK

Front 24

Describe the Response Status Code 201

Back 24

Created

Front 25

Describe the Response Status Code 300

Back 25

Redirection with Multiple Choices

Front 26

Describe the Response Status Code 301

Back 26

Moved Permanently

Front 27

Describe the Response Status Code 302

Back 27

Found... Moved temporarily. Client should continue to use URI.

Front 28

Describe the Response Status Code 400

Back 28

Bad Request

Front 29

Describe the Response Status Code 401

Back 29

Unauthorized

Front 30

Describe the Response Status Code 403

Back 30

Forbidden

Front 31

Describe the Response Status Code 404

Back 31

Not found

Front 32

Describe the Response Status Code 407

Back 32

Proxy Authentication Required

Front 33

Describe the Response Status Code 405

Back 33

Method not allowed

Front 34

Describe the Response Status Code 408

Back 34

Request time-out

Front 35

Describe the Response Status Code 413

Back 35

Request too long

Front 36

Describe the Response Status Code 500

Back 36

Internal server error

Front 37

Describe the Response Status Code 501

Back 37

Not implemented. Server does not recognize the request method and is not capable of supporting it for any resource. (Compare to 405 - method not allowed)

Front 38

What does MIME stand for?

Back 38

Multipurpose Internet Mail Extensions

Front 39

What is the Content-Type header for and what is it's format. Give an example.

Back 39

The Content-Type indicates the type of resource that is being sent to the web browser. It is in the form of a MIME type of two-parts, type/subtype.

Front 40

What is the App_Browsers folder for?

Back 40

The App_Browsers folder contains custom browser definition files (.browser files) that ASP.net uses to identify browsers and determine their capabilities. (see page 23)

Front 41

How do you put C# or VB code in the ASPX file?

Back 41

<%@ Page Language="VB|C#" %>

<script runat="server">
code here
</script>

Front 42

What is the markup called that is used to set up the environment and specify how the page should be processed?

Back 42

Page directives

Front 43

What are FrontPage Server Extensions?

Back 43

FrontPage Server Extensions allow MS FrontPage clients to communicate with web servers, and provide additional functionality intended for websites.

It has security problems. It relies on HTTP for communication and CGI/POST for server-side processing.

Most .NET products switched to WebDAV, but VS 2005 & 2008 still publishes ClickOnce applications to websites using these extensions.

Front 44

What is WebDAV?

Back 44

Web-based Distribute Authoring and Versioning.

Based on HTTP, the WebDAV protocol makes the web a read/write medium.

Front 45

List the ASP.net 4.0 configuration hierarchy in the order that they are processed by the ASP.net run-time.

Name the path for extra credit.

Back 45

%SystemRoot%\Microsoft .NET\Framework\<versionNumber>\CONFIG\Machine.config
%SystemRoot%\Microsoft .NET\Framework\<versionNumber>\CONFIG\Web.config
<wwwroot>\Web.config
<wwwroot>\<web_app>\Web.config
<wwwroot>\<web_app>\<dir>\Web.config

Front 46

Describe the execution life-cycle of an ASP.net MVC HTTP request.

Back 46

1. Receive request, look up Route object in RouteTable and create RouteData object.

2. Create RequestContext instance.

3. Create MvcHandler and pass RequestContext to handler.

4. Identify IControllerFactory from RequestContext.

5. Create instance of class that implements ControllerBase.

6. Call MyController.Execute method.

7. The ControllerActionInvoker determines which action to invoke on the controller and executes it, which results in calling the model and returning a view.

http://blog.codeville.net/2007/11/20/aspnet-mvc-pipeline-lifecycle/

Front 47

Name the class used to map an area with the routing engine.

Back 47

AreaRegistration class

Front 48

After DataAnnotations are applied to model classes, how do you check for and display validation errors in MVC?

Back 48

In the controller class's POST action, check the Model.IsValid property. If the model is not valid, return the view.

Add <%: Html.ValidationSummary(..) %> to the view to display the error.

Add <%: Html.ValidationMessageFor(...) %> near the field to display property errors.

Front 49

What parameter type is passed to an MVC action method during a form post?

Back 49

FormCollection

Front 50

What are two ways of passing data to MVC views?

Back 50

ViewDataDictionary and strongly typed views.

Front 51

Name a few predefined action filters

Back 51

AuthorizeAttribute, OutputCacheAttribute, HandleErrorAttribute

Front 52

How are action filters applied

Back 52

as attributes on actions or

Front 53

What do standard MVC views inherit from?

Back 53

ViewPage class

Front 54

What does the MVC ViewPage class inherit from?

Back 54

Page class (same as web form pages)

Front 55

What do standard MVC master views inherit from?

Back 55

MasterViewPage class

Front 56

What do standard MVC partial views inherit from?

Back 56

ViewUserControl class

Front 57

What does the MVC class MasterPageView inherit from?

Back 57

UserControl class (same as web form user controls)

Front 58

What does AJAX stand for?

Back 58

Asynchronous JavaScript and XML

Hint 58

Ajax is really a set of technologies working together:
* XHTML and CSS for markup
* DOM for dispaly & interaction
* XML and XSLT for data interchange & manipulation
* JSON for marshalling objects
* XMLHttpRequest for asynchronous communication
* JavaScript

Front 59

What does JSON stand for?

Back 59

JavaScript Object Notation

Front 60

What is a generic HTTP handler and how do you implement one?

Back 60

A generic handler is a code file with an ASHX extension that contains a class that implements IHttpHandler. It's the default HTTP handler for all web handlers that do not have a UI and that include the @WebHandler directive.

Hint 60

The default HTTP handler for all web handlers that do not have a UI and that include the @WebHandler directive.

Front 61

Name the four build-in HTTP handlers in ASP.net

Back 61

1. ASP.net page handler (*.aspx)
2. Web service handler (*.asmx)
3. Generic Web handler (*.ashx)
4. Trace handler (trace.axd)

Hint 61

Hint:
1. (*.aspx)
2. (*.asmx)
3. (*.ashx)
4. (trace.axd)

Front 62

What class/control manages script libraries, files, partial-page rendering, and client proxy class generation for Web and application services?

Back 62

System.Web.UI.ScriptManager

Hint 62

This class is in the System.Web.UI namespace

Front 63

In MVC, what is a route constraint and how do you implement your own?

Back 63

When you map a route in MVC, you have the option of specifying a constraint on that route so that only matching Urls will use. You can use regular expression, or provide a custom route constraint by implementing IRouteConstraint.

Front 64

By default, ASP.net will serve up files that exist. How can you by-pass this behavior and force all requests to be handled by ASP.net routing instead?

Back 64

Set RouteCollection.RouteExistingFiles = true.

By default, this property is false which allow ASP.net to serve up existing files.

Front 65

In an ASP.net MVC application, how do you explicitly bypass routing for certain requests?

Back 65

Call RoutingCollectionExtensions.IgnoreRoute("{route pattern}")

Front 66

In an MVC action method, list the 6 ways to return a redirect result to the client

Back 66

return Redirect("{url}") // RedirectResult
return RedirectPermanent("{url}") // RedirectResult

return RedirectToAction("{action}", "{contoller}") // RedirectToRouteResult
return RedirectToActionPermanent("{action}", "{contoller}") // RedirectToRouteResult

return RedirectToRoute("{route name}"); // RedirectToRouteResult
return RedirectToRoutePermanent("{route name}"); // RedirectToRouteResult

Front 67

How do you ensure that an MVC action can be called asynchronously?

Back 67

Have the controller derive from AsyncController and implement {ActionName}Async and {ActionName}Completed methods. Use the AsyncManager make the callback to the completed method. ***

Hint 67

http://msdn.microsoft.com/en-us/library/ee728598.aspx

Front 68

How do you specify a web pages master page in ASPX markup?

Back 68

<%@ Page MasterPageFile="~/MySite.master" %>

Front 69

How do you specify a master page for a site, application, or folder?

Back 69

Web.config
<pages MasterPageFile="~/MySite.master" />

Front 70

Which control is required when defining a master page?

Back 70

You must have at least one ContentPlaceHolder control defined when implementing a master page.

Front 71

Which control is used to define content when implementing a content page?

Back 71

Typically one Content control for each ContentPlaceHolder defined on the master page is used.

Front 72

Describe how to expose master page members to content pages.

Back 72

Coupling your master page to content pages is usually a bad idea. An alternative might be to expose a master page event to the content pages.

Hint 72

Add the @ MasterType declaration to the content pages. Then access the instance using the Master property of the content page.

<%@ MasterType VirtualPath="~\Site.master" %>

or

<%@ MasterType TypeName="SiteMaster" %>

Front 73

How does applying Theme settings behave differently from applying StyleSheetTheme settings?

Back 73

Settings are applied in the following order:

StyleSheetTheme > Page > Theme

Front 74

In what project folder are themes placed?

Back 74

App_Themes

Front 75

In what windows folder are global themes placed?

Back 75

<wwwroot>\aspnet_client\system_web\<version>\Themes

Front 76

Caching: Name and describe the two types of caching in ASP.net

Back 76

Application Caching (also called application data caching) is the process of storing data in a cache object. Page.Cache.Insert(...)

Page output caching is the process of storing a rendered page, portion of a page, or version of a page in memory.

Front 77

OutputCache: How do you apply a cache substitution?

Back 77

static string MethodName(HttpContext context)
{
return {substitution string};
}

<asp:Substitution runat="server" methodname="MethodName" />

Hint 77

It's important that the callback method name be static (although it doesn't appear to need to be public).

Front 78

When using a cache validation callback, what happens when you set the HttpValidationStatus parameter to Invalid?

Back 78

This causes the page to be generated. The newly generated page is stored in the cache, replacing an earlier cached version.

Front 79

When using a cache validation callback, what happens when you set the HttpValidationStatus parameter to IgnoreThisRequest?

Back 79

This causes the page to be generated WITHOUT invalidating the previously cached version of the page. The generated page output is NOT cached and future requests might receive the previously cached output.

Front 80

When using a cache validation callback, what happens when you set the HttpValidationStatus parameter to Valid?

Back 80

This causes ASP.net to return the cached version of the page.

Front 81

How do you control view state encryption for an entire ASP.net web site?

Back 81

<configuration>
<system.web>
<pages viewStateEncryptionMode = "Always | Auto | Never" />
</system.web>
</configuration>

Front 82

How do you control view state encryption for an ASP.net page?

Back 82

<%@ Page ... ViewStateEncryptionMode = "Always | Auto | Never" />

Front 83

What is ViewStateEncryptionMode.Auto?

Back 83

ViewStateEncryptionMode.Auto is the default encryption mode in ASP.net. It enables encryption to be controlled at the control by calling the RegisterRequiresViewStateEncryption method.

Front 84

How do you disable view state for an ASP.net page or control?

Back 84

Set EnableViewState = "False" OR set ViewStateMode = "Disabled"

Front 85

How do you disable view state for an entire page, except for specific controls?

Back 85

Set the pages ViewStateMode = "Disabled" and set the ViewStateMode of the controls to "Enabled". For this to work, EnableViewState must be set to true on the page and the controls.

Hint 85

You might do this to optimize page load time by reducing the size of the page.

Front 86

Describe the ClientIDMode property and enumeration.

Back 86

Gets or sets the algorithm that is used to generate the value of the ClientID property.

AutoID: ClientID is generated by concatenating the ID values of each parent container with the ID of the control. An incremental value (ctl00_) is inserted in front of the control's ID. Used in ASP.net prior to version 4.0.

Static: The ClientID is set to the ID property of the control.

Predictable: The ClientID is generated by concatenating the ClientID of the parent with the ID of the control. If the control is generated by a multi-row control (such as a grid) the ClientIDRowSuffix property is added at the end, or a sequential number is added at the end if ClientIDRowSuffix is blank.

Front 87

When working with ApplicationState, what must be done to avoid concurrency problems.

Back 87

Application.Lock()
Application.Unlock()

Front 88

Name two ways to access the Session state bag.

Back 88

Page.Session
HttpContext.Session

Front 89

How can you disable session state for an entire web application?

Back 89

<configuration>
<system.web>
<sessionState mode="off"/>
</system.web>
</configuration>

Front 90

How can you disable session state for a specific web page?

Back 90

<%@ Page EnableSessionState="False" %>

Front 91

Web Parts: How do you establish a static connection?

Back 91

1. Create a provider web part (UserControl). Create a public method that will return data to the Consumer. Decorate the method with the ConnectionProvider attribute.

2. Create a consumer web part. Create a public method that will receive data from the Provider. Decorate the method with the ConnectionConsumer attribute.

3. Create a web page with a WebPartManager control and at least one WebPartZone container.

4. Add the Provider and Consumer to the web part zone created above.

5. Add <StaticConnection> <asp:WebPartConnection> to WebPartManager and set the following attributes of the connection control:
ID
ProviderID - the provider ID of the control added in step 4
ProviderConnectionPointID - the name of the method that will provide data
ConsumerID - the consumer ID of the control added in step 4
ConsumerConnectionPointID - the name of the method that will consume data

Front 92

In which folder should global resources go in?

Back 92

App_GlobalResources

Front 93

In which folder should local resources go in?

Back 93

App_LocalResources