What is the Role of Windows Activation Process in IIS ?
WAP is the Controller of Worker process under a Application Pool. Windows Activation Process which is managed by the worker process by starting, stopping and recycling the application pool. When to start, stop and Recycle should be defined on Application Pool Settings. Activation Process is also responsible for Health Monitor of Application Pool during runtime.
FYI : Health monitoring setting can be easily found in Properties of Application Pool.
What are the different type of application pool available in IIS 7.0 ?
IIS 7.0 having two types of application pool.
1. DefaultAppPool (Integrated)
2. ClassicAppPoolWhat are the worker process for IIS 5.1 and IIS 6.0 ?
For IIS 5.1 > aspnet_wp.exe
For IIS 6.0 > w3wp.exe
What is Web Farm ?
This is one of the most question in IIS. And along with that interviewer can as what is the different between Web farm and Web Garden ?
When we hosted our web Application on multiple web server under a load balancer call the Web Farm. This is generally used for heavy load web application where there are many user request at a time. So When Web Application is hosted on Different IIS Server over a load balancer, Load balancer is responsible for distribute the load on different server.
What is the default Identity of an Application Pool ?
NetworkServices
How can we set the default page for any web application ?
We can set the default page for a web site from the Virtual Directory Setting.
How To :
IIS Manager > Virtual Directory > Right Click > Properties > GoTo Document Tab.
How we can set the Idle Time out of an worker process ?
We can set the Idle time out for an worker process from Application Pool Properties.
In Performance Tab of Application pool, we can set the Idle Time out of the worker process. This means worker process will shut down after that given time period if it stay idle. And will again wake up again if a new request comes.
Can we create one Application Pool From Another Application Pool ?
Yes. We can.
While creating Application Application Pool From IIS, there should have two option available first one is for Default Setting and Another is for Existing Setting as template.
We can select the second one and from the drop down listed below we can select any on the Application Pool as Template,.
What are the main components of SVCHost.exe ?
Main components for SVCHost.exe are WWW Publishing Service (W3SVC) and Windows Activation Porcess (WAP) .
W3SVC is the mediator of HTTP.SYS and Windows Activation Process. Windows Activation Process maintain the worker processes.
What are the different way that we can hosted site on IIS ?
We can hosted site on IIS either creating Virtual Directory through IIS manager or Using Folder Web Sharing .
Apart from that Visual studio provide some inbuilt features to host the site on IIS like using Publishing the web site , Using Copy web Tool or Creating Virtual directory during the creating the project by choosing Location as HTTP
How does IIS process an ASP.net request ?
When client request for an aspx pages, request comes to kernel level off IIS means to HTTP.SYS . HTTP.SYS receives the request and based on the application pool name [ Which is already registred with the HTTP.SYS ] it send the request to worker process. Windows Activation processworks as mediator of them. w3wp.exe loads "aspnet_isapi.dll" files to start the HTTPRuntime . HTTPRuntime creates HTTPApplication objects and all request are passed through HTTPModule and finally reached to HttpHandler . This is the request pipeline. After end of Request pipeline ASP.NET Page lifecycle starts.
From where we can set the Session Time Out in IIS ?
We can set the Session time out settings from the Virtual Directory for that site.
Right Click on Virtual Directory > Properties > Click on "Configuration" Button
Goto the "Option" Tab. There in Enable Session State Section you can configure the Session Timeout .
What are the different "Execution Permission" available for IIS for an virtual directory ?
There are three Execution Permission available.
1. None
2. Scripts Only
3. Scripts and Executable
From where you can change the ASP.NET Version in IIS ?
This can be change from Virtual Directory properties. First open Properties of Virtual Directory > GoTo ASP.NET Version Tab.
There we can have change the ASP.NET Version.
What is the default user name of an anonymous login in IIS?
In IIS, an anonymous user will be given with a user name of "IUSR_MachineName "
How can we take back-ups in IIS Server?
Step 1 : In the IIS (inetmgr), right click on the "Computer" icon under "Internet Information Services" . Click "All Tasks" and select "Backup/Restore Configuration".
Step 2 : Click on button "Create backup". Give Name for your backup file. If you want encryption enable encryption option and give UserName and Password and then click OK.
What is IIS metabase? And In which format IIS stors configurations?
IIS metabase is a special databse which is used to maintain the settings and configurations data for IIS. In simple term, it is a configuration base for IIS (Metabase.xml).
IIS 5.0 --> Metabse is in Binary.
IIS 6.0 & 7.5 --> Metabase is in XML.
List of Error & Status codes in IIS 6.0?
Status Code Type of Code
100 Series - Informational
200 Series - Success
300 Series - Redirection
400 Series - Client Error
500 Series - Server Error
How to recycle application pool from the command prompt in IIS7?
1. Use appcmd.exe to recycle the application pool from the command prompt.
2. appcmd.exe is the command line tool for IIS7, you will find this tool at following location :
%systemroot%\system32\inetsrv\appcmd
3. To recycle your application pool use the following command:
appcmd recycle apppool /apppool.name:<application pool name>
What are the Different steps to be followed to get SSL(Secure Sockets Layer) for our Web Application ?
. Intially we have to Generate a certificate request from our IIS
. Now we have to request a certificate from the certificate authority(CA)
. This CA is an entity which issues Digital Certificates.
. After receiving the certificate we have to install that particular certificate on our Web Server using IIS
. We have to use Secure Hyper Text Transfer Protocol(HTTPS) when accessing secure pages in our application.
By this way we could make our web page as SSL protected. !!!
Which DLL is used to translate XML to SQL in Internet Information Services (IIS) ?
What is the purpose of IIS application pools?
In simplest words we use applicaiton pools for ISOLATION purpose.
what is Windows Process Activation Service ?
The Windows Process Activation Service (WAS) provides process activation, resource management and health management services for message-activated applications. It manages application pool configuration and the creation and lifetime of worker processes for HTTP and other protocols (net.tcp,net.pipe,net.msmq)
How can we check whether IIS is being installed in my system or not?
To verify if IIS is installed or not we need to go to ’Add or Remove Programs’ utility in the Control panel and click on the ’Add/Remove Windows Components’ in the side menu.
There we must locate an item called "Internet Information Services (IIS)". If this is checked, IIS should be installed.
So that you can have your IIS installed in your system if it is not installed.What are the permission settings are available for Virtual Directory ?
Below are the list of permission that can be set during virtaul directory creation
1. Read
2. Run Scripts
3. Execute:
4. Write:
5. Browse
What is the use of Enable Pinging Properties for Application Pool ?
IIS should periodically monitor the health of a worker process
[ Idle or not , Time for recycle or not, All Worker process are running properly or not ] .
Pining means, Activation Process monitor Worker process performance, health, idle time etc.
By default it sets to 30s .
Does One Web Application can have multiple Application Pool ?
No. Every Web Application should have one Application Pool. Bydefault it is "DefaultAppPool ".
How we can save an Application Pool Settings?
Application Pool Settings can be save as "XML" Format.
Right Click on Application Pool > All Task > Save Configuration to a File .
This will save all the settings of Application Pool as an XML file.We can make It
password protected also.
Which Tool is used for Remote IIS Debugging ?
Tools is : msvsmon.exe
This is located at : Install path\Microsoft Visual Studio 8\Common7\IDE\Remote Debugger\x86
What are the different authentication mode available for IIS Remote Debugging ?
For IIS Remote Debugging msvsmon supported two authentication mode
1. Windows Authentication
2. No-Authentication How can we get the list of worker process running in IIS along with the Application pool name ?
By running iisapp.vbs script from command Prompt.
Below are the steps :
1. Start > Run > Cmd
2. Go To Windows > System32
3. Run cscript iisapp.vbs
If there are multiple worker process running on IIS, then how can you attach a particular worker
process for application ?
Well, If there are multiple worker process running in IIS, it means I have to know the name of my application pool. Then I can run cscript iisapi.vbs script to find out the process ID and
Application Pool name Based on the process Id for particular application.
I have to attache the process from Visual studio IDE.
Why do we need to IIS Remote Debugging ?
There are following reasons where we can use remote debugging
1. Your development server does not have IIS installed.
2. Development server and Build/Released/Hosting Server is different
3. Multiple user want to debug simultaneously.Does IIS allows multiple user to Remote debug simultaneously ?
Yes. This is one of the great features of msvsmon.exe . Each instance of the remote
debugger has a unique server name.we can give an instance of the remote debugger
any server name. Now multiple user can able to access the server instance.
What is the use of aspnet_regiis -i command ?
This is used automatically register the .NET Framework with your IIS.
Can we have multiple web sites on IIS ?
Yes. IIS Can have multiple web sites and Each and every web sites can have multiple virtual Directory.
Where is the default location for IIS Log files ?
Its
C:\WINDOWS\system32\LogFiles\W3SVC1What are the major innovation in IIS 7.0 ?
Below are the Major Innovation in IIS 7.0
Components are designed as module and there are major change in administration settings.
FYI : You can find out many of them, just go thorugh Microsoft IIS web site.
What is the Role of Windows Activation Process in IIS ?
WAP is the Controller of Worker process under a Application Pool. Windows Activation Process which is managed by the worker process by starting, stopping and recycling the application pool. When to start, stop and Recycle should be defined on Application Pool Settings. Activation Process is also responsible for Health Monitor of Application Pool during runtime.
FYI : Health monitoring setting can be easily found in Properties of Application Pool. How can we set the default page for any web application ?
We can set the default page for a web site from the Virtual Directory Setting.
How To :
IIS Manager > Virtual Directory > Right Click > Properties > GoTo Document Tab. How we can set the Idle Time out of an worker process ?
We can set the Idle time out for an worker process from Application Pool Properties.
In Performance Tab of Application pool, we can set the Idle Time out of the worker process.
This means worker process will shut down after that given time period if it stay idle.
And will again wake up again if a new request comes.what is Windows Process Activation Service ?
The Windows Process Activation Service (WAS) provides process activation, resource management and health management services for message-activated applications. It manages application pool configuration and the creation and lifetime of worker processes for HTTP and other protocols (net.tcp,net.pipe,net.msmq)
What are the Different Authentication Methods(Using Windows Authentication) which are provided by IIS ?
Generally IIS provides four different kinds of Authentication Methods they are :
Anonymous Method
If we select this authentication, IIS doesn't perform any authentication so that any one can access the application.
Basic Method
If we select this method, the user who access the application should provide windows username and password to access the application. Although this is sent through a network by transmitting direct text so it it very insecure.
Digest Method
This method is almost equal to Basic method but the difference is the password is hashed before it is transmitted through out a network.
Windows Integrated Method
In this the application uses the Kerberos protocol to validate(Authenticate) the user. This uses a Secret key cryptography which provides strign authentication for Client/Server applications. How can we check whether IIS is being installed in my system or not?
To verify if IIS is installed or not we need to go to ’Add or Remove Programs’ utility in the Control panel and click on the ’Add/Remove Windows Components’ in the side menu.
There we must locate an item called "Internet Information Services (IIS)". If this is checked, IIS should be installed.
So that you can have your IIS installed in your system if it is not installed
What is the Name of Default Application Pool in IIS ?
Though we can create new application pool IIS with different settings, but IIS having
its own default application pool named :DefaultAppPool What are the different types of Identity available in IIS 6.0 ?
IIS having three different Identity.
1. Local System
2. Local Services
3. NetworkServices Name of default Identity of IIS6.0
Default Identity of IIS 6.0 is NetworkServices .
Which is having very minimum rights on your system. The user can only have the read access of the site. What is Recycling of Application Pool ?
ecycling Application pool means recycle the Worker process (w3wp.exe ) and the
memory used for the web application.
There are two types of recycling related with Application pool
1. Recycling Worker Process - Predefined Settings
2. Recycling Worker Process - Based on Memory What are the main layers of IIS Architecture ?
IIS having mainly two layer Kernel Mode and User Mode
Below are the subsection of both of them.
1. Kernel Mode
o HTTP.SYS
2. User Mode
o Web Admin Service
o Virtual Directory
o Application Pool What is the Role of Http.Sys in IIS ?
HTTP.SYS is the kernel level components of IIS. All client request comes from client
hit the HTTP.Sys of Kernel level. HTTP.SYS then makes a queue for each and every request
for each and individual application pool based on the request.
Whenever we create any application pool IIS automatically registers the pool
with HTTP.SYS to identify the particular during request processing. What are the different security settings available in IIS ?
Below are the commonly used IIS Security settings
1 Anonymous
2 Integrated Windows Authentication
3. Basic Authentication
4. Digest Authentication
5. Passport Authentication
For Set security permission you need to
go to Virtul Directory > Right Click > Properties > Directory Security
Click on Edit Button . What is the default authentication settings for IIS ?
Anonymous authentication is the default authentication mode for any site that is hosted on IIS,
and it runs under the"IUSR_[ServerName]" account.
What is web garden ?
By default Each Application Pool runs with a Single Worker Process (W3Wp.exe).
We can assign multiple Worker Process With a Single Application Pool.
An Application Poll with multiple Worker process called Web Gardens. Each Worker Process Should have there own Thread and Own Memory space.
Generally its not recommended to use InProc Session mode while we are using Web Garden. Where session data stores in case of "In-Proc" Session mode ?
Session data store inside process memory of worker process [ w3wp.exe ] .
How we can create an web garden ?
For creating web graden we need to go to Application Pool,
then Right Click on Application Pool > Properties > Goto Performance Tab
In Web Garden Section, increase the number of worker process. By default it is 1. How we can debug a web application which is hosted on IIS ?
We can easily debug any web application that are hosted on IIS by using Attaching of Worker
Process.
From Visual Studio IDE > Tools > Attach To Process
Select the particular Process, then start debugging.
WAP is the Controller of Worker process under a Application Pool. Windows Activation Process which is managed by the worker process by starting, stopping and recycling the application pool. When to start, stop and Recycle should be defined on Application Pool Settings. Activation Process is also responsible for Health Monitor of Application Pool during runtime.
FYI : Health monitoring setting can be easily found in Properties of Application Pool.
What are the different type of application pool available in IIS 7.0 ?
IIS 7.0 having two types of application pool.
1. DefaultAppPool (Integrated)
2. ClassicAppPoolWhat are the worker process for IIS 5.1 and IIS 6.0 ?
For IIS 5.1 > aspnet_wp.exe
For IIS 6.0 > w3wp.exe
What is Web Farm ?
This is one of the most question in IIS. And along with that interviewer can as what is the different between Web farm and Web Garden ?
When we hosted our web Application on multiple web server under a load balancer call the Web Farm. This is generally used for heavy load web application where there are many user request at a time. So When Web Application is hosted on Different IIS Server over a load balancer, Load balancer is responsible for distribute the load on different server.
What is the default Identity of an Application Pool ?
NetworkServices
How can we set the default page for any web application ?
We can set the default page for a web site from the Virtual Directory Setting.
How To :
IIS Manager > Virtual Directory > Right Click > Properties > GoTo Document Tab.
How we can set the Idle Time out of an worker process ?
We can set the Idle time out for an worker process from Application Pool Properties.
In Performance Tab of Application pool, we can set the Idle Time out of the worker process. This means worker process will shut down after that given time period if it stay idle. And will again wake up again if a new request comes.
Can we create one Application Pool From Another Application Pool ?
Yes. We can.
While creating Application Application Pool From IIS, there should have two option available first one is for Default Setting and Another is for Existing Setting as template.
We can select the second one and from the drop down listed below we can select any on the Application Pool as Template,.
What are the main components of SVCHost.exe ?
Main components for SVCHost.exe are WWW Publishing Service (W3SVC) and Windows Activation Porcess (WAP) .
W3SVC is the mediator of HTTP.SYS and Windows Activation Process. Windows Activation Process maintain the worker processes.
What are the different way that we can hosted site on IIS ?
We can hosted site on IIS either creating Virtual Directory through IIS manager or Using Folder Web Sharing .
Apart from that Visual studio provide some inbuilt features to host the site on IIS like using Publishing the web site , Using Copy web Tool or Creating Virtual directory during the creating the project by choosing Location as HTTP
How does IIS process an ASP.net request ?
When client request for an aspx pages, request comes to kernel level off IIS means to HTTP.SYS . HTTP.SYS receives the request and based on the application pool name [ Which is already registred with the HTTP.SYS ] it send the request to worker process. Windows Activation processworks as mediator of them. w3wp.exe loads "aspnet_isapi.dll" files to start the HTTPRuntime . HTTPRuntime creates HTTPApplication objects and all request are passed through HTTPModule and finally reached to HttpHandler . This is the request pipeline. After end of Request pipeline ASP.NET Page lifecycle starts.
From where we can set the Session Time Out in IIS ?
We can set the Session time out settings from the Virtual Directory for that site.
Right Click on Virtual Directory > Properties > Click on "Configuration" Button
Goto the "Option" Tab. There in Enable Session State Section you can configure the Session Timeout .
What are the different "Execution Permission" available for IIS for an virtual directory ?
There are three Execution Permission available.
1. None
2. Scripts Only
3. Scripts and Executable
From where you can change the ASP.NET Version in IIS ?
This can be change from Virtual Directory properties. First open Properties of Virtual Directory > GoTo ASP.NET Version Tab.
There we can have change the ASP.NET Version.
What is the default user name of an anonymous login in IIS?
In IIS, an anonymous user will be given with a user name of "IUSR_MachineName "
How can we take back-ups in IIS Server?
Step 1 : In the IIS (inetmgr), right click on the "Computer" icon under "Internet Information Services" . Click "All Tasks" and select "Backup/Restore Configuration".
Step 2 : Click on button "Create backup". Give Name for your backup file. If you want encryption enable encryption option and give UserName and Password and then click OK.
What is IIS metabase? And In which format IIS stors configurations?
IIS metabase is a special databse which is used to maintain the settings and configurations data for IIS. In simple term, it is a configuration base for IIS (Metabase.xml).
IIS 5.0 --> Metabse is in Binary.
IIS 6.0 & 7.5 --> Metabase is in XML.
List of Error & Status codes in IIS 6.0?
Status Code Type of Code
100 Series - Informational
200 Series - Success
300 Series - Redirection
400 Series - Client Error
500 Series - Server Error
How to recycle application pool from the command prompt in IIS7?
1. Use appcmd.exe to recycle the application pool from the command prompt.
2. appcmd.exe is the command line tool for IIS7, you will find this tool at following location :
%systemroot%\system32\inetsrv\appcmd
3. To recycle your application pool use the following command:
appcmd recycle apppool /apppool.name:<application pool name>
What are the Different steps to be followed to get SSL(Secure Sockets Layer) for our Web Application ?
. Intially we have to Generate a certificate request from our IIS
. Now we have to request a certificate from the certificate authority(CA)
. This CA is an entity which issues Digital Certificates.
. After receiving the certificate we have to install that particular certificate on our Web Server using IIS
. We have to use Secure Hyper Text Transfer Protocol(HTTPS) when accessing secure pages in our application.
By this way we could make our web page as SSL protected. !!!
Which DLL is used to translate XML to SQL in Internet Information Services (IIS) ?
What is the purpose of IIS application pools?
In simplest words we use applicaiton pools for ISOLATION purpose.
what is Windows Process Activation Service ?
The Windows Process Activation Service (WAS) provides process activation, resource management and health management services for message-activated applications. It manages application pool configuration and the creation and lifetime of worker processes for HTTP and other protocols (net.tcp,net.pipe,net.msmq)
How can we check whether IIS is being installed in my system or not?
To verify if IIS is installed or not we need to go to ’Add or Remove Programs’ utility in the Control panel and click on the ’Add/Remove Windows Components’ in the side menu.
There we must locate an item called "Internet Information Services (IIS)". If this is checked, IIS should be installed.
So that you can have your IIS installed in your system if it is not installed.What are the permission settings are available for Virtual Directory ?
Below are the list of permission that can be set during virtaul directory creation
1. Read
2. Run Scripts
3. Execute:
4. Write:
5. Browse
What is the use of Enable Pinging Properties for Application Pool ?
IIS should periodically monitor the health of a worker process
[ Idle or not , Time for recycle or not, All Worker process are running properly or not ] .
Pining means, Activation Process monitor Worker process performance, health, idle time etc.
By default it sets to 30s .
Does One Web Application can have multiple Application Pool ?
No. Every Web Application should have one Application Pool. Bydefault it is "DefaultAppPool ".
How we can save an Application Pool Settings?
Application Pool Settings can be save as "XML" Format.
Right Click on Application Pool > All Task > Save Configuration to a File .
This will save all the settings of Application Pool as an XML file.We can make It
password protected also.
Which Tool is used for Remote IIS Debugging ?
Tools is : msvsmon.exe
This is located at : Install path\Microsoft Visual Studio 8\Common7\IDE\Remote Debugger\x86
What are the different authentication mode available for IIS Remote Debugging ?
For IIS Remote Debugging msvsmon supported two authentication mode
1. Windows Authentication
2. No-Authentication How can we get the list of worker process running in IIS along with the Application pool name ?
By running iisapp.vbs script from command Prompt.
Below are the steps :
1. Start > Run > Cmd
2. Go To Windows > System32
3. Run cscript iisapp.vbs
If there are multiple worker process running on IIS, then how can you attach a particular worker
process for application ?
Well, If there are multiple worker process running in IIS, it means I have to know the name of my application pool. Then I can run cscript iisapi.vbs script to find out the process ID and
Application Pool name Based on the process Id for particular application.
I have to attache the process from Visual studio IDE.
Why do we need to IIS Remote Debugging ?
There are following reasons where we can use remote debugging
1. Your development server does not have IIS installed.
2. Development server and Build/Released/Hosting Server is different
3. Multiple user want to debug simultaneously.Does IIS allows multiple user to Remote debug simultaneously ?
Yes. This is one of the great features of msvsmon.exe . Each instance of the remote
debugger has a unique server name.we can give an instance of the remote debugger
any server name. Now multiple user can able to access the server instance.
What is the use of aspnet_regiis -i command ?
This is used automatically register the .NET Framework with your IIS.
Can we have multiple web sites on IIS ?
Yes. IIS Can have multiple web sites and Each and every web sites can have multiple virtual Directory.
Where is the default location for IIS Log files ?
Its
C:\WINDOWS\system32\LogFiles\W3SVC1What are the major innovation in IIS 7.0 ?
Below are the Major Innovation in IIS 7.0
Components are designed as module and there are major change in administration settings.
FYI : You can find out many of them, just go thorugh Microsoft IIS web site.
What is the Role of Windows Activation Process in IIS ?
WAP is the Controller of Worker process under a Application Pool. Windows Activation Process which is managed by the worker process by starting, stopping and recycling the application pool. When to start, stop and Recycle should be defined on Application Pool Settings. Activation Process is also responsible for Health Monitor of Application Pool during runtime.
FYI : Health monitoring setting can be easily found in Properties of Application Pool. How can we set the default page for any web application ?
We can set the default page for a web site from the Virtual Directory Setting.
How To :
IIS Manager > Virtual Directory > Right Click > Properties > GoTo Document Tab. How we can set the Idle Time out of an worker process ?
We can set the Idle time out for an worker process from Application Pool Properties.
In Performance Tab of Application pool, we can set the Idle Time out of the worker process.
This means worker process will shut down after that given time period if it stay idle.
And will again wake up again if a new request comes.what is Windows Process Activation Service ?
The Windows Process Activation Service (WAS) provides process activation, resource management and health management services for message-activated applications. It manages application pool configuration and the creation and lifetime of worker processes for HTTP and other protocols (net.tcp,net.pipe,net.msmq)
What are the Different Authentication Methods(Using Windows Authentication) which are provided by IIS ?
Generally IIS provides four different kinds of Authentication Methods they are :
Anonymous Method
If we select this authentication, IIS doesn't perform any authentication so that any one can access the application.
Basic Method
If we select this method, the user who access the application should provide windows username and password to access the application. Although this is sent through a network by transmitting direct text so it it very insecure.
Digest Method
This method is almost equal to Basic method but the difference is the password is hashed before it is transmitted through out a network.
Windows Integrated Method
In this the application uses the Kerberos protocol to validate(Authenticate) the user. This uses a Secret key cryptography which provides strign authentication for Client/Server applications. How can we check whether IIS is being installed in my system or not?
To verify if IIS is installed or not we need to go to ’Add or Remove Programs’ utility in the Control panel and click on the ’Add/Remove Windows Components’ in the side menu.
There we must locate an item called "Internet Information Services (IIS)". If this is checked, IIS should be installed.
So that you can have your IIS installed in your system if it is not installed
What is the Name of Default Application Pool in IIS ?
Though we can create new application pool IIS with different settings, but IIS having
its own default application pool named :DefaultAppPool What are the different types of Identity available in IIS 6.0 ?
IIS having three different Identity.
1. Local System
2. Local Services
3. NetworkServices Name of default Identity of IIS6.0
Default Identity of IIS 6.0 is NetworkServices .
Which is having very minimum rights on your system. The user can only have the read access of the site. What is Recycling of Application Pool ?
ecycling Application pool means recycle the Worker process (w3wp.exe ) and the
memory used for the web application.
There are two types of recycling related with Application pool
1. Recycling Worker Process - Predefined Settings
2. Recycling Worker Process - Based on Memory What are the main layers of IIS Architecture ?
IIS having mainly two layer Kernel Mode and User Mode
Below are the subsection of both of them.
1. Kernel Mode
o HTTP.SYS
2. User Mode
o Web Admin Service
o Virtual Directory
o Application Pool What is the Role of Http.Sys in IIS ?
HTTP.SYS is the kernel level components of IIS. All client request comes from client
hit the HTTP.Sys of Kernel level. HTTP.SYS then makes a queue for each and every request
for each and individual application pool based on the request.
Whenever we create any application pool IIS automatically registers the pool
with HTTP.SYS to identify the particular during request processing. What are the different security settings available in IIS ?
Below are the commonly used IIS Security settings
1 Anonymous
2 Integrated Windows Authentication
3. Basic Authentication
4. Digest Authentication
5. Passport Authentication
For Set security permission you need to
go to Virtul Directory > Right Click > Properties > Directory Security
Click on Edit Button . What is the default authentication settings for IIS ?
Anonymous authentication is the default authentication mode for any site that is hosted on IIS,
and it runs under the"IUSR_[ServerName]" account.
What is web garden ?
By default Each Application Pool runs with a Single Worker Process (W3Wp.exe).
We can assign multiple Worker Process With a Single Application Pool.
An Application Poll with multiple Worker process called Web Gardens. Each Worker Process Should have there own Thread and Own Memory space.
Generally its not recommended to use InProc Session mode while we are using Web Garden. Where session data stores in case of "In-Proc" Session mode ?
Session data store inside process memory of worker process [ w3wp.exe ] .
How we can create an web garden ?
For creating web graden we need to go to Application Pool,
then Right Click on Application Pool > Properties > Goto Performance Tab
In Web Garden Section, increase the number of worker process. By default it is 1. How we can debug a web application which is hosted on IIS ?
We can easily debug any web application that are hosted on IIS by using Attaching of Worker
Process.
From Visual Studio IDE > Tools > Attach To Process
Select the particular Process, then start debugging.