IIS Interview Questions And Answers Part - 2
1. 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.
Note : Here web sites means the Root Node.
Where is the default location for IIS Log files ?
Its
C:\WINDOWS\system32\LogFiles\W3SVC1
2. What is ISAPI Filter ?
This is one of the more important question for experienced guys.
Please read this in details.
http://msdn.microsoft.com/en-us/library/ms524610.aspx
3. What 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.
4. 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.
5. 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. ClassicAppPool
6.What is name of default application pool in IIS ?
DefaultAppPool
7. What 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
8. Name of the tool which is used for remote debugging of IIS
NOTE: This is objective type question, Please click question title for correct answer.
9. 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.
10. What is the default Identity of an Application Pool ?
NetworkServices
11. 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.
12. 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.
13. Is there any alternative way to host site on IIS rather than opening IIS Manager ?
Yes, We can directly host any site from the physical location of directory itself.
Right Click on Physical Folder > Properties > Web Sharing
There you need to select > "Share This Folder" Option Button. Then it will ask for alias name and other setting. Then Click on OK.
To Validate : Run > Inetmgr > Check there should an virtual directory with the same "Alias" name that you have given.
If there are already one Virtual directory exist it will showing you the error message while you providing the "Alias" name.
14. 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,.
15. 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.
16. 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
17. 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 process works 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.
18. 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 .
19. 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
20. 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.
21. What is the latest version of IIS released with Windows 7
Posted by: Nishithraj
IIS 7.5
22. What is the default user name of an anonymous login in IIS?
Posted by: Peermohamedmydeen
In IIS, an anonymous user will be given with a user name of "IUSR_MachineName "
23. How can we take back-ups in IIS Server?
Posted by: Peermohamedmydeen
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.
24. What is IIS metabase? And In which format IIS stors configurations?
Posted by: Peermohamedmydeen
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?
Posted by: Peermohamedmydeen
Status Code Type of Code
100 Series - Informational
200 Series - Success
300 Series - Redirection
400 Series - Client Error
500 Series - Server Error
25. 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:
26. 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. !!!
27. Which DLL is used to translate XML to SQL in Internet Information Services (IIS) ?
NOTE: This is objective type question, Please click question title for correct answer.
28. What is the purpose of IIS application pools?
We use applicaiton pools for isolation purpose. Every application within an application pool used the same worker process. Each worker process operates as a separate instance of the worker process executable, W3wp.exe, the worker process that services one application pool is separated from the worker process that services another.
In simplest words we use applicaiton pools for ISOLATION purpose.
29. 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)
Details : http://techprudent.com/the-windows-process-activation-service/
and
MSDN : http://technet.microsoft.com/en-us/library/cc735229%28WS.10%29.aspx
30. 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.
31. 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
32. How will you call a Website from another computer connected in LAN?
In order to call a website from another computer in LAN.We will have to Host the Website in one Machines in the LAN and provide it a Static Private IP.
Once we are done with, we can treat it as a dummy server.
Once the website is hosted then we can call the website from the Private static IP of the machine in which the web app is hosted.
Eg :- if the web app is named as abc and the private IP is 192.168.1.2
then from another machine we can call the app as
http://192.168.1.2/abc
