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Interview questions : ASP, ASP.NET

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Describe the difference between Interface-oriented, Object-oriented and Aspect-oriented programming. Describe what an Interface is and how it’s different from a Class. What is Reflection? What is the difference between XML Web Services using ASMX and .NET Remoting using SOAP? Are the type system represented by XmlSchema and the CLS isomorphic? Conceptually, what is the difference between early-binding and late-binding? Is using Assembly.Load a static reference or dynamic reference? When would using Assembly.LoadFrom or Assembly.LoadFile be appropriate? What is an Asssembly Qualified Name? Is it a filename? How is it different? Is this valid? Assembly.Load("foo.dll"); How is a strongly-named assembly different from one that isn’t strongly-named? Can DateTimes be null? What is the JIT? What is NGEN? What are limitations and benefits of each? How does the generational garbage collector in the .NET CLR manage object lifetime? What is non-deterministic finalization? What is the difference between Finalize() and Dispose()? How is the using() pattern useful? What is IDisposable? How does it support deterministic finalization? What does this useful command line do? tasklist /m "mscor*" What is the difference between in-proc and out-of-proc? What technology enables out-of-proc communication in .NET? When you’re running a component within ASP.NET, what process is it running within on Windows XP? Windows 2000? Windows 2003? Describe the difference between a Thread and a Process? What is a Windows Service and how does its lifecycle differ from a "standard" EXE? What is the maximum amount of memory any single process on Windows can address? Is this different than the maximum virtual memory for the system? How would this affect a system design? What is the difference between an EXE and a DLL? What is strong-typing versus weak-typing? Which is preferred? Why? Corillian's product is a "Component Container." Name at least 3 component containers that ship now with the Windows Server Family. What is a PID? How is it useful when troubleshooting a system? How many processes can listen on a single TCP/IP port? What is the GAC? What problem does it solve? Describe how a browser-based Form POST becomes a Server-Side event like Button1_OnClick. What is a PostBack? What is ViewState? How is it encoded? Is it encrypted? Who uses ViewState? What is the <machinekey> element and what two ASP.NET technologies is it used for? What three Session State providers are available in ASP.NET 1.1? What are the pros and cons of each? What is Web Gardening? How would using it affect a design? Given one ASP.NET application, how many application objects does it have on a single proc box? A dual? A dual with Web Gardening enabled? How would this affect a design? Are threads reused in ASP.NET between reqeusts? Does every HttpRequest get its own thread? Should you use Thread Local storage with ASP.NET? Is the [ThreadStatic] attribute useful in ASP.NET? Are there side effects? Good or bad? Give an example of how using an HttpHandler could simplify an existing design that serves Check Images from an .aspx page. What kinds of events can an HttpModule subscribe to? What influence can they have on an implementation? What can be done without recompiling the ASP.NET Application? Describe ways to present an arbitrary endpoint (URL) and route requests to that endpoint to ASP.NET. Explain how cookies work. Give an example of Cookie abuse. Explain the importance of HttpRequest.ValidateInput()? What kind of data is passed via HTTP Headers? Juxtapose the HTTP verbs GET and POST. What is HEAD? Name and describe at least a half dozen HTTP Status Codes and what they express to the requesting client. How does if-not-modified-since work? How can it be programmatically implemented with ASP.NET? Explain <@OutputCache%> and the usage of VaryByParam, VaryByHeader. How does VaryByCustom work?

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