What Great .NET Developers Ought To Know

[alok pandey]

Everyone who writes code

* 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?

Mid-Level .NET Developer

* 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?

Senior Developers/Architects

* What’s wrong with a line like this? DateTime.Parse(myString);
* What are PDBs? Where must they be located for debugging to work?
* What is cyclomatic complexity and why is it important?
* Write a standard lock() plus “double check” to create a critical
section around a variable access.
* What is FullTrust? Do GAC’ed assemblies have FullTrust?
* What benefit does your code receive if you decorate it with
attributes demanding specific Security permissions?
* What does this do? gacutil /l | find /i "Corillian"
* What does this do? sn -t foo.dll
* What ports must be open for DCOM over a firewall? What is the
purpose of Port 135?
* Contrast OOP and SOA. What are tenets of each?
* How does the XmlSerializer work? What ACL permissions does a
process using it require?
* Why is catch(Exception) almost always a bad idea?
* What is the difference between Debug.Write and Trace.Write? When
should each be used?
* What is the difference between a Debug and Release build? Is
there a significant speed difference? Why or why not?
* Does JITting occur per-assembly or per-method? How does this
affect the working set?
* Contrast the use of an abstract base class against an interface?
* What is the difference between a.Equals(b) and a == b?
* In the context of a comparison, what is object identity versus
object equivalence?
* How would one do a deep copy in .NET?
* Explain current thinking around IClonable.
* What is boxing?
* Is string a value type or a reference type?
* What is the significance of the "PropertySpecified" pattern used
by the XmlSerializer? What problem does it attempt to solve?
* Why are out parameters a bad idea in .NET? Are they?
* Can attributes be placed on specific parameters to a method? Why
is this useful?

C# Component Developers

* Juxtapose the use of override with new. What is shadowing?
* Explain the use of virtual, sealed, override, and abstract.
* Explain the importance and use of each component of this string:
Foo.Bar, Version=2.0.205.0, Culture=neutral,
PublicKeyToken=593777ae2d274679d
* Explain the differences between public, protected, private and
internal.
* What benefit do you get from using a Primary Interop Assembly
(PIA)?
* By what mechanism does NUnit know what methods to test?
* What is the difference between: catch(Exception e){throw e;} and
catch(Exception e){throw;}
* What is the difference between typeof(foo) and myFoo.GetType()?
* Explain what’s happening in the first constructor: public class
c{ public c(string a) : this() {;}; public c() {;} } How is this
construct useful?
* What is this? Can this be used within a static method?

ASP.NET (UI) Developers

* 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?
* How would one implement ASP.NET HTML output caching, caching
outgoing versions of pages generated via all values of q= except where
q=5 (as in http://localhost/page.aspx?q=5)?

Developers using XML

* What is the purpose of XML Namespaces?
* When is the DOM appropriate for use? When is it not? Are there
size limitations?
* What is the WS-I Basic Profile and why is it important?
* Write a small XML document that uses a default namespace and a
qualified (prefixed) namespace. Include elements from both namespace.
* What is the one fundamental difference between Elements and
Attributes?
* What is the difference between Well-Formed XML and Valid XML?
* How would you validate XML using .NET?
* Why is this almost always a bad idea? When is it a good idea?
myXmlDocument.SelectNodes("//mynode");
* Describe the difference between pull-style parsers (XmlReader)
and eventing-readers (Sax)
* What is the difference between XPathDocument and XmlDocument?
Describe situations where one should be used over the other.
* What is the difference between an XML "Fragment" and an XML
"Document."
* What does it meant to say “the canonical” form of XML?
* Why is the XML InfoSet specification different from the Xml DOM?
What does the InfoSet attempt to solve?
* Contrast DTDs versus XSDs. What are their similarities and
differences? Which is preferred and why?
* Does System.Xml support DTDs? How?
* Can any XML Schema be represented as an object graph? Vice versa?

[sainyam chandra]

thanku sir....nice set of questions :)

--
Best Regards,
Sainyam Chandra
+91-9717568923