Tag: web technology

Questions Related to web technology

To what value will the following expressions evaluate in the JavaScript console? NaN == NaN
technology web technology

  1. True

  2. False

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Correct Option: B

To what value will the following expressions evaluate in the JavaScript console? typeof 1/0
technology web technology

  1. Infinity

  2. NaN

  3. number

  4. null

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Correct Option: B

Can we override init(),service(),destroy()

technology web technology

  1. no

  2. yes but except service()

  3. yes except init()

  4. yes except destroy()

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Correct Option: B

Is servlet is an abstract class
technology web technology

  1. True

  2. False

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Correct Option: A

what is class available for http process in servlet

technology web technology

  1. GenericServlet

  2. service()

  3. doTrace()

  4. HttpServlet class its a sub class of GenericServlet class

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Correct Option: D

difference between Servlet and CGI
technology web technology

  1. no difference

  2. servlet runs slowly than CGI

  3. CGI is a complex process , servlet is easier ie lieght weight component

  4. none of these

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Correct Option: C

what are all the methods available in HttpServlet class
technology web technology

  1. service() only

  2. destroy()

  3. doPost,doGet

  4. doPost,doGet,doTrace(),doOption(),doDelete()

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Correct Option: C

Difference between doPost() and doGet()

technology web technology

  1. data size is limited(upto 256 datas) in doGet() , doPost has no limit for datas

  2. doPost() is secure than doGet

  3. both of above

  4. none of these

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Correct Option: C

Can we run serlvet class without web.xml file in server
technology web technology

  1. True

  2. False

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Correct Option: B

Difference between serveltContext and servletConfig interface
technology web technology

  1. both are same

  2. servletConfig helps for share information to all serlvet classes

  3. servletCofig for particular servlet configuration and servletContext toshare information to all serlvet classes

  4. none of these

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Correct Option: B