Computer Interview Questions and Answers
Question - 91 : - What is deployment ?
Answer - 91 : - The process whereby software is installed into an operational environment.
Question - 92 : - What is deployment descriptor ?
Answer - 92 : - An XML file provided with each module and J2EE application that describes how they should be deployed. The deployment descriptor directs a deployment tool to deploy a module or application with specific container options and describes specific configuration requirements that a deployer must resolve.
Question - 93 : - What is destination ?
Answer - 93 : - A JMS administered object that encapsulates the identity of a JMS queue or topic. See point-to-point messaging system, publish/subscribe messaging system.
Question - 94 : - What is digest authentication ?
Answer - 94 : - An authentication mechanism in which a Web application authenticates itself to a Web server by sending the server a message digest along with its HTTP request message. The digest is computed by employing a one-way hash algorithm to a concatenation of the HTTP request message and the client's password. The digest is typically much smaller than the HTTP request and doesn't contain the password.
Question - 95 : - What is distributed application ?
Answer - 95 : - An application made up of distinct components running in separate runtime environments, usually on different platforms connected via a network. Typical distributed applications are two-tier (client-server), three-tier (client-middleware-server), and multitier (client-multiple middleware-multiple servers).
Question - 96 : - What is document ?
Answer - 96 : - In general, an XML structure in which one or more elements contains text intermixed with subelements.
Question - 97 : - What is Document Object Model ?
Answer - 97 : - An API for accessing and manipulating XML documents as tree structures. DOM provides platform-neutral, language-neutral interfaces that enables programs and scripts to dynamically access and modify content and structure in XML documents.
Question - 98 : - What is document root ?
Answer - 98 : - The top-level directory of a WAR. The document root is where JSP pages, client-side classes and archives, and static Web resources are stored.
Question - 99 : - What is DTD ?
Answer - 99 : - Document type definition. An optional part of the XML document prolog, as specified by the XML standard. The DTD specifies constraints on the valid tags and tag sequences that can be in the document. The DTD has a number of shortcomings, however, and this has led to various schema proposals. For example, the DTD entry says that the XML element called username contains parsed character data-that is, text alone, with no other structural elements under it. The DTD includes both the local subset, defined in the current file, and the external subset, which consists of the definitions contained in external DTD files that are referenced in the local subset using a parameter entity.
Question - 100 : - Invention of mouse.
Answer - 100 : -
The computer mouse as we know it today was invented and developed by Douglas Englebart during the 60's and was patented on November 17, 1970. While creating the mouse Douglas was working at the Stanford Research Institute, a think tank sponsored by Stanford University and originally referred to the mouse as a "X-Y Position Indicator for a Display System." This mouse was first used with the Xerox Alto computer system in 1973. However, because of its lack of success the first widely used mouse is credited to being the mouse found on the Apple Lisa computer. Today, the mouse is now found and used on every computer.