Free Web and Mobile Development MCQs with Answers

• A. Smooth running of a program.
• B. Context-free Language.
• C. A programming language with self correcting codes.
• D. Synchronization between two communicating devices.

Explanation: Handshaking is the exchange of signals or messages used to establish communication and coordinate two devices.

• A. Physical
• B. Transport
• C. Datalink
• D. Application

Explanation: FTP provides commands and services for transferring files, so it operates at the OSI application layer.

• A. the layout of an individual web page
• B. the layout of the home page
• C. the layout of an index page
• D. the layout of a website Learn Coding Online

Explanation: A web blueprint, often called a site map or website plan, gives the overall structure and layout of a website.

• A. the communication channel
• B. the computer
• C. terminals
• D. All of the above Engineering & Technology

Explanation: Data-communication controls concern the complete communication setup, including the channel, computers, and terminals.

• A. Half duplex. , Duplex. , Singlex
• B. Half duplex. , Duplex. , Simplex
• C. Half duplex. , Duplex. , Half Singlex
• D. Singlex, duplex, half triplex

Explanation: The standard transmission modes are simplex, half-duplex, and full-duplex.

• A. Schemas can specify integer values
• B. Schemas are defined by XSD tag
• C. All XML documents must have a schema
• D. Schemas provide data oriented data types

Explanation: XML does not require a schema: a document can be well-formed without being validated against XSD.

• A. .java file
• B. .jsp file
• C. .class file
• D. None of above

Explanation: A JAR is a ZIP-based Java archive commonly used to package compiled .class files along with metadata and other resources.

• A. x++
• B. ++x
• C. x=x-1
• D. None of these

Explanation: As a standalone statement, x++ increments x by one, just as x = x + 1 does.

• A. java.awt
• B. javax.swing
• C. java.applet
• D. java.io

Explanation: drawString() is a method of Java's Graphics class, which belongs to the java.awt package.

• A. TRANSACTION_READ_UNCOMMITTED
• B. TRANSACTION_SERIALIZABLE
• C. Only A
• D. Both A and B

Explanation: Both TRANSACTION_READ_UNCOMMITTED and TRANSACTION_SERIALIZABLE are standard JDBC transaction isolation constants used in J2EE…

• A. JVM
• B. virtual machine
• C. applet engine
• D. None of above

Explanation: An applet engine is the software component that loads and runs a Java applet, typically using the JVM underneath.

• A. .class file
• B. .java file
• C. .java html
• D. .applet file

Explanation: A Java applet is compiled into a .class file, which the applet environment loads and executes.

• A. Web browser
• B. Java environment
• C. System software
• D. IDE

Explanation: HotJava was an early web browser developed to demonstrate Java applets and interactive web content.

• A. paint() method
• B. main() method
• C. run() method
• D. drawString() method

Explanation: An applet displays its drawing output through the `paint(Graphics)` method, which the applet framework calls when the applet needs to…

• A. Request.QueryString
• B. Response.writeln
• C. Response.write
• D. Request.Form

Explanation: In ASP.NET, values submitted through an HTTP POST form are retrieved with `Request.Form`.

• A. Output Caching
• B. DataCaching
• C. Both A and B
• D. None of these

Explanation: ASP.NET supports output caching for rendered responses and data caching for frequently used application data.

• A. Adds HTTP Headers to output stream
• B. Adds Tag to rendered Page
• C. Add Headers to the web site
• D. None of the above

Explanation: `Response.AddHeader` adds an HTTP header to the response sent to the client, such as a cache-control directive.

• A. Avoid page to be cached
• B. Clears the buffer area
• C. The session expires
• D. None of the Above

Explanation: These settings disable browser and proxy caching by setting an already-expired date, zero expiry, and a no-cache directive.

• A. Cross Page Posting
• B. Code-front
• C. Theme
• D. None of the above

Explanation: Cross-page posting lets a form submit normally to another ASP.NET page, where the target page can access the previous page's controls and…

• A. Visual Basic
• B. C#
• C. C++
• D. All of the above

Explanation: ASP.NET code-behind can be written in .NET languages such as Visual Basic and C#, and managed C++ can also target the .NET runtime.