• Lecture 3: Local Area Networks

    Lecture 3: Local Area Networks

    When computers are connected to a physical medium, there must be a way they can grab the attention of other computers to broadcast the message, "Here comes a frame!" Various technologies have different ways of doing this process, but all frames, regardless of technology, have a beginning signaling sequence of bytes. 10101010…….10101010 Depending up frame format: Preamble = 7 bytes, Start or Start of Frame Delimiter (SFD) = 1 byte 10101011.

     40 p cit 03/05/2013 72 2

  • IP Addresses: Classful Addressing

    IP Addresses: Classful Addressing

    The identifier used in the IP layer of the TCP/IP protocol suite to identify each device connected to the Internet is called the Internet address or IP address. An IP address is a 32-bit address that uniquely and universally defines the connection of a host or a router to the Internet. IP addresses are unique. They are unique in the sense that each address defines one, and only one, connection to the Internet. Two devices on the Internet can...

     120 p cit 03/05/2013 99 2

  • Microsoft Visual Basic .NET: Reloaded - Chapter 10: Structures and more controls

    Microsoft Visual Basic .NET: Reloaded - Chapter 10: Structures and more controls

    You can create your own data types using the Structure statement Referred to as “user-defined data types” or “structures” Structures contain “member variables” between Structure clause and End Structure clause Member variables are declared using Public keyword followed by the variable name and then the desired data type

     54 p cit 17/04/2013 92 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 11: Creating classes and objects

    Microsoft Visual Basic .NET: Reloaded - Chapter 11: Creating classes and objects

    Object-oriented programs are based on objects, which are instantiated from classes A class contains (encapsulates) the properties (attributes) that describe a person, place, or thing Examples: Student, School, Book An object is a specific instance of a class Examples: “You” are a student that goes to a specific school and are using this specific book VB has many built-in objects such as Textbox controls, Forms, and Labels

     44 p cit 17/04/2013 93 1

  • LECTURE I Overview of Configuration of Network Devices

    LECTURE I Overview of Configuration of Network Devices

    As with a computer, a router or switch cannot function without an operating system. Cisco calls its operating system the Cisco Internetwork Operating System or Cisco IOS. The Cisco IOS provides the following network services: Basic routing and switching functions Reliable and secure access to networked resources Network scalability

     31 p cit 03/05/2013 89 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 12: Using ADO.NET

    Microsoft Visual Basic .NET: Reloaded - Chapter 12: Using ADO.NET

    Database Organized collection of related information stored in a file on a disk Relational database stores information in tables composed of columns and rows Table is a group of related records Each row represents a record Each column represents a row Primary key is a field that uniquely identities a record in a table Foreign key is a field in one table used as the primary key in another table Tables are related by a common field or fields

     52 p cit 17/04/2013 96 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 13: Creating web applications using ASP.NET

    Microsoft Visual Basic .NET: Reloaded - Chapter 13: Creating web applications using ASP.NET

    Internet – world’s largest computer network WWW (World Wide Web) Contains documents called web pages Web pages are stored on Web Servers Web Server is a computer with software to serve up web pages in response to client requests (web browser)

     47 p cit 17/04/2013 94 1

  • Analysis and design of algorithms - chapter 8: Approximation Algorithms

    Analysis and design of algorithms - chapter 8: Approximation Algorithms

    Many problems of practical significance are NP-complete but are too important to abandon merely because obtaining an optimal solution is intractable. If a problem is NP-complete, we are unlikely to find a polynomial time algorithm for solving it exactly, but it may still be possible to find near-optimal solution in polynomial time. In practice, near-optimality is often good enough. An algorithm that returns near-optimal solutions is called...

     22 p cit 19/03/2013 106 1

  • Microsoft Visual Basic 2005 - Chapter 1: Introduction to Visual Basic 2005 Programming

    Microsoft Visual Basic 2005 - Chapter 1: Introduction to Visual Basic 2005 Programming

    The set of instructions that directs a computer to perform tasks is called computer software, or a computer program. Computer hardware is the physical equipment associated with a computer. The basic function of many computer programs is to: accept data, manipulate the data (process), and create output data or information.

     38 p cit 17/04/2013 79 1

  • Unit OS6: Device Management - 6.1. Principles of I/O Systems

    Unit OS6: Device Management - 6.1. Principles of I/O Systems

    These materials are part of the Windows Operating System Internals Curriculum Development Kit, developed by David A. Solomon and Mark E. Russinovich with Andreas Polze Microsoft has licensed these materials from David Solomon Expert Seminars, Inc. for distribution to academic organizations solely for use in academic environments (and not for commercial use)

     17 p cit 19/03/2013 104 1

  • Microsoft Visual Basic 2005 - Chapter 2: Program and Graphical

    Microsoft Visual Basic 2005 - Chapter 2: Program and Graphical

    Click the New Project button on the Standard toolbar If necessary, in the Project types pane (left pane), click Visual Basic so it is selected If necessary, click Windows Application in the Templates pane Double-click the text,WindowsApplication1, in the Name text box to select the text. Type the project name. For this example, you could type HotelRoomSelection as the name Click the OK button in the New Project window

     53 p cit 17/04/2013 67 1

  • Unit OS6: Device Management - 6.2. The Windows I/O System Components

    Unit OS6: Device Management - 6.2. The Windows I/O System Components

    These materials are part of the Windows Operating System Internals Curriculum Development Kit, developed by David A. Solomon and Mark E. Russinovich with Andreas Polze Microsoft has licensed these materials from David Solomon Expert Seminars, Inc. for distribution to academic organizations solely for use in academic environments (and not for commercial use)

     28 p cit 19/03/2013 90 1

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