• 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 132 2

  • 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 99 2

  • 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 122 1

  • Unit OS6: Device Management - 6.3. Windows I/O Processing

    Unit OS6: Device Management - 6.3. Windows I/O Processing

    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)

     46 p cit 19/03/2013 131 1

  • DC & CN II LECTURE 3 Local Area Networks

    DC & CN II LECTURE 3 Local Area Networks

    Preamble or Start Field 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...

     40 p cit 28/03/2013 105 1

  • DC & CN II LECTURE I Overview of Configuration of Network Devices

    DC & CN II 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 28/03/2013 118 1

  • Computer architecture - The Von Neumann Model

    Computer architecture - The Von Neumann Model

    Functional Units ALU = Arithmetic and Logic Unit could have many functional units. some of them special-purpose (multiply, square root, …) LC-3 performs ADD, AND, NOT Registers Small, temporary storage Operands and results of functional units LC-3 has eight registers (R0, …, R7), each 16 bits wide Word Size number of bits normally processed by ALU in one instruction also width of registers LC-3 is 16 bits

     19 p cit 28/03/2013 158 1

  • An Introduction to Visual Basic .NET

    An Introduction to Visual Basic .NET

    IDE Integrated Development Environment Contains all the features needed to create, run, and test programs Editor for entering program instructions Compiler for running and testing program Allows creation of Web-based and Windows-based applications Solution .sln Container for project and files for application Project .vbproj Container for storing files associated with a specific piece of the application Files Individual files necessary to...

     57 p cit 17/04/2013 117 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 2: Creating a User Interface

    Microsoft Visual Basic .NET: Reloaded - Chapter 2: Creating a User Interface

    What information, if any, does application need for display on the screen and/or print on the printer? Display on screen Customer’s name, street address, city, state Zip Code, number of each color skateboards ordered, total skateboards ordered, and total price of the order Print to printer nothing

     48 p cit 17/04/2013 138 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 3: Variables, constants, methods, and calculations

    Microsoft Visual Basic .NET: Reloaded - Chapter 3: Variables, constants, methods, and calculations

    Integers - whole numbers Integer, Long, Short Floating-point numbers - real numbers Single, Double – use exponential notation Example: 32000 = 3.2E4 Decimal - uses fixed decimal point Character Types Char – one character String – 0 to 2 billion characters

     64 p cit 17/04/2013 141 1

  • Visual Basic.NET - Chapter 4: Working with Variables, Constants, Data Types, and Expressions

    Visual Basic.NET - Chapter 4: Working with Variables, Constants, Data Types, and Expressions

    Start Visual Basic .NET and click the New Project button on the Start Page Click Create directory for Solution, and double-click the text, WindowsApplication1, in the Name box. Type Automobile Loan Calculator in the Name box Click the Browse button. If necessary, click 3½ Floppy (A:) in the Look in box, click Chapter4, and then click Open Click the OK button

     45 p cit 17/04/2013 144 1

  • Microsoft Visual Basic .NET: Reloaded - Chapter 4: Making decisions in a program

    Microsoft Visual Basic .NET: Reloaded - Chapter 4: Making decisions in a program

    Statement Block Set of instructions in “true” path (between keywords If and Then) Optional set of instructions in “false” path (between keywords Then and End If) Any items in square brackets are optional

     63 p cit 17/04/2013 105 1

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