03 Physical Layer - Topologies and Cables

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    Physical Layer

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    Physical Layer

    Network Topologies

    Point to Point and Mesh

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    Physical Layer

    Network Topologies

    Multi Access Networks

    BUS

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    Physical Layer

    Network Topologies

    Multi Access Networks

    BUS

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    Physical Layer

    Network Topologies

    Multi Access Networks

    RING

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    Physical Layer

    Network Topologies

    Multi Access Networks

    STAR

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    Physical Layer

    Network Topologies

    Multi Access Networks

    STAR

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    Physical Layer

    Network Topologies

    Multi Access Networks

    STAR

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    Physical Layer

    Network Topologies

    Multi Access Networks

    RING

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Twisted pair

    UTP (Unshielded twisted pair)

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    Physical Layer

    Network Cables

    Twisted pair

    UTP (Unshielded twisted pair)

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Twisted pair

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    Physical Layer

    Network Cables

    Fiber Optic

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    Physical Layer

    Network Cables

    Fiber Optic

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    Physical Layer

    Network Cables

    Fiber Optic

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    Physical Layer

    NIC (Network Interface Card)

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    Physical Layer

    NIC (Network Interface Card)

    What is the term Half Duplex & Full Duplex?

    A half-duplex(HDX) system provides communication in bothdirections, but only one direction at a time (not simultaneously).

    A full-duplex(FDX), or sometimes double-duplexsystem, allows

    communication in both directions, and, unlike half-duplex, allowsthis to happen simultaneously.

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    Physical Layer

    NIC (Network Interface Card)

    MAC address

    The standard format for printing MAC addresses is 48-bits.

    human-friendly form is six groups of two hexadecimal digits,

    separated by hyphens (-) or colons (:).

    Examples

    01-23-45-67-89-ab

    01:23:45:67:89:ab

    This 48-bit address space contains potentially 248 or281,474,976,710,656 possible MAC addresses.

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    Physical Layer

    NIC (Network Interface Card)

    MAC address

    First 24 Bits (3 Bytes)

    Organizationally unique identifier (OUI)

    Last 24 Bits (3 Bytes)

    Vendor ID (VID)

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    Physical Layer

    NIC (Network Interface Card)

    MAC address

    First 24 Bits (3 Bytes)

    Organizationally unique identifier (OUI)

    Last 24 Bits (3 Bytes)

    Vendor ID (VID)

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    Physical Layer

    A hub is a device for connecting multiple Ethernet devices

    together and making them act as a single network segment.

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    Physical Layer

    How Hubs work ?

    1. Amplifies the signal.

    2. Transfer the signal on its all ports.

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    Physical Layer

    What is the term Unicast , Mult icast & Broadcast?

    Broadcast means transmitting the same data to all possible

    destinations.

    Multicast sends data only to interested destinations by using

    special address assignments.

    Unicastmessaging is used for all network processes in which

    a private or unique resource is requested.

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    Physical Layer

    What is the term Broadcast Domain & Coll is ion Domain?

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