diff --git a/Network_Plus/Network+_OSI.md b/Network_Plus/Network+_OSI.md index 35e8815..a364345 100644 --- a/Network_Plus/Network+_OSI.md +++ b/Network_Plus/Network+_OSI.md @@ -1,37 +1,37 @@ # __Network +__ -## __OSI Model__ +# __OSI Model__ ## __Layer 1__ Bites * Physical Layer - * It is the connents like Cat 6 RJ45 and fiber. + * It is the connects like Cat 6 RJ45 and fiber. * Its the on and off on the cables. --- ## __Layer 2__ Frames * ### Data Link Layer. * Packagers data int frames and transmits those frames on the network. - * Layer 2 devices view nteworks __logically__. + * Layer 2 devices view networks __logically__. * ### MAC Address * Media Access Control - * Physical addressing system of a device which operates on the logial topology. + * Physical addressing system of a device which operates on the logical topology. * Uses a 48-bit address assigned to a network interface card. * __EX:__ `D2:51:F1:3A:34:65` - * `D2:51:F1` is the vedor code + * `D2:51:F1` is the vendor code * ### Logical Link Control - * Provides connection services and allows acknowledgemnt of receipt of message. + * Provides connection services and allows acknowledgment of receipt of message. * Is the basic form of flow control. - * Provides basic error control functios. + * Provides basic error control functions. * Uses a check sum. * ### How communication synchronized. * Isochronous - * Netwok devices use a common reference a common refernce clock source and create time slots for transmission. + * Network devices use a common reference a common reference clock source and create time slots for transmission. * Synchronous * Network devices agree on clocking method to indicate beginning and end of frames and can use control characters. - * Asynchonous - * Network devices reference thier own internal clocks and use start and stop bits + * Asynchronous + * Network devices reference their own internal clocks and use start and stop bits * ### What Devices are layer 2 * network cards - * Briges + * Bridges * Switch * MAC Address ---