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ccna 200 301 booksmart soundtrack.DA (Destination Address) This is a 48-bit value, with the leftmost value being the LSB (least significant bit). The DA is used by the receiving workstation to determine which node the inbound packet is destined for. The destination address can be a single device MAC address, a broadcast MAC address, or a multicast MAC address. Remembering that all bits of the broadcast address are 1 (or F in hexadecimal), such data frames are sent to all devices. However, multicast addresses are only sent to certain devices in the network that have similar characteristics.SA (Source Address) The source address is a 48-bit MAC address that identifies the transmitting device, with the leftmost value being LSB. broadcast and multicast addresses cannot be used in the SA field.Length or Type 802.3 uses the length field while Ethernet Type II uses the type field to identify network layer protocols. 802.3 does not identify upper-layer protocols and therefore must be used to encapsulate private LAN protocols such as IPX.Data This is the packet that is sent down from the network layer to the data link layer. The length range for this part is 46.1500 bytes.FCS (Frame Check Sequence) The FCS is the last field that makes up the data frame and contains the result of the CRC checksum calculation. CRC is a mathematical algorithm that is run at the time of creating each data frame. When the receiver device receives the data frame, it also runs the CRC algorithm, resulting in the same calculation as the one carried in the frame. If it is different, an error is considered to have occurred during transmission, and thus the data frame is discarded.Let's pause here and take a look at some of the data frames captured by the network analyzer. The following 3 frames have only 3 fields: Destination, Source, and Type (shown as Protocol Type in this parser).Destination:00:60:f5:00:lf:27 Source: 00:60:f5:00:lf:2c ProtocolType:08-00IPThis is an Ethernet Type II frame. The type field is IP, or 08.00 in hexadecimal (in most cases it will be written as 0x800). oThe following frame has the same fields, so it must also be an Ethernet Type II frame.Destination: EthernetBroadcast Source: 02:07:01:22:de:a4 ProtocolType: 81-37NetWare