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A header board, is a vertical structure on the front of flat-bed trailers. Its purpose is to keep the freight from moving forward onto the cab. It is humorusly called a headache rack (it prevents the load from shifting forward therefore prevents the driver from getting a "headache" when the cab is crushed.
The terminology is different for a a dry-van trailer or a refrigerated trailer, or what is sometimes called a "box" trailer, wherein the front is called a bulkhead. Sometimes these two terms are incorrectly interchanged by drivers who lack trucking knowledge.
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What is tcpip header and trailer?
An Ethernet frame has a 14 byte header, a data section, and a 4 byte trailer 14 byte header consist of destination address, source address and type The trailer is for CRC (Cyclic redundancy Check) An Ethernet frame can contain an IP and TCP PDU. IP header most important parts consists of (Version,IHL, Total length,Protocol, source and destination address) In details (Version,Header length,Differentiated services field, total Length, Identification, Flags, fragment offset, Time to live, protocol, header checksum, source and destination address). TCP header most important parts consists of (Source port, Destination port and header Length) In details (Source Port, Destination Port, Sequence number, Acknowledgment number, Header length,Flags,Window and check sum). The details of the IP and TCP header have been taken from a Network protocol Analyzer Wireshark on my own pc.
The PDU at the Network layer is called?
The PDU at the Network layer is referred to as a packet. A PDU at the Data Link Layer is referred to as a frame.
Which three basic parts are common to all frame types supported by the data link layer?
header trailer Data
The Application layer separates data into or discrete amounts of data?
PDU (protocol data units) -Yuriy-
A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data?
Removes the Ethernet header and trailer
What is the correct order for PDU encapsulation?
Frame Header - Network Header - Transport Header - Data - Frame Trailer
What are the parts of a pdu that are always present in any pdu?
The Header and the payload The Header and the payload
What is tcpip header and trailer?
An Ethernet frame has a 14 byte header, a data section, and a 4 byte trailer 14 byte header consist of destination address, source address and type The trailer is for CRC (Cyclic redundancy Check) An Ethernet frame can contain an IP and TCP PDU. IP header most important parts consists of (Version,IHL, Total length,Protocol, source and destination address) In details (Version,Header length,Differentiated services field, total Length, Identification, Flags, fragment offset, Time to live, protocol, header checksum, source and destination address). TCP header most important parts consists of (Source port, Destination port and header Length) In details (Source Port, Destination Port, Sequence number, Acknowledgment number, Header length,Flags,Window and check sum). The details of the IP and TCP header have been taken from a Network protocol Analyzer Wireshark on my own pc.
What is the use of adding header and trailer to the frames?
Trailer is added at only data link layer because data link layer provides error and flow control.Header Contains address of device where frames will be send
What is a header board on a tractor trailer?
header board is a the board on the front of the trailer, or the board that is on the tractor behind the cab/sleeper. this is made of metal and is to prevent the load on trailer coming thru the cab in the event an accident or other emergency
What is the component of data link?
header, packet(data), and trailer
Which one is the two way linked list a Circular link list b Node having header and trailer in the list C Array?
b Node having header and trailer in the list
What is a pdu in the network?
Just answered this question with 2 definitions from webopedia. I have added the link to the source.
What does the device do to the message to get to the encapsulated data?
removes the Ethernet header and trailer
What 3 parts of a data packet?
the answer is a Header,the a Payload, then last is the Trailer
What is data unit formation techniques in osi reference model?
Layer N in the model accepts data from the next higher layer, layer N+1, in the form of a block of data known as a service data unit (SDU). To deliver this SDU to the destination system, a layer N protocol is used between the layer N entity in the source system and the layer N entity in the destination system. The source protocol entity encapsulates the SDU by adding a header and possibly a trailer, containing protocol control information, such as source and destination address and error check codes. The SDU plus header and trailer is known as a protocol data unit (PDU). An SDU may be broken up into multiple chunks and sent out in multiple PDUs, or multiple SDUs may be aggregated and send out in a single PDU, if the protocol allows it.
The PDU at the Network layer is called?
The PDU at the Network layer is referred to as a packet. A PDU at the Data Link Layer is referred to as a frame.
