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Why does the TCP header have a header length field and UDP header does not?
in tcp header (32 bits) we have a field that is called options and padding that has variable in length and the header length shows the actual header size i.e size of 20 octets+size of options and padding field and in UDP we dont have any field like that and its header is fixed of 8 OCTETS (32 bits header size) refrence: WIRELESS COMMUNICATIONS AND NETWORKS by William Stallings Second Edition pg 91(see fig)
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 does the protocol field in the IP header identify?
The protocol field, in the IP header, identifies what kind of data is in the IP packet - the upper-layer protocol. For example, if the code is 6, that means that the data is a TCP segment.
Which IPv4 header field is responsible for defining the priority of the packet?
differentiated services
What field of the IP header does the Tracert program use to get the IP address of routers in the path?
it uses the time-to-live (TTL) field.
What is Ethernet header?
An Ethernet header is a portion of data that precedes the payload in an Ethernet frame, containing essential information for data transmission over a network. It typically includes the source and destination MAC addresses, the EtherType field to indicate the protocol used in the payload, and other control information. The header enables devices on a local area network (LAN) to identify and process the incoming frames correctly. In standard Ethernet frames, the header is usually 14 bytes long.
What is the function of the FCS field in an Ethernet frame explain how it is used how it is used to make a header?
In an Ethernet frame, FCS stands for "Frame Check Sequence". It is a four-octet field used to verify that the frame was received without loss or error. The method used for verification is known as a Cyclic Redundancy Check (CRC).
What must a nail be contained within to become a temporary magnet?
A magnetic field.
An ip packet to be transmitted by ethernet is 60 bytesif LCC is not in use is padding needed in ethernet and if so how many bytes?
Yes, padding is needed for an Ethernet frame if the IP packet is only 60 bytes and the Length/Type field (LCC) is not in use. Ethernet frames must be at least 64 bytes in total, including the header and trailer. Since the Ethernet header is 14 bytes and the trailer (Frame Check Sequence) is 4 bytes, the total without padding is 78 bytes. Therefore, 0 bytes of padding are needed because the total frame size exceeds the minimum requirement.
Why does the TCP header have a header length field and UDP header does not?
in tcp header (32 bits) we have a field that is called options and padding that has variable in length and the header length shows the actual header size i.e size of 20 octets+size of options and padding field and in UDP we dont have any field like that and its header is fixed of 8 OCTETS (32 bits header size) refrence: WIRELESS COMMUNICATIONS AND NETWORKS by William Stallings Second Edition pg 91(see fig)
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 Content-Type header field used for?
The content-type header field is used to explain what the body of the text is about. Specific media types and other details pertaining to the message can be specified in the field.
What contains hot gases at high temperature?
In a fusion reactor the hot gases or plasma are contained within a magnetic field.
What Ethernet II frame type contains a 2 byte field which differentiates it from the older Ethernet 802.3 and Ethernet 802.2 frame types?
Type
Does The Ethernet II frame type contains a 2-byte field which differentiates it from the older Ethernet 802.3 and Ethernet 802.2 frame types?
type
The Ethernet II frame type contains a 2-byte field which differentiates it from the older Ethernet 802.3 and Ethernet 802.2 frame types?
type
What Ethernet II frame type contains a 2-byte field which differentiates it from the older Ethernet 802.3 and Ethernet 802.2 frame types?
type
