4.3 Flashcards
Contains filler Bitch to ensure that the size of the TCP Heather is a multiple of 32 bits
Variable
Padding
Contains data sent by the source host data field is not part of the TCP header it is encapsulated by the TCP header the size of the data field depends on how much data needs to be transmitted constraints on the TCB segment size imposed by the network type and the limitation that the segment must fit insane and I pee packet at the next wire
Variable
Data
This establishes a session before TCB transmits the actual data such as an HTTPrequest for a webpage
TCP Three-way handshake
The TCP three-way handshake works as follows
Step one SYN request for a connection
Step two SYN/ACK response for request
Step three acknowledgment or ACK
This is an unreliable connection was protocol
Udp
UDP does not guarantee delivery of data and no connection is established by UDP before data is
Transmitting
By default UDP provides no handshake to establish connection acknowledgment or transmissions received our checking or sequencing or flow and is therefore more efficient and
Faster than TCP
Where is TCB headers 10 feelings for you to be header contains only
4 Fields
This belongs to the network layer of the OSI model is specifies were Dad it should be delivered identifying the data source and destination IP address
Ip
This is a connections protocol meaning it is not establish a schedule to send is packets each package travels separately from all the other package in the series were some messages might take a different route than others even if they’re going to the same place
IP
This field is four bits long and it identifies the version number of the protocol
Version
Yes IPV for packet Field is forbid long and it indicates the IP header in bites. The IP header can be a minimum of 20 bites to a maximum of 60 bites in fort bite increments
Internet header length
This field is eight bits long and informs routers the level of precedence they should apply with processing the incoming packet
Differentiated services
This IPV four pack of field is 16 bits wrong and he identifies the total length of the IP packet including header and data in bytes
Total length
This Apple TV for packet field is 16 bits long identifies the message to which packet belongs at enables the receiving host to reassemble fragmented messages
Identification
