Innehållsförteckning
Vad är ett nätverkspaket?
Internet Protokoll IP, sköter om adresser på Internet. Transmission Control Protocol TCP, ser till att alla paket kommer fram i rätt ordning. User Datagram Protocol UDP, ser till att alla paket kommer fram i rätt ordning. Snabbare än TCP men struntar i om alla paket kommer fram.
Hur samverkar internet?
Internet är en samverkan mellan ett antal leverantörer, allt från din lokale sladd-operatör, till ägare av sjökablar som är så långa att de räcker jorden runt. Så här är Internet inte uppbyggt, om du nu trodde det. I korthet är Internet fysiskt uppbyggt i ett antal nivåer, som hanteras av ett antal operatörer.
What is the difference between a packet and a datagram?
The term datagram is often considered synonymous to packet but there are some nuances. The term datagram is generally reserved for packets of an unreliable service, which cannot notify the sender if delivery fails, while the term packet applies to any packet, reliable or not.
What is datagramsocket and datagrampacket in Java?
Java DatagramSocket and DatagramPacket classes are used for connection-less socket programming. Java DatagramSocket class represents a connection-less socket for sending and receiving datagram packets. A datagram is basically an information but there is no guarantee of its content, arrival or arrival time.
What is a datagram in computer network?
RFC 1594 defines the term Datagram as follows: “A self-contained, independent entity of data carrying sufficient information to be routed from the source to the destination computer without reliance on earlier exchanges between this source and destination computer and the transporting network.”
What happens when the datagram is sent to the targeted device?
When the datagram is sent to the targeted device, there is no assurance that it will reach to the target device safely and completely. It may get damaged or lost in between.