datagram service 中文意思是什麼
datagram service
解釋
數據包業務-
By using datagram service ( udp or wdp ), wtp provides more reliable transmission service than pure datagram service
Wtp採用數據報服務（ udp或wdp ） ，提供給wsp比純數據報更可靠的傳輸服務。 -
To send a datagram using udp, you must know the network address of the network device hosting the service you need and the udp port number that the service uses to communicate
要使用udp發送數據文報，必須知道承載所需服務的網路設備的網路地址以及該服務用於通信的udp埠號。 -
Because it is packet - oriented, icmp is an unreliable host - to - host datagram service in a system of interconnected networks, offering no guarantee of delivery
因為icmp是面向包的，所以它在相互連接的網路系統中是不可靠的主機對主機數據報服務，提供無保證的傳遞。 -
Wtls ( wireless transport layer security ) of the security layer is optional. it is used between wap application service and datagram service
安全層wtls （ wirelesstransportlayersecurity ）是可選的，它應用於wap應用業務及數據報業務之間。 -
Designed as a replacement of udp, wdp provides the same wap datagram service interface as udp. it can use the short message platform when there is no ip traffic
Wdp設計為udp的替代，像udp一樣提供相同的wap數據報服務介面，它在下層沒有ip承載時可使用簡訊平臺。 -
Wtp performs the reliability feature needed by wsp for requestresponse and reliable push operations so as to increase the reliability of datagram service. since it is based on messages, it can serve applications like browse relatively well
Wtp執行wsp需要的可靠性特性，用以請求應答和可靠的push操作，主要用於提高數據包服務的可靠性，是基於消息的，能較好地為瀏覽等應用服務。 -
It is an ordinary datagram service, providing consistent service for the higher layer and general interfaces for the protocol on the higher layer by using the bearer network on the lower layer so as to adapt the higher layer to the lower - layer network. this makes the higher - layer protocol unrelated to the lower - layer bearer network
Wdp是一般數據報服務，使用下層承載為上層提供一致的服務，為上層協議提供通用介面，使其上層適配到指定的下層承載網路中，這使得上層協議可以與下層承載網路無關。 -
However, ip multicast make use of udp protocol to deliver datagram on the transport layer, which only provides a " best effort delivery " service, so this protocol ca n ' t sure the reliability of data transmission
然而ip多播使用的傳輸層協議是udp協議，提供的數據傳輸只是「盡力交付」 ，不能保證數據傳輸的可靠性。
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