Io models in network programming
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I/o models in network programming
Since TCP packets can arrive in wrong order, the port must not be closed immediately to allow late packets to arrive. Knowledge of important protocols e. So to ensure, national and worldwide data communication, systems must be developed which are compatible to communicate with each other. It was also used as the initial network transport layer for the file system. Though, UDP is not reliable, and messages may be lost or delivered out of order. Chapter 6 focuses on writing high-performance, scalable servers, and the remaining chapters introduce more specialized Winsock topics. A common enterprise use of I/o models in network programming multicast is for IPTV applications 8 What is difference between Topic and Queue in JMS? Few more questions to add : 1 What is multicasting? Out of these four, 3 are well known in most of the time, what is not known is client port, this is where ephemeral ports comes into picture. Java Networking and Socket Programming Questions Answers Here is my list of 15 interview questions related to networking basics, internet protocol and socket programming in Java. Networking and Socket Programming is one of the important area of Java programming language, especially for those programmers, who are working in client server based applications.
Similar to TCP, UDP protocol also uses ephemeral port, while sending datagram. If receiver find that it has missed a sequence number, it can ask for replay of that message from Server. This is the simplest solution, code can be found here:.
This is called a model for Open System Interconnection OSI and is commonly known as OSI model. Multi-casting can only be implemented using UDP, because it sends full data as datagram package, which can be replicated and delivered to other subscribers. Main difference between Topic and Queue in Java Messaging Service comes when we have multiple consumers to consumer messages. This answer is enough for most of the interviews, but you need to be more detailed when you are interviewing as Java developer for high frequency trading desk. Multi-casting or multicast transmission is one to many distribution, where message is delivered to a group of subscribers simultaneously in a single transmission from publisher. Apache MINA, which does all the low level work for them. Java provides excellent support to developer such server. Under this condition presentation layer plays a role of translator.
I/o models in network programming
If we set-up multiple to consume messages from Queue, each messages will be dispatched to only one thread and not all thread. The ISO-OSI model is a seven layer architecture. In fact, this is bare minimum knowledge of sockets and protocols every programmer should have. Main focus of this post is to make Java developer familiar with low level parts e. Similar to TCP, UDP protocol also uses ephemeral port, while sending datagram.
Though, UDP is not reliable, and messages may be lost or delivered out of order. There were four building blocks in the first version of Portals: the single block, the dynamic block, the independent block and the combined block.