ECET 490 Entire Course New Flashcards
ECET 490 Week 3 Homework New
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ECET 490 Week 3 Homework New
ECET 490 Week 3 Homework
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ECET 490 Week 4 Homework New
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ECET 490 Week 4 Homework New
- Process 1 sends three messages successively to process 2.
What is the possible order in which the messages may arrive at process 2 if
- In the setSoToimeout method for theDatagramSocket (or other classes), what happens if the timeout period is set to 0? Does it mean that the timeout happens immediately? Consult the online Java API t find the answer.
- Write a Java code fragment that may appear in a main method to open a datagram socket for receiving a datagram up to 100 bytes, timing out in 5 seconds. If a timeout does occur, message “timed out on receive” should be displayed on screen.
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ECET 490 Week 4 iLab New
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ECET 490 Week 4 iLab New
TCP Rental Car Client/Server part 2
Summary (two sentences): Code a Rental Car Client/Server project multi-threaded in Week 4 using TCP. Use the appropriate data streams to build the management system for this project.
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ECET 490 Week 5 Homework New
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ECET 490 Week 5 Homework New
Page 179 Exercise 6 (a, b)
6.This exercise uses EchoServer1 andEchoClient1, which use connectionless datagram sockets for the Echo service.
Compile Echo1.java (javac Echo1.java). Then:
a. Run the programs by starting the server first (don’t forget to specify a port number as a command-line argument), then the client. Conduct a session and observe the diagnostic messages displayed on both sides. Describe your observations of the sequence of events.
b. With the server running, start two clients in separate windows. Can you conduct two client sessions in parallel? Describe and explain your observations. Do your observations agree with the sequence diagram in Figure 5.23?
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ECET 490 Week 5 iLab Rental Car Client Server using Java RMI New
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ECET 490 Week 5 iLab Rental Car Client Server using Java RMI New
Rental Car Client/Server using Java RMI
Summary (two sentences): Code a Rental Car Client/Server project multi-threaded in Week 5 using Java RMI. Define a remote interface server and client using some of the week 4 code already written or supplied.
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Key Results: The main result I accomplished was in understanding how the RMI was supposed to work. I understand that the code should create an object of the interface that allows the client to access and use the InventoryManager code and manage the rental cars. With each object instantiation (by creating a new client) multiple clients would be able to use the server database methods.
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Key Conclusions (technical): The key technical conclusion I reached was in seeing how the remote interface was supposed to work. I could see how much easier this is code than the Week 4 assignment although, I never reached a working server and client yet again. I ran into a null pointer exception that I couldn’t identify how to fix in the InventoryManager Server code. If I then executed the client code it would infinitely loop waiting for a connection. Again, I’m sure I’m missing something simple, but outside my grasp for the moment.
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