Table of Contents
- 1 What are the problems of passing pointers as parameters in RPC?
- 2 What are the challenges of RPC?
- 3 How are parameters and results passed to a remote procedure?
- 4 Which parameter passing technique is used when an object is passed as parameter to a function?
- 5 What are two main issues of RPC?
- 6 Why is marshalling important in remote procedure call?
- 7 How parameters are passed?
- 8 What are the semantics of remote procedure call?
- 9 What is remote procedure call (RPC)?
- 10 What is the use of RPC in server side?
What are the problems of passing pointers as parameters in RPC?
Passing Value Parameters- Consider a remote procedure, sum(i, j), which takes two integer parameters and returns their arithmetic sum. The client stub takes its two parameters and puts them in a message and also puts the name or number of the procedure to be called in the message.
What are the challenges of RPC?
Problems with RPC
- Who is the Server and Who is the Client? The first problem mentioned in the paper is that RPC is not appropriate for all computations.
- Unexpected Messages.
- Single Threaded Servers.
- The Two Army Problem.
- Multicast.
- Parameter Marshalling.
- Parameter Passing.
- Global Variables.
How are parameters and results passed to a remote procedure?
Remote Procedure Call (RPC)
- A client invokes a client stub procedure, passing parameters in the usual way.
- The client stub marshalls the parameters into a message.
- The client stub passes the message to the transport layer, which sends it to the remote server machine.
What does RPC stand for briefly discuss the potential problems in RPC communication?
Remote Procedure Call
What is Remote Procedure Call (RPC)? Remote Procedure Call is a software communication protocol that one program can use to request a service from a program located in another computer on a network without having to understand the network’s details.
How are parameters passed in RPC?
Parameter Passing in RPC: The client stub takes its two parameters and puts them in a message and also puts the name or number of the procedure to be called in the message. When the message arrives at the server, the stub examines the message to see which procedure is needed, and then makes the appropriate call.
Which parameter passing technique is used when an object is passed as parameter to a function?
parameter passing The mechanism used to pass parameters to a procedure (subroutine) or function. The most common methods are to pass the value of the actual parameter (call by value), or to pass the address of the memory location where the actual parameter is stored (call by reference).
What are two main issues of RPC?
While the RPC concept is simple, there are two main problems that make it more complicated than local procedure calls: The network between the calling process and the called process has much more complex properties than the backplane of a computer.
Why is marshalling important in remote procedure call?
Marshalling is the process of transforming the memory representation of an object into another format, which is suitable for storage or transmission to other software applications. Marshalling allows communication between remote objects by converting an object into serialized form.
What is common problem found in distributed system?
Discussion Forum
| Que. | What is common problem found in distributed system? |
|---|---|
| b. | Communication synchronization |
| c. | Deadlock problem |
| d. | Power failure |
| Answer:Deadlock problem |
What is the purpose of passing parameters in and out of methods?
The solution to these issues is to use parameter passing. Parameter passing allows the values of local variables within a main program to be accessed, updated and used within multiple sub-programs without the need to create or use global variables.
How parameters are passed?
In a local method invocation, parameter is passed by reference (the caller and the method called have a reference on the same object), whereas in a remote method invocation, parameters are passed by remote copy when the parameter is not a remote object.
What are the semantics of remote procedure call?
Call semantics define what the client can assume about the execution of the remote procedure; in particular, how many times the procedure was executed. These semantics are important in dealing with error conditions. The three alternatives are exactly once, at most once, and at least once.
What is remote procedure call (RPC)?
Remote Procedure Call (RPC) A remote procedure call is an interprocess communication technique that is used for client-server based applications. It is also known as a subroutine call or a function call. A client has a request message that the RPC translates and sends to the server. This request may be a procedure or a function call
What is passing of parameters by reference in RPC?
Some RPC mechanisms allow passing of parameters by reference in which pointers to the parameters are passed from client to server. Usually they are closed systems in which a single address is shared by many processes in a system. For example distributed systems with distributed shared-memory mechanisms can allow passing of parameters by reference.
What is remote procedure call in MCA?
Remote Procedure Call (RPC) Computer Science MCA Operating System. A remote procedure call is an interprocess communication technique that is used for client-server based applications. It is also known as a subroutine call or a function call. A client has a request message that the RPC translates and sends to the server.
What is the use of RPC in server side?
It is used for client-server applications. RPC mechanisms are used when a computer program causes a procedure or subroutine to execute in a different address space, which is coded as a normal procedure call without the programmer specifically coding the details for the remote interaction.