Processes Operating System Concepts Chapter 3 Quiz

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In direct communication, what is the function to send a message to process P?

deliver(P, message)
transfer(P, message)
send(P, message) (correct)
share(P, message)

How are messages directed and received in indirect communication?

Through queues
Through pipes
Through mailboxes (correct)
Through sockets

What is a property of communication links in indirect communication?

Each pair of processes has exactly one link (correct)
Link may not be unidirectional
Link established only if processes don't share a common mailbox
A link is associated with multiple pair of communicating processes

Which primitive is used to send a message to mailbox A in indirect communication?

send(A, message) (C) Signup and view all the answers

When P1 sends a message to mailbox A and P2 and P3 receive it, who gets the message?

Both P2 and P3 (B) Signup and view all the answers

What is a key aspect of indirect communication?

Messages are directed and received from mailboxes (C) Signup and view all the answers

What is the purpose of the 'while (counter == BUFFER_SIZE)' statement in the Producer code snippet?

To check if the buffer is full before producing more data (A) Signup and view all the answers

In the Consumer code snippet, what does the statement 'out = (out + 1) % BUFFER_SIZE' accomplish?

Moves the consumer to the next buffer location (B) Signup and view all the answers

Which part of the code snippet demonstrates atomicity in handling the 'counter++' operation?

counter = register1 (C) Signup and view all the answers

Why does the Race Condition scenario mention 'count = 5' initially?

To demonstrate a scenario where buffers cannot be filled beyond a certain count (C) Signup and view all the answers

What is the primary reason for no race condition in the first solution where at most N – 1 buffers can be filled?

Limited buffer space prevents simultaneous access issues (A) Signup and view all the answers

Which part of the code snippet is crucial for preventing race conditions in a producer-consumer scenario?

'counter == BUFFER_SIZE' check in Producer (D) Signup and view all the answers

What is the key paradigm for cooperating processes described in the text?

Producer-consumer problem (C) Signup and view all the answers

What is the key difference between the unbounded-buffer and bounded-buffer variations of the producer-consumer problem?

Unbounded-buffer never requires the consumer to wait, bounded-buffer may require the consumer to wait (D) Signup and view all the answers

What is the key challenge in using shared memory for inter-process communication (IPC)?

Providing a mechanism to allow user processes to synchronize their actions when accessing shared memory (B) Signup and view all the answers

Which data structure is mentioned in the text as supporting the bounded-buffer producer-consumer problem?

Array (C) Signup and view all the answers

What is the key difference between the producer-consumer problem and the shared memory approach for IPC?

The producer-consumer problem is controlled by the operating system, while shared memory is controlled by the user processes (B) Signup and view all the answers

What is the purpose of the synchronization discussed in Chapters 6 and 7 of the book?

To provide a mechanism for user processes to control access to shared memory (A) Signup and view all the answers

What is the main purpose of a process in an operating system?

To provide a sequential execution of a program (B) Signup and view all the answers

Which of the following best describes the relationship between a process and an operating system?

A process is a resource managed by the operating system (A) Signup and view all the answers

Which of the following is NOT a key objective of the chapter on processes in the Operating System Concepts textbook?

Explain the concept of virtual memory and paging (B) Signup and view all the answers

Which of the following is a characteristic of a process execution according to the text?

A process must execute its instructions in a sequential fashion (B) Signup and view all the answers

What is the primary purpose of a process in an operating system according to the text?

To provide a sequential execution of a program (A) Signup and view all the answers

What is the primary purpose of the communication ports created by the server in the given scenario?

To facilitate the exchange of messages and callbacks between the client and server (A) Signup and view all the answers

What is the key difference between ordinary pipes and named pipes as described in the text?

Ordinary pipes require a parent-child relationship between the communicating processes, while named pipes do not (D) Signup and view all the answers

Based on the information provided, which of the following statements about the communication between the client and server is correct?

The text does not provide enough information to determine the directionality or duplex nature of the communication (C) Signup and view all the answers

What is the significance of the server returning a handle to one of the communication ports it created?

It provides the client with a way to send messages and receive callbacks from the server (C) Signup and view all the answers

How does the use of communication ports in the given scenario differ from the use of pipes as described in the text?

Communication ports are used for network-based communication, while pipes are used for local communication between processes (B) Signup and view all the answers

What is the primary advantage of using named pipes over ordinary pipes as described in the text?

Named pipes can be accessed from outside the process that created them, while ordinary pipes cannot (C) Signup and view all the answers