Week 6 Interprocess Communication

22問 • 11ヶ月前

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通報

問題一覧

What is the primary reason Interprocess Communication (IPC) mechanisms are needed for processes, as opposed to threads?

Processes generally have their own private address space and do not share program variables in common

Which of the following is NOT listed as an advantage of process cooperation?

Reduced system overhead

Pipes and sockets

A UNIX pipe is characterized by all of the following EXCEPT:

It is typically used for communication between unrelated processes on different computers.

When using shared files for IPC, what is required to allow cooperating processes to share a resource safely?

File locking or record locking

System V IPC incorporated APIs for single-system IPC, which included

Shared memory segments, semaphores, and message queues

How are shared memory segments most commonly implemented on modern UNIX-like systems, according to the lecture?

By using the virtual memory system explicitly through memory-mapped files via the POSIX “mmap function”

What is a key issue that arises once shared memory is established between processes?

Problems of data consistency, similar to those with threads.

In message passing, what is the term for the synchronization where the sender always waits for the receiver, in a zero-capacity queue system?

Rendezvous

Which of the following is a key distinction between Sockets and Pipes mentioned in the lecture?

Sockets can connect unrelated processes, including processes on different computers, unlike pipes.

The goal of Remote Procedure Call (RPC) is to provide:

Access-transparent call semantics, making remote calls look like local procedure calls.

A challenge for RPC transparency includes the need for External Data Representation (XDR). Why is this necessary?

To standardize the representation of data types across machines with potential differences (e.g., endianness, character encoding, floating-point representation)

Inter-process Communication (IPC) traditionally refers only to mechanisms for processes running on different computers.

False

One of the benefits of process cooperation is computation speed-up through parallel processing.

True

Pipes allow processes to communicate using shared variables in memory.

False

A UNIX pipe is a two-way byte stream, allowing data to flow in both directions simultaneously.

False

When using shared files for IPC, file locking ensures that only a portion of the file is locked, while record locking locks the whole file

False

System V was a dialect of UNIX that incorporated APIs for single-system IPC, including shared memory segments.

True

Processes typically have private address spaces and generally do not share memory, but specific system calls can create shared memory areas

True

In message passing, a "zero-capacity queue" means the sender never waits for the receiver.

False

Sockets are typically used for stream-oriented communication and can connect unrelated processes, including those on different computers.

True

Remote Procedure Call (RPC) aims for "semantic transparency," meaning RPC should have the same syntax as a local procedure call.

False

1.1: Software life cycle

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1.1: Software life cycle

17問 • 2年前

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Intro to computing - Lecture 1

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Intro to computing - Lecture 1

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Intro to Comp - Lecture 4

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Intro to Comp - Lecture 4

Chapter 5

Chapter 5

Intro to comp - Lecture 3

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Intro to comp - Lecture 3

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Intro to Comp - Lecture 2

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Intro to Comp - Lecture 2

Quiz 2

Quiz 2

1.2: Software Engineering Methodologies

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1.2: Software Engineering Methodologies

20問 • 2年前

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2.2: Relational Model and ER Model

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2.2: Relational Model and ER Model

19問 • 2年前

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2.3: Converting ER Model to Relational model

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2.3: Converting ER Model to Relational model

Quiz 1

Quiz 1

Week 2 Concurrency

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Week 2 Concurrency

10問 • 11ヶ月前

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Week 3 Mutual Exclusion

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Week 3 Mutual Exclusion

3回閲覧 • 12問 • 11ヶ月前

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Week 4 Synchronisation

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Week 4 Synchronisation

10問 • 11ヶ月前

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Week 5 Processes and scheduling

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Week 5 Processes and scheduling

22問 • 11ヶ月前

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Week 7 File system

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Week 7 File system

13問 • 11ヶ月前

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Week 8 Virtual Memory

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Week 8 Virtual Memory

22問 • 11ヶ月前

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Week 9 Architectures

ユーザ名非公開 · 10問 · 11ヶ月前

Week 9 Architectures

BigO scenario qns

BigO scenario qns

問題一覧

What is the primary reason Interprocess Communication (IPC) mechanisms are needed for processes, as opposed to threads?

Processes generally have their own private address space and do not share program variables in common

Which of the following is NOT listed as an advantage of process cooperation?

Reduced system overhead

Pipes and sockets

A UNIX pipe is characterized by all of the following EXCEPT:

It is typically used for communication between unrelated processes on different computers.

When using shared files for IPC, what is required to allow cooperating processes to share a resource safely?

File locking or record locking

System V IPC incorporated APIs for single-system IPC, which included

Shared memory segments, semaphores, and message queues

How are shared memory segments most commonly implemented on modern UNIX-like systems, according to the lecture?

By using the virtual memory system explicitly through memory-mapped files via the POSIX “mmap function”

What is a key issue that arises once shared memory is established between processes?

Problems of data consistency, similar to those with threads.

In message passing, what is the term for the synchronization where the sender always waits for the receiver, in a zero-capacity queue system?

Rendezvous

Which of the following is a key distinction between Sockets and Pipes mentioned in the lecture?

Sockets can connect unrelated processes, including processes on different computers, unlike pipes.

The goal of Remote Procedure Call (RPC) is to provide:

Access-transparent call semantics, making remote calls look like local procedure calls.

A challenge for RPC transparency includes the need for External Data Representation (XDR). Why is this necessary?

To standardize the representation of data types across machines with potential differences (e.g., endianness, character encoding, floating-point representation)

Inter-process Communication (IPC) traditionally refers only to mechanisms for processes running on different computers.

False

One of the benefits of process cooperation is computation speed-up through parallel processing.

True

Pipes allow processes to communicate using shared variables in memory.

False

A UNIX pipe is a two-way byte stream, allowing data to flow in both directions simultaneously.

False

When using shared files for IPC, file locking ensures that only a portion of the file is locked, while record locking locks the whole file

False

System V was a dialect of UNIX that incorporated APIs for single-system IPC, including shared memory segments.

True

Processes typically have private address spaces and generally do not share memory, but specific system calls can create shared memory areas

True

In message passing, a "zero-capacity queue" means the sender never waits for the receiver.

False

Sockets are typically used for stream-oriented communication and can connect unrelated processes, including those on different computers.

True

Remote Procedure Call (RPC) aims for "semantic transparency," meaning RPC should have the same syntax as a local procedure call.

False