CSSE4004 - Lecture 2

Question 1 of 13

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A file is a fixed resource

Select one of the following:

  • True
  • False

Question 2 of 13

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Which of these are true?

Select one or more of the following:

  • A server which is aware of which clients have a file cached is stateful

  • Servers which obtain their state from cookies are stateful

  • Stateful servers makes it more difficult to handle failures

  • A stateless server can change its own state without informing clients

Question 3 of 13

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Why would you use a thread over a process?

Select one of the following:

  • Because threads share the address space and therefore have lower overhead to start

  • To provide total isolation between different tasks within a process

  • Because processes can only be used for weak consistency

  • Because threads do not require state saving when interrupted

Question 4 of 13

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What is a solution to "a target machine may not be able to execute original code" in the context of code migration

Select one of the following:

  • Interpreted languages running on a virtual machine

  • Passing the code by reference

  • Dynamically reconfiguring the target system

  • Using a cloud computing platform instead

Question 5 of 13

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It is possible to migrate a fastened resource

Select one of the following:

  • True
  • False

Question 6 of 13

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What is the purpose of interceptors

Select one of the following:

  • To change flow of control and allow additional code to be executed

  • To block unauthorized or excessive RPC traffic

  • To update the code with new versions

  • To support binary encoding

Question 7 of 13

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Which of these is an accurate description of a thread?

Select one of the following:

  • Abstraction of activity within process

  • An isolated task containing an independent address space

  • An abstract task that can be passed between nodes within a distributed system over a network

  • The owner of a process

Question 8 of 13

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How can threading improve performance for clients?

Select one of the following:

  • Hide network latency by reacting to next request while previous being transmitted

  • By migrating the thread to the client machine which is more powerful

  • Because threaded servers perform better with threaded clients

  • It doesn't, threads are vulnerable to blocking execution

Question 9 of 13

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Which of these is not a reason to use code migration?

Select one of the following:

  • Reduce communication

  • Continue when disconnected

  • Dynamically deploy components

  • Because .NET is only supported on Windows platforms

Question 10 of 13

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Which of these is not a reason to use code migration?

Select one of the following:

  • Because I do not trust the code and wish to run it on an isolated system

  • Because the product of the code is larger than the code itself

  • Because the client is much more powerful than the server

  • Because the same code will be used many times over and over time the data produced by the code will exceed the size of the code

Question 11 of 13

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Switching between threads is more expensive than switching between processes

Select one of the following:

  • True
  • False

Question 12 of 13

Medal-premium 1

What are core OS functions?

Select one of the following:

  • Process, thread, communication and memory management

  • Process, thread, reliability and memory management

  • Security, IPC, threading and recovery

  • Concurrency, resource isolation, communication and memory management

Question 13 of 13

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Which of these are true about single threaded servers?

Select one or more of the following:

  • Prevents simple scaling to multiprocessor

  • Can only serve multiple concurrent clients if those clients are threaded

  • Generally perform faster by avoiding context switching

  • Does not scale up to serving many clients

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CSSE4004 - Lecture 2

tb22
Quiz by , created over 1 year ago

CSSE4004 - Lecture 2

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tb22
Created by tb22 over 1 year ago
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