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2900282
CSSE4004 - Lecture 3
Descrição
CSSE4004 - Lecture 3
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csse4004
uq
distributed computing
csse4004
Quiz por
tb22
, atualizado more than 1 year ago
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Criado por
tb22
aproximadamente 9 anos atrás
274
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Resumo de Recurso
Questão 1
Questão
Which of the following is true about typical RPC
Responda
Synchronous and transient
Synchronous and persistent
Nonblocking and transient
Synchronous and temporary
Questão 2
Questão
What is not a common protocol that middleware provides?
Responda
Security
Transaction
Message queuing
Concurrency
Questão 3
Questão
Which of these is not a type of synchronicity?
Responda
Persistent asynchronous communication
Receipt-based transient synchronous communication
Response-based transient synchronous communication
Multicast response synchronization
Questão 4
Questão
This is not an interleaved transmission
Image:
e9cebe8b-595a-4747-8986-a851364b4d00 (image/png)
Responda
True
False
Questão 5
Questão
Which of the following is false about publish-subscribe
Responda
One message might be delivered to multiple recipients
Subscriptions may be conditional upon the content of the message
The broker is responsible for deciding which subscribers should receive the message
The sender specifies which recipients should receive the message
Questão 6
Questão
Which of these is NOT an issue resolved by Parameter marshaling?
Responda
Client and server have different data representations
Client and server have to agree on the same encoding
Interpreting data and transforming it into machine dependent representation
Generating stubs to interface with server side application
Questão 7
Questão
What does Message-oriented communication typically allow over traditional RPC?
Responda
Asynchronous communication
Persistent communication
Reliable communication
Multicast RMI
Questão 8
Questão
When is stream-oriented communication appropriate?
Responda
When the the temporal relationship between different data items is essential
When large blocks of data such as video files are involved
When reliable communication is not required
When buffering is not acceptable
Questão 9
Questão
Which of the following is true about Persistent synchronous communication if the recipient is not running
Responda
The message is stored and the sender receives accepted acknowledgement immediatley
The message is stored and the sender receives accepted acknowledgement when the recipient starts
The sender is blocked until the receiver starts
The message is discarded and the sender is notified when the receiver starts
Questão 10
Questão
Which is true about Transient asynchronous communication if the reciever is not running
Responda
The message will not be received but the sender won't be blocked
The message will be queued until the receiver starts
The sender will automatically retry until receiver starts
The message will not be received and the sender will be blocked
Questão 11
Questão
Which of the following is true about parameter specifications and stubs?
Responda
Parameters passed by value do generally pose any problems
It is only possible to pass parameters by value if they are primitive data types
Interfaces (procedures) are often specified in Interface Definition Languages (IDL) and compiled into stubs
It is completely impossible to pass parameters by reference
Questão 12
Questão
What type of communication is this?
Image:
2fb84f17-c099-4d2f-a37b-46d4090226f4 (image/png)
Responda
Receipt-based transient synchronous communication
Transient asynchronous communication
Delivery-based transient synchronous communication at message delivery
Persistent synchronous communication
Questão 13
Questão
What are the basic operations of a message queue?
Responda
Put, Get, Poll, Notify
Push, Get, Poll, Notify
Pop, Get, Poll, Subscribe
Put, Get, Notify, Acknowledge
Questão 14
Questão
What is the main role of a message broker?
Responda
To transform messages from sender's format to receive'’s format
To handle retries if a receiver fails to acknowledge the message
To manage who is authorized to subscribe to which queue
To balance messages between multiple storage queues
Questão 15
Questão
What does this diagram represent?
Image:
fe2b6b1d-f5d8-47d4-af51-03ed5f94ea7d (image/png)
Responda
Traditional RPC
Asynchronous RPC
Passing a value by reference
A callback following an asynchronous RPC
Questão 16
Questão
Which layer does the middleware layer sit between?
Responda
Application and transport
Transport and network
Application and network
Operating system and Network
Questão 17
Questão
What kind of communication is this?
Image:
60c8fd70-3426-4dca-ba3d-7817be7e8e00 (image/png)
Responda
Persistent asynchronous communication
Persistent synchronous communication
Response-based transient synchronous communication
Transient asynchronous communication
Questão 18
Questão
Is the caller of an RPC usually blocked while waiting for a result?
Responda
True
False
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