A Video-Hosting Website Has Two Types of Members: Those Who

question 86

Multiple Choice

A video-hosting website has two types of members: those who pay a fee, and those who do not. Each video upload places a message in Amazon SQS. A fleet of Amazon EC2 instances polls Amazon SQS and processes each video. The developer needs to ensure that the videos uploaded by the paying members are processed first. How can the developer meet this requirement?

• A) Create two SQS queues; one for paying members, and one for non-paying members. Poll the paying member queue first and then poll the non-paying member queue.
• B) Use SQS to set priorities on individual items within a single queue; give the paying members' videos the highest priority.
• C) Use SQS to set priorities on individual items within a single queue and use Amazon SNS to encode the videos.
• D) Create two Amazon SNS topics: one for paying members and one for non-paying members. Use SNS topic subscription priorities to differentiate between the two types of members.

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Definitions:

Variable-Ratio Reinforcement

A reinforcement strategy in which a response is rewarded after an unpredictable number of responses, promoting a high and steady rate of response.

Internal Locus

The belief that one has control over their life and the outcomes of their actions, as opposed to external forces.

Control

In experimental research, the standard by which experimental observations are compared, or the ability to direct influence or regulate a situation or mechanism.

Negative Punishment

A method in behavioral psychology where a desirable stimulus is removed following an unwanted behavior, aiming to decrease the likelihood of the behavior occurring again.