ASW_08_EN_Allocation

When computation is done "on premises"

• It is necessary to invest in hardware, licenses, physical spaces, etc.
• You lose control of hardware
• You do less initial investment
• There are more dependence on cloud providers

In a deployment diagram

• You associate artifacts to boxes that represent computational nodes
• You represent class hierarchies together with their interactions
• You describe use cases that will be deployed
• You present the interaction sequence between actors

When computation is done in the cloud

• You can have easier access to expensive hardware
• You require system administration skills
• You warrant a fixed amount of costs
• You need bigger initial investment

The "pets vs cattle" metaphor

• Identifies traditional servers as pets
• Identifies traditional servers as cattle
• Identifies server clusters as pets
• Describes traditional servers as disposables

Edge computing

• tries to improve latency and bandwidth
• Improves big data access with direct access to the server
• Consists in high risk computations
• is the same as on premises computing

Multi-armed bandits

• dynamically adjust the traffic to favor good alternatives
• consist on dividing the users in fixed groups
• are load tests done through multiple attacks
• are used for automated container configuration

Which of the following systems can be used to do load tests?

• Gatling
• Canary tests
• Feature toggle
• Load balancers

Which of the following is true?

• Docker is based on kernel level process isolation
• Startup time in less with virtual machines than with containers
• With virtual machines it is possible to reuse the operating system
• With containers, the servers are not isolated

The high level architecture of docker

• is based on client-server
• uses dockerd as client
• Uses docker hub as client
• Uses dockerd as the image registry

A docker image is

• a read-only template with instructions to create one container
• A process that listens requests to create containers
• A registry to store containers
• An operating system emulator