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Data Processing at Scale > week 7 - practice quiz > Flashcards

week 7 - practice quiz Flashcards

1
Q

EC2 is one of the cloud services offered by Amazon. What does EC2 stand for?

1) Elastic Cloud Computing
2) Electronic Commerce Computing
3) Efficient Cloud Computing

A

1) Elastic Cloud Computing

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2
Q

What is the name of Amazon’s cloud database storage system?

1) AmazonDB
2) BigTable
3) DB2
4) SimpleDB

A

4) SimpleDB

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3
Q

What is the name of Amazon’s messaging service, which enables communications among applications?

1) Simple Queue Service
2) Elastic Block Storage
3) Simple Storage Service
4) Structured Queue Service

A

1) Simple Queue Service

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4
Q

What kind of cloud service is AWS?

1) IaaS (Infrastructure as a Service)
2) DaaS (Database as a Service)
3) PaaS (Platform as a Service)
4) SaaS (Software as a Service)

A

1) IaaS

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5
Q

From which object is an AWS instance created from?

1) Amazon Virtual Image
2) Amazon Machine Image
3) Amazon Virtual Machine
4) Amazon Virtual Object

A

2) Amazon Machine Image

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6
Q

Where are Amazon Machine Images (AMI) stored?

1) Relational Database Service (RDS)
2) SimpleDB
3) Simple Storage Service (S3)
4) Elastic Block Store (EBS)

A

3) Simple Storage Service (S3)

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7
Q

What kind of IP address is automatically assigned to an instance by AWS?

1) Elastic IP
2) Persistent IP
3) Static IP
4) Non-persistent IP

A

4) Non-persistent IP

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8
Q

An AWS instance gets both a private and public IP address. Which of the following mechanisms maps the public IP address to the private IP address.

1) P2PT (Public to Private Translation)
2) NAM (Network Address Mapping)
3) P2PM (Public to Private Mapping)
4) NAT (Network Address Translation)

A

4) NAT (Network Address Translation)

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9
Q

What is the backup of a volume called in Amazon Web Services?

1) Snapshot
2) Master
3) Copy
4) Replication

A

1) Snapshot

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10
Q

Where are snapshots of a volume stored in Amazon Web Services?

1) Simple Storage Solution (S3)
2) Elastic Database Service (EDS)
3) Elastic Block Store (EBS)
4) Relational Database Service (RDS)

A

1) Simple Storage Solution (S3)

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11
Q

What is the difference between Amazon EBS and S3?

1) EBS is scalable but S3 is not.
2) EBS stores EC2 volumes while S3 can store any object.
3) EBS is Software as a Service (SaaS) and S3 is Infrastructure as a Service (IaaS).
4) EBS is free and S3 is a paid service.

A

2) EBS stores EC2 volumes while S3 can store any object.

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12
Q

Which of the following AWS components enable you to control access to AWS services and resources?

1) IAM
2) SQS
3) EBS
4) RDS

A

1) IAM

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13
Q

What is the technical term used to describe the mechanism that bridges the speed difference between the sender and the receiver applications in the cloud?
1 point

1) Load balancing
2) Buffering
3) Queuing
4) Autoscaling

A

2) Buffering

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14
Q

In order to bridge speed differences between sender and receiver applications, which AWS component uses a buffering mechanism?

1) SQS
2) S3
3) EC2
4) EBS

A

1) SQS

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15
Q

What is the most secure way of accessing and managing AWS instances?

1) Via HTTP protocol
2) Using the command line interface
3) Using the graphical user interface
4) Logging in as “root”

A

2) Using the command line interface

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16
Q

What is the function of an Amazon Machine Image (AMI)?

1) To serve as a template for creating new AWS instances.
2) To serve as a recovery backup after a failure.
3) To create snapshot images of server instances.
4) To serve as a storage space for snapshots.

A

1) To serve as a template for creating new AWS instances.

17
Q

The cost of using AWS services can be quite high during peak times. Which of the following AWS services can be used to monitor resource usage and get notification when usage spikes?

1) Elastic Load Balancing
2) Simple Queue Service
3) Amazon Machine Image
4) CloudWatch

A

4) CloudWatch

18
Q

Under which of the following scenarios could autoscaling be necessary for a web server?

1) The web server receives requests from multiple clients.
2) The web server receives client requests from multiple countries.
3) The web server receives higher number of client requests than usual.
4) The web server receives client requests that are different in nature.

A

3) The web server receives higher number of client requests than usual.

19
Q

What are the names of the queues implemented by Amazon SQS during autoscaling of a single web server?

1) Initial and final queues
2) Request and response queues
3) Originator and responder queues
4) Sender and receiver queues

A

2) Request and response queues

20
Q

How does AWS Elastic Load Balancing handle autoscaling?

1) By killing some of the requests to make room for new ones.
2) By sending the request back to its originator.
3) By redirecting load to multiple AWS instances.
4) By placing client requests in to a single queue.

A

3) By redirecting load to multiple AWS instances.

21
Q

What does IaaS stand for in cloud computing?

1) Intranet as a Service
2) Infrastructure as a Service
3) Internet as a Service
4) Intrastructure as a Service

A

2) Infrastructure as a Service

22
Q

Which of the following cloud service models allows its users to control operating systems, such as Microsoft Windows or Apple OSX?

1) SaaS
2) PaaS
3) DaaS
4) IaaS

A

4) IaaS

23
Q

What kind of cloud service is iCloud provided by Apple?

1) Public cloud
2) Private cloud
3) Hybrid cloud
4) Exclusive cloud

A

1) Public cloud

24
Q

What is one disadvantage of private cloud as compared to public cloud?

1) It is more expensive.
2) It provides fewer control mechanisms.
3) It is less secure.
4) It provides redundant storage.

A

1) It is more expensive.

25
Q

In Amazon Web Services (AWS), what does SQS stand for?

1) Simple Queue Service
2) Simple Query Service
3) Structured Queue Service
4) Structured Query Service

A

1) Simple Queue Service

26
Q

What is the maximum message size in the SQS provided by Amazon Web Services?

1) 256 KB
2) 64 KB
3) 128 KB
4) 1024 KB

A

1) 256 KB

27
Q

EC2 is one of the cloud services offered by Amazon. What does EC2 stand for?

1) Efficient Commerce Computing
2) Efficient Cloud Computing
3) Elastic Compute Cloud
4) Electronic Commerce Computing

A

3) Elastic Compute Cloud

28
Q

What is the name of Amazon’s cloud database storage system

1) BigTable
2) DB2
3) AmazonDB
4) SimpleDB

A

4) SimpleDB

29
Q

What is the name of Amazon’s messaging service, which enables communications among applications?

1) Simple Queue Service
2) Simple Storage Service
3) Structured Queue Service
4) Elastic Block Storage

A

1) Simple Queue Service

30
Q

What is the main function of the AWS Command Line Interface?

!) A help file for AWS

2) A script generator for AWS
3) A billing system for AWS
4) A management tool for AWS

A

4) A management tool for AWS

31
Q

Which of the following user accounts is the most insecure way to manage AWS?

1) webmaster
2) master
3) root
4) visitor

A

3) root

32
Q

In cloud system terminology, what does autoscaling refer to?

1) Acquiring and relinquishing cloud resources on demand
2) Subscribing to and unsubscribing from services
3) Installing and uninstalling programs
4) Deleting and undeleting components.

A

1) Acquiring and relinquishing cloud resources on demand

33
Q

Which of the following AWS services can be used if there must be only one AWS instance and it needs autoscaling?

1) Simple Queue Service
2) Elastic Load Balancing
3) CloudWatch
4) Structured Query Service

A

1) Simple Queue Service

34
Q

What is the correct order of controllers used in a typical AWS cloud processing?

1) Launch controller, monitor controller, shutdown controller, billing controller
2) Launch controller, monitor controller, billing controller, shutdown controller
3) Launch controller, billing controller, monitor controller, shutdown controller
4) Billing controller, launch controller, monitor controller, shutdown controller

A

1) Launch controller, monitor controller, shutdown controller, billing controller

Data Processing at Scale (28 decks)

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