Deck 2: Cloud Computing and HDFS Architecture: A Comprehensive Overview

Question 1

Which of the cloud concept is related to pooling and sharing of resources

A)polymorphism
B)abstraction
C)virtualization
D)none of the mentioned

Answer 1

virtualization

Question 2

___________has many of the characteristics of what is now being called cloud computing

A)internet
B)softwares
C)web service
D)all of the mentioned

Answer 2

internet

Question 3

Which of the following can be identified as cloud

A)web applications
B)intranet
C)hadoop
D)all of the mentioned

Answer 3

hadoop

Question 4

Which of the following is the deployment model?

A)public
B)private
C)hybrid
D)all of the mentioned

Question 5

Which of the following is best known service model?

A)saas
B)iaas
C)paas
D)all of the mentioned

Question 6

Which of the following is the highest degree of integration in cloud computing?

A)saas
B)iaas
C)paas
D)all of the mentioned

Question 7

Which of the architectural layer is used as a front end in cloud computing?

A)client
B)cloud
C)soft
D)all of the mentioned

Question 8

Which of the following benefit is provided by the PaaS service provider

A)a larger pool of qualified developers
B)more reliable operation
C)a logical design methodology
D)all of the mentioned

Question 9

Communication between services is done widely using_________    protocol

A)rest
B)soap
C)restful
D)none of the mentioned

Question 10

Which of the following provider rely on the virtual machine technology to deliver servers?

A)caas
B)aaas
C)paas
D)iaas

Question 11

Which of the following component is called hypervisor?

A)vgm
B)vmc
C)vmm
D)all of the mentioned

Question 12

Applications such as a Web server or database server that can run on a virtual machine image are referred to as__________

A)virtual server
B)virtual appliances
C)machine imaging
D)all of the mentioned

Question 13

Amazon Machine Images are virtual appliances that have been packaged to run on the grid of__________    nodes.

A)ben
B)xen
C)ken
D)zen

Question 14

___________    is a CPU emulator and virtual machine monitor

A)imaging
B)parallels
C)qemu
D)none of the mentioned

Question 15

The source of HDFS architecture in Hadoop originated as

A)google distributed filesystem
B)yahoo distributed filesystem
C)facebook distributed filesystem
D)amazon s3 storage

Question 16

What is HDFS?

A)storage layer
B)batch processing engine
C)resource management layer
D)all of the above

Question 17

Which among the following command is used to copy a directory from one node to another in HDFS?

A)rcp
B)distcp
C)dcp
D)drcp

Question 18

Which utility is used for checking the health of an HDFS file system?

A)fsck
B)fchk
C)fsch
D)fcks

Question 19

Which among the following is the correct statement

A)datanode manage file system namespace
B)namenode stores metadata
C)namenode stores actual data
D)all of the above

Question 20

What is default replication factor?

A)1
B)2
C)3
D)5

Question 21

The namenode knows that the data node is active using a mechanism known as

A)active pulse
B)data pulse
C)heartbeats
D)h-signal

Question 22

What is the default size of HDFS Data Block?

A)16mb
B)32mb
C)64mb
D)128mb

Question 23

What is HDFS Block in Hadoop?

A)it is the logical representation of data
B)it is the physical representation of data
C)both the above
D)none of the above

Question 24

Which of the following is the correct statement?

A)datanode is the slave/worker node and holds the user data in the form of data blocks
B)each incoming file is broken into 32 mb by defaul
C)namenode stores user data in the form of data blocks
D)none of the above

Question 25

The need for data replication can arise in various scenarios like

A)replication factor is changed
B)datanode goes down
C)data blocks get corrupted
D)all of the above