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| Cloud Computing |
Cloud Computing Interview Questions
1) What is cloud computing? What are the advantages of using cloud computing?
Cloud Computing:
In the simplest terms, cloud computing means
storing and accessing data and programs over the Internet instead of your computer's hard
drive. The cloud is just a metaphor for the Internet.
The advantages
of using cloud computing are
1.
Data
backup and storage of data
2.
Powerful
server capabilities
3.
SaaS
( Software as a service)
4.
Information
technology sandboxing capabilities
5.
Increase
in productivity
6.
Cost
effective & Time saving
2) Mention platforms which are used for
large scale cloud computing?
The platforms
that are used for large scale cloud computing are
1.
Apache
Hadoop
2.
MapReduce
3) Explain different models for
deployment in cloud computing?
The different
deployment models in cloud computing are
1. Private Cloud
2. Public Cloud
3. Community Cloud
4. Hybrid Cloud
4) What is the difference in cloud
computing and computing for mobiles?
Mobile
computing uses the same concept as cloud computing. Cloud computing
becomes active with the data with the help of internet rather than individual
device. It provides users with the data which they have to retrieve on
demand. In mobile, the applications runs on the remote server and gives
user the access for storage and manage.
5) How user can gain from utility
computing?
Utility
computing allows the user to pay only for what they are using. It is a plug-in
managed by an organization which decides what type of services has to be
deployed from the cloud.
Most
organizations prefer hybrid strategy.
6) For a transport in cloud how you
can secure your data?
To secure your
data while transporting them from one place to another, check that there is no
leak with the encryption key implemented with the data you are sending.
7) What are the security aspects provided
with cloud?
1.
Identity
management: It authorizes the application services
2.
Access
control: permission has to be provided to the users so that they can control
the access of another user who is entering into the cloud environment.
3.
Authentication
and Authorization: Allows only the authorized and authenticated user only to
access the data and applications
8) List out different layers which define
cloud architecture?
The different
layers used by cloud architecture are
1.
CLC
or Cloud Controller
2.
Walrus
3.
Cluster
Controller
4.
SC
or Storage Controller
5.
NC
or Node Controller
9) What are system integrators in Cloud
Computing?
In Cloud
Computing, systems integrator provides the strategy of the complicated process
used to design a cloud platform. Integrator allows to create more accurate
hybrid and private cloud network, as integrators have all the knowledge
about the data center creation.
10) What is “ EUCALYPTUS” stands for?
“ EUCALYPTUS”
stands for Elastic Utility Computing Architecture For Linking Your Programs To
Useful Systems”
11) Explain what is the use of
“EUCALYPTUS” in cloud computing?
“Eucalyptus”
is an open source software infrastructure in cloud computing, which is used to
implement clusters in cloud computing platform. It is used to build public,
hybrid and private clouds. It has the ability to produce your own data center
into a private cloud and allows you to use its functionality to many other
organizations.
12) What is the requirement of
virtualization platform in implementing cloud?
The
requirement of virtualization platform in implementing cloud is to
1.
Manage
the service level policies
2.
Cloud
Operating System
3.
Virtualization
platforms helps to keep the backend level and user level concepts different
from each other
13) Before going for cloud computing
platform what are the essential things to be taken in concern by users?
1. Compliance
2. Loss of data
3. Data storage
4. Business continuity
5. Uptime
6. Data integrity in cloud computing
14) Mention some open source cloud
computing platform databases?
The open
source cloud computing platform databases are
1. MongoDB
2. CouchDB
3. LucidDB
15) What are the security laws which are
implemented to secure data in a cloud ?
The security
laws which are implemented to secure data in cloud are
1. Processing: Control the data that is
being processed correctly and completely in an application
2. File: It manages and control the data
being manipulated in any of the file
3. Output reconciliation: It
controls the data which has to be reconciled from input to output
4. Input Validation: Control the input
data
5. Security and Backup: It provides
security and backup it also controls the security breaches logs
16) Mention the name of some large cloud
providers and databases?
1. Google bigtable
2. Amazon simpleDB
3. Cloud based SQL
17) Explain the difference between cloud
and traditional datacenters?
1. The cost of the traditional data
center is higher due to heating and hardware/software issues
2. Cloud gets scaled when the demand
increases. Majority of the expenses are spent on the maintenance of the
data centers, while that is not the case with cloud computing
18) Explain what are the different modes
of software as a service (SaaS)?
1. Simple multi-tenancy : In this
each user has independent resources and are different from other users, it is
an efficient mode.
2. Fine grain multi-tenancy: In
this type, the resources can be shared by many but the functionality remains
the same.
19) What is the use of API’s in cloud services?
API’s (
Application Programming Interface) is very useful in cloud platforms
1. It eliminates the need to write the
fully fledged programs
2. It provides the instructions to make
communication between one or more applications
3. It allows easy creation of
applications and link the cloud services with other systems
20) What are the different data centers
deployed for cloud computing?
Cloud
computing consists of different datacenters like
o Containerized Datacenters
o Low Density Datacenters
21) In cloud computing what are the
different layers?
The different
layers of cloud computing are:
1. SaaS: Software as a Service (SaaS), it
provides users access directly to the cloud application without installing
anything on the system.
2. IaaS: Infrastructure as a service, it
provides the infrastructure in terms of hardware like memory, processor speed
etc.
3. PaaS: Platform as a service, it
provides cloud application platform for the developers
22) How important is the platform as a
service?
Platform as a
service or PAAS is an important layer in cloud computing. It provides
application platform for providers. It is responsible for providing
complete virtualization of the infrastructure layer and makes it work like a
single server.
23) What is a cloud service?
Cloud service
is used to build cloud applications using the server in a network through
internet. It provides the facility of using the cloud application without
installing it on the computer. It also reduces the maintenance and support of
the application which are developed using cloud service.
24) List down the three basic clouds in
cloud computing?
1. Professional cloud
2. Personal cloud
3. Performance cloud
25) As a infrastructure as a service what
are the resources that are provided by it?
IAAS (
Infrastructure As A Service) provides virtual and physical resources that are
used to build a cloud. It deals with the complexities of deploying and
maintaining of the services provided by this layer. Here the infrastructure is
the servers, storage and other hardware systems.
26) What are the business benefits
involved in cloud architecture?
The benefits
involved in cloud architecture is
1. Zero infrastructure investment
2. Just in time infrastructure
3. More efficient resource utilization
27) What are the characteristics of cloud
architecture that separates it from traditional one?
The
characteristics that makes cloud architecture above traditional architecture is
1.
According
to the demand cloud architecture provides the hardware requirement
2.
Cloud
architecture is capable of scaling the resource on demand
3.
Cloud
architecture is capable of managing and handling dynamic workloads without
failure
28) Mention what is the difference between
elasticity and scalability in cloud computing?
Scalability is
a characteristics of cloud computing through which increasing workload can be
handled by increasing in proportion the amount of resource capacity.
Whereas, elasticity, is being one of the characteristics that highlights
the concept of commissioning and decommissioning of a large amount of resource
capacity.
29) Mention the services that are provided
by Window Azure Operating System?
Window Azure
provides three core services which are given as
1.
Compute
2.
Storage
3.
Management
30) In cloud architecture what are the
different components that are required?
1.
Cloud
Ingress
2.
Processor
Speed
3.
Cloud
storage services
4.
Cloud
provided services
5.
Intra-cloud
communications
31) In cloud architecture what are the
different phases involved?
1.
Launch
Phase
2.
Monitor
Phase
3.
Shutdown
Phase
4.
Cleanup
Phase
32) List down the basic characteristics of
cloud computing?
1.
Elasticity
and Scalability
2.
Self-service
provisioning and automatic de-provisioning
3.
Standardized
interfaces
4.
Billing
self service based usage model
33) In cloud architecture what are the
building blocks? Also mention in what?
1.
Reference
architecture
2.
Technical
architecture
3.
Deployment
operation architecture
Cloud Architecture Automation and
Performance Transparency
To provide the performance
transparency and automation there are many tools used by cloud
architecture. It allows to manage the cloud architecture and monitor
reports. It also allows them to share the application using the cloud
architecture. Automation is the key component of cloud architecture which
helps to improve the degree of quality.
34) In cloud computing explain the role of performance cloud?
Performance
cloud is useful in transferring maximum amount of data instantly. It is
used by the professionals who work on high performance computing research.
35) Explain hybrid and community cloud?
Hybrid cloud:
It consists of multiple service providers. It is a combination of public and
private cloud features. It is used by the company when they require both
private and public clouds both.
Community
Cloud: This model is quite expensive and is used when the organizations
having common goals and requirements, and are ready to share the benefits of
the cloud service.
36) In cloud what are the optimizing
strategies?
To overcome
the maintenance cost and to optimize the resources ,there is a concept of three
data center in cloud which provides recovery and back-up in case of disaster or
system failure and keeps all the data safe and intact.
37) What is Amazon SQS? And How buffer is
used to Amazon web services?
To communicate
between different connectors Amazon SQS message is used, between various
components of AMAZON, it acts as a communicator.
Use of Amazon Web Services
In order to make system more efficient
against the burst of traffic or load, buffer is used. It synchronizes different
component . The component always receives and processes the request in an
unbalanced way. The balance between different components are managed by
buffer, and makes them work at the same speed to provide faster services.
38)
Mention what is Hypervisor in cloud computing and their types?
Hypervisor is
a Virtual Machine Monitor which manages resources for virtual machines. There
are mainly two types of hypervisors
Type 1: The
guest Vm runs directly over the host hardware, eg Xen, VmWare ESXI
Type 2: The
guest Vm runs over hardware through a host OS, eg Kvm, oracle virtualbox.
