Using The Cloud

Question 1

What is Network Functions Virtualization (NFV)?

Answer 1

Decoupling of network functions from hardware devices

NFV allows for more flexible network management

Question 2

What does NFV allow for in cloud computing?

Answer 2

Flexible deployment and management of networking services

NFV enhances the agility of network service delivery

Question 3

What does NFV reduce the need of?

Answer 3

Dedicated hardware

This leads to cost savings and increased flexibility

Question 4

What does NFV reduce?

Answer 4

Resource utilization and reduces costs

Efficient use of resources is a key benefit of NFV

Question 5

What is a virtual private cloud (VPC)?

Answer 5

An isolated network space within a public cloud

VPCs provide a secure environment for cloud resources

Question 6

How are VPCs designed?

Answer 6

Provides a similar level of segmentation, control, and security as a private data center

This design allows for effective resource management

Question 7

What can users do in their own VPCs hosted within a public cloud?

Answer 7

Define their IP address range, configure subnets, route tables, and network gateways

This level of control mimics traditional data center management

Question 8

What do VPCs allow enterprises to do?

Answer 8

Run their cloud resources in a virtual network

Enterprises can leverage cloud benefits while maintaining control

Question 9

What are network security groups used for?

Answer 9

To control inbound and outbound traffic to cloud resources within a VPC

They act as a security measure for cloud environments

Question 10

How are network security lists used?

Answer 10

Manage and secure network traffic in a cloud environment

They provide additional layers of security

Question 11

What do network security groups and lists provide?

Answer 11

Stateful or stateless traffic filtering on a subnet level within the same or different VPCs

This filtering is essential for maintaining security

Question 12

What do network security groups and lists act as?

Answer 12

A virtual firewall

They help in protecting cloud resources from unauthorized access

Question 13

What does the internet gateway enable?

Answer 13

Internet access for the resources within the VPC

It facilitates communication between VPC and the internet

Question 14

What does a NAT gateway allow?

Answer 14

Allows instances in a private subnet to connect to the internet while preventing an external system connecting directly to them

This is critical for maintaining security in private subnets

Question 15

Why are NAT gateways crucial for instances that require outbound internet access?

Answer 15

For updates

They enable instances to fetch necessary updates securely

Question 16

What do cloud gateways serve as?

Answer 16

An intermediary device or service that connects cloud environments with different networks

They play a crucial role in hybrid cloud setups

Question 17

What can cloud gateways facilitate between dissimilar environments?

Answer 17

Users and applications can securely and efficiently access cloud resources

This enhances the interoperability of cloud services

Question 18

What does cloud connectivity options refer to?

Answer 18

Methods through which data and applications can connect to and interact with cloud environments

These options are vital for effective cloud usage

Question 19

How are these cloud connectivity options crucial when accessing the cloud?

Answer 19

Offer efficient, reliable, and secure access to cloud resources from different locations

They ensure that users can access cloud services effectively

Question 20

What is the private-direct connection to cloud provider?

Answer 20

Dedicated network link between an organization’s on-premises infrastructure and a cloud service provider’s data center

This connection enhances performance and security

Question 21

What does the private-direct connection offer when bypassing the public internet?

Answer 21

Reliability with secure and faster connectivity for accessing cloud services

It significantly reduces latency and improves security

Question 22

Where would private-direct connections be ideal?

Answer 22

For business with strict performance and security requirements for their cloud-based applications and data

These connections are suited for industries like finance and healthcare

Question 23

What are some cloud traits?

Answer 23

Multitenancy, elasticity, and scalability

These traits define the core functionalities and benefits of cloud computing.

Question 24

What does multitenancy mean?

Answer 24

Public and community operate on shared resources

This allows multiple customers to share the same infrastructure while maintaining data isolation.

Question 25

How is elasticity used for resources in a cloud environment?

Answer 25

Resources can be allocated and relocated automatically ## Footnote This allows for dynamic scaling based on demand.

Question 26

What is meant by 'Pay on what you use' in cloud services?

Answer 26

Customers are billed based on their actual resource usage ## Footnote This model enhances cost efficiency for users.

Question 27

How can networks be scalable in cloud environments?

Answer 27

CPU cores, RAM, storage, bandwidth, and servers can be increased as needed ## Footnote Scalability ensures that resources can adjust to varying workloads.

Question 28

What do deployment models in networking and cloud computing refer to?

Answer 28

Specific configurations and environments in which technology services and infrastructure are implemented ## Footnote Deployment models define how cloud services are deployed, whether public, private, community, or hybrid.

Question 29

What does the deployment method of public cloud offer?

Answer 29

Multitenant third-party services that anyone can use ## Footnote Public clouds are accessible to the general public and typically hosted by third-party providers.

Question 30

What do organizations share within a public cloud?

Answer 30

Hardware resources are shared with other different organizations ## Footnote This sharing can lead to cost savings but also raises security concerns.

Question 31

What are the two features of the cost and security of the public cloud?

Answer 31

Most affordable and least secure ## Footnote Public clouds are generally cost-effective but may not provide the same level of security as private clouds.

Question 32

What do private cloud options differ from a public cloud?

Answer 32

Single tenant service where no hardware resources are shared among organizations ## Footnote Private clouds are tailored to a single organization, offering more control and security.

Question 33

Which cloud deployment model is most expensive and secure?

Answer 33

Private cloud ## Footnote The private cloud model often involves higher costs due to dedicated resources and infrastructure.

Question 34

Who can host a private cloud?

Answer 34

The company that owns it with its own hardware and data centers or the cloud provider ## Footnote Private clouds can be managed internally or outsourced to a cloud provider.

Question 35

What do organizations in a community cloud share?

Answer 35

Interests such as mission, policy, and compliance considerations ## Footnote Community clouds are designed for specific organizations with shared concerns.

Question 36

Who manages the community clouds?

Answer 36

The organization itself or a third-party ## Footnote Management can vary depending on the agreements and capabilities of the organizations involved.

Question 37

What is a hybrid cloud?

Answer 37

A combination of any cloud with services also being hosted on-premise ## Footnote Hybrid clouds provide flexibility by combining public and private cloud resources.

Question 38

How are these hybrid clouds bounded together?

Answer 38

Standardized or proprietary technologies ## Footnote Integration of different cloud environments relies on compatible technologies.

Question 39

What do hybrid clouds enable?

Answer 39

Data and application portability ## Footnote Hybrid clouds allow organizations to move data and applications between on-premise and cloud environments.

Question 40

What are service models?

Answer 40

Various types of services ## Footnote Service models define the different ways services are delivered in cloud computing.

Question 41

What does Software as a Service deliver to users?

Answer 41

Access software applications on a subscription basis ## Footnote SaaS allows users to use applications hosted on the cloud without installation.

Question 42

What benefits can SaaS provide to the user?

Answer 42

Convenience and cost savings with software licensing and infrastructure ## Footnote Users benefit from reduced costs and simplified software management.

Question 43

What does Infrastructure as a Service (IaaS) provide over the internet?

Answer 43

Users can rent virtualized computing resources like; servers, storage space, and networking capabilities ## Footnote IaaS offers scalable resources that can be adjusted based on demand.

Question 44

Why is IaaS ideal for some businesses?

Answer 44

Flexible and scalable without capital expenditure or physical hardware ## Footnote Businesses can scale resources up or down as needed without large upfront investments.

Question 45

What can Platform as a Service (PaaS) offer?

Answer 45

Cloud platform and tools to allow developers to build, test, deploy, and manage applications without having to worry about the underlying infrastructure ## Footnote PaaS simplifies application development by providing necessary tools and environments.

Question 46

What does the PaaS model provide?

Answer 46

Development environment, application hosting, and a deployment platform ## Footnote PaaS facilitates the entire application lifecycle from development to deployment.

Question 47

What does PaaS reduce?

Answer 47

Complexity of managing hardware and software layers ## Footnote This allows developers to focus on coding rather than infrastructure management.