Section 11: Internet Service Technologies and Cloud Computing

What are Location-Based services?

Location Based services are services that use the geographical location of a device or user to:

Provide relevant information OR functionality.

What is GPS?

The Global Positioning System is a satellite based navigation system that determines a receiver’s geographical location

Using signals transmitted by satellites.

How does GPS determine a devices location?

It uses signals from multiple satellites and the time taken for the signals to arrive to:

1. Calculate distances

2. And determine the receiver’s position

We use the term receiver not device

What is the difference between LBS and GPS

1. GPS determines the geographical location of a receiver using satellites

2. LBS uses location information to provide a service

Does GPS require mobile data or Wi-Fi to determine a location?

No. An application may need internet access for online maps and other services.

Give examples of location based services

1. Google Maps finding nearby restaurants

2. A weather app providing the forecast for your current location.

What is Cloud Computing?

Cloud computing is the delivery of computing services such as:

1. Software

2. Storage

3. And processing power

Over a network, usually the Internet instead of relying entirely on local hardware .

How can cloud computing reduce local hardware requirements?

Remote servers handle some processing and storage, reducing the need for local resource requirements.

Name to cloud services for application use

1. Google Workspace ( G suite)

2. Microsoft 365 (office 365)

How can cloud computing improve collaboration?

Multiple uses can access and edit shared files, often simultaneously

How can cloud computing affect software updates?

Service provides manage updates centrally, reducing users maintenance responsibilities

What is cloud storage?

The storing of data on remote servers managed by a service provider and data is accessible over s network

What is file synchronisation

When changes to synchronised files on devices are reflected on other connected devices

Why is cloud storage not automatically a backup?

Synchronised deletions can affect multiple devices; an independent backup enables separate recovery.

Give Three Advantages of cloud computing

1. Reduced hardware needs

2. Can access software on any device and location

3. Easier collaboration

Give three disadvantages of cloud computing

1. Internet dependence

2. Security and privacy risks

3. Service outages

What is scalability in cloud computing?

Increasing or decreasing computing resources or storage as needs change.

How can cloud computing reduce costs and what is the trade off?

it can reduce hardware costs, but recurring subscriptions and storage fees may accumulate.

What is a key disadvantage of relying on a cloud provider?

1. Service outages

2. Price changes

3. Service termination may affect access to applications and data.

What is a software license?

A legal agreement that specifies how software can be used, including control, permissions and restrictions.

What is cloud licsencing?

Licensing software provided through cloud services, often via a recurring subscription.

What is a perpetual software liscence?

A license that is paid only once and allows indefinite use of a specific software version, subject to its terms.

What is open source licsencing?

A license that allows users access to the source code, providing rights to use, modify and redistribute the software, subject to conditions.

What should users consider about cloud data privacy?

1. Who can access or use the data

2. How the data is protected

3. The providers privacy terms

What happens to cloud data when a subscription ends

1. Access may end

2. Retrieval and deletion depend on the providers terms

What is POPIA?

South Africas Protection of Personal Information Act, which regulates the processing of personal information.