E004 - S2, L3: Networks, Databases, and Cloud Scenario Based Flashcards

Networks enable customer management systems, inventory tracking, and cloud-based tools that improve efficiency.

Business applications

Employees use networks to exchange emails, participate in video calls, and work on shared documents in real time.

Collaboration and communication

By connecting databases, cloud platforms, and software applications, networks streamline processes and ensure access to accurate, real-time information.

Operational efficiency

Cloud-based networks provide employees with secure access to company resources from anywhere, supporting flexible and hybrid work environments.

Remote access

connects multiple devices within a local network, ensuring fast and efficient data transfer

Switch

directs data between different networks and provides internet access

Router

converts digital data into signals for internet access, enabling communication with an internet service provider (ISP)

Modem

a hardware component that allows a computer or device to connect to a network via wired or wireless communication

Network interface card (NIC)

Used in office networks to connect computers, printers, and other devices

Switches

Used in homes and businesses to provide internet access and route traffic

Routers

Used by internet service providers to connect customers to the internet

Modem

Installed in computers, printers, and smartphones to allow network access

Network Interface Card (NIC)

Directs data between networks and connects a LAN to the internet

Router

Connects devices inside a LAN and manages local data traffic

Switch

Converts digital signals to/from analog signals for internet access

Modem

Allows a device to join a network via wired or wireless communication

Network Interface Card

A central node (hub or switch) connects all devices in the network. It is easy to manage and scales well for growing networks.

Star topology

Every device is directly connected to each other. This topology provides high redundancy and reliability, ensuring that the failure of one connection does not disrupt the entire network.

Mesh topology

A network that connects devices within a limited area, such as a home, office or campus

Local Area Network (LAN)

A network that covers a large geographical area, often connecting multiple LANs

Wide Area Network (WAN)

A logical grouping of devices within a LAN, configured to behave as if they are on separate networks, even if physically located on the same network.

Virtual Local Area Network (VLAN)

A secure connection over the internet that allows remote users to connect to a private network, providing privacy and security

Virtual Private Network (VPN)

A type of network that uses satellites to provide internet or communication services, especially in remote access.

Satellite Network

A wireless network used for mobile communication, connecting mobile phones and data services through radio towers.

Cellular

Provides highly stable connections with minimal interference

Wired Communication

Supports user mobility without requiring physical cables

Wireless Communication

Often used for data centers and backbone connections that need high bandwidth

Wired Communication

Uses radio waves or similar signals to connect laptops, phones, and tablets

Wireless Communication

Can require more cabling and installation effort.

Wired Communication

More susceptible to signal loss from physical obstacles or radio interference

Wireless Communication

______________ is used for transferring web pages and data on the internet. For example, when you access a website, ______________ retrieves and displays the content in your browser.

HTTP (hypertext transfer protocol)

______________ facilitates the sending of emails between servers. It is used for email delivery from one server to another.

SMTP (simple mail transfer protocol)

______________ is used for transferring files between computers over a network. It allows users to upload or download files from servers.

FTP (file transfer protocol)

This consists of numbers, letters, characters, and symbols. It is commonly used in text documents, databases, and programming languages.

Alphanumeric data

This represents sound or audio signals and is frequently used in voice recordings, digital assistants, and music streaming.

Audio data

This comprises visual content such as pictures and graphics and is essential in photography, medical imaging, and facial recognition technology.

Image data

This represents moving visual content combined with audio. It is widely used in video conferencing, online streaming, and digital marketing.

Video data

The fundamental structure for storing data in rows and columns

Tables

Connections between tables to link related data

Relationships

Unique identifiers that ensure data integrity and relationships

Keys

Commands to retrieve and manipulate data

Queries

The process of organizing data to reduce redundancy

Normalization

Cloud services are provided over the internet and shared among multiple users. Examples include Amazon Web Services (AWS) and Microsoft Azure.

Public cloud

Resources are dedicated to a single organization, offering enhanced control and security. This model is ideal for businesses handling sensitive data.

Private cloud

A combination of public and private cloud services, allowing organizations to balance flexibility and security. Businesses can store critical data in a private cloud while utilizing the scalability of the public cloud.

Hybrid cloud

A small IT startup that develops mobile applications chooses a _______________ cloud provider for hosting its development and testing environments.

_______________ cloud is ideal when flexibility, speed, and cost efficiency are more important than strict data control.

Public Cloud

A regional healthcare network moves its patient records and internal applications to a _______________ cloud environment managed exclusively for its organization.

_______________ cloud is chosen when security, compliance, and data control are top priorities.

Private Cloud

A national retail company adopts a _______________cloud approach to support its online store and in-store operations.

_______________cloud is used when a business needs the strengths of both public and private cloud environments.

Hybrid Cloud

Provides virtualized computing resources over the internet, such as servers, storage, and networking, without the need to manage physical hardware

Examples: Amazon Web Services (AWS), Microsoft Azure

Infrastructure as a Service (IaaS)

Offers a platform that allows customers to develop, run, and manage applications without dealing with the infrastructure needed for development

Examples: Google App Engine, Microsoft Azure App Services

Platform as a Service (PaaS)

Delivers a virtual desktop environment to users over the internet, allowing remote access to a full desktop experience

Examples: Amazon WorkSpaces, VMware Horizon Cloud

Desktop as a Service (DaaS)

Delivers internet-based access to applications like word processors or email clients

Software as a Service (SaaS)

Offers virtual computing resources like servers and storage through the cloud

Infrastructure as a Service (IaaS)

Provides cloud-based environments for developers to build, test, and deploy applications

Platform as a Service (PaaS)

Supplies a complete virtual desktop environment accessible from any device

Desktop as a Service (DaaS)