Netacad Chapter 1: Explore the Network

What are two characteristics of a scalable network?

1. grows in size without impacting existing users 2. suitable for modular devices that allow for expansion

BYOD Concept

A BYOD environment requires an organization to accommodate a variety of devices and access methods. Personal devices, which are not under company control, may be involved, so security is critical. Onsite hardware costs will be reduced, allowing a business to focus on delivering collaboration tools and other software to BYOD users.

Intranet

A private connection of LANs and WANs that belongs to an organization, and is designed to be accessible only by the members and employees of the organization, or others with authorization

Extranet

Allows organizations to do business directly with other external organizations by allowing them access to part of the internal network

How does BYOD change the way in which businesses implement networks?​

BYOD provides flexibility in where and how users can access network resources.

Internet Service Provider (ISP)

It is an organization that enables individuals and businesses to connect to the Internet

Quality of Service (QoS)

Measures taken to ensure that network traffic requiring higher throughput receives the required network resources

ARPANET (Advanced Research Projects Agency Network)

Project that started the development of inter-network connections using TCP/IP that has evolved into the Internet today

Security

Protecting networks and data from theft, alteration, or destruction

Examples of Intermediary Devices

Routers Switches Access Points

Spyware

Software that is installed on a computer secretly collecting data about websites that were visited by users of the computer Software that is installed on a network device and that collects information.

Scalability

The ability of the network to grow to accommodate new requirements

Integrity

The completeness of something and is generally not used as a characteristic of networks in the same way as the other terms

Converged Network

Unifies different network services, such as streaming video, voice, and data, on a single platform and within a single infrastructure

Virtual Private Network (VPN)

Used to provide secure access to remote workers

Examples of End Devices

VOIP Phone Security Camera TelePresences Endpoint

Internal Security Threats

Weak or exposed passwords, lost or stolen devices, and malicious employees

In which scenario would the use of a WISP be recommended?

a farm in a rural area without wired broadband access

SDSL (Symmetric Digital Subscriber Line)

a format of DSL that provides business class service featuring the same speeds for uploading and downloading

WAN (Wide Area Network)

a network infrastructure that provides access to other networks over a large geographic area

Fault Tolerance

a very short interruption of network services network which allows it to quickly respond to failures of network devices, media, or services

Cellular

access to the internet is provided by the cell phone network provides access in areas that otherwise have no other form of access

Metro Ethernet

dedicated business class of service that connects organizations to the internet via copper or fiber cable at speeds up to 10Gb/s

WISPs (Wireless Internet Service Providers) Concept

found in rural areas where DSL or cable access is not available. A dish or antenna on the property of the subscriber connects wirelessly to a WISP transmitter, eliminating the need for physical cabling outside the building.

LAN (Local Area Network)

provides access in a small geographic area

SAN (Storage Area Network)

provides data storage, retrieval, and replication

Satellite

requires a clear line of sight and is affected by trees and other obstructions

MAN (Metropolitan Area Network)

spans a limited physical area such as a city

DSL (Digital Subscriber Line)

uses a high-speed modem to split the existing telephone line into voice, download, and upload signal channels

Cable

uses the same coaxial or fiber optic cable that carries television signals into the home to provide Internet access.