Computers - CH. 9

Personal Area Network (PAN)

A LAN that consists of devices connected by Bluetooth

Wireless Local Area Network (WLAN)

A network that uses Wi-Fi to transmit data

Cellular Network

A network that uses cell towers to transmit voice and data over large distances

What are the wireless network types ?

Bluetooth Personal Area Networks (PAN), Wi-Fi Wireless LANs (WLAN), and Cellular Networks

Virtual Private Network (VPN)

Creates a private network through a public network (Internet) that allows remote users to access a LAN securely and such networks use encryption to ensure data security

What do firewalls examine ?

Data packets as they enter or leave your network

Protocol

Defines the rules for communication for devices

How should individual computers on the network be protected ?

Firewalls, Antivirus, and Animalware Software

Systems on the network must be what ?

Kept up to date and secure

Modem

Most often used for dial-up Internet access and it is usually the first device on a network that connects to the Internet

What does each device need in order to connect to a network ?

Network Adapter

TCP/IP Protocol Stack

Runs on the Internet and on most LANs

Ethernet

The most commonly used standard that defines the way data is transmitted over a LAN

Client

A computer that connects to, or requests services from, another computer called a server, users log in to the network instead of their local computers, and are granted access to resources based on that login

Wireless Access Point (WAP)

A device that allows many wireless devices to join a network much like a switch

Firewall

A device that blocks unauthorized access to a network

Switch

A device that connects multiple devices on a LAN and uses address information to send data packets only to the port that the appropriate device is connected to

Router

A devices that connects two or more networks together and uses address information to route the data packets it receives to the correct locations

Server

A multiuser computer system that runs a network operating system (NOS) and provides services, such as Internet access, email, or file and print services, to client systems

Network Operating System (NOS)

A multiuser operating system that controls the software and hardware that runs on a network

Storage Area Network (SAN)

A network between the data storage devices and the servers on a network that makes the data accessible to all servers in the SAN

Domain

A network composed of a group of clients and servers under the control of one central server

Ad Hoc Network

A network created when two wireless devices connect to each other directly

Peer-to-Peer Network (P2P)

A network in which all computers are considered equal, belong to the same workgroup, each device can share its resources with every other device, and there's no centralized authority

Network Adapter

A network interface card, or communication device, used to establish a connection with a network, it may be onboard, an expansion card, or a USB device, and may be wired or wireless

Campus Area Network (CAN)

A network that consists of multiple LANs located in the same location connected to each other using routers

Metropolitan Area Network (MAN)

A network that covers a single geographic area

Local Area Network (LAN)

A network that has all connected devices or nodes located in the same physical location

Client-Server Network

A network that has at least one server at its center that provides centralized management, resources, and security

Wide Area Network (WAN)

A network that spans multiple locations and connects multiple LANs over dedicated lines using routers

Homegroup

A simple way to network a group of Windows computers that are all on the same home network

Bluetooth

A technology designed to connect peripherals wirelessly at short ranges

Infrastructure Wireless Network

A wireless network in which devices connect through a wireless access point

Server Software

Allows clients to communicate with the server to share resources, run applications, and send messages

Standards

Specifications that have been defined by an industry organization which ensures that equipment that is made by different companies will be able to work together

What should usernames have ?

Strong passwords that are hard to crack and each user should be granted access only to what they need

Optical Network Terminal (ONT)

The device that connects a LAN to a fiber network and it is usually the first device on a network that connects to the Internet

Workgroup

The devices in a peer-to-peer network

Topology

The physical layout of a computer network

Wardriving

The practice of driving around and locating open wireless access points

Internet Protocol (IP)

The protocol responsible for addressing and routing packets to their destination

Transmission Control Protocol (TCP)

The protocol responsible for assuring that data packets are transmitted reliably on a network

Network Resource

The software, hardware, or files shared on a network

IEEE 802.11

The standards that define the way data is transmitted over a Wi-Fi network

Computer Network

Two or more computers that share resources, such as software, hardware, or files

Piggybacking

Using an open wireless network to access the Internet without permission