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T+ Lesson 6
| Question | Answer |
|---|---|
| access point | Also called a wireless access point, a Wi-Fi switch. |
| attenuation | A weakening of wireless network signal strength due to interference or distance. |
| backbone | The main pathways of the internet or other large networks, using the fastest and broadest transmission media. |
| bandwidth | The overall rate at which data can be transferred. |
| Bluetooth | A short-range wireless standard used for PANs to connect peripherals to computers. |
| bridge | A network device that connects dissimilar networks so they can share data. |
| broadband modem | A modem that connects a network to an ISP’s internet service. |
| broadband router | A consumer-level router that enables a network to share a broadband internet connection among multiple devices, in addition to functioning as a switch. |
| CAN | Campus area network, a network that’s contained within a cluster of buildings or other nearby spaces. |
| cellular network | A network that provides wireless phone service and internet access to smartphones, based on a mesh of “cells” of antennas and transmitters. |
| channel | In wireless networking, a subset of a frequency band that can be assigned to a wireless network. |
| DHCP server | A server using dynamic host configuration protocol to assign IP addresses dynamically to devices that connect to a network. |
| DNS | Domain name system, a service that translates between IP addresses and domain names. |
| domain name | An internet address expressed in text form, such as Microsoft.com or Purdue.edu. |
| DSL | Digital Subscriber Line, a form of broadband internet access that delivers service via ordinary copper landline telephone circuits. |
| encryption | Encoding data to protect it against unauthorized access. |
| encryption key | The algorithm used to encrypt data before network transmission and decrypt it upon receipt at the destination. |
| Ethernet | A standard for wired networks that uses TCP/IP protocols for communication. |
| fiber optic | (1) A type of high-speed network cable; (2) a type of high-speed internet service that uses fiber optic cables, also known as fiber. |
| firewall | A network security device that protects networked computers from intruders who might attempt to connect using one of its open ports. |
| frequency band | A range of transmission frequencies used in wireless networking, such as 2.4 GHz or 5 GHz. |
| FWA | Fixed Wireless Access, a form of cellular internet service that is deployed to fixed locations, unlike standard cellular service that is designed to be mobile. |
| HTTP/S | Hypertext Transfer Protocol / Secure, a protocol for requesting and displaying web pages. The standard version is HTTP; the secure version is HTTPS. |
| IEEE | The Institute of Electrical and Electronics Engineers, the organization that writes and publishes the specifications for many computer standards, including 802.11 for Wi-Fi networks. |
| IMAP | Internet Mail Access Protocol, a protocol for receiving email. It keeps the messages on the server so the user can access them from multiple devices. |
| IP address | Internet Protocol address, the software-defined address by which a device is uniquely identified on a network. |
| IPv4 | IP version 4, for decades the standard way of expressing IP addresses, gradually being replaced by IPv6. |
| IPv6 | The modern version of the IP addressing standard, gradually being rolled out on the internet and on private networks. |
| ISP | Internet Service Provider, a company that offers Internet access. |
| LAN | Local area network, a network that is contained within a single building or adjacent buildings. |
| latency | The delay between when a network packet is sent and the arrival of that packet at its destination. |
| MAC address | Media Access Control, a globally unique hexadecimal number that identifies a piece of networking hardware. |
| MAN | Metropolitan area network, a network that is contained within a city and its suburbs or outlying areas. |
| MIMO | Multiple Input Multiple Output, a multi-antenna technology that enables wireless access points (802.11n and later) to transfer multiple data streams simultaneously to improve throughput. |
| NAT | Network address translation, a system that enables a router to forward packets out of the network and change the source IP address on them so that they appear to be coming from the router itself rather than an individual device attached to the network. |
| network adapter | A circuit board or built-in feature in a device that enables it to connect to a network. Also called a network interface card (NIC). |
| NFC | Near field communication, a short-range wireless standard used on credit card processing terminals and badge-reading security systems. |
| networking | Connectivity among two or more computers to share data or resources. |
| packet | A software-defined data envelope that encapsulates data. |
| PAN | Personal area network, a network designed for one user to communicate with personal devices. |
| POP3 | Post Office Protocol 3, a protocol for receiving email from a POP3 account. It delivers messages to the client and then deletes them from the server. |
| PSK | Pre-shared key, also called a network key; a password that everyone who connects to the wireless router or WAP uses. |
| protocol | An agreed-on method by which devices communicate with one another. |
| RF | Radio frequency, a transmission medium for wireless networks. |
| RJ-45 | The type of jack used on each end of a UTP cable to connect to a network device. |
| router | A network infrastructure device that functions as a switch and also enables connectivity to other networks. |
| TCP/IP | Transmission control protocol/internet protocol, a suite of protocols used on the internet and on Ethernet and Wi-Fi networks. |
| SMTP | Simple Mail Transfer Protocol, a protocol for sending email. |
| SSID | Service Set ID, the name of a switch or router on the network. |
| switch | A network infrastructure device that provides a central physical connection point for the devices on a LAN. When it’s a wireless network, it’s known as a WAP. |
| TCP/IP model | A conceptual framework for describing the steps in sending and receiving data on a TCP/IP network, consisting of four layers: Application, Transport, Network, and Network Interface. |
| URL | Uniform resource locator, a web address expressed in text form, such as [ |
| UTP | Unshielded twisted pair, the standard type of cable used in Ethernet networks. |
| WAN | Wide area network, a network that’s spread out over a large geographical area, such as between cities or countries. |
| WAP | Wireless access point, a wireless switch. |
| WEP | A very old type of wireless network encryption, now obsolete. It should not be used. |
| Wi-Fi | A standard for wireless networks that uses IEEE 802.11 standards for communication. |
| WPA | A type of encryption for Wi-Fi networks. There are three versions: WPA, WPA2, and WPA3. |
| Zigbee | A special-purpose wireless network standard used to connect smart home appliances to the internet and to each other and to connect computer-enabled equipment in factories. |
| Z-Wave | A special-purpose wireless network standard used to connect smart home appliances to the internet and to each other and to connect computer-enabled equipment in factories. |
Created by:
brvhurt