Data Prefi Flashcards
Data flows in both directions simultaneously and bi-directional both directions
Full-Duplex
converts digital information into tones for transmitting through the phone lines.
Modem
The connection between the modem and the outside world is an analog connection
Analog Connection
the data flows in one direction on the data communication line. examples are the radio and television broadcast
Simplex
It enables your computer to receive calls in your absence.
Auto-answer modem
Modems that support a _______ switch have a built in loudspeaker and microphone for voice communication
voice/data
The amount of data transferred and the transfer rate, amount of use
Data channels
Are special communication channels provided by common carrier It also called Leased Lines,
Data channels
Due to the bandwidth limits on voice channels, the data transfer rate is relatively slow. It talking to someone on the phone uses voice channels
Telecommunication
The connection between the modem and terminal/computer
Digital Connection
The Dial-up connection through a modem using standard telephone lines.
Voice channels
A plug in circuit board that sits inside the computer. It board that sits inside the computer.
Internal Modem
a conversation on walkie-talkies data flow. in both direction but only one direction at a time on the data communication line
Half Duplex
Computer information is stored ______, whereas information transmitted over telephone lines.
digitally
A device that enables a computer to transmit data over, for example telephone and cable lines
Modem
A communication technology with a large coverage radius, so it is a WAN technology naturally because cellular communication replaces the large area system to achieve the technical performance of the original large area system.
Cellular communication
An era of industry applications, a large number of industrial applications in the indoor area, which also makes the mobile communication network begin to enter the original application of WiFi scenarios.
5G
A 802.11ac with a chip that works at frequency 5GHz and can cover both 5GHz and 2.4GHz bands. In addition to being faster, it improves the problem of small wireless signal coverage, but 5GHz has stronger attenuation and less ability to bypass obstacles than 2.4GHz.
5G WiFi
A version supports card insertion, similar to the cell phone card insertion to use the mobile data network anytime and anywhere.
Cellular
A based on mobile phones/devices that use cellular signals to connect to the Internet
Cellular networks
Aversion of the use of the scene is more limited, only using mobile hotspot network.
WiFi
_____ and network function virtualization (NFV) can make the integration of 5G and WiFi with third-party systems easier and faster.
Software-defined networking
A signal source located outside the building must break through the external walls, providing only attenuated signals and reduced system capacity to indoor users, and also causing interference between outdoor base stations.
Cellular System
A communication networks, which require operators to be responsible for the construction, maintenance, and operation of the network, need to invest a lot of money.
Cellular mobile
Can be seen as a converter between the wireless network and the wired network.
Network Subsystem
Between pure WiFi terminals and regular cellular terminals or landlines, which are more common requirements, are more complex.
voice calls
A network terminal devices such as cell phones, smart watches that can be fitted with SIM cards, or some cellular industrial control devices.
Mobile stations
A local area network technology in the communication industry and it belongs to wireless LAN technology. It was introduced to complement wired LANs and is also considered an extension technology to fixed networks.
WiFi technology
Are mobile 2G/3G/4G/5G networks used to access networks over a wide area.
Cellular networks
WiFi technology has evolved over the years, from the original IEEE 802.11b to the current IEEE 802.11ax, which is also known as ,
WiFi 6
