Long Distance Data Transmission Quiz

Small, inexpensive devices connecting to RS232 connectors and using signal voltage for power.

Modems with moderate-high data rates, used for widespread connections, but expensive and complex to maintain.

Modems for high-volume, dedicated computer-to-computer communication with very high data rates.

Modems that establish connections on the PSTN through dialing, with potentially varying circuit quality.

Connections for exclusive use, often guaranteed quality, but can be more complex than dial-up lines.

A communication mode where signals can be sent in one direction at a time, but not both simultaneously.

Communication mode where signals can be sent in both directions at the same time.

The technique of converting digital signals to analog signals for transmission over communication channels.

Methods for testing the integrity of modem connections and isolating transmission problems.

ITU standard for loopback tests incorporated in modems to test telephone circuits and identify transmission issues.

Tests the local modem, connecting chord, and cable.

Tests the entire connection, including the remote modem and carrier.

A feature that generates and checks standard bit patterns for quick communication link fault detection during remote digital loop testing.

Extends digital loop testing from the local modem for fault isolation on the remote side.

A method used to assess the quality of communication links by measuring bit errors.

Methods for testing the end-to-end transmission path of a communication link.

Modems that can transmit and receive data simultaneously at full speed.

Types of communication links used in telecommunications.

A method to achieve full-duplex communication by separating signals into different frequency bands.

A technique to reduce echoing in full-duplex communication lines.

Modems that can transmit data in only one direction.

Modems that operate at slower rates (up to 1800 bps), using FSK modulation and short data blocks with framing bits.

Modems operating at higher rates (up to 28800 bps), using phase modulation or integrated phase/amplitude.

Equalizers that adjust signals based on average attenuation in specific frequencies, typically set in the factory.

Equalizers that can be adjusted for optimal performance on specific telephone lines.

Frequency-Shift Keying, a method to modulate signals using different frequencies for data representation.

Asymmetric DSL, a high-speed Internet access technology using existing phone lines, offering faster downstream speeds than upstream speeds.

The telephone line connecting a residence or business to the central telephone office.

A family of high-speed digital subscriber line technologies for internet access.

The amount of data that can be transmitted over a communication channel per unit of time.

Data transmission from the internet to the user's device.

Data transmission from the user's device to the internet.

Technology enabling high-speed digital communication over existing phone lines.

A type of electrical cable that uses twisted pairs of insulated copper wires for transmission of electrical signals.

Forwards traffic between LANs, working across distances beyond standard Ethernet limits.

A full-duplex, long-reach point-to-point link over copper wire.

A full-duplex, short-reach point-to-point link over copper wire.

Connects copper-based Ethernet equipment to fiber optic links.

Connections are limited to approximately 100 meters using UTP cable.

Greater distance, noise protection, and future bandwidth capacity.

Noise that can corrupt data over copper-based Ethernet links.

XDSL provides different bit rates for upstream (25-55 Mbps) and downstream (typically 3.2 Mbps) communication over distances from 3000 to 10,000 feet.

XDSL can be configured as symmetric (same bandwidth in both directions) or asymmetric (higher bandwidth in one direction).

Asymmetric XDSL is suitable for tasks like web browsing, where data transfer rates are less balanced.

Symmetric XDSL configurations are better suited for applications needing similar speeds in both directions, like video conferencing.

HDSL transmits 2.048 Mbps over two pairs of wires up to 4.2 km.

S-HDSL/SDSL provides high-bit-rate transmission over a single pair of wires, up to 768 Kbps.

ADSL provides up to 6 Mbps in one direction and uses asymmetric bandwidth.

RADSL adjusts data rates based on the quality of the local connection.

VDSL is an asymmetric DSL type, delivering up to 52 Mbps in one direction and 2 Mbps in the other.

A device that extends the range of an Ethernet network beyond its typical 100-meter limit.

Small, inexpensive devices connecting to RS232 connectors, using signal voltage for DC power supply.

Modems for widespread connections, using moderate to high data rates, but expensive and complex to maintain.

Modems for high-volume, dedicated computer-to-computer connections, exceeding high data rates.

Modems that establish point-to-point connections on PSTN using dialing, with variable connection quality.

Connections for exclusive use, often guaranteed quality

A communication mode where signals can be passed in one direction at a time, but not both simultaneously.

Communication mode where signals can be passed in both directions at the same time.

Establish connections using standard telephone network.

Connection for exclusive use.

Communication line with two wires.

Communication lines with four wires, providing separate transmit/receive signals in each direction.

Tests the local modem, connecting chord, and cable.

Tests the entire connection, including the remote modem and carrier.

Asymmetric DSL, offering faster downstream speeds than upstream speeds for internet access using existing phone lines.

The telephone line connecting a residence or business to the central telephone office.

A family of high-speed digital subscriber line (DSL) technologies for internet access.

Technology allowing high-speed digital communication over existing phone lines.

The amount of data that can be transmitted over a communication channel per unit of time.

Data transmission from the internet to the user's device.

Data transmission from the user's device to the internet.

Modems that transmit and receive data simultaneously at full speed.

The process of converting digital signals into analog signals to transmit information over communication channels.

A method of achieving full-duplex communication by splitting signals into different frequency bands.

A technique to reduce echoing in full-duplex communication lines.

Methods for testing and identifying problems in modem connections and transmission.

Modems that transmit data in only one direction.

An ITU standard for loopback tests in modems, used to assess telephone circuit integrity and identify transmission issues.

Modems operating at slower rates (up to 1800 bps), using FSK modulation and short data blocks with framing bits.

Diagnostic test that checks the local modem, connecting cable, and serial connector for connectivity issues.

Tests the entire connection, including the remote modem, carrier, and local modem.

Modems operating at higher rates (up to 28800 bps), using phase modulation or integrated phase/amplitude.

Equalizers that adjust signals based on the average attenuation in specific frequencies, typically set in the factory.

A feature in modems that generates and checks standard bit patterns to quickly identify problems.

Equalizers that can be adjusted for optimal performance on specific telephone lines.

Extends digital loop testing from the local modem to isolate faults on the remote side of the connection.

Frequency-Shift Keying, a method of modulating signals using different frequencies for data representation.

A method for evaluating the quality of communication links by measuring the number of bit errors.

Testing methods that check the end-to-end transmission path of a communication link.

Adjusting the equalizer settings to optimize signal quality, often done after a line replacement or periodically, more frequently for low-quality lines with frequent parameter changes.

An equalizer that automatically adjusts itself to changing line conditions after connection is established, sampling and adapting to the line quality in real-time.

Modems transmitting data at higher rates than asynchronous modems, frequently with protocols and block-based data, accompanied by a clock signal and requiring more intricate transmission controls.

Modems transmitting data at lower rates than synchronous modems, using shorter data blocks and framing bits, and generally less complex transmission protocol.

A type of synchronous modem capable of splitting the channel for multiple consumers at varying speeds using simple or multipoint connections.

A medium that transmits signals as continuous waves, like telephone lines, usually characterized by limited bandwidth.

Signals representing data as discrete values, like 0s and 1s, in the form of square waves – necessary for transmission but easily distorted by analog media.

The process of transforming digital signals into analog signals compatible with transmission over communication channels like telephone lines, transforming square waves into more suitable forms for transmission.

A device that converts digital computer signals into analog signals suitable for transmission over telephone lines, and vice versa.

Modems convert digital data to analog signals for transmission over the PSTN (telephone system), and then demodulate the analog signals back into digital data at the receiving end.

Public Switched Telephone Network - the traditional telephone system.

A continuously varying signal that represents information.

A signal that represents information using discrete values, like 0 or 1.

Converting digital signals into analog signals for transmission over an analog medium.

Converting analog signals back into digital signals at the receiver.

American Standard Code for Information Interchange, a binary coding system used by modems to represent text characters and numbers.

The process of sending data over significant distances, and often involving modems, DSL, and other networking technologies.