FUNDAMENTALS OF TELECOMMUNICATIONS SYSTEMS Flashcards
(26 cards)
____________ is the ___________, __________, or ___________ of signs, signals, writing, images, sounds, or information of any nature by wire, radio, optical, or other ______________ systems.
Telecommunication, transmission, emission, reception, electromagnetic
TELECOMMUNICATION SYSTEM uses ________, _______ (visible and infrared), or _______ waves to transmit signals that carry _____ and ______ transmissions.
electricity, light, radio , voice , data
TELECOMMUNICATION SYSTEM functions when a __________ converts sound waves (e.g., those created when a person speaks into a telephone mouthpiece) or data into ______, which travel along wires or through the air before reaching their destination.
transmitter, signals,
When a _______ intercepts the signals, they are
converted back into useful data or ______ waves that
become distinguishable by the human ear and
recognized by brain.
receiver, sound
Is a telecommunications device that functions as a
transmitter and receiver.
Transceiver
_________ is the range between the highest and lowest frequencies of transmission, measured in _______, cycles per second. _______ varies with the type and method of _________. It is a measure of the _________ capacity.
Bandwitdth, hertz, bandwidth, transmission, information
TRANSMISSION FORMATS
________________
-The conversion of useful sound or data into
electrical impulses.
Analog transmission
____________ involves a transmission of a signal that varies in _________ to represent one of two separate states (e.g., on and off or 0 and 1).
• Offers a rapid method of voice and nonvoice transmission.
Digital Transmission, voltage
In ______________, digital signaling in an ________ network, can involve either _______ (on and off) light or a variation in the intensity of the ______ signal.
digital transmission, optical, pulsating, light
Digital transmission over radio systems (microwave, cellular, or satellite) can be accomplished by varying the _________ of the wave.
amplitude
_________________ is a collection of communication equipment and devices that are ___________ so they can communicate in order to share data, hardware, and software or perform an electronic function.
Telecommunications network, interconnected
In telecommunications network, the network includes a series of connecting points called
________ (e.g., a telecommunication terminal such as a telephone receiver or computer) that are interconnected with ______ (wiring).
nodes, cables
Networks can also interconnect with other networks and contain subnetworks. ( T or F)
T
Describes the configuration of a network, including its nodes, connecting cables and equipment.
Topology
Describes the manner in which the cable is run to
individual workstations on the network.
Topology
-Connects each workstation (node) to a SINGLE cable trunk.
-All signals are broadcast to all WORKSTATIONS.
bus topology
If the signal’s address matches that of the computer, the computer processes the signal.
Bus Topology
Analog transmission is capable of transmitting both ________ and _________ messages
voice, nonvoice
( T/F), Voice transmissions are bulky when transmitted in an analog formt, so they cannot be transmitted rapidly.
F - Nonvoice transmissions
( T / F) In a bus topology, if the address does not match, the computer takes no action and the signal will travel no more.
F, signal travels down the bus to the next computer.
In this kind of topology , all workstations (nodes) are connected to a central unit called a hub.
Star Topology
This configuration allows cables to have a ____ link between entrance facilities/ equipment room equipment, telecommunications closet devices, and workstation equipment (e.g., computers, printers, telephone receiver, and so on).
star topology, direct
Cables that extend from the hub to the terminal without splicing or other connections.
home runs
Connects workstation equipment and devices in a POINT-TO-POINT serial manner in an unbroken circular configuration.
ring toplogy
