Course Packet 01

Question 1

It can be encoded in different forms of energy depending on the transmission media use on the network

Answer 1

data

Question 2

It can be in the form of electrical, light, radio or sound, and each form of energy has different properties and requirements for transmission.

Answer 2

energy

Question 3

It refers communication in two direction, where only one party can communicate at a time.

Answer 3

half-duplex

Question 4

It refers to one way transmission where data travel over a medium

Answer 4

simplex

Question 5

It refers to the transmission of data in two way directions simultaneously.

Answer 5

full-duplex

Question 6

It is a communication pathway that carries data from sender to receiver.

Answer 6

transmission Media

Question 7

a type of transmission media, also known as guided media, uses physical channels or paths to carry signal or messages from the sender to the receiver

Answer 7

wired transmission media

Question 8

It is preferred due to its low resistance to current, which enables signals to travel faster.

Answer 8

copper wire

Question 9

it is the most common form of cable today. it is used to connect telephone subscribers to exchanges and used to interconnect computers on a local area network (LAN)

Answer 9

twisted pair wires

Question 10

a wire that is twisted together for the purpose of cancelling out electromagentic interference (EMI) from external resources

Answer 10

twisted pair wires

Question 11

a service which make use of twisted pair wires. that enables voice conversations and digital transmissions with the aid of a modem. this service is also referred to as PSTN or the public switched telephone network

Answer 11

POTS

Question 12

a digital service that is designed to handle vast volumes of information and has a range of possible applications including high-speed modem communication and remote video conferencing

Answer 12

ISDN

Question 13

a service that offers high-speed digital telephone services to subscriber which provides a faster alternative to conventional analog modems that joins subscriber to high-speed wireless backbon network

Answer 13

ADSL

Question 14

a cable that has no ground shield. it is composed of two conductrs coated with a plastic sheath then twisted around each other.

Answer 14

unshielded twisted pair

Question 15

a cable that are special kind of copper telephone wiring used in some business installations. it composed of an outer covering or shield

Answer 15

shielded twisted pair

Question 16

this cable are more commonly known as the wiring used for cable TV. it permits high-speed data transmission with a minimum of signal distortion because it provides greater protection form interference than twisted pair

Answer 16

coaxial cable

Question 17

this cable is used to transport data as laser generated pulse of light.

Answer 17

fiber optic cable

Question 18

a type of transmission data that uses air as its channel for carrying the signals in waveform. it utilizes signal generation devices from source and destination endpoints

Answer 18

wireless transmission media

Question 19

the transmission of these signals is line of sight, indication that there should be no physical obstacles between the sending and receiving devices.

Answer 19

microwave system

Question 20

satellite systems comprises of ground based transmitter and receiver dishes, with a orbital satellite circuit called responder

Answer 20

orbital satellite transmission

Question 21

it is an earth bound station used in satellite communications of data, voice and video signals, excluding broadcast television.

Answer 21

very small aperture terminal