5.1 TELECOMMUNICATION SYSTEMS PART 1

Question 1

Used to convey messages from about 700 B.C.E.

Answer 1

Carrier pigeons

Question 2

It is where the first long-distance communication systems were based on (e.g. drums and horns, smoke signals and beacon fires).

Answer 2

Signals of sound and light

Question 3

alerted the British of the arrival of the Spanish Armada in 1588 C.E.

Answer 3

Signal fires

Question 4

Signal fires alerted the British of the arrival of the ____________ in _______ C.E.

Answer 4

Spanish Armada, 1588

Question 5

They used rockets as signals to warn of an imminent attack on the Great Wall.

Answer 5

The Chinese! CHING CHONG MADAFAKA!

Question 6

communicated by covering and uncovering a bonfire with a blanket to produce smoke signals or by beating drums.

Answer 6

Native Americans

Question 7

Used in traditional long-distance communication until almost 1800

Answer 7

Horse-mounted dispatch riders

Question 8

_____________________ Developed an optical telegraph (semaphore) system of stations built on rooftops or towers that were visible from a great distance in _______.

Answer 8

Frenchman Claude Chappe, 1793

Question 9

It consisted of a column-like tower with a moveable beam. Attached to the beam were two moveable arms. The beam and arms were swiveled with ropes, conveying different signal patterns representing upper- and lowercase letters, punctuation marks, and numbers.

Answer 9

Semaphore Stations

Question 10

The semaphore station system allowed the French to send a concise message over _____ miles (____ km) in less than 5 minutes, as long as visibility was good.

Answer 10

100 miles, 160 kilometers

Question 11

He developed another type of optical telegraph system with ten collapsible iron shutters, which, when placed in various positions, formed combinations of numbers that were translated into letters, words, or phrases.

Answer 11

Swere A.N. Edelcrantz

Question 12

He transmitted the first practical electrical signal in 1830 by sending electricity through a long set of wires to produce electromagnetism that was used to ring a bell.

Answer 12

Joseph Henry

Question 13

He patented the first functional electrical communication system in 1831: the electric telegraph with its system of electrical impulses identified as dots and dashes that eventually became known as Morse Code.

Answer 13

Samuel Morse

Question 14

The first message sent by electric telegraph

Answer 14

“What hath God wrought”

Question 15

The first message sent by the electric telegraph was from the Supreme Court Room in the U.S. Capitol to the railway depot at Baltimore on ___________ (date)

Answer 15

May 24, 1844

Question 16

In 1861, there were over _____ telegraph offices in operation across America and the East and West coasts were connected.

Answer 16

2000

Question 17

In what year was the first transatlantic cable laid, connecting England and the United States.

Answer 17

1867

Question 18

Invented an electrical speech machine that transmitted voice over wires and became known as the telephone, on March 10, 1876, in Boston, Massachusetts.

Answer 18

Alexander Graham Bell

Question 19

When and where did Alexander Graham Bell invent the telephone?

Answer 19

March 10, 1876
Boston Massachusetts

Question 20

The first words accidentally spoken into the telephone.

Answer 20

“Mr. Watson, come here, I want you!”

Question 21

In 1880, the first telephone company, __________, was formed and over 30,000 phones were in use.

Answer 21

American Bell

Question 22

Within 40 years after the first telephone company was formed (about 1920), over _______________ American Bell System telephones were in service.

Answer 22

ten million

Question 23

Italian inventor who demonstrated the first radio transmission in 1895 that was received out of a line of sight (about 2 miles) on the grounds of his family estate in Italy.

Answer 23

Gugliemo Marconi

Question 24

Six years after Marconi demonstrated the first radio transmission in Newfoundland Canada, Marconi’s radio received a weak signal that was sent across the Atlantic Ocean by one of his associates in Cornwall, England. The signal was an “__” sent in Morse Code format, “dot, dot, dot.”

Answer 24

S

Question 25

Less than __ years after the telephone was invented, transatlantic communications from New York to London became operational with signals transmitted by _____ waves.

Answer 25

50 years
radio

Question 26

Italian physicist who invented a pantelegraph in 1865 for transmitting pictures, the first commercial fax system.

Answer 26

Giovanni Caselli

Question 27

The first transmission of pictures over telephone wires was publicly demonstrated on?

Answer 27

May 19, 1924

Question 28

On ___________, John Logie Baird of Scotland gave the first public demonstration of a mechanical television with images of living human faces, not just outlines or silhouettes.

Answer 28

January 23, 1926

Question 29

is the transmission, emission, or reception of signs, signals, writing, images, sounds, or information of any nature by wire, radio, optical, or other electromagnetic systems.

Answer 29

Telecommunication

Question 30

Uses electricity, light (visible and infrared), or radio waves to transmit signals that carry voice and data transmissions.

Answer 30

Telecommunication system/s

Question 31

Functions when a transmitter converts sound waves (e.g., those created when a person speaks into a telephone mouthpiece) or data into signals, which travel along wires or through the air before reaching their destination.

Answer 31

Telecommunication system/s

Question 32

Is a telecommunications device that functions as a transmitter and receiver.

Answer 32

Transceiver

Question 33

Is the range between the highest and lowest frequencies of transmission, measured in hertz (Hz), cycles per second. It is a measure of the information capacity.

Answer 33

Bandwidth

Question 34

The conversion of useful sound or data into electrical impulses.

Answer 34

Analog transmission

Question 35

Capable of transmitting both voice and nonvoice messages (e.g., telex, telegrams, data).

Answer 35

Analog transmission

Question 36

_________ transmissions are bulky when transmitted in an analog format, so they cannot be transmitted rapidly.

Answer 36

Nonvoice

Question 37

Involves a transmission of a signal that varies in voltage to represent one of two separate states (e.g., on and off or 0 and 1).

Answer 37

Digital transmission

Question 38

Offers a rapid method of voice and nonvoice transmission

Answer 38

Digital transmission

Question 39

_____________ in an optical network can involve either pulsating (on and off) light or a variation in the intensity of the light signal.

Answer 39

Digital signaling

Question 40

Digital transmission over radio systems (microwave, cellular, or satellite) can be accomplished by varying the ___________ of the wave.

Answer 40

Amplitude

Question 41

Is a collection of communication equipment and devices that are interconnected so they can communicate in order to share data, hardware, and software to perform an electronic function.

Answer 41

Telecommunications network

Question 42

A telecommunications network includes a series of connecting points called _____ that are interconnected with cables (wiring).

Answer 42

nodes

Question 43

Networks can also interconnect with other networks and contain ____________.

Answer 43

subnetworks