Podcast
Questions and Answers
Who proposed a communication line between villages using 26 parallel wires to represent each letter of the alphabet?
Who proposed a communication line between villages using 26 parallel wires to represent each letter of the alphabet?
- Guglielmo Marconi
- Carl Friedrich Gauss (correct)
- Alexander Graham Bell
- Samuel Morse
What did Samuel Morse contribute to the field of data communications?
What did Samuel Morse contribute to the field of data communications?
- The first wireless telegraph
- The invention of the telephone
- The first successful data communication system using binary coded signals (correct)
- The development of geostationary satellites
Which satellite was the first geostationary communications satellite?
Which satellite was the first geostationary communications satellite?
- Sputnik-1
- Syncom-2 (correct)
- Maya-1
- Syncom-1
Which of the following correctly identifies the first successful data communication invention?
Which of the following correctly identifies the first successful data communication invention?
What was the primary purpose of the computer network as defined in the content?
What was the primary purpose of the computer network as defined in the content?
Which notable achievement is associated with the launch of Sputnik-1?
Which notable achievement is associated with the launch of Sputnik-1?
Which individual is credited with founding the American Telephone and Telegraph Company?
Which individual is credited with founding the American Telephone and Telegraph Company?
What are protocols in the context of a computer network?
What are protocols in the context of a computer network?
Which type of network is primarily confined to one building or cluster of buildings?
Which type of network is primarily confined to one building or cluster of buildings?
Which network model allows all computers to share their resources with each other?
Which network model allows all computers to share their resources with each other?
What is a key characteristic of a Physical Mesh Topology?
What is a key characteristic of a Physical Mesh Topology?
Which classification of computer networks includes connections between two or more countries?
Which classification of computer networks includes connections between two or more countries?
Which of the following is a disadvantage of Physical Mesh Topology?
Which of the following is a disadvantage of Physical Mesh Topology?
In a network where a server provides resources and clients make requests, what role does the server play?
In a network where a server provides resources and clients make requests, what role does the server play?
Which type of network spans multiple cities and typically utilizes facilities from telecom providers?
Which type of network spans multiple cities and typically utilizes facilities from telecom providers?
What describes the Logical Topology of a network?
What describes the Logical Topology of a network?
What is a significant disadvantage of the physical star topology?
What is a significant disadvantage of the physical star topology?
Which of the following is a benefit of the physical bus topology?
Which of the following is a benefit of the physical bus topology?
What is a key characteristic of the physical ring topology?
What is a key characteristic of the physical ring topology?
Which statement accurately describes the physical tree topology?
Which statement accurately describes the physical tree topology?
What is a notable disadvantage of the physical ring topology?
What is a notable disadvantage of the physical ring topology?
What distinguishes a hybrid topology compared to traditional topologies?
What distinguishes a hybrid topology compared to traditional topologies?
Which of the following is a weakness of the physical bus topology?
Which of the following is a weakness of the physical bus topology?
What is a primary advantage of using physical star topology over mesh topology?
What is a primary advantage of using physical star topology over mesh topology?
Flashcards
Telegraph
Telegraph
A method of communication that uses electrical signals to transmit information.
1753 Proposal
1753 Proposal
An early proposal for a communication line between villages, using 26 parallel wires representing each letter.
Samuel Finley Breese Morse
Samuel Finley Breese Morse
An American painter and inventor, who contributed to the development of the telegraph and Morse code.
Alexander Graham Bell
Alexander Graham Bell
Signup and view all the flashcards
Guglielmo Marconi
Guglielmo Marconi
Signup and view all the flashcards
Computer Network
Computer Network
Signup and view all the flashcards
Protocols
Protocols
Signup and view all the flashcards
Sputnik-1
Sputnik-1
Signup and view all the flashcards
Protocol Stack
Protocol Stack
Signup and view all the flashcards
Server
Server
Signup and view all the flashcards
Client
Client
Signup and view all the flashcards
Peer-to-peer Network
Peer-to-peer Network
Signup and view all the flashcards
Dedicated Client/Server Network
Dedicated Client/Server Network
Signup and view all the flashcards
Physical Topology
Physical Topology
Signup and view all the flashcards
Logical Topology
Logical Topology
Signup and view all the flashcards
Point-to-Point Topology
Point-to-Point Topology
Signup and view all the flashcards
Physical Star Topology
Physical Star Topology
Signup and view all the flashcards
Physical Bus Topology
Physical Bus Topology
Signup and view all the flashcards
Physical Ring Topology
Physical Ring Topology
Signup and view all the flashcards
Physical Tree Topology
Physical Tree Topology
Signup and view all the flashcards
Hybrid Network Topology
Hybrid Network Topology
Signup and view all the flashcards
Total Cost of Ownership (TCO)
Total Cost of Ownership (TCO)
Signup and view all the flashcards
Data Collision
Data Collision
Signup and view all the flashcards
Network Disruption
Network Disruption
Signup and view all the flashcards
Study Notes
Data Communication History
- 1753: Proposal for a communication line between villages using 26 parallel wires, one for each letter of the alphabet.
- 1833: Carl Friedrich Gauss developed a system using a 5x5 matrix to represent letters, allowing messages to be sent on a single wire.
- 1834: Samuel Finley Breese Morse contributed to the single-wire telegraph, inventing the first successful data communication system using binary coded electrical signals. He also developed Morse code (dots and dashes).
- 1840: Morse secured an American patent for the telegraph.
- 1844: The first telegraph line was established. The first message was "What hath God wrought!".
- 1875: Alexander Graham Bell is credited with inventing the telephone. He founded the American Telephone and Telegraph Company in 1885.
- 1899: Guglielmo Marconi succeeded in sending radio (wireless) telegraph messages.
- 1957: Launch of Sputnik-1, Earth's first satellite, launched by the Soviet Union on October 4, 1957.
Network History
- 1963: Syncom-1 launched, intended to be the first geostationary satellite but failed due to electronic issues.
- 1963: Syncom-2 launched, world's first geostationary communications satellite, placed over the Atlantic Ocean and Brazil.
- 1964: Syncom-3 launched, first geostationary satellite to provide live television coverage, covering the 1964 Tokyo Olympics.
- Diwata-1 (AKA PHIL Microsat-1): First Philippine satellite and microsatellite launched. Micosatellite launched to the ISS on March 23, 2016.
- Maya-1, Maya-3, Maya-4: Filipino-made cube satellites, returned to earth after ten-month missions.
Computer Networks
- Computer Network: Two or more interconnected computers sharing resources.
- Elements of a Computer Network: Protocols (rules for operation), Protocol Stack(list of protocols), Data and Messages(information), Communication Medium(connects devices), Devices (computers, routers, switches, etc.).
- Network Classification (by geographic scope):
- Personal Area Network (PAN): Computers confined to a building or cluster of buildings. Typically privately owned.
- Local Area Network (LAN): Computers within a city or cluster of cities, often using facilities of telecom providers.
- Metropolitan Area Network (MAN): Computers outside a building or cluster of buildings.
- Wide Area Network (WAN): Computers in different countries or continents. Often referred to as the internet (internet).
Network Topology
Physical Topology:
- Point-to-Point: Only two stations are connected. Simple, but limited communication.
- Multipoint: Connects three or more stations. More complex.
- Mesh: Every station has a direct communication path to every other station, completely connected
- Bus: All stations are connected to a single transmission medium
- Star: Stations are connected directly to a central device (hub or switch). Easier to add/remove devices, less cable needed, but loss of all connections if the central device fails
- Ring: Stations are connected in a closed loop.
Logical Topology: Describes how data flows through a network.
-
Tree: Central root node (top level) connects to other nodes that are one level lower.
-
Hybrid: Combines two or more traditional topologies
Network Topology (Advantages/Disadvantages)
- This section summarizes the advantages and disadvantages of each topology.*
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
