Data communication october 2020.pdf

Data Communication 2  3 ∙ define accurately data Communication, bandwidth, and network after watching “introduction to data communication video”; ∙ state and explain accurately the different types of networks u...

Data Communication 2  3 ∙ define accurately data Communication, bandwidth, and network after watching “introduction to data communication video”; ∙ state and explain accurately the different types of networks using lesson notes; o LAN, WAN, MAN, WLAN ∙ List five main requirements for setting up a network after watching the video. ∙ State three main reasons for establishing a LAN Network with the aid of the internet; ∙ State two advantages and disadvantages of using WAN Network after a group presentation;  Differentiate between using a ring and star LAN Network with the aid of 4 diagrams; List three advantages and three disadvantages of networking computers after group dicussion; Identify and explain the two types of transmission media after conducting online research; cable/wired media(coaxial, fibre-optic, twisted pair) wireless media (Wifi, Bluetooth, satellite, microwave, infrared, radio requency) explain the three classification of bandwidth Narrow band Voice band Broadband explain with the aid of diagram the communication modes: (simplex, duplex, half duplex), point-to-point, and broadcast;  5 HELLO! I am Tashaneia Austin M.Ed.,B.Ed.. tashaneia.austin@merlgrov ehighschool.org  1. Definition of terms  7 Vocabulary Network Transmission A computer network is a Data transmission refer set of computers s to the process of connected together for transferring data the purpose of sharing between two or more resources. The most digital devices. Data common resource shared is transmitted from one today is connection to the device to another in Internet. analog or digital format.  8 Vocabulary Data communication Bandwidth refers to the transmission In computing, bandwidth of this digital data is the maximum rate of between two or more data transfer across a computers and a given path. Bandwidth computer network or data may be characterized as network is a network bandwidth, data telecommunications bandwidth, or digital network that allows bandwidth computers to exchange data.  2. Bandwidths  10 Categories of Bandwidth ⊗ Narrow-band: refers to communications that use frequency content within the coherence band of a frequency channel. Transmit 100,000 plus characters per second  11 Categories of Bandwidth ⊗ Voice band: The frequency band, or range, specified for voice communications in the public switched telephone network (PSTN) Transmit 1000-8000 characters per second  12 Categories of Bandwidth ⊗ Broad band: These use fibre-optic cables, microwaves and satellite transmission. Hence data is transmitted really fast. Transmit 1000-8000 characters per second  Give an 13 example of a device that uses each of the bandwith frequency ? (Narrow, Broad  14 Data communication channels ⊗ This is the medium through which data is transmitted. ⊗ These channels are categorized according to their: ⮚ transmission speed (bandwidth) ⮚ direction of data flow (communication system directions) ⮚ transmission/communication modes  15 DATA TRANSMISSION MODES This determines the number of characters transmitted in a second.  16 ASYNCHRONOUS DATA IS TRANSMITTED ONE CHARACTER AT A TIME AND ITS IRREGULAR.  17 SYNCHRONOUS High-speed transmission and it is continuous. This data is sent in large quantity.  2. DATA FLOW DIRECTIONS  19 𝔻𝔸𝕋𝔸 𝔽𝕃𝕆𝕎 This refers to the how data flow along lines and media.  20 Simplex Only one device can transmit the signal.  21 Half Duplex Only one device can transmit the signal. Each device can both transmit and receive, but not at the same time.  22 Full Duplex Devices can transmit data simultaneously.  3. Transmission Media Communication media (or transmission media) are the storage and transmission tools used to store and deliver information or data These are the cables and signaling methods that carry data communications from one device to another within a network. There are two 25 types of transmission media Cabled and Wireless Media Coaxial 26 Cables Coaxial cable is a type of copper cable specially built with a metal shield and other components engineered to block signal interference. It is primarily used by cable TV companies to connect their satellite antenna facilities to customer homes and Fibre-Optic 27 Cables A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. They're designed for long-distance, high- performance data networking, and telecommunication Twisted Pair 28 Cables Twisted-pair cable is a type of cabling that is used for telephone communications and most modern Ethernet networks. A pair of wires forms a circuit that can transmit data. Wireless 29 Media As the world become more modernized and people depend solely on instant communication. Wireless technology is more favourable to use for data transmission.  30 Radio Signals Most common form of wireless transmission. Satellites facilitate the transmission of radio waves around the global to support cell phones and other technologies. Microwave 31 transmission A Microwave link is a communication s ystem, that bridges radio signals, to transmit data between two or more fixed locations up to 50 miles.  32 Infrared Transmission Infrared transmission refers to energy in the region of the electromagnetic radiation spectrum at wavelengths longer than those of visible light, but shorter than those of  33 Infrared Transmission ⊗ Line of sight ⊗ Scattered An unblocked Infrared direct line between This transmission the device and the is sent out in trans receiver. multiple directions. It bounces off objects until is connects with the receiver.  34 Thank you for listening and participating.  35 Individual Activity State the types of transmission media that describes each of the following: a. uses wires to State the transmit data. types of b. transmits data transmissio through the air. n for each1. data can flow in both of the directions, but only following: direction at a time. 2. data can flow in only one direction. 3. data can be sent and received at the same time. Group Activity 1. a. Prepare a presentation (creatively) on the network topologies; Identify the topologies (3 marks) b. insert pictures of each topology (3 marks) c. describe how the data is transmitted through these topologies. (9 marks) 2. Discuss the types of network that are available in data communication. (8marks) Each network should have visual display. (4 marks) Explain the terms intranet and extranet with examples. (4 marks) Bibliography (4 marks) Rubric creativity 10 Content 31 marks Bibliography 4 marks Total 45 marks.  37 MAPS our office  38 Now you can use any emoji as an icon! And of course it resizes without losing quality and you can change the color. How? Follow Google instructions https://twitter.com/googledocs/status/730087240156643328 ✋👆👉👍👤👦👧👨👩👪💃🏃💑❤😂😉😋😒😭👶 😸🐟🍒🍔💣📌📖🔨🎃🎈🎨🏈🏰🌏🔌🔑 and many more...  39 Free templates for all your presentation needs For PowerPoint and 100% free for Ready to use, Blow your audience Google Slides personal or professional and away with attractive commercial use customizable visuals