CHAPTER 2 by https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn Made with a wink and a smile en-us 2020-09-28 10:50:50 UTC 2024-05-16 04:13:54 UTC hello@padlet.com 2.1 CONCEPT NETWORK😊 mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/783984384 2020-09-28 11:02:45 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/783984384 What is a network? mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/783989110 A collection of computer and devices connected together via communication device and transmission media to share resources
                                        (Shelly,2018)]]> 2020-09-28 11:06:50 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/783989110 COMMUNICATION mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784084553 •The process in which two or more computer or devices transfer data, instruction and information

•Some communication involve cables and wires; other are sent wirelessly through the air]]> 2020-09-28 12:09:55 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784084553 COMMUNICATION SYSTEM mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784110545 2020-09-28 12:22:03 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784110545 COMMUNICATION DEVICE🙂 mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784145517 *HARDWARE]]> 2020-09-28 12:36:47 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784145517 TRANSMISSION MEDIA mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784167142 *SOFTWARE
•Transmission media consist of materials or substances capable of carrying one or more signal (Shelly,2018)
•A communication channel or transmission media on which the data, instruction,or information travel]]> 2020-09-28 12:44:59 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784167142 TRANSMISSION MEDIA mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784169608 *SOFTWARE
Wired/physical transmission media]]> 2020-09-28 12:45:56 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784169608 TRANSMISSION MEDIA mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784173903 2020-09-28 12:47:32 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784173903 ADVANTAGES OF A NETWORK mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784510464 2020-09-28 14:23:16 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784510464 DISADVANTAGES OF A NETWORK mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784657515 1. Attack by viruses
 When computers are connected by a network,the virus can spread itself electronically,at computer speeds
2. Slow service
As more users log onto the network and request files,send things to be printed and open more software applications,the network can start to slow down
3. High cost
Every workstation needs a network interface card to enable it to be connected to the network. Other hardware such as hubs, switches and routers are often needed
]]> 2020-09-28 14:59:09 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784657515 DEFINE NETWORK ARCHITECTURE mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784791374 •The configuration of computer devices,and media on a network]]> 2020-09-28 15:30:43 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784791374 PEER-TO-PEER mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784830024 Diagram:]]> 2020-09-28 15:39:39 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/784830024 PEER-TO-PEER mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786442622 Each computer or mobile device called a  peer, have equal responsibilities and capabilities,sharing hardware,data or information with other computers and mobile devices on the peer-to-peer network

Suitable for small network. Connects fewer than 10 computers]]> 2020-09-29 02:00:56 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786442622 CLIENT/SERVER mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786443890 Diagram:]]> 2020-09-29 02:01:39 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786443890 CLIENT/SERVER mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786453574 One or more computers act as a server,and other computers on the network request services from the server

 Client are other computers and mobile devices on the network that rely on the server for its resources

SERVER controls access to the hardware, software,and other resources on the network and provides a centralized storage area for programs,data,and information]]> 2020-09-29 02:06:55 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786453574 ADVANTAGES mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786468233 Peer-to-peer
  • Easy and inexpensive to set up the network
  • More reliable because failure of one peer will not affect other peers
  • All the peers can share their resources to other.
Client/server
  • Centralized control by the server promotes better security and managey of the network.
  • Data backup and recovery is easier since all data is stored in the server.
]]> 2020-09-29 02:15:24 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786468233 DISADVANTAGES mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786480884  Peer-to-peer
  • Lack of security control or other management function.
  • Data recovery or backup is very difficult. Each computer has to maintain its own backup system

Client/server
  • High cost to set up and maintain the network.
  • Less reliable because too dependent on the server;failure of server will affect the operations of the whole network.
  • Network congestion may occur if too many clients request services from server at the same time.
]]> 2020-09-29 02:22:24 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786480884 TYPES OF PEER-TO-PEER (P2P) mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786503071 1. Home peer-to-peer 🏡
- Accessibility of resources is limited (within home,school)
- sharing network printer

2. Internet peer-to-peer
-  scope of accessibility is world wide
-  download movie from P2P network 
(eg : BitTorrent)

]]> 2020-09-29 02:35:29 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/786503071 Explain classification of network mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788159238 • Network usually are classified as a local area network (LAN) and wide area network (WAN).

•The main difference among these classification is their area of coverage.]]> 2020-09-29 14:57:57 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788159238 LOCAL AREA NETWORK (LAN) mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788185970 A wireless LAN (WLAN) is a LAN that uses no physical wires]]> 2020-09-29 15:03:37 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788185970 WIDE AREA NETWORK mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788197240 A WAN can be one large network or can consist of multiple LANs connected together

• The Internet is the world's largest WAN ]]> 2020-09-29 15:05:53 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788197240 Different LAN and WAN? mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788199775 2020-09-29 15:06:23 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788199775 Explain the internet mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788220745
  • Internet is a worldwide collection of network that connect millions of businesses, government agencies, educational institution,and individuals.
    • ]]>     2020-09-29 15:10:43 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788220745     Advantages of the internet mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788340250
  • Facilitates communication
  • Provide abundant information
  • Improves education
  • Provide convenience through online application
    • ]]>     2020-09-29 15:34:57 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788340250     Disadvantages of the internet mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788346563
  • Theft of personal information
  • Expose to malware threats
  • Expose to pornography
  • Social disconnect
    • ]]>     2020-09-29 15:36:16 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788346563     Define intranet mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788354491 • An intranet is a private network of an organization's information or operations with its employees.]]> 2020-09-29 15:37:53 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788354491 Define extranet mohamadraiessani https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788364407 • Extranet is a private network of an organization that securely share parts of organisation's information with its suppliers,vendors,partners,customer or other organization.]]> 2020-09-29 15:39:57 UTC https://padlet.com/mohamadraiessani/vzk5l3pi4rh5srzn/wish/788364407