Networking
Networking
Communication: Two or more nodes things that exchange information across a medium using a shared language.
Computer Network: Two or more nodes that are connected using some type of physical medium exchanging information using a common networking protocol.
Node: Computer, Peripheral, or Networking device
Medium: Copper cable: Fiber optic, wireless radio(WiFi)
Protocol: Lan: Ethernet,Token ring, FDDI, 802.11 wireless
Wan: IP(HTTP), PPP, ATM ISDN frame relay
Networking Benefits
-Access more information
-share peripherals
-share applications
-Portability (centralized file storage, e-mail)
-Reduce cost of transportation
Direction of data communication
Simplex: one way
Duplex: Two way (simultaneously)
Half Duplex: Two way (one at a time)
Serial: one bit at a time
Parallel: more than one bit at a time
Cat5/5e I RJ45 I 100m I 100- 1000Mbps 100bps
fiber optic I various I 300m-40kmt I 100Mbps-10Gbps++
802.11 wireless I n/a I 100ft I 11Mbps-200Mbps
Technology choices change depending on several factors. A big one is the network distance or diameter.
-Lan: Local Area Network (in a building)
-Man: Metro Area Network (in a city)
-Wan: Wide Area Network (across cities/ countries)
Intranet (Private Wan): Private computer network.
Internet (Public Wan): Worldwide, publicly accessible network of interconnected computer networks.
Extranet (private Wan w/ secure public access .e.g. VPN: Can be viewed as part of a companies intranet this can be extended to users outside of the company.
Communication: Two or more nodes things that exchange information across a medium using a shared language.
Computer Network: Two or more nodes that are connected using some type of physical medium exchanging information using a common networking protocol.
Node: Computer, Peripheral, or Networking device
Medium: Copper cable: Fiber optic, wireless radio(WiFi)
Protocol: Lan: Ethernet,Token ring, FDDI, 802.11 wireless
Wan: IP(HTTP), PPP, ATM ISDN frame relay
Networking Benefits
-Access more information
-share peripherals
-share applications
-Portability (centralized file storage, e-mail)
-Reduce cost of transportation
Direction of data communication
Simplex: one way
Duplex: Two way (simultaneously)
Half Duplex: Two way (one at a time)
Serial: one bit at a time
Parallel: more than one bit at a time
Cat5/5e I RJ45 I 100m I 100- 1000Mbps 100bps
fiber optic I various I 300m-40kmt I 100Mbps-10Gbps++
802.11 wireless I n/a I 100ft I 11Mbps-200Mbps
Technology choices change depending on several factors. A big one is the network distance or diameter.
-Lan: Local Area Network (in a building)
-Man: Metro Area Network (in a city)
-Wan: Wide Area Network (across cities/ countries)
Intranet (Private Wan): Private computer network.
Internet (Public Wan): Worldwide, publicly accessible network of interconnected computer networks.
Extranet (private Wan w/ secure public access .e.g. VPN: Can be viewed as part of a companies intranet this can be extended to users outside of the company.
Networking Devices
NIC- Network interface cards or Network Adapters.
-Media interface (e.g. wired, wireless, fiber)
Lan Network Switches: A network switch is a hardware device that joins multiple computers together within one local area network (lan) using copper, wireless, or fiber optic media. Technically, network switches operate at layer two (Data link layer) of the OSI model.
IP is 32 bits long
Lan/Wan Routers: These are Wan devices used to connect networks together into intranets, extranets and internet. They use IP protocol to address all the nodes on the network. Additional features include firewall, special Wan interfaces and protocol conversion between different networks.
Topology: The physical arrangement of nodes of a network.
NIC- Network interface cards or Network Adapters.
-Media interface (e.g. wired, wireless, fiber)
Lan Network Switches: A network switch is a hardware device that joins multiple computers together within one local area network (lan) using copper, wireless, or fiber optic media. Technically, network switches operate at layer two (Data link layer) of the OSI model.
IP is 32 bits long
Lan/Wan Routers: These are Wan devices used to connect networks together into intranets, extranets and internet. They use IP protocol to address all the nodes on the network. Additional features include firewall, special Wan interfaces and protocol conversion between different networks.
Topology: The physical arrangement of nodes of a network.
Professional certification
For the Professional certifications project we had to look up the many certifications that are in the field of computer engineering. These include A+ certification, CCIE, MCSE and many more. These type of individual certifications give the technician enough knowledge/skills for them to succeed in the field. These specifications can range from being oriented towards 1 program such as only Cisco products based or it can be in general meaning there is no vendor specification such as within the network+ certification.
For the Professional certifications project we had to look up the many certifications that are in the field of computer engineering. These include A+ certification, CCIE, MCSE and many more. These type of individual certifications give the technician enough knowledge/skills for them to succeed in the field. These specifications can range from being oriented towards 1 program such as only Cisco products based or it can be in general meaning there is no vendor specification such as within the network+ certification.
Design a Large Network
In the design a large network challenge we had to build a network for a combination of 3 computer labs each with their own specifications. There were numerous things that I learned throughout this activity that were unknown to me before. Firstly, at the beginning of this project when making the structural diagram I had to account for the wireless access which is supposed to relay information between the laptops and the servers, so the wireless access port has to be connected to the core switch. Next, is that two different types of switches have to be connected one being the core switch which is connected to the servers and internet, while the other one being a server that connects pc’s and other peripherals to the core switch intercommunicating data/information. On the second part of the assignment, which was when buying the parts I learned that parts have to be compatible. This meaning that an individual cannot hook up a server which supports cat5 with a cat6 cable or so on. When finding the wireless adapter and the core switch it was difficult to find due to the specification of each device, an illustration would be when searching for the core switch it there were no products listed in tiger direct or Canada computers that fit the specifications and even on the manufacturer’s website the product and the model number were given however the price was not mentioned so an alternate site had to be used in this case Amazon.ca. Therefore throughout this project my knowledge of interconnecting computer systems through the use of networking increased leading me to learn new and extensive details about networking in a larger area (WAN).
In the design a large network challenge we had to build a network for a combination of 3 computer labs each with their own specifications. There were numerous things that I learned throughout this activity that were unknown to me before. Firstly, at the beginning of this project when making the structural diagram I had to account for the wireless access which is supposed to relay information between the laptops and the servers, so the wireless access port has to be connected to the core switch. Next, is that two different types of switches have to be connected one being the core switch which is connected to the servers and internet, while the other one being a server that connects pc’s and other peripherals to the core switch intercommunicating data/information. On the second part of the assignment, which was when buying the parts I learned that parts have to be compatible. This meaning that an individual cannot hook up a server which supports cat5 with a cat6 cable or so on. When finding the wireless adapter and the core switch it was difficult to find due to the specification of each device, an illustration would be when searching for the core switch it there were no products listed in tiger direct or Canada computers that fit the specifications and even on the manufacturer’s website the product and the model number were given however the price was not mentioned so an alternate site had to be used in this case Amazon.ca. Therefore throughout this project my knowledge of interconnecting computer systems through the use of networking increased leading me to learn new and extensive details about networking in a larger area (WAN).
Article Review
In the article review I had to make a review of how using the traditional scientific method is becoming obsolete, and that everything is becoming theoretical especially in the field of science. People now have taken a step to abandon the scientific, this is due to the fact that almost all the information people need is on the internet and search engines such as Google are used to find the desired data without having to even conduct an experiment and so on. This also puts into perspective how much information is accumulated in the vast system of the internet. Just as people evolve so does our technology because our unit of storage is increasing from TB (Terabyte) which is stored on a disk array to PB (Petabyte) which is will be stored onto the cloud. Large companies tend not to use the scientific method because it results in them saving time, money, and effort. Chris Anderson is the one that is researching this idea along with the , Peter, Norvig. There were many technologies mentioned throughout this article such as Google search engine, Petabyte, kilobyte and etc. Therefore in the unit review I learned a number of things which were oblivious to me before such as how the amount of information is in Exabytes. |