Chapter 7 Networking Connecting Computing Devices Nikki Schnelker
- Slides: 12
Chapter 7: Networking= Connecting Computing Devices Nikki Schnelker
What is a Computer Network? A computer network is simply two or more computers that are connected via software and hardware so they can communicate with each other.
Nodes Each device connected to a network is a node.
Types of cables Fiber-optic cable: is made up of plastic or glass fibers that transmit data at extremely fast speeds Twisted-pair cable: is made up of copper wires that are twisted around each other and surrounded by a plastic jacket Coaxial cable: Consists of a single copper wire surrounded by layers of plastic. If you have cable TV, the cable running into your TV or cable box is most likely a coaxial cable
Types of cables continued Which type transmits data the fastest? Fiber optic Which type is used for normal telephone cable? Twistedpair cable
What is another name for data transfer rate? Bandwidth Data Transfer Rate
What is it? the actual speed of data transfer that is achieved. Throughput How is it measured? Both data transfer rate and throughput are usually measured in megabits per second (Mbps).
Concept of Network Neutrality If you posted a blog on the Internet, it would have the same opportunity of being accessed as a new on-demand movie from Verizon or an online sale at Target. This is because data on the internet is treated equally. There has been no differentiation by the type of user, the content that is being uploaded, or by the mode of communication.
How Are Networks Classified? Classified: The distance between nodes on a network is one way to describe a network.
1. Personal area network (PAN) Ex. Smartphones 2. Local area network (LAN) 5 Common Types of Networks Ex. Computer Lab 3. Home area network (HAN) Ex. Television 4. Metropolitan area network (MAN) Ex. WIFI networks 5. Wide area network (WAN) Ex. All the connected LANS (such as a school with multiple campuses with LANS that are connected with telecommunications lines)
