Class Notes (838,384)
Canada (510,870)
CIS 1000 (102)
Zoe (1)
Lecture

CIS1000 Chapter 7 Summary.doc

6 Pages
132 Views
Unlock Document

Department
Computing and Information Science
Course
CIS 1000
Professor
Zoe
Semester
Fall

Description
CIS*1000 Chapter Summaries – Chapter 7: Networking 1) What is a computer network? • Two or more computers connected by software and hardware that communicate with each other. • Each device connected to a network is referred to as a node. A node can take the form of: o A computer o A peripheral (such as a printer) o A game console, etc. 2) What benefits are there to networking computers? • Networks facilitate resource sharing, This means that computers on the same network can often share: o An internet connection o Peripherals (like a shared home printer) o Files (through public folders) • Additionally, networks allow computers on the same network running different operating systems (Windows vs. OS X) to communicate. 3) What disadvantages are there to having computers networked? • Cost (creating a network involves acquiring additional equipment) • Network Administration - networks require maintenance in the form of administration. Administration entails o Installing new devices on the network o Checking to make sure the network is running properly o Updating software on the network o Configuring network security 4) Network Architecture – how a network is designed. Can be classified by a number of different characteristics: • Through network administration: o Networks can be administered locally or centrally:  Local administration means each node in a network is taken care of separately. • A peer-to-peer (P2P) network is a good example of a locally administered network. Each node on this type of network communicates with any other node on the network as an equal (or peer).  Central administration (client/server networks) – computers on a network are used to perform certain tasks (these computers are the clients) and are managed centrally by another computer called a server. Clients communicate with the server to perform network functions such as printing.  Client/server networks are better for managing a large number of computers (like in a large office), but P2P networks are more easily configured and better for use at home. • A home network server is used to store and share media and back up files on the network it is connected to. This type of server can be installed on a P2P network without changing the network’s architecture. • Through distance: o LAN or Local Area Network – all nodes on this type of network are located within a small geographic area. An example is a network in a school computer lab.  A HAN is a LAN located in the home, or a Home Area Network o LANs can be connected over long distances to form a WAN or Wide Area Network. This allows separate LANs to communicate.  Wireless networks spanning large areas are technically WANs, but are usually referred to as a Metropolitan Area Network or MAN if they are serving a city in particular. 5) Network Components • All networks require: o 1) A means of connecting nodes on the network  All network nodes are connected to each other and the network through transmission media – these establish communications between nodes and can be wireless or wired • Wireless networks utilize radio waves to communicate • Wired networks utilize cables or wires to communicate. These include twisted- pair cables (similar to those found in normal telephone cables), coaxial cables (found in cable TV connections) and fiber-optic cables (made of plastic or glass, transmit data very quickly; not often seen within a home) o Wired vs. wireless: the type of transmission media chosen is dependent on user requirements. Different types transmit data at different speeds.  Data transfer rate (bandwidth): the maximum speed data can be transmitted from one node to another  Throughput: the actual speed of data transmission, always less than or equal to data transfer rate. o 2) Devices that allow for communication and data transmission  Network adapters – devices within or connected to network nodes that allow these nodes to connect with each other and communicate over a network. • All computers sold today (and many peripherals) contain a type of network adapter referred to as a network interface card (NIC). Many NICs are configured to work wirelessly but many can use wired media as well. o Wireless vs. wired connections: Wired connections sometimes
More Less

Related notes for CIS 1000

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit