1. What was the first communication network used for? Pg 62
Phone calls 2. What is the purpose of an A to D converter? Pg 62
To change analog signals to digital signals for faster and better transference if the data in a call. 3. Are most modern networks designed for voice of data? Pg 63-64 yes 4. What method reduces the size of a video file for storage and transmission? Pg 66 compression 5. Explain the application if a client-server network as it relates to web browsing. Pg 68 your computer (the client) talks to the internet provider’s server (the isp) to retrieve information from another site’s server. 6. What device does a client or server use to move bits to and from a network? Pg 70
Network interface card 7. Explain the format of a URL. Pg 71 http:// is the protocol used. Websitehname.com is the server. And everything after that is the page. 8. What protocol defines how a web browser accesses a web page? Pg 77
HTTP, or hypertext transfer protocol 9. Where is the protocol stated in a URL? Pg 78
At the very front, before the server name. 10. Define node and link as they related to a network topology. Pg 84 link- any cables involved between two devices. Node refers to the devices. 11. State the purpose of a LAN switch. Pg 89
To direct ‘calls’ to the proper location. Kind of like a mail-man 12. Define internet and explain what it is. Pg 91-92
Interconnected networks. A bunch of client-server networks talking to each other. 13. What is the purpose of a device driver? Pg 35
To allow a computer to use a device. 14. Define network topology. Pg 46 logical organization of interconnected devices, despite the physical arrangement of them 15. Name, identify, and explain the four major network topologies. Pg 46-48
Ring – in a circle, messages must use a system similar to the telephone game to get a message from one side to the other. bus – central line, all messages go to everyone. star - set up like a star, all connected to a central hub/switch and messages are either sent out to everyone (hub) or just to the intended receiver (switch)
Mesh – everyone is connected to everyone else. All of them can send a message straight to each other.