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Chapters 7 & 12 Test
Technology in Action 7th Edition
| Question | Answer |
|---|---|
| Star topology | an active topology in which the nodes connect to a central communications device called a switch. The switch recieves a signal from the sending node and retransmites it to the node that should recieve it. |
| Switch | A device for transmitting data on a network. A switch makes decisions, based on the media access control(MAC) address of the data, as to where the data is to be sent. |
| Throughput | The actual speed of data transfer that is achieved. It is usually less than the data transfer rate and is measured in megabits per second (mbps) |
| Token | A special data packet used to pass data in a token-ring network |
| Twisted pair cable | Cables made of copper wires that are twisted around each other and are surrounded by a plastic jacket. |
| VPN (Virtual private network) | A network that uses public communication pathways to provide branch offices or employees who are not at the office with secure access to the company network. VPN's maintainprivacy by using secure data communication protocals. |
| WAN (Wide area network) | A network made up of local area networks (LANS) connected over long distances. |
| WI-Fi (Wireless Fidelity) | The 802.11 standard for wireless data transmissions established by the Institute of Electrical and Electronics Engineers (IEEE) |
| Wireless network | A network that uses radio waves instead of wires or cable as its transmission |
| SSID (service set identifier) | A network name that wireless routers use to identify themselves. |
| Scalable network | A type of network that enables the easy additionof users without affecting the performance of the other network nodes. |
| Router | A device that routers packets of data between two or more networks |
| Print queue | A software holding area for printing jobs |
| Peer-to peer (p2p) | The process of users transferring files between computers |
| NOS (Network operating system) | Software that handles requests for info, internet access, and the use of peripherals for the rest of the network nodes. |
| Network Topology | The layout and structure of the network. |
| Network Adapter card | A device that enables the computer to communicate with the network using a common data communication language, or protocal. |
| Network | A group of two or more computers that are configured to share info and resources such as printers, files and databases. |
| LAN (Local area network) | A network in which the nodes are located within a small geographic area. |
| HUB | A simple amplication device that recieves data packets and retransmits them to all nodes on the same network. |
| Firewall | A software program or hardware device designed to prevent unauthorized access to computers or networks. |
| Fiber-optic Cable | A cable that transmits data at close to the speed of light along glass or plastic fibers. |
| Ethernet Network | A network that uses the ethernet protocal as the means by which the nodes on the network communicate. |
| Bandwidth (Data transfer rate) | The maximum speed at which data can be transmitted between two nodes on a network; usually measured in megabits per second (mbps) |
| MAC Address(media access control address) | A physical address, similar to a serial number on a appliance, that is assigned to each network adapter; it is made up of six 2-digit characters such as 01:40:87:44:79:A5 |
| Protocals | 1. A set of rules for exchanging data and communication. 2. The first part of the uniform resource locater (URL) indicating the set of rules used to retrieve the specific document. The protocal is generally followed by a colon; two forward slashes; www |
| Intranet | A private corporate network that is used exclusively by company employees to facilitate information sharing, a database access, group scheduling, video conferencing, and other employee and costomer collaborators. |
| 802.11 Standard | A wireless standard established in 1997 by the institute of electrical and electronics engineers; also known as WI-Fi(Short for wireless fidelity). It enables wireless network devices to work seamlessly with other network and devices. |
| Bus topology | A system of networking connections in which all dvices are connected to a central cable called the bus. |
| Coaxial cable | A single copper wire surrounded by layers of plastic insulation and sheating; used mainly in cable television and cable internet service. |
| Ring Topology | A network layout in which computers and peripherals are laid out in a logical circle and data is passed using a special data packet called a token. |
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