So I still have more definitions I will posrt, but I decided to write something random. I am soooo looking forward to the end of the semester. It has been a good one but I need a break from school now. I have been in school all year round and need a break before I start the year all over again. I will spend the break with my family and just enjoy life the best I can.
Wish you all the best and I will be writing more soon!
Sunday, December 4, 2011
More definitions for chapter 8 continued.
METROPOLITAN AREA NETWORK (MAN): is a high-speed network that connects local area networks in a metorpolitan area such as a city or town and handles the bulk of communications activity across that region. A MAN typoically includes one or more LANs, but convers a smallers geopgrapghic area than a WAN.
WIDE AREA NETWORK (WAN): is a network that covers a large geograpghic area (such as a city, country, or the world) using a communicatios channel that combines many types of media such as telephone lines, cables, and raido waves. A WAN can be one large network or can consist of two or more LANs connected together.
CLIENT/SERVER NETWORK: one or more computers act as a server, the other computers on the network request services from the server.
SERVER: controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information.
CLIENTS: are theother computers and mobile devices on the network that rely on the server for its resources.
PEER-TO-PEER NETWORK: a simple, inexpensive network that typically connects fewer than 10 computers. Each computers, called a peer, has equal responsibilities and capabilities, sharing hardware, data, or information with other computers on the peer-to-peer network.
INTERNET PEER-TO-PEER (P2P): describes an Internet network on which users accesss each other's hard disks and exchange files directly. This type of peer-to-peer network sometimes is called a file sharing network because users with compatiable software and an Internet connection conpy files from someone else's hard disk to their hard disks.
NETWORK TOPOLOGY: refers to the layout of the computers and devices in a communications networks. Three commonly used network topologies are star, bus, and ring. Most networks, including the Internet, use combinations of these topologies.
STAR NETWORK: all of the computers and devices (nodes) on the network connect to a central device, thus forming a star. Two types of devices that provide a common central connection point for nodes on the network are a hub and a switch. All data that transfers from one node to another passes through the hub or switch.
BUS NETWORK: consists of a single central cable, to which all computers and other devices connect. The bus is the physical cable that connects the computers and other devices. the bus in the bus network transmits data, instructions, and information in both directions. Bus networks are popular on LANs because they are inexpensive and easy to install. ONe advantage of the bus network is that computers and can be attached and detached ar any point on the bus without disturbing the rest of the network. Another advantage is that failure of one device usually does not affect the rest of the bus network. The greatest risk to a bus network is that the bus itself might become inoperable. If that happens, the network remains inperable until the bus is back in working order.
RING NETWORK: a cable forms a closed loop (ring) with all computers and devices arranged along the ring. Data transmitted on a ring network travels from device to device around the entire ring, in one direction.
INTRANET: is an internal network that uses Internet technologies. Intranets generally make company information accessible to employees and facilitate working groups.
NETWORK STANDARD: defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of physical cable and/or the wireless technology used. A standard that outlines characteristics of how two network devices communicate is called a protocol.
ETHERNET: is a network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted; that is, each node attempts to transmit data when it determines the network attemp to send data at the same time, a collision occurs, and the computers must attempt to send their messages again.
TOKEN RING: standard specifies that computers and devices on the network share or pass a special signal, called a token, in a undirectional manner and in a preset order. A token is a special series of bits that function like a ticket. The device with the token can tansmit data over the network. Oly one token exists per network.
TCP/IP: short for Transmission Control Protocol/Internet Protocol, is a network standard, specifically a protocol, that defines how messages into small pieces, called packets; providing addresses for each packet; checking for and detecting errors; sequencing packets; and regularing the flow of messages along the network.
WI-FI (Wireless Fidelity): identifies any network based on the 802.11 standards. Developed by IEEE, 802.11 is a series of network standards that specifies how two wireless devices communicate over the air with each other.
BLUETOOTH: is a standard, specifically a protocol, that defines how two Bluetooth devices use short-range radio waves to transmit data. To communicate with each other, Bluetooth devices often much be within about 10 meters (about 33 feet) but can be extended to 100 meters with additional equipment.
UWB: (Ultra-Wideband) is a network standard that specifies how two UWB devices use short-range radio waves to communicate at high speeds with each other.
WIDE AREA NETWORK (WAN): is a network that covers a large geograpghic area (such as a city, country, or the world) using a communicatios channel that combines many types of media such as telephone lines, cables, and raido waves. A WAN can be one large network or can consist of two or more LANs connected together.
CLIENT/SERVER NETWORK: one or more computers act as a server, the other computers on the network request services from the server.
SERVER: controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information.
CLIENTS: are theother computers and mobile devices on the network that rely on the server for its resources.
PEER-TO-PEER NETWORK: a simple, inexpensive network that typically connects fewer than 10 computers. Each computers, called a peer, has equal responsibilities and capabilities, sharing hardware, data, or information with other computers on the peer-to-peer network.
INTERNET PEER-TO-PEER (P2P): describes an Internet network on which users accesss each other's hard disks and exchange files directly. This type of peer-to-peer network sometimes is called a file sharing network because users with compatiable software and an Internet connection conpy files from someone else's hard disk to their hard disks.
NETWORK TOPOLOGY: refers to the layout of the computers and devices in a communications networks. Three commonly used network topologies are star, bus, and ring. Most networks, including the Internet, use combinations of these topologies.
STAR NETWORK: all of the computers and devices (nodes) on the network connect to a central device, thus forming a star. Two types of devices that provide a common central connection point for nodes on the network are a hub and a switch. All data that transfers from one node to another passes through the hub or switch.
BUS NETWORK: consists of a single central cable, to which all computers and other devices connect. The bus is the physical cable that connects the computers and other devices. the bus in the bus network transmits data, instructions, and information in both directions. Bus networks are popular on LANs because they are inexpensive and easy to install. ONe advantage of the bus network is that computers and can be attached and detached ar any point on the bus without disturbing the rest of the network. Another advantage is that failure of one device usually does not affect the rest of the bus network. The greatest risk to a bus network is that the bus itself might become inoperable. If that happens, the network remains inperable until the bus is back in working order.
RING NETWORK: a cable forms a closed loop (ring) with all computers and devices arranged along the ring. Data transmitted on a ring network travels from device to device around the entire ring, in one direction.
INTRANET: is an internal network that uses Internet technologies. Intranets generally make company information accessible to employees and facilitate working groups.
NETWORK STANDARD: defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of physical cable and/or the wireless technology used. A standard that outlines characteristics of how two network devices communicate is called a protocol.
ETHERNET: is a network standard that specifies no central computer or device on the network (nodes) should control when data can be transmitted; that is, each node attempts to transmit data when it determines the network attemp to send data at the same time, a collision occurs, and the computers must attempt to send their messages again.
TOKEN RING: standard specifies that computers and devices on the network share or pass a special signal, called a token, in a undirectional manner and in a preset order. A token is a special series of bits that function like a ticket. The device with the token can tansmit data over the network. Oly one token exists per network.
TCP/IP: short for Transmission Control Protocol/Internet Protocol, is a network standard, specifically a protocol, that defines how messages into small pieces, called packets; providing addresses for each packet; checking for and detecting errors; sequencing packets; and regularing the flow of messages along the network.
WI-FI (Wireless Fidelity): identifies any network based on the 802.11 standards. Developed by IEEE, 802.11 is a series of network standards that specifies how two wireless devices communicate over the air with each other.
BLUETOOTH: is a standard, specifically a protocol, that defines how two Bluetooth devices use short-range radio waves to transmit data. To communicate with each other, Bluetooth devices often much be within about 10 meters (about 33 feet) but can be extended to 100 meters with additional equipment.
UWB: (Ultra-Wideband) is a network standard that specifies how two UWB devices use short-range radio waves to communicate at high speeds with each other.
More definitions for chapter 8 continued.
TEXT MESSAGING: also called SMS (short message service), allows users to send and receice short text messages, typically fewer than 300 characters, on a phone or other mobile device or computer.
PICTURE MESSAGING: users can send pictures and sound files, as well as short text messafes, to a phone or other mobile device, or a computer.
VIDEO MESSAGING: users can send short video clips, usually about 30 seconds in length, in addition to all picture messaging services.
WIRELESS INTERNET ACCESS POINT: users access wireless Internet access points with computers or devices that have the necessary built-in wireless capability or the appropiate wireless network card, USB network adaptor, ExpressCard madule, or PPC Card. Two types of wireless Internet access points are hot spots and mobile wireless metworks.
HOT SPOT: a wireless network that provides Internet connections to mobile computers and devices. Through the hot spot, mobile users check e-mail, browse the Web, and access any service on the INternet. Three hot spot technologies are Wi-Fi, WiMAX, and Bluetooth.
CYBERCAFE: or internet cafe, is a coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customers.
GLOBAL POSITIONING SYSTEM (GPS): a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order ot determine the receiver's goegraphic location.
COLLABORATE: work online with othe users connected to a server. Two methods of collaboration include collaborative software and document management.
COLLABORATIVE SOFTWARE: includes toos that enable users to share documents via online meetings and communicate with other connected users.
WEB COFERENCE: when the online meeting takeds place on the Web
DOCUMENT MANAGEMENT SYSTEM: provides for storage and mamgement of a company's documents, such as word processing documents, presentations, and spreadsheets. Users then access these documents, depending on their needs.
GROUPWARE: software that helps groups of people work together on projects and share information over a network.
VOICE MAILS: which functions much like an answering machine, allows someone to leave a voice messafe for one or more people.
VISUAL VOICE MAIL: users can view massafe details such as the length of calls, and in some cases, read message contents instead of listening to them.
MASHUP: a Web application that combines services from two or more sources, creating a new application.
NETWORK: a collection of computers and devices connected together via communications devices and transmission media.
VALUE-ADDED NETWORK (VAN): a third-party business that provides networking services for a fee.
LOCAL AREA NETWORK (LAN): a network that connects computers and devices in a limited geographical areasuch as a home, school computer laboratory, office building, or closely postitioned grooup of buildings. Each computer or device on the network, called a node, often shares resources such as printers, large hard disks, and programs. Often nodes are connected by cables.
WIRELESS LAN (WLAN): is a LAN that uses no physical wires.
PICTURE MESSAGING: users can send pictures and sound files, as well as short text messafes, to a phone or other mobile device, or a computer.
VIDEO MESSAGING: users can send short video clips, usually about 30 seconds in length, in addition to all picture messaging services.
WIRELESS INTERNET ACCESS POINT: users access wireless Internet access points with computers or devices that have the necessary built-in wireless capability or the appropiate wireless network card, USB network adaptor, ExpressCard madule, or PPC Card. Two types of wireless Internet access points are hot spots and mobile wireless metworks.
HOT SPOT: a wireless network that provides Internet connections to mobile computers and devices. Through the hot spot, mobile users check e-mail, browse the Web, and access any service on the INternet. Three hot spot technologies are Wi-Fi, WiMAX, and Bluetooth.
CYBERCAFE: or internet cafe, is a coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customers.
GLOBAL POSITIONING SYSTEM (GPS): a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order ot determine the receiver's goegraphic location.
COLLABORATE: work online with othe users connected to a server. Two methods of collaboration include collaborative software and document management.
COLLABORATIVE SOFTWARE: includes toos that enable users to share documents via online meetings and communicate with other connected users.
WEB COFERENCE: when the online meeting takeds place on the Web
DOCUMENT MANAGEMENT SYSTEM: provides for storage and mamgement of a company's documents, such as word processing documents, presentations, and spreadsheets. Users then access these documents, depending on their needs.
GROUPWARE: software that helps groups of people work together on projects and share information over a network.
VOICE MAILS: which functions much like an answering machine, allows someone to leave a voice messafe for one or more people.
VISUAL VOICE MAIL: users can view massafe details such as the length of calls, and in some cases, read message contents instead of listening to them.
MASHUP: a Web application that combines services from two or more sources, creating a new application.
NETWORK: a collection of computers and devices connected together via communications devices and transmission media.
VALUE-ADDED NETWORK (VAN): a third-party business that provides networking services for a fee.
LOCAL AREA NETWORK (LAN): a network that connects computers and devices in a limited geographical areasuch as a home, school computer laboratory, office building, or closely postitioned grooup of buildings. Each computer or device on the network, called a node, often shares resources such as printers, large hard disks, and programs. Often nodes are connected by cables.
WIRELESS LAN (WLAN): is a LAN that uses no physical wires.
Tuesday, November 22, 2011
More definitions
So here I am again with more definitions to help remember for chapter 8 now. Enjoy them!!!!
COMMUNICATIONS: describes a process in which two or more computers or devices tranfer data, instructions, and information.
SENDING DEVICE: initiates an instuction to transmit data, instructions, and information. a communication device that connnects the sending device to a communications channel.
COMMUNICATIONS CHANNEL: or transmission media, on which the data, instructions, or information travel.
RECEIVING DEVICE: that accepts the transmission of data, instructions, or informatiomn.
COMMUNICATIONS: describes a process in which two or more computers or devices tranfer data, instructions, and information.
SENDING DEVICE: initiates an instuction to transmit data, instructions, and information. a communication device that connnects the sending device to a communications channel.
COMMUNICATIONS CHANNEL: or transmission media, on which the data, instructions, or information travel.
RECEIVING DEVICE: that accepts the transmission of data, instructions, or informatiomn.
Sunday, October 30, 2011
ch. 6 Definitions (part 2)
BACKUP: is a duplicate of a file, program, or disk placed on a separate storage medium that you can use in case the original is lost, damaged, or destroyed.
RAID: (Redundant Array of Independent Disks) a group of two or more integrated hard disks
NAS: (Network Attached Storage) is a server connected to a network with the sole purpose of providing storage
EXTERNAL HARD DISK: is a separate freestanding hard disk that connects with a cable to a USB port or FireWire port on the system unit or communicates wirelessly.
REMOVABLE HARD DISK: is a hard disk that you insert and remove from a drive.
POCKET HARD DRIVE: external hard disks that are smaller in size and capacity, which also contain miniature hard disks.
DISK CONTROLLER: consists of a special-purpose chip and electronic circuits that control the transfer of data, instruction, and information from a disk to and from the system bus and other components in the computer.
SATA: (Serial Advanced Technology Attachment) uses serial signals to transfer data, instructions, and information. The primary advantage of SATA interfaces is their cables are thinner, longer, more flexible, and less susceptible to interference than cables used by hard disks that use parallel signals.
EIDE: (Enhanced Integrated Drive Electronics) is a hard disk interface that uses parallel signals to transfer data, instructions, and information. EIDE interfaces can support up to four hard disks at 137 GB per disk and also provides connections for optical disc drives and tape drives.
SCSI: interfaces, which also use parallel signals, can support up to eight or fifteen peripheral devices. Supported devices include hard disks, optical disc drives, tape drives, printers, scanners, network cards, and much more.
SAS: (Serial-Attached SCSI) is a newer type os SCSI that uses serial signals to transfer data, instructions, and information. Advantages of SAS over parallel SCSI include thinner, longer cables; reduced interferences; less expensive; support for many more connected devices at one; and faster speeds.
SOLID STATE MEDIA: consist entirely of electronic components such as integrated circuits and contain no moving parts. Types of flash memory include solid state drives, memory cards, USB flash drives, and ExpressCard modules.
SOLID STAT DRIVE (SSD): is a storage device that typically uses flash memory to store data, instructions, and information. With available sizes of 3.5 inches, 2.5 inches, and 1.8 inches, SSDs are used in all types of computers and devices such as portable media players and digital video cameras.
MEMORY CARD: is a removable flash memory device, usually no bigger that 1.5 inches in height or width, that you insert and remove from a slot in a computer, mobile device, or card reader/writer. Common types include CompactFlash (CF), Secure Digital (SD), Secure Digital High Capacity (SDHC), microSD, microSDHC, xD Picture Card, Memory Stick, and Memory Stick Micro (M2).
CARD READER/WRITER: a device that reads and writes data, instructions, and information stored on memory cards.
EXPRESSCARD MODULE: is a removable device, about 75 mm long and 34 mm wide or l-shaped with a width of 54 mm, that fits in an ExpressCard slot.
CLOUD STORAGE: is an Internet service that provides hard disk storage to computer users.
OPTICAL DISC: is a type of optical storage media that consists of a flat, round, portable disc make of metal, plastic, and lacquer. Optical discs primarily store software, data, digital photos, movies, and music.
LIGHTSCRIBE TECHNOLOGY: works with specially coated optical discs, to etch labels directly on the disc.
CD-ROM: or compact disc read only memory, is a type of optical disc that users can read but not write (record) or erase.
CD-ROM DRIVE: or a CD-ROM player
CD-R (compact disc-recordable): is a multisession optical disc on which users can write but not erase, their own items such as text, graphics, and audio.
BURNING: the process of users being able to record, or write, their own data on a disc with a CD-R or CD-RW drive.
CD-RW (compact disc-rewritable): is an erasable multisession disc you can wrtie on multiple times.
RIPPING: the process of copying audio and.or video ata from a purchased disc and saving it on digital media.
ARCHIVE DISC: stores photos in the jpg file format
PICTURE CD: stores digital versions of film using jpg file format
DVD-ROM: (digital versatile disc-read- only memory or digital video disc-read-only memory) is a high-capacity optical disc on which users can read but not write or erase.
HD VMD: (versatile multilayer disc) another high density format potentially will contain up to 20 layers, each with a capacity of 5GB.
UMD: (universal media disc) can store up to 1.8 GB of games, movies, or music.
TAPE: is a magnetically coated ribbon of plastic capable of storing large amounts of data and information at a low cost.
TAPE DRIVE: reads and writes data and information on a tape.
MAGNETIC STRIPE CARD: is a credit card, entertainment card, bank card, or other similar card, with a stripe that contains information identifying you and the card.
SMART CARD: stores data on a thin microprocessor embedded in the card. Smart cards contain a processor and have input, process, output and storage capabilities.
MICROFILM: is a 100-to-215-foot roll of film
MICROFICHE: is a small sheet of film, usually about 4x6 inches.
RAID: (Redundant Array of Independent Disks) a group of two or more integrated hard disks
NAS: (Network Attached Storage) is a server connected to a network with the sole purpose of providing storage
EXTERNAL HARD DISK: is a separate freestanding hard disk that connects with a cable to a USB port or FireWire port on the system unit or communicates wirelessly.
REMOVABLE HARD DISK: is a hard disk that you insert and remove from a drive.
POCKET HARD DRIVE: external hard disks that are smaller in size and capacity, which also contain miniature hard disks.
DISK CONTROLLER: consists of a special-purpose chip and electronic circuits that control the transfer of data, instruction, and information from a disk to and from the system bus and other components in the computer.
SATA: (Serial Advanced Technology Attachment) uses serial signals to transfer data, instructions, and information. The primary advantage of SATA interfaces is their cables are thinner, longer, more flexible, and less susceptible to interference than cables used by hard disks that use parallel signals.
EIDE: (Enhanced Integrated Drive Electronics) is a hard disk interface that uses parallel signals to transfer data, instructions, and information. EIDE interfaces can support up to four hard disks at 137 GB per disk and also provides connections for optical disc drives and tape drives.
SCSI: interfaces, which also use parallel signals, can support up to eight or fifteen peripheral devices. Supported devices include hard disks, optical disc drives, tape drives, printers, scanners, network cards, and much more.
SAS: (Serial-Attached SCSI) is a newer type os SCSI that uses serial signals to transfer data, instructions, and information. Advantages of SAS over parallel SCSI include thinner, longer cables; reduced interferences; less expensive; support for many more connected devices at one; and faster speeds.
SOLID STATE MEDIA: consist entirely of electronic components such as integrated circuits and contain no moving parts. Types of flash memory include solid state drives, memory cards, USB flash drives, and ExpressCard modules.
SOLID STAT DRIVE (SSD): is a storage device that typically uses flash memory to store data, instructions, and information. With available sizes of 3.5 inches, 2.5 inches, and 1.8 inches, SSDs are used in all types of computers and devices such as portable media players and digital video cameras.
MEMORY CARD: is a removable flash memory device, usually no bigger that 1.5 inches in height or width, that you insert and remove from a slot in a computer, mobile device, or card reader/writer. Common types include CompactFlash (CF), Secure Digital (SD), Secure Digital High Capacity (SDHC), microSD, microSDHC, xD Picture Card, Memory Stick, and Memory Stick Micro (M2).
CARD READER/WRITER: a device that reads and writes data, instructions, and information stored on memory cards.
EXPRESSCARD MODULE: is a removable device, about 75 mm long and 34 mm wide or l-shaped with a width of 54 mm, that fits in an ExpressCard slot.
CLOUD STORAGE: is an Internet service that provides hard disk storage to computer users.
OPTICAL DISC: is a type of optical storage media that consists of a flat, round, portable disc make of metal, plastic, and lacquer. Optical discs primarily store software, data, digital photos, movies, and music.
LIGHTSCRIBE TECHNOLOGY: works with specially coated optical discs, to etch labels directly on the disc.
CD-ROM: or compact disc read only memory, is a type of optical disc that users can read but not write (record) or erase.
CD-ROM DRIVE: or a CD-ROM player
CD-R (compact disc-recordable): is a multisession optical disc on which users can write but not erase, their own items such as text, graphics, and audio.
BURNING: the process of users being able to record, or write, their own data on a disc with a CD-R or CD-RW drive.
CD-RW (compact disc-rewritable): is an erasable multisession disc you can wrtie on multiple times.
RIPPING: the process of copying audio and.or video ata from a purchased disc and saving it on digital media.
ARCHIVE DISC: stores photos in the jpg file format
PICTURE CD: stores digital versions of film using jpg file format
DVD-ROM: (digital versatile disc-read- only memory or digital video disc-read-only memory) is a high-capacity optical disc on which users can read but not write or erase.
HD VMD: (versatile multilayer disc) another high density format potentially will contain up to 20 layers, each with a capacity of 5GB.
UMD: (universal media disc) can store up to 1.8 GB of games, movies, or music.
TAPE: is a magnetically coated ribbon of plastic capable of storing large amounts of data and information at a low cost.
TAPE DRIVE: reads and writes data and information on a tape.
MAGNETIC STRIPE CARD: is a credit card, entertainment card, bank card, or other similar card, with a stripe that contains information identifying you and the card.
SMART CARD: stores data on a thin microprocessor embedded in the card. Smart cards contain a processor and have input, process, output and storage capabilities.
MICROFILM: is a 100-to-215-foot roll of film
MICROFICHE: is a small sheet of film, usually about 4x6 inches.
Ch. 6 Definitions (part 1)
STORAGE MEDIUM: also called SECONDARY STORAGE, is the physical material on which a computer keeps data, instructions, and information.
CAPACITY: is the number of bytes (characters) a storage medium can hold.
STORAGE DEVICE: is the computer hardware that records and/or retrieves items to and from storage media.
READING: is the process of transferring these items from a storage medium into memory.
ACCESS TIME: measures the amount of time it takes a storage device to locate an ite, on a storage medium.
HARD DISK: is a storage device that contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information.
LONGITUDINAL RECORDING: aligned the magnetic particles horizontally around the surface of the disk.
PERPENDICULAR RECORDING: align the magnetic particles vertically, or perpendicular to the disk's surface, making much greater storage capacities possible.
CAPACITY: is the number of bytes (characters) a storage medium can hold.
STORAGE DEVICE: is the computer hardware that records and/or retrieves items to and from storage media.
READING: is the process of transferring these items from a storage medium into memory.
ACCESS TIME: measures the amount of time it takes a storage device to locate an ite, on a storage medium.
HARD DISK: is a storage device that contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information.
LONGITUDINAL RECORDING: aligned the magnetic particles horizontally around the surface of the disk.
PERPENDICULAR RECORDING: align the magnetic particles vertically, or perpendicular to the disk's surface, making much greater storage capacities possible.
Wednesday, October 5, 2011
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