Term
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Definition
| An impact printer that transfers characters by striking a pattern (from a matrix) through an inked ribbon and onto paper.The most common number of pins on a dot matrix printer is 9, 18, or 24.Common for carbon-copies. |
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Term
|
Definition
•The ink reservoir is in a disposable cartridge that includes the printing mechanism.
•Bubble jet printers print by heating the ink and squirting it through tiny nozzles in the print head and onto the paper.
•The crispness of an ink jet printer’s image is usually rated in terms of Dots per Inch or DPI. Ink jets range from 150 to over 1400 dpi.
•Ink jet printers feed single cut sheets of paper, from a feed tray, by clamping them between rollers and advancing them one print line at a time, from top to bottom, and then placing the newly printed paper into a tray, other than the feed tray. |
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Term
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Definition
| Laser printers are classified as page printers because they print text and graphics simultaneously one complete page at a time. |
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Term
Steps of Laser Printer:
1)Cleaning |
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Definition
| Cleans the photosensitive drum. |
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Term
Steps of Laser Printer:
2)Charging: |
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Definition
| Puts a uniform negative charge on the drum and then wipes the previous image. |
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Term
Steps of Laser Printer:
3)Writing: |
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Definition
| Writing is done with a laser beam striking the drum, then forming the image. |
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Term
Steps of Laser Printer:
4)Developing: |
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Definition
| Image is developed by attracting positive toner onto drum. |
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Term
Steps of Laser Printer:
5)Transferring: |
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Definition
| Transfer corona wire charges paper. Toner from drum transfers to paper. |
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Term
Steps of Laser Printer:
6)Fusing: |
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Definition
| Fuser roller heats the toner and then melts it. Pressure roller presses onto paper permanently. |
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Term
|
Definition
| A thermal printer is a non-impact printer that uses heat to cause a reaction on specially treated paper. |
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Term
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Definition
| is responsible for managing the flow of documents from the queue to the printer. When the printer is ready, the print server takes the next document out of the queue and sends it to be printed. |
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Term
|
Definition
| A virtual device (logical software entity) inside the print server that can be configured to send output to a printing device. The printer is made up of the print driver, the printing device, and the spooler. |
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Term
|
Definition
| The physical device connected to the print server where print output occurs. |
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Term
|
Definition
| The software that allows the printer to communicate with the print device. |
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Term
|
Definition
| The maximum length for an RS-232 serial cable is 50 feet. |
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Term
| Parallel Connectors (IBM Printer cable) |
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Definition
| (printer connectors)is a DB-25 on one end and 36 pin on the other |
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Term
| Parallel Connectors (IEEE 1284)Length and transfer rate? |
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Definition
| newer, bi-directional cable more commonly used. 10 meters (approx. 30 feet). 2 MB/s. |
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Term
| Parallel Connectors (IEEE 1284)Max daisy chain? |
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Definition
|
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Term
|
Definition
| Enhanced parallel port, specifies a half-duplex, bi-directional standard used by non-printing devices to send large amounts of data to the host. |
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Term
|
Definition
| Extended capabilities port,specifies a half-duplex, bi-directional standard that allows greater transfer speeds and compression. |
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Term
|
Definition
| 6-pin mini-din connectors,Keyboard - Purple. Mouse - green. |
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Term
| USB 1.0 - speed, transfer rate, and max length? |
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Definition
|
|
Term
| USB 1.1 - speed, transfer rate, and max length? |
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Definition
|
|
Term
| USB 2.0 - speed, transfer rate, and max length? |
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Definition
|
|
Term
| USB 3.0 - speed, transfer rate, and max length? |
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Definition
|
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Term
|
Definition
A - Rectangular
B - D Shaped (printers, peripheral devices)
Mini Connector - 4 Pin
Mini Connector - 5 Pin |
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Term
Ethernet IEEE 802.3
10Base5 |
|
Definition
| Coax Thick, 10 Mbps, 500m |
|
|
Term
Ethernet IEEE 802.3
10Base2 Thinet |
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Definition
|
|
Term
Ethernet IEEE 802.3
10BaseT |
|
Definition
| Twisted Pair, 10 Mbps, 100m |
|
|
Term
Ethernet IEEE 802.3
100BaseTX |
|
Definition
| Twisted Pair, 100 Mbps, varies in length |
|
|
Term
Ethernet IEEE 802.3
10BaseF |
|
Definition
| Fiber Optic, 10 Mbps, varies in length |
|
|
Term
Ethernet IEEE 802.3
100BaseF |
|
Definition
| Fiber Optic, 100 Mbps, varies in length |
|
|
Term
Wireless IEEE 802.11
802.11a |
|
Definition
| 5.75-5.85 GHz, 54 Mbps, 150 ft. |
|
|
Term
Wireless IEEE 802.11
802.11b |
|
Definition
| 2.4-2.4835 GHz, 11 Mbps, 300 ft. |
|
|
Term
Wireless IEEE 802.11
802.11g |
|
Definition
| 2.4-2.4835 GHz, 54 Mbps, 300 ft. (backward compatible with 802.11b) |
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|
Term
Wireless IEEE 802.11
802.11n |
|
Definition
| 2.4 GHz and 5 GHz,54 Mbps - 600 Mbps, 300 ft. |
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Term
|
Definition
| Service Set Identification |
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Term
|
Definition
| Wireless Equivalent Privacy |
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Term
|
Definition
| Wi-Fi Protected Access, better than WEP |
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Term
|
Definition
| needs line-of-site, up to 4 Mbps, max 30 meters |
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Term
|
Definition
| Personal Area Network(PAN), 2.4 GHz, up to 3 Mbps, Less interference, can be used for voice and data |
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|
Term
| Bluetooth Class 3 devices |
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Definition
|
|
Term
| Bluetooth Class 2 devices |
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Definition
|
|
Term
| Bluetooth Class 1 devices |
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Definition
|
|
Term
Common Boot Errors Codes
1xx: |
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Definition
|
|
Term
Common Boot Errors Codes
2xx: |
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Definition
|
|
Term
Common Boot Errors Codes
301: |
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Definition
|
|
Term
Common Boot Errors Codes
4xx: |
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Definition
|
|
Term
Common Boot Errors Codes
501: |
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Definition
|
|
Term
Common Boot Errors Codes
601: |
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Definition
|
|
Term
Common Boot Errors Codes
7xx: |
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Definition
|
|
Term
Common Boot Errors Codes
9xx: |
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Definition
|
|
Term
Common Boot Errors Codes
11xx: |
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Definition
|
|
Term
Common Boot Errors Codes
17xx: |
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Definition
|
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Term
|
Definition
| File Transfer Protocol; Ports 20 (transfer) & 21 (listen) |
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|
Term
|
Definition
| Secure Shell, alternative to Telnet, Port 22 |
|
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Term
|
Definition
| Remote Terminal Emulation, port 23 |
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Term
|
Definition
| Simple Mail Transfer Protocol (sending mail), port 25 |
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Term
|
Definition
| Domain Name System, Port 53 |
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Term
|
Definition
| Dynamic Host Configuration Protocol, port 68 |
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Term
|
Definition
| HyperText Transfer Protocol, port 80 |
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Term
|
Definition
| Post Office Protocol 3 (receive mail), port 110 |
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Term
|
Definition
| Internet Message Access Protocol (IMAP), Port 143 |
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Term
|
Definition
| HyperText Transfer Protocol over Secure Socket Layer or HTTP over SSL; Port 443 |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Windows Internet Name Service, DNS for Windows, DNS should always be used over WINS |
|
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Term
|
Definition
| IPX/SPX is the protocol suite used on legacy NetWare networks. |
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Term
|
Definition
|
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Term
|
Definition
| Traces the route, includes number of hops to destination router |
|
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Term
| Communication between hosts; Simplex |
|
Definition
| one-way communication from a sender to a receiver |
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|
Term
| Communication between hosts;Half-duplex |
|
Definition
| two-way communication between two hosts. Communication only travels in one direction at a time. |
|
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Term
| Communication between hosts;Full duplex |
|
Definition
| two-way communication between hosts. Communication can travel in both directions simultaneously |
|
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Term
|
Definition
| 1.0.0.0 to 126.255.255.255, Default Subnet mask - 255.0.0.0 |
|
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Term
|
Definition
| 128.0.0.0 to 191.255.255.255, Default Subnet mask - 255.255.0.0 |
|
|
Term
|
Definition
| 192.0.0.0 to 223.255.255.255, Default Subnet mask - 255.255.255.0 |
|
|
Term
|
Definition
| 224.0.0.0 to 239.255.255.255, Default Subnet mask - Multicast |
|
|
Term
|
Definition
| 240.0.0.0 to 255.255.255.255, Reserved |
|
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Term
|
Definition
| 169.254.0.1 to 169.254.255.254, Assigned to a host that cannot contact a DHCP server. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| 4 connectors,phone line, dial-up |
|
|
Term
|
Definition
| 8 connectors, Ethernet and token ring connections |
|
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Term
|
Definition
| 10 megabit Ethernet or 16 megabit token ring. |
|
|
Term
|
Definition
| Supports 100 megabit and 1 gigabit Ethernet and ATM networking. |
|
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Term
|
Definition
| better EMI protection. Supports 1 and 10 gigabit Ethernet |
|
|
Term
|
Definition
| Supports high-bandwidth, broadband communications.gigabit Ethernet |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Molded onto the cable, Used in 10Base2 Ethernet networks |
|
|
Term
|
Definition
| DB15 serial connector, Used in 10Base5 Ethernet networks |
|
|
Term
|
Definition
| 10Base2 Ethernet networking (also called Thinnet); 50 ohms |
|
|
Term
|
Definition
| Cable TV and cable networking, 75 ohms |
|
|
Term
|
Definition
| Satellite TV, Digital Cable, High Speed Networking, 75 ohms |
|
|
Term
|
Definition
| 10Base5 Ethernet networking (also called Thicknet); 50 ohms |
|
|
Term
|
Definition
•Transfers data through the core using a single light ray (the ray is also called a mode)
•The core diameter is around 10 microns
•Supports a large amount of data
•Cable lengths can extend a great distance |
|
|
Term
|
Definition
•Transfers data through the core using multiple light rays
•The core diameter is around 50 to 100 microns
•Cable lengths are limited in distance |
|
|
Term
| Fiber Optic Connector Types |
|
Definition
| ST Connector and SC Connector |
|
|
Term
|
Definition
| Public Switched Telephone Network, Uses a single POTS (Plain Old Telephone Service) phone line with a modem. |
|
|
Term
|
Definition
| Digital Subscriber Line; Sends digital signals over existing copper telephone wire using multiple channels; ADSL and HDSL |
|
|
Term
|
Definition
| Integrated Services Digital Network,Digital service over existing copper telephone line |
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|
Term
|
Definition
•Uses a high-speed bi-directional channel connected directly to an Internet Service Provider (ISP) through cable TV lines.
•Uses a cable modem to convert analog signals over multiple channels. |
|
|
Term
|
Definition
| Requires direct line of sight, Is subject to mild atmospheric and weather conditions, high latency |
|
|
Term
|
Definition
| Internet access in remote areas, connects to cellular phone towers |
|
|
Term
|
Definition
| Voice over Internet Protocol, sends voice phone calls using the TCP/IP protocol over digital data lines |
|
|
Term
|
Definition
| a network device installed on the border of secured networks that acts as a barrier or filter |
|
|
Term
|
Definition
|
|
Term
|
Definition
| are devices used to link several computers together |
|
|
Term
|
Definition
| smart hubs, they don't repeat the data to all hosts. |
|
|
Term
|
Definition
| join similar topologies and are used to divide network segments. Bridges keep traffic on one side from crossing to the other. |
|
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Term
|
Definition
| Intelligent devices that connect multiple networks. |
|
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Term
|
Definition
| same as routers but only route on particular protocol |
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|
Term
Command Line Utilities
convert |
|
Definition
Converts a drive from FAT or FAT32 to NTFS w/o losing any data
•convert C: /fs:ntfs |
|
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Term
|
Definition
Use the cd command to work with the current directory. Common switches used with cd are:
•cd by itself shows the current directory (the current directory is usually showed in the command prompt as well).
•cd [folder name] changes the current directory to the one specified (if the directory is within the current directory).
•cd [full path] changes to the directory specified by the path.
•cd .. changes the current directory to the immediate parent directory (moves up one directory level).
•cd /D [file] [path] changes the current drive in addition to changing the directory. |
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|
Term
Command Line Utilities
dir |
|
Definition
Use the dir command to display a list of files and subdirectories in a directory. Common switches used with dir are:
•dir /p pauses output at every page.
•dir /s display information in subdirectories.
•dir /a[xx] display files with the specified attributes:
o Options may be combined, such as /arh, to show read-only, hidden files.
o Use - to show files without an attribute. For example, dir /a-r shows files that are not read only. |
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|
Term
Command Line Utilities
md mkdir |
|
Definition
Use the md command to create (make) a directory. Common switches used with md are:
•md [directory] creates a new directory in the current directory.
•md [path] [directory] creates a new directory in the directory specified by the path. |
|
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Term
|
Definition
Use the rd command to delete (remove) a directory. Common switches used with rd are:
•rd [directory] removes the specified directory within the current directory.
•rd [path] [directory] removes the directory specified in the path.
•rd /s removes subdirectories in addition to files in the current directory.
•rd /q will not prompt you before each deletion. |
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|
Term
Command Line Utilities
copy |
|
Definition
Use the copy command to copy files from one location to another. Common switches used with copy are:
•copy [source] [destination] copies the specified file to the new location.
•copy [folder] [*.*] [path] [destination] copies all files with extensions in a folder to the new location.
•copy /n copies files using short filenames.
•copy /y will not prompt you before each deletion.
•copy /v verifies files after they are copied. |
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|
Term
Command Line Utilities
xcopy |
|
Definition
Use the xcopy command to copy files and directory trees. Common switches used with xcopy are:
•xcopy /a copies files with the archive attribute set and doesn't change the attribute.
•xcopy /m copies files with the archive attribute set and turns off the archive attribute.
•xcopy /d copies files changed on or after the specified date. If no date is given, it copies only those files whose source time is newer than the destination time.
•xcopy /p prompts you before creating each destination file.
•xcopy /s copies directories and subdirectories (except empty ones).
•xcopy /e copies directories and subdirectories, including empty ones.
•xcopy /h copies hidden and system files also.
•xcopy /r overwrites read-only files.
•xcopy /k copies attributes. Normal xcopy will reset read-only attributes.
•xcopy /y overwrites existing files without prompting. |
|
|
Term
Command Line Utilities
edit |
|
Definition
Use the edit command to view, create, or modify files. Common switches used with edit are:
•edit [file] specifies initial files(s) to load. Wildcards and multiple file specs can be given.
•edit /r load file(s) in read-only mode. |
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|
Term
Command Line Utilities
ipconfig |
|
Definition
The IPCONFIG command checks your computer’s IP configuration.
•/all shows full configuration information
•/release releases the IP address, if you are getting addresses from a DHCP server
•/renew obtains a new IP address from a DHCP server
•/flushdns flushes the DNS name resolver cache |
|
|
Term
|
Definition
| For Laptops 144 Pin and 200 Pin |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| SDRAM (Synchronous Dynamic RAM) |
|
Definition
|
|
Term
| SIMM (single in-line memory module) |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| Programmable Read-only Memory |
|
|
Term
|
Definition
| Erasable Programmable Read-only Memory |
|
|
Term
|
Definition
| Electrically Erasable Programmable Read-only Memory; also known as Flash Memory |
|
|
Term
|
Definition
Static RAM
•No refresh required (non-volatile, meaning that no power is required to retain memory contents)
•Comes on motherboard (cache memory) as chips, or COAST (cache-on-a-stick) modules
•No memory addresses assigned |
|
|
Term
|
Definition
Dynamic RAM
•Requires constant refresh (volatile, meaning that power is required to retain memory contents)
•Memory addresses assigned
•Used as the main system memory and memory on other components
•Is slower than SRAM |
|
|
Term
|
Definition
| Consists of a metal screen full of holes that are aligned with each dot. The screen shields the electron beam from illuminating between dots and leaves an outline around each pixel |
|
|
Term
|
Definition
| Consists of a screen of ultra thin vertical and horizontal wires. This configuration allows more electrons through resulting in a richer colour display. On an aperture grill monitor you might be able to see two horizontal lines running across the display. These lines are the wires that are used to dynamically change the grill opening. |
|
|
Term
|
Definition
| is the distance between pixels |
|
|
Term
|
Definition
| amount of time required for the CRT's electron beam to paint the screen from top to bottom |
|
|
Term
|
Definition
| drawing the screen in two passes; even lines on the first and then the odd lines on the second pass. Non-interlaced monitors produce the least amount of flicker. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Non-interlaced 1024 x 768 |
|
|
Term
|
Definition
| (Super Extended VGA) = 1280 x 1024 |
|
|
Term
|
Definition
| (Ultra Extended VGA) = 1600 x 1200 |
|
|
Term
|
Definition
| (Super Extended Graphics Array Plus)= 1400×1050 |
|
|
Term
|
Definition
| (Widescreen Super Extended Graphics Array Plus) = 1680×1050 |
|
|
Term
|
Definition
| (Widescreen Ultra Extended Graphics Array)= 1920×1200 |
|
|
Term
|
Definition
| the ratio of the width and the height |
|
|
Term
|
Definition
|
|
Term
|
Definition
| difference in light intensity between the brightest white and the darkest black |
|
|
Term
|
Definition
| indicates how quickly a pixel can go from black, to white, and back to black. |
|
|
Term
|
Definition
| The platter or set of platters that magnetically hold data. |
|
|
Term
|
Definition
| The spaces between concentric circles emanating from near the center of the platter and outward. |
|
|
Term
|
Definition
| The spaces (pie shaped) in between equally spaced lines that emanate from the center to the outside edge of the platter. These sectors are either physically (on the platter) or logically (determined by software) grouped and like data is often clustered together to increase read and write time. |
|
|
Term
|
Definition
| The mechanism and mechanical arm that physically moves across tracks and sectors to read or write data. There are usually two (one on each side) of these per platter. |
|
|
Term
|
Definition
| time taken for a read-write head to reach a particular item of data on a disk track. |
|
|
Term
|
Definition
| the time taken by a computer, after an instruction has been given, to read from or write to memory. |
|
|
Term
|
Definition
| the time it takes for the selected sector to be positioned under the read/write head. |
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