B Flashcards
Backup schedule
X
Backing storage
X
Backup server
X
Backup strategy
X
Bandwidth
Bandwidth describes the amount of data which can be transmitted via a network connection, usually measured in bits per second.
Bandwidth consumption
X
Bi-Directional
Transfers data in both directions.
Binary number system
A system in which numbers are represented using only the digits 0 and 1.
Bit
A single unit of binary data.
Bit-depth
The number of bits used to represent each pixel.
Bitmap
A representation of image data where each bit corresponds to an individual pixel on the screen.
Bitmap graphics
X
Bitmap - 24-bit
X
Bit-mapped graphic data
X
Bluetooth
Bluetooth is a wireless networking protocol which allows devices to connect together to provide services like Internet access, printing and data transfer without the intervention of the user.
Boolean variables
Two-state algebra developed by George Boole.
X
Boot Program
A small program held in ROM that is executed when the computer is powered up.
Boot sector virus
X
Bootstrap loader
X
Breadth-first search
X
Broadcasting
Broadcasting over a network uses the User Datagram Protocol which does not require an acknowledgment. This is a more efficient use of bandwidth than individual downloads.
Browser
Software used to render HTML pages.
Bubble Jet Printer
Operates by heating the ink until it forms a vapourised bubble which is then squirted as a tiny droplet of ink onto a page.
Buffer
A part of memory used to hold data when communicating with a peripheral. Used when a fast acting part of the system (CPU) is exchanging data with a slow acting device (printer).
Bus Network
Each device on the network is directly connected to a single communications line.
Bus topology
X
Byte
Eight units of binary data (bits).
Beta testing
Testing of software outside the development organisation using clients or selected members of the public.
Bottom-up design
A method of program refinement that starts with individual modules and builds them up into a complete program.
Boundary testing
Running a program with test data that represents the extreme upper and lower values.
Within this range the program should operate normally.
Bugs
A bug is a program error.
Bytecode
This is produced by JavaScript and is a form of machine code that runs under the Java virtual environment.
The latter is freeware and enables any computer to run Java programs
