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UDP
User Datagram Protocol
Part of the internet protocol suite used by programs running on different computers on a network. UDP is used to send short messages called datagrams. Overall it is an unreliable connection less protocol.
TCP/IP
Transport layer
Sets up the communication between two hosts.
during this process the host devices agree settings such as language and packet size.
Biometric measures
A form of identification and authentication that compares scans of a users face, fingerprints, retina etc with a stored scan.
Flowchart
A method of designing algorithms using symbols before coding
Bubble sort
Simple and popular with inexperienced programmers but inefficient for sorting large amounts of data as the time it takes to sort depends on the length of the list.
Variable
A location in memory that stores a value that can change as the program runs
String manipulation
Commands and techniques that allow you to alter and extract information from textual strings.
SQL:Update
An sql keyword used to update an entry in the table
Sound file size
The total size of a sound file in storage.
Size in bits = sampling rate * sample resolution * number of seconds
Hex
A numerical system of notation that uses 16 as its base rather than 10
0-9 and A-F
Note 
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