NAVEDTRA 14194A Flashcards
What is a collection of related elements or items, that when properly coded into some type of input medium, can be processed by a computer?
Data
Using an 8-bit code, it is possible to represent how many different characters or bit combinations?
256
What provides an internal means for checking the validity, the correctness, of code construction?
Parity bit
What represents the smallest unit of data?
Bit
Eight bits are equal to what?
Byte
What is a group of related bytes that are treated as a single addressable unit or entity in memory known as?
Word
What is one or more related characters that are treated as a unit of information known as?
Field
What is a group of related fields, all pertaining to the same subject; a person, a thing, or an event called?
Record
What is a collection of related records called?
File
Data files may be stored on or in sequential-access storage, direct-access storage, or what type of storage?
Random-access
What can be defined as any system composed of one or more computers and terminals?
Network
Various machines are linked together within a building or adjacent buildings in what type of network?
LAN
What type of communications channel uses the basic frequency band of radio waves and a coaxial cable?
Baseband
What type of networks provide for global connections and are sometimes referred to as global networks?
WAN
What converts the digital signal produced by your terminal or the computer to an audio signal suitable for transmission over the communications line?
Modem
