Flashcards in Information Technology 2 Deck (18):
What are the risks of E-commerce?
Compromised data or theft.
Less paper trail for auditors.
What are the benefits of Electronic Data Interchange?
Uses globally-accepted standards
What is a File Server?
A file server stores shared programs and documents.
What is the purpose of a Database?
Located on a File Server- a Database allows users to share documents.
What is the purpose of a LAN (Local Area Network)?
It connects computers in close proximity.
What is the purpose of a WAN (Wide Area Network)?
It connects computers that are far apart.
What are the characteristics of a VAN (Value-Added Network)?
Serves as 3rd Party Between 2 Companies
Routes EDI Transactions
Accepts wide range of Protocols
What is the purpose of a Firewall?
Prevents unauthorized access to a network.
What are the characteristics of a virus?
Takes over a computer
Needs a host program to run
What are the characteristics of a computer worm?
Takes over multiple computers
Doesn't need a host program to run
What is the purpose of Automated Equipment Controls?
They prevent and detect hardware errors.
What is RAM?
Random Access Memory.
Internal memory in the computer used during immediate processing.
What is a CPU?
Computer Processing Unit
It processes commands within a computer.
What is Job Control Language?
It schedules and allocates system resources.
What are examples of input devices?
Magnetic Ink Reader
Magnetic Tape Reader
Point of Sale Scanner
What are examples of Output Devices?
What are the characteristics of Magnetic Tape storage?
Sequential Access - Sorts data in order
Slower data retrieval
Header Label prevents Operator error by loading wrong tape
External Labels prevent accidental destruction by operator