Information Technology 2 Flashcards Preview

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Flashcards in Information Technology 2 Deck (18):
1

What are the risks of E-commerce?

Compromised data or theft.

Less paper trail for auditors.

2

What are the benefits of Electronic Data Interchange?

Uses globally-accepted standards

Efficient

3

What is a File Server?

A file server stores shared programs and documents.

4

What is the purpose of a Database?

Located on a File Server- a Database allows users to share documents.

5

What is the purpose of a LAN (Local Area Network)?

It connects computers in close proximity.

6

What is the purpose of a WAN (Wide Area Network)?

It connects computers that are far apart.

7

What are the characteristics of a VAN (Value-Added Network)?

Privately-owned Network

Serves as 3rd Party Between 2 Companies

Routes EDI Transactions

Accepts wide range of Protocols

Very Costly

8

What is the purpose of a Firewall?

Prevents unauthorized access to a network.

9

What are the characteristics of a virus?

Takes over a computer

Needs a host program to run

10

What are the characteristics of a computer worm?

Takes over multiple computers

Doesn't need a host program to run

11

What is the purpose of Automated Equipment Controls?

They prevent and detect hardware errors.

12

What is RAM?

Random Access Memory.

Internal memory in the computer used during immediate processing.

13

What is a CPU?

Computer Processing Unit

It processes commands within a computer.

14

What is Job Control Language?

It schedules and allocates system resources.

15

What are examples of input devices?

Keyboard
Mouse
Scanner
Magnetic Ink Reader
Magnetic Tape Reader
EDI
Point of Sale Scanner

16

What are examples of Output Devices?

Speakers

Monitors

Printers

17

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

18

What are the characteristics of Magnetic Disks?

Random Access - Finds data in random spots

Faster data retrieval

Uses Boundary Protection for data