Quick Review Cards for Medical Laboratory Science

Computer Networks Laboratory Operations Review 45

TERM EXPLANATION

Local area network (LAN)

Wide area network (WAN)

Internet

Intranet

Extranet

Protocol

Ethernet

TCP/IP

Health Level 7 standard (HL7)

Computer network that connects computers in close geographic proximity (e.g., building, campus)

Computer network that connects computers over larger geographic area (e.g., multisite health-care

facility, Internet)

Global system of interconnected computer networks

Computer network within an organization. Access is usually restricted to employees.

Extension of a private network onto the Internet where it can be accessed by authorized clients,

suppliers, etc.

Common set of signals & rules that network uses for communication

One of the 1st protocols developed for connecting computers

Transmission Control Protocol/Internet Protocol. Originally developed as transfer protocol for

Internet; adapted for transmission in LANs.

Standardized message protocol that facilitates exchange of medical data among computer systems