NETWORKS Flashcards
What is a Hub?
Layer 1; connects segments of a LAN
What is a Switch?
Layer 2; device that acts like a hub; can also route
What is a Router?
Layer 3; connects two or more computer networks
Layers of Routing; Describe ACCESS.
“The Desktop Layer”.
Layers of Routing; Describe DISTRIBUTION.
“The Workgroup Layer”.
Layers of Routing; Describe CORE.
“Backbone of the Network”.
Describe BUS Topology:
Utilizes coaxial cable. Data flows to every terminal.
Describe STAR Topology:
Most common. Computers connected to central switch.
Describe RING Topology:
Computers connected to each other. Data passes around ring until the destination is found.
Describe MESH Topology:
Interconnects every device on network. Rare; expensive.
Define LAN:
Local Area Network
Define WAN:
Wide Area Network
Define MAN:
Metropolitan Area Network
Define GAN:
Global Area Network
List the layers of the OSI Model:
7 Layers,
- Physical
- Data Link
- Network
- Transport
- Session
- Presentation
- Application
List the layers of the TCP/IP Model:
4 Layers;
- Network Interface
- Internet
- Transport
- Application
State the difference between IPv4 and IPv6:
IPv4-32 bit
IPv6-128 bit
Define NIPRNET:
Non-Secure Internet Protocol Router Network
Define SIPRNET:
Secure Internet Protocol Router Network
Define JWICS:
Joint Worldwide Intelligence Communications System
What is NMCI?
Navy and Marine Core Intranet; CONUS
What is ONENET?
OCONUS Internet
What is IT21?
Ship Based tactical and warfighting network
Give examples of High-Level Language:
Apple Script, C++, Java, Squirrel, Visual Basic
