CHAPTER 7 - NETWORKS Flashcards
1 NETWORKS
Links multiple computer systems and enables them to share data and resources
2 WHAT IS LAN? LAN CONSIST OF ….
- LOCAL AREA NETWORK
- Consist of :
+ CAN (Campus Area Network)
+ HAN (Home Area Network)
+ PAN (Personal Area Network)
3 LAN
- Uses cables, radio waves, or infrared signals.
- Links computers in a limited geographic area.
4 MAN
- Designed for a city
- Larger than a LAN, smaller than a WAN
5 WAN
- Uses long-distance transmission media
- Links computer systems a few miles or thousand of miles
- Internet is the largest WAN
6 CAN
- Several LANs located in various locations on a college or business campus
- Smaller than a WAN
- Use devices such as switches, hubs, and routers
7 PAN
- Network of individual’s own personal devices
- Usually within a range of 32 feet
- Usually use wireless technology
8 COMMUNICATION DEVICES
- Convert data into signals to travel over a medium. Consist of: \+ Computers \+ Modems \+ Routers \+ Switches \+ Hubs \+ Wireless access points \+ Network Interface Cards (NICs)
9 NODE
Any devices connected to a network
10 LOGICAL ADDRESS
Unique address assigned to each node on the network
11 PHYSICAL ADDRESS
- Unique numeric that identifies each node on the network built into the hardware
- Data Link Control/Connection Identifier (DLCI)
- Media Access Control (MAC)
12 NETWORK INTERFACE CARD (NIC)
- Expansion board or adapter that provides connection between the computer and the network
- Notebook computer have wireless NICs
13 USB WIRELESS NETWORK ADAPTER
- Plus into a USB port
- Usually provides an intuitive graphical user interface (GUI) for easy configuration
14 USB DONGLE
- Device inserted into a USB port that adds additional features to the base system.
- Examples: enabling network connectivity and increasing RAM
15 WIRELESS PC CARD ADAPTER
- About the size of a credit card
- Inserted into a slot on the side of most notebooks and netbooks
- Has built-in WiFi antenna that provides wireless capability
- LED lights that indicate whether the computer is connected
16 HUB
- Joins multiple computers together in a single network
- Does not manage traffic between the connections
17 SWITCHES
- Filter and forward data between nodes
- Are similar to routers but work within a single network
18 ROUTERS
- Connect two or more networks
- Inspect the source and target of a data package
- Determine the best route to transmit data
19 WIRELESS ACCESS POINT (WAP)
- Receives and transmit radio singals
- Joins wireless nodes to a wired network
20 SERVER
- Computer or device with software that manages network resources, such as files, e-mails, printers, databases
21 FILE SERVER
- Most common type of server
- High-speed computer that provides program and data files to network users
- Contains the network operating system (NOS)
22 NOS
- File directions for file and resources location on the LAN
- Automated distribution of software updates to desktop computers on the WAN
- Internet services support
- Protection of services and data
- Access to connected hardware by authorized users
23 NETWORK ADMINISTRATOR
- Also called network engineer
- Installs, maintains, supports computer networks
- Interacts with users
- Handle security
- Troubleshoot problems
