Section 2: Network Basics Flashcards
What is 5 9’s of availability in networking?
The expectation that a network will be up and available for 99.999% of the time
Define: Client
A device used by an end-user to access the network
Define: Server
A device that provides resources to the rest of the network
Define: Hub
Older technology that connects network devices together
Define: Wireless Access Point (WAP)
A device that allows wireless devices to connect into a wired network
Define: Switch
A device that connects network devices together (like a smart and next generation hub)
Define: Router
Connects two different networks together and forwards traffic to and from a network
Define: Media
Connects two decives or a device to a switch port. Ex- cables
Wide Area Network (WAN) Link
Physically connects two geographically dispered networks. Mostly connects internal network to an external one
Define: Client/Server Model
A model that uses a dedicated server to provide access to files, scanners, printers, and other resources
What are the benefits of a Client/Server model?
- Centralized Administration
- Easier management
- Better scalability
What are the drawbacks of a Client/Server model?
- Higher cost
- Requires specialized OS
- Requires dedicated resources
Define: Peer-to-Peer Model
A model where peers/devices share resources (files/printers) directly with others
What are the benefits of Peer-to-Peer model?
- Lower cost
- No dedicated resources
- No specialized OS
What are the drawbacks of Peer-to-Peer model?
- Decentralized management
- Inefficient for large networks
- Poor scalability
Define: Personal Area Network (PAN)
Smallest type of wired or wireless network and covers the least amount of area. Usually covers about 10ft or less. ex: Bluetooth, USB
Define: Local Area Network (LAN)
Connects components within a limited distance. Usually covers upto a few hundred feet. Like small office or an apartment. ex: Internal wired or wireless connection in office or school
Define: Campus Area Network (CAN)
Connects LANs that are building-ventric across a university, industrial park, or business park. Usually covers up to a few miles. ex: wired or wireless connection in college campuses, business parks, military bases
Define: Metropolitan Area Network (MAN)
Connects scattered locations across a city or metro area. Usually covers upto about 25 miles. ex: College with campuses throughout a city
Define: Wide Area Network (WAN)
Connects geographically disparate internal networks and consists of leased lines or VPNs. Can have worldwide coverage. ex: Internet, office in new york and california connected with a private internet
What are the two ways in which a network topology can be discussed?
- Physical topology (How devices are connected by media)
- Logical topology (How the actual network traffic flows)
Define: Bus Topology
Uses a single cable where each device taps into by using either a vampire tap or a T-connector
Define: Ring Topology
Uses a cable running in a circular loop where each device connects to the ring but data travels in a singular direction
