topic 3 comp sci :)

Network General

100

a network that connects devices within a limited area

Local Area Network (LAN)

200

a network that connects devices within a person's immediate proximity (a few meters)

personal area network (PAN)

300

type of the network the internet is

wide area network (WAN)

400

a network that allows remote users to securely access a private network over a public network

virtual private network (VPN)

500

the benefit of WLAN versus LAN

lack of wires

Network Components

100

forwards data between IP addresses

routers

200

directs data to its destintation

switches

300

large powerful computer that is used to manage devices and data flow on a network

server

400

used to change the medium of transfer

bridges

500

like a normal server but has the additional feature of managing data between the LAN and WAN

proxy server

Network Standards

100

standards provide a framework for implementing security measure and protocol that can protect networks from attacks and unauthorized access

security protocols

200

standards provide a consistent and reliable way to build networks, ensuring computers are with each other and work as expected

reliability protocols

300

standards help ensure that network can grow and evolve over time

scalability protocols

400

standards help foster innovation by creating a level playing field for companies to compete and innovate within

innovation protocols

500

standards that ensure different devices and software can communicate and work together effectively

interoperability protocols

OSI Model

100

OSI stands for....

open system interconnection

200

what is the point of osi?

describes how data is trasmitted between networked devices

300

the seven layers

physical, data link, network transport, session, presentation, and application

400

what is difference between session and transport?

The transport layer isn't concerned if the computers are already in communication or not, it simply sends packets back and forth. The session layer organizes this start and stop traffic into an overall session between the two endpoints with a specific start and end point.

500

what is the highest layer of OSI and what does it do?

highest layer is Application layer. it is responsible of providing application service to users and includes all the protocols and services that support applications

VPNs

100

what is VPN?

technology that allows you to create a secure and encrypted connection between your computer and a remote server over the internet

200

list 3 advantages

security, privacy, access to restricted content, remote access, cost savings

300

what is encapsulation

wrapping a packet inside another packet

400

how do VPNs provide privacy

by going through a server not located in the same area as you and hides your IP address

500

what is tunneling?

process of encapsulation one protocol with another protocol for secure data transmission over a insecure network