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rad info 2
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| Question | Answer |
|---|---|
| what is LAN | local area network |
| definition of LAN | a computer network that interconnects computers in a limited area such as a home, school, computer laboratory or office building using network media |
| What is WAN | wide area network |
| definition of WAN | it links widely dispersed sites often leased, dedicated telecommunication lines |
| what is P2P | peer to peer network |
| definition of P2P network | 1. consists of several computers which are connected to each other 2. "network" consists of shared folders located on computers within the network |
| what is client server network | it uses a central server and specialized network software |
| the computers which connect to the server are called | clients |
| the server acts as a | hub |
| what is VPN | virtual private network |
| definition of vpn | is a private network that connects users via and therefore residing within a public network infrastructure (typically the internet). VPNs allow the users to communicate via the internet as if they are within LAN, WAN or intranet |
| what are internet routers | they are designed to connect portions of the network and enhance the efficiency of the overall network traffic and preventing "network jams" |
| what does the internet router do | it direct the stream of internet packets as they travel from source to destination |
| what is DNS | Domain Name Systems |
| what is internet addressing | 1. internet addressing are used by TCP/IP packets to get from source to destination 2. each computer on the internet has a dinstinct address |
| what is ICANN | Internet Corporation for Assigned Names and Numbers It is the governing body for the internet's naming system |
| what is SSL | secure socket layer |
| what are the 3 major components of SSL | 1. a request for communication 2. a software "handshake" agreement between browser and server 3. the establishment of a secure connection between the browser and sever |
| The establishment of the a secure connection between the browser and server is also known as | a pipe |
| what are computer worms | it is a virus that propagates through a "holes" in the software on a computer without any requirement for user action such as opening an email |
| what are trojan horses | a trojan horse code is activated when a user does something like download a software from the web that appears to be desirable but isn't |
| what are firewalls | it is a security system which prevents hackers from attacking through network interfaces |
| what is a malware | it is a generic name referring to a software products that behaves badly on one's computer |
| what is an adware | it is any software application responsible for the display of advertising on a user's computer |
| what is a spyware | it can record your keystrokes, surfing history, passwords and other confidential information |
| spyware is ________ than adware | more dangerous |
| what are page hijackers | they are programs that attempt to take control of the user's preferred homepage and replace it with one of the hijacker's choices |
| what is packet sniffing | it is when malicious parties tap into traffic crossing the internet and thereby gain access to confidential communications |
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