Internet Flashcards
_______ was the first country to luanch a satellite into the orbit
Soviet Union
US military in1962 launced____ in response to the soviet unions sputnik 1
DARPA - Defense advanced research projects agency
What was the mission of DARPA?
keep U.S. technologically ahead of it’s enemies
created ARPANET
US created ______ which is the 1st wide-area packet switched network
ARPANET:Advanced Research Projects Agency Network(ARPANET)
ARPANET was started in _____ and went live on _____
Caifornia, October 29th 1969
The term internet first appeared in year _____
1974
Messages sent across computers are often broken into smaller pieces called _____
Packets
each packet is sent or routed from point to point using ______
routers
A_____ is a set of rules adhered when 2 computers are talking to each other
network protocol
What details do the network protocols cover?
- how to determine if a packet is lost
- how to reassemble the packets
- how to identify a compouter on the network
- how big should each packet be?
- how do we route a packet across network
A collection of protocols is called
protocol suite
_____ allows cross-network communication
TCP/IP - Transmission control protocol or internet protocol
_____ breaks messages into packets
TCP
Host systems called___ dtermine how to route the message/packet
routers
Internet protocol is all about ______ and ______
address and delivery
each internet computer host has a unique____
IP address
IP address comprises of ______ and each set contains numbers from 0 to ____. It is separated into classes
four, 255 and A to E
How many IPv4 addresses are available as of 2011
4.3 billion
What is the difference between static vs dynamic IPv4
When a device is assigned a static IP address, the address does not change. Most devices use dynamic IP addresses, which are assigned by the network when they connect and change over time.
When was IPv6 started?
1998
_____ translates domain names into internet address
domain name system
Domain name system began in _____
1983
What is the DNS hierarchy?
DNS hierarchy comprises of the following:
1. root level
2. top level domain
3. Second level domain
4. sub-domains
How do the DNS and Internet routers work to deliver from a Domain
- browser wants to connect to a domain
- dns returns ip
- browser requests to web server
- web server returns index.html
Difference between internet and world wide web
internet - a global interconnected network of computer networks that transmit data by packet switching
www - is a collection of multimedia hyperlinks
what services does the internet provide?
Electronic mail (send/receive mail messages)
Remote login (Telnet - access to other computers)
File transfer (ftp)
WWW
Talk/chat (instant messenger)
Video conference
VoIP
What are the 2 web protocols?
HTML and HTTP
______ is used for transferring web pages
HTTP
_____ is usd for encoding and displaying documents
HTML
how does a server know if its receiving a ftp/http/e-mail request?
ports
The IP interprets the web address called ______ to find a file on the interne or the one u entered
Universal resource locator
_____ specify the type of communication?
port numbers
Where are the port numbers located?
header of the packet
