1.3.3 and 1.3.4 - Networks and Web technologies Flashcards
What is a protocol?
A set of rules for communication across devices
What is a standard?
A set of hardware that allow manufacturers to create products that are compatible with each other
How many bits is IPV4?
32 bits
What is IPV4 written in?
In decimals
How many bits is IPV6?
128
What is IPV6 written in?
Hexadecimal
What does IPV6 allow the internet to do?
Grow as more resources are available
Give 2 advantages of IPV6?
- More possibilities for IP addresses
- More unique IP addresses available
What does a web server do?
Checks and then interprets a URL
What are 3 advtantages of a network?
- Users can share files
- Users can communicate with people
- Users can access files from any computer on the network
What are 3 disadvantages of a network?
- Increases security risk to data as malware and viruses spread very easily
- Computers may run slower if there is a lot of data travelling on a network
What happens if we didn’t have standards?
Most devices wouldn’t be able to communicate with one another
What does TCP stand for?
Transmission Control Protocol
What is the purpose of the TCP?
Provides error-free transmission between two routers
What does IP stand for?
Internet Protocol
What is the purpose of the IP?
Routes packets across a WAN
What deos UDP stand for?
User Datagram Protocol
What is the purpose of the UDP?
Sends short messages using datagrams
In the UDP, what is speed more important than?
Accuracy
What does HTTP stand for?
Hypertext Transfer Protocol
What is the purpose of the HTTP?
A way for a client to send and recieve requests and deliver HTML web pages
What is the purpose of the HTTPS?
The same as HTTP expect it adds in encryption and authentication
What does FTP stand for?
File Transfer Protocol
What is the purpose of the FTP?
Used for sending files between computers
What does POP stand for?
Post Office Protocol
What is the purpose of the POP?
To retrieve emails from a mail server and transfer them to your device while removing them from the server in the process
What does IMAP stand for?
Internet Message Access Protocol
What is the purpose of the IMAP?
To keep emails on the mail server
What does SMTP stand for?
Simple Mail Transfer Protocol
What is the purpose of the SMTP?
To transfer outgoing emails between servers and from email clients to servers
What are HTTP and HTTPS fundamental protocols of?
The WWW
What does the UDP use?
A simple, connectionless transmission model
What is a alternative to the TCP?
UDP
What are 2 disadvantages of the UDP?
- Has no error checking
- Less reliable than the TCP
What is the FTP normally used on?
A WAN
