Copy of The Internet: Crash Course Computer Science #29

Which of the following correctly states the roles of IP and UDP?

IP gets the packet to the right computer, but UDP gets the packet to the right program running on that computer.

Which of the following is an advantage of TCP/IP?

It can receive data packets out of order.

What does the trace route program on your computer do?

It is a network tool used to show the route taken by packets across an IP (internet protocol) network.

Which of the following shows the seven (7) layers of the OSI (Open System Interconnection model) in the correct order from lowest to highest? 1. 2. 3. 4. 5. 6. 7.

1. physical 2. data link 3. network 4. transport 5. session 6. presentation 7. application

What is IP?

A low level protocol consisting of a destination address in the packet header and a data payload.

What is your LAN (local area network)?

Every device in your home connected to your wi-fi router.

What is DNS (Domain Name System)?

The phonebook of the Internet, mapping domain names to IP addresses

provide an example where UDP is more desirable than TCP/IP for data transmission.

UDP doubles the amount of packets you can receive making video games and other times programs run smoother.

What is checksum?

a value that represents the number of bits in a transmission message to verify data integrity or a string of numbers and letters that's used to "check" whether data or a file has been altered during storage or transmission

What information is needed for a computer to connect to a website?

an IP address AND a port number