The Internet

Computing Device:

• A sequence of direct connections

• A machine that can run a program

• A group of connected computers that can send and receive data

• A group of computers that workin together for a common purpose

Computing System:

• A sequence of direct connections

• A machine that can run a program

• A group of connected computers that can send and receive data

• A group of computers that workin together for a common purpose

Computing Network:

• A sequence of direct connections

• A machine that can run a program

• A group of connected computers that can send and receive data

• A group of computers that workin together for a common purpose

Path:

• A sequence of direct connections

• A machine that can run a program

• A group of connected computers that can send and receive data

• A group of computers that workin together for a common purpose

Which of the following best describes the protocols used on the Internet?

• The protocols of the Internet are designed by government agencies to ensure they remain free to use

• The protocols of the Internet are secret to maintain the privacy and security of people using them

• Each device connected to the Internet will use a protocol designed by the company that manufactured it

• The protocols of the Internet are open and used by all devices connected to the network

Jesse purchases a new smartphone and is immediately able to use it to send a photo over the Internet to a friend who lives in a different country. Which of the following is NOT necessary to make this possible?

• Both devices are using the same shared and open protocols

• A single direct connection is established between any two devices connected to the Internet

• The data of the image is routed through a sequence of directly connected devices before arriving at its destination.

•   Both devices are directly connected to at least one part of the Internet

This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection. What is the MINIMUM number of paths that would need to be broken to prevent Computing Device A from connecting with Computing Device E?

• 1

• 2

• 3

• 4

This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection. Device A is attempting to send data over the Internet to Device E. Which of the following is true of how the data will travel through the network?

• The data will always travel through Device B as it is the shortest path

• The data will never be sent to Device G since there are other shorter paths available

• It is possible that the data travels through any of the devices in the network before arriving at device E

• If the data travels through Device D then it will not travel through Device B

Emilee is watching an online video. The video is being sent to her laptop by a server over the Internet which splits the video into packets and sends them in the order they appear in the video. Which of the following is true about how the packets will arrive at her computer?

• The packets will always be received in the order that they were sent

• Either every packet will reach her computer or none of them will.

• Packets that arrive out of order will be sent back to the server.

• The packets may arrive out of order

Which of the following best describes the purpose of an IP address?

• IP addresses provide a unique number for identifying devices that send and receive information on the Internet

• IP addresses assist in the reconstruction of a message that has been divided into many packets

• IP addresses indicate the location where an internet-connected computing device was manufactured

• IP addresses indicate how many times an individual packet has been requested by a router