CS Review PT 1

CS Review Pt 1

Multiple Select

Pick the two statements that are true about the Internet Protocol (IP):

• IP is a secret protocol shared between the sender and receiver.

• Each network on the Internet uses its own protocol to address messages.

• Each device or computer on the Internet is assigned a unique IP address.

• IP is the shared way that all devices and computers label their messages with the sender and receiver's addresses.

• In order to communicate two devices on the Internet must have the same IP address.

Multiple Select

Pick Two: If the post office delivered mail exactly like the routers deliver messages on the Internet, which of the following statements would be true?

• The mailman would sometimes take a different path to deliver each letter to your home.

• Letters would be written on the outside of the envelope for all to read instead of letters put inside envelopes.

• Your mail could not be delivered if a road your mailman was planning to take were under construction.

• One mailman would be responsible for delivering a letter from sender to receiver.

Multiple Choice

In the Internet Simulator, your router knows to send your message to a different router because:

• The first 4 bits of the address specify the router number that your friend is on.

• Messages are routed over different paths.

• You set the "other router" bit in the message.

• Everyone is on the same router.

Multiple Choice

Which of the following is true regarding the way information is transmitted on the Internet?

• Information does not travel in one piece, but rather as a datastream of packets.

• If a single packet is dropped, the entire file must be resent.

• Because of the reliability of the Internet, packets always arrive in the same order they were sent.

• Information flows on a dedicated direct connection from the sender's device to the receiver's device using binary electrical signals.

Multiple Select

Which two of the following statements are true about routing on the Internet?

• A packet contains addressing information to allow routers to decide how best to forward along that packet towards its destination.

• A packet travelling between two computers on the Internet may be rerouted many times along the way.

• There is one router which receives and redirects all the traffic of the Internet.

• Your router receives all the traffic of the Internet and delivers to your computer only the messages intended for you.

• Information travelling between two computers over the Internet will always take the same path.

Multiple Choice

Indicate whether the following statement is true or false.

A router is a type of computer that forwards data across a network.

Correct!

• True

• False

Multiple Choice

Indicate whether the following statement is true or false.

IP Address is a shared number assigned to several devices on the Internet.

• True

• False

Multiple Choice

Select the correct word or expression to complete the sentence.

A system is ______________________ when it can continue to function even in the event of individual component failures.

• abstract

• digital

• fault tolerant

• neutral

Multiple Choice

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?

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

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

• Both devices are using the same shared and open protocols.

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

Multiple Choice

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

Multiple Choice

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?

• 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.

  Correct Answer

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

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