CSP CH 2 QUIZ Questions with Correct Answers

CSP CH 2 QUIZ Questions with Correct Answers In the Internet Simulator, your router knows to send your message to a different router because: - Answer-The first 4 bits of the address specify the router number that your friend is on. Router - Answer-A type of computer that forwards data across a network Network Redundancy - Answer-having multiple backups to ensure reliability during cases of high usage or failure If the post office delivered mail exactly like routers deliver messages on the internet, which 2 of the following statements would be true? - Answer-The mailman would sometimes take a different path to deliver each letter to your home. Letters would be written on the outside of envelopes for all to read instead of letters put inside envelopes. Which two of the following statements are true about routing on the Internet. - Answer-A packet travelling between two computers on the Internet may be rerouted many times along the way. A packet contains addressing information to allow routers to decide how best to forward along that packet towards its destination. Relative benefits of routing over a broadcast style of communication - Answer-Routing messages to a specific address rather than broadcasting the message reduces the number of people who automatically see it, and addressed traffic is more secure than broadcasted Can you know in advance the path a message will take between you and another computer on the Internet? - Answer-No, because the most efficient route will change depending on traffic and what other routers are online. packets - Answer-Small chunks of information that have been carefully formed from larger chunks of information. TCP (Transmission Control Protocol) - Answer--provides reliable, ordered, and error- checked delivery of a stream of packets on the internet. -tightly linked with IP and usually seen as TCP/IP in writing. Pick the two statements about packets and routing on the Internet which are true. - Answer-TCP ensures messages can be reliably transmitted across the Internet TCP must account for the fact that packets may not arrive at a destination computer in the intended order Which of the following is NOT true about packets? - Answer-A message sent across the Internet can always be contained in a single packet IP (Internet Protocol) - Answer-The required structure of a packet to be sent on the internet IPv4 Packet - Answer-A packet of data that uses 32 bit addresses protocol - Answer-a well-known set of rules and standards used to communicate DNS - Answer-The service that translates URLs to IP addresses. Which of the following is NOT solved by DNS? - Answer-There are too few IP addresses to meet the current demand. Why do computers need to periodically check the DNS for websites you have already visited? - Answer-The IP address associated with a given URL is not static, and it can change Why don't we need to know the IP addresses for our favorite sites? - Answer-When we type in a web page address and click enter the browser contacts the DNS server to look up the IP address. What feature of DNS and IP allow the internet to scale? - Answer-hierarchy HTTP (Hypertext Transfer Protocol) - Answer-the protocol used for transmitting web pages over the Internet