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struct="atomic" id="26"></list></costumes><sounds><list struct="atomic" id="27"></list></sounds><blocks></blocks><variables></variables><scripts><script x="10" y="10"><block s="receiveGo"></block><block s="doSayFor"><l>Welcome to our quiz on DNS (Domain Name System)</l><l>4</l></block><block s="doSayFor"><l>After each question is shown to you, please type the answer choice 1, 2, 3, or 4 corresponding to the answer choice you choose.</l><l>5</l></block><custom-block s="Answer 1 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>What information do second level domains provide for you?</l><l>Mostly know to identify the company or organization that registers it</l><l>The type of website it is using endinggs such as ".com"</l><l>The IP address of your website</l><l>Identifies the website you want to go to</l></custom-block><custom-block s="Answer 3 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>What component keeps track of domain name to IP mappings as well as kicks out websites you have not visited in a while?</l><l>ISP</l><l>IP Address</l><l>Cache</l><l>Domain</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 2 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Which of the following is not an example of cyber criminals trying to breach your DNS?</l><l>Tries to redirect you to their server</l><l>Loading up a website and getting an unexpected result</l><l>Computer cannot find a recent website</l><l>Laggggggggg</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 2 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Imagine an internet without the domain name system (DNS). What would that internet be like?</l><l>Without the domain name system, we would not be able to connect to other computers on the internet.</l><l>&#xD;Without the domain name system, we would not be able to use nice URLs like "facebook.com" to visit websites on the internet.</l><l>Without a domain name system, we would have to worry about attacks from cyber criminals.</l><l>Without the domain name system, we wouldn&apos;t be able to have that many websites on the internet.</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 4 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Imagine you&apos;re trying to explain the domain name system (DNS) to a 5 year old.&#xD;Which of these metaphors are the most fitting?</l><l>The domain name system is like a keychain for the internet.</l><l>The domain name system is like a recipe book for the internet.</l><l>The domain name system is like a roadmap for the internet.</l><l>The domain name system is like a phone book for the internet.</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 2 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>What is a primary aspect of the domain name system (DNS) that helps it scale?</l><l>Scalability in the DNS is helped by ethernet connections between the name servers</l><l>Scalability in the DNS is helped by the division of labor between root name servers, TLD name servers, and host name servers</l><l>Scalability in the DNS is helped by crowd-sourcing the mapping of domain names to users</l><l>Scalability in the DNS is helped by peer-to-peer connections between all users of the internet, reducing the stress put on the DNS</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 1 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Consider the website:&#xD;eecs.berkeley.edu That website leads to the Electrical Engineering &amp; Computer Science department of UC Berkeley. Which of these statements is true?</l><l>edu is a top-level domain</l><l>berkeley is a top-level domain</l><l>edu is a third level domain</l><l>eecs is a top-level domain of berkeley.edu</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 1 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Bailey decides to make their own version of the internet. To map domains to IP addresses, he sets up a single computer that stores every mapping. What is a flaw in this system that affect its scalability?</l><l>Once many computers join their internet, the computer may be overwhelmed by requests and not be able to handle all of them in a reasonable amount of time.</l><l>If a cybercriminal hacks into the computer, they can change the mappings to point at their own domains.</l><l>Once many computers join their internet, the computer may be overwhelmed by requests and not be able to handle all of them in a reasonable amount of time.</l><l>None of the above affect the system&apos;s scalability</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 3 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>Which of these is the best description of the domain name system (DNS)?</l><l>The domain name system describes how computers can translate domain names into a binary representation.</l><l>The domain name system describes how criminals can hack into the computer servers for a domain.</l><l>The domain name system associates domain names with IP addresses, like "www.youtube.com" with 208.65.153.251.</l><l>The domain name system describes how computers can send messages from one domain to another domain, like "youtube.com" to "google.com".</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><custom-block s="Answer 4 is Correct, Question: %s Choice 1 %s Choice 2 %s Choice 3 %s Choice 4 %s"><l>The domain name system is widely touted as a highly scalable distributed system.&#xD;What does it mean for a system to be scalable?</l><l>A scalable system is built on open protocols.</l><l> scalable system is not subject to attacks from cybercriminals.</l><l>A scalable system is hierarchical in its architecture.</l><l>A scalable system can handle an increasing number of users.</l></custom-block><block s="doWaitUntil"><block s="reportEquals"><block var="i"/><l>1</l></block></block><block s="doWait"><l>.5</l></block><block s="bubble"><l>Your Score:</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="score"/></block></script><list></list></block><list></list></block><block s="doSetVar"><l>score</l><l>0</l></block></script></scripts></sprite><watcher var="answerChoices1" style="normal" x="26.617515354098032" y="26.61751535409021" color="243,118,29" hidden="true"/><watcher var="answerChoices2" style="normal" x="31.473182678229023" y="31.473182678222912" color="243,118,29" hidden="true"/><watcher var="i" style="normal" x="31.473182678229023" y="97.56687259712595" color="243,118,29" hidden="true"/><watcher var="score" style="normal" x="31.473182678229023" y="163.66056251603095" color="243,118,29" hidden="true"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="Question 1" type="command" category="motion"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices1"/></block></script><list></list></block><list></list></block><block s="doAsk"><l>Question lol</l></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block></script></block-definition><block-definition s="Question 2" type="command" category="motion"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices2"/></block></script><list></list></block><list></list></block><block s="doAsk"><l>Question lol</l></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block></script></block-definition><block-definition s="Answer 3 is Correct, Question: %&apos;Question&apos; Choice 1 %&apos;Answer 1&apos; Choice 2 %&apos;Answer 2&apos; Choice 3 %&apos;Answer 3&apos; Choice 4 %&apos;Answer 4&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doSetVar"><l>i</l><l>0</l></block><block s="doSetVar"><l>answerChoices1</l><block s="reportNewList"><list><block var="Answer 1"/><block var="Answer 2"/><block var="Answer 3"/><block var="Answer 4"/></list></block></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices1"/></block></script><list></list></block><list></list></block><block s="doAsk"><block var="Question"/></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re Right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block><block s="doSetVar"><l>score</l><block s="reportSum"><block var="score"/><l>1</l></block></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doSetVar"><l>i</l><block s="reportSum"><block var="i"/><l>1</l></block></block></script></block-definition><block-definition s="Answer 2 is Correct, Question: %&apos;Question&apos; Choice 1 %&apos;Answer 1&apos; Choice 2 %&apos;Answer 2&apos; Choice 3 %&apos;Answer 3&apos; Choice 4 %&apos;Answer 4&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doSetVar"><l>i</l><l>0</l></block><block s="doSetVar"><l>answerChoices1</l><block s="reportNewList"><list><block var="Answer 1"/><block var="Answer 2"/><block var="Answer 3"/><block var="Answer 4"/></list></block></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices1"/></block></script><list></list></block><list></list></block><block s="doAsk"><block var="Question"/></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re Right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block><block s="doSetVar"><l>score</l><block s="reportSum"><block var="score"/><l>1</l></block></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doSetVar"><l>i</l><block s="reportSum"><block var="i"/><l>1</l></block></block></script></block-definition><block-definition s="Answer 4 is Correct, Question: %&apos;Question&apos; Choice 1 %&apos;Answer 1&apos; Choice 2 %&apos;Answer 2&apos; Choice 3 %&apos;Answer 3&apos; Choice 4 %&apos;Answer 4&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doSetVar"><l>i</l><l>0</l></block><block s="doSetVar"><l>answerChoices1</l><block s="reportNewList"><list><block var="Answer 1"/><block var="Answer 2"/><block var="Answer 3"/><block var="Answer 4"/></list></block></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices1"/></block></script><list></list></block><list></list></block><block s="doAsk"><block var="Question"/></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re Right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block><block s="doSetVar"><l>score</l><block s="reportSum"><block var="score"/><l>1</l></block></block></script></block><block s="doSetVar"><l>i</l><block s="reportSum"><block var="i"/><l>1</l></block></block></script></block-definition><block-definition s="Answer 1 is Correct, Question: %&apos;Question&apos; Choice 1 %&apos;Answer 1&apos; Choice 2 %&apos;Answer 2&apos; Choice 3 %&apos;Answer 3&apos; Choice 4 %&apos;Answer 4&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input><input type="%s"></input></inputs><script><block s="doSetVar"><l>i</l><l>0</l></block><block s="doSetVar"><l>answerChoices1</l><block s="reportNewList"><list><block var="Answer 1"/><block var="Answer 2"/><block var="Answer 3"/><block var="Answer 4"/></list></block></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><block var="answerChoices1"/></block></script><list></list></block><list></list></block><block s="doAsk"><block var="Question"/></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>1</l></block><script><block s="doSayFor"><l>You&apos;re Right!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block><block s="doSetVar"><l>score</l><block s="reportSum"><block var="score"/><l>1</l></block></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>2</l></block><script><block s="doSayFor"><l>You&apos;re Wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>3</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doIf"><block s="reportEquals"><block s="getLastAnswer"></block><l>4</l></block><script><block s="doSayFor"><l>You&apos;re wrong!</l><l>2</l></block><block s="doTellTo"><l>Sprite(2)</l><block s="reifyScript"><script><block s="bubble"><l></l></block></script><list></list></block><list></list></block></script></block><block s="doSetVar"><l>i</l><block s="reportSum"><block var="i"/><l>1</l></block></block></script></block-definition></blocks><variables><variable name="answerChoices1"><list struct="atomic" id="932">A scalable system is built on open protocols., scalable system is not subject to attacks from cybercriminals.,A scalable system is hierarchical in its architecture.,A scalable system can handle an increasing number of users.</list></variable><variable name="answerChoices2"><l>0</l></variable><variable name="i"><l>1</l></variable><variable name="score"><l>0</l></variable></variables></project><media name="DNS Quiz" app="Snap! 5.1, http://snap.berkeley.edu" version="1"></media></snapdata>