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Chapter 2 MC



This activity contains 10 questions.

Question 1.
The transfer of an html file from one host to another is

 
End of Question 1


Question 2.
A browser will generate header lines as a function of

 
End of Question 2


Question 3.
Suppose a client sends an HTTP request message with the If-modified-since: header. Suppose the object in a server has not changed since the last time a client retrieved the object. Then the server will send a response message with the status code:

 
End of Question 3


Question 4.
Suppose the hit rate is .5 (instead of .4) in the caching example in the text. Then the average delay is

 
End of Question 4


Question 5.
SMTP is used to

 
End of Question 5


Question 6.
Suppose a DNS resource record has Type=MX. Then

 
End of Question 6


Question 7.
Local DNS name servers

 
End of Question 7


Question 8.
Streams are not needed in which of the following programs:

 
End of Question 8


Question 9.

Consider the minimum time for P2P file distribution, as discussed in Section 2.6. Suppose the upload rate of the server is10 Mbps, the upload rates of all peers is 1 Mbps, and the download rates of all peers is 10 Mbps. Further suppose that there are 100 peers and the file is 100 million bits. The minimum distribution time is
 
End of Question 9


Question 10.
For BitTorrent, which of the following is true:

 
End of Question 10





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