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Unformatted text preview: 14-740: Fundamentals of Computer and Telecommunication NetworksFall 2010Quiz #1: Version BDuration: 50 minutesName: ANSWER KEYAndrew ID: Important:•Each question is to be answered in the space provided. Material written on the back of the page or in space above or below the question will not be graded.•This is a closed book exam -- you may not use any reference materials, crib sheets, or formula cards.•Write legibly. Unreadable work will be considered incorrect.•At the end of the ¡nal duration, you will be told to “Cease Work.” Immediately stop writing and turn in your paper. Any writing after this point will result in a zero grade.Page 2 ___________ (21 possible)Page 3___________ (16 possible)Page 4___________ (15 possible)Page 5___________ (10 possible)Page 6___________ (28 possible)Page 7___________ (10 possible)Total___________ (100 possible)I understand that the CMU and course policies on cheating apply to this quiz.signaturedate1.True or False (circle one): There is an amazing variety in the types of devices that are end-hosts on the internet, including networked sensors to monitor buildings and biomedical devices, in addition to laptop, desktop and server devices. (3 points)TRUE2.What sort of information is transferred using the SMTP protocol? (5 points)Email3.The File Transfer Protocol (FTP) is very similar to HTTP. Both are application-level protocols, running on top of TCP, to transfer ¡les from client to server. In what way is FTP drastically different from HTTP? (Hint: The difference is so drastic there is actually a picture in the textbook illustrating FTPʼs communication) (5 points)FTP uses two TCP connections, one for data and the other for control4.How can you tell if a given computing device is part of the network core or part of the network edge? (5 points)Network edge devices are the source or sink of application data. Application-level protocols run between them.Network core devices are responsible for moving data from edge device to edge device....
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- Spring '09
- Web server, HTTP, name server, BitTorrent, BitTorrent tracker, transmission time