2013Dec.pdf - THE UNIVERSITY OF HONG KONG FACULTY OF ENGINEERING DEPARTMENT OF COMPUTER SCIENCE COMP3322\/CSIS0322 Modern Technologies on World Wide Web

2013Dec.pdf - THE UNIVERSITY OF HONG KONG FACULTY OF...

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THE UNIVERSITY OF HONG KONG FACULTY OF ENGINEERING DEPARTMENT OF COMPUTER SCIENCE COMP3322/CSIS0322 Modern Technologies on World Wide Web Date: December 12, 2013 Time: 2:30pm-5:30pm University Number: Only approved calculators as announced by the Examinations Secretary can be used in this examination. It is the candidates' responsibility to ensure that their calculator operates satisfactorily, and candidates must record the name and type of the calculator used on the front page of the examination script. Candidates are allowed to bring into the examination hall one piece of A4 paper with printed or written notes on both sides. Answer ALL questions in the space provided. Write your university number at the top of each page. Total mark is 100. Question Score 1 (22%) 2 (13%) 3 (17%) 4 (18%) 5 (30%) Total (1 00%) Page 1 of 18
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UID _______ _ Question 1 (22%}: Briefly explain and compare the technologies in each sub-question. (1) (4%} IPV4, IPV6 (2) (4%) HTML, (3) (4%) XML HTIP GET, HTIP POST Page 2 of 18
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UID ______________ _ (4) {4%) SOAP, WSDL (5) (6%) laaS, PaaS, SaaS Question 2 (13%): Suppose a client in Australia clicks a link within her web browser obtain a web page using HTTP, and the web page is hosted on web server . The lP address of the web server is not cached in the client host, so a triggered to obtain the lP address. In the figure below, the two hosts/servers connected by a dotted line can possibly contact each other during the DNS lockup. Answer the following questions about DNS. to DNS lockup is Page 3 of 18
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UID _______ _ client web server (1) (3%) Is DNS a client-server application or a peer-to-peer application? Explain your answer. (2) (2%) Suppose the web server is located within a subnet 147.8.176.0/11. Provide a valid 1Pv4 address for the web server. of Page 4 of 18
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UID ______________ _ (3) (8%) Suppose only the authoritative DNS server knows the lP address of the Describe how the client finds out the lP address of the web server if recursive used, and how the client finds out the lP address of the web server if non-recursive query is used. Question 3 (17%): You are given the following HTMLS document, which displays a video a video-playback progress bar. A screenshot of the browser display is given, where the of the played area in the progress bar (i.e., the dark area) increases when the video playing and stops increasing when the video pauses. web server. DNS query is DNS and width is I~ <!DOCTYPE html> <html> Page 5 of 18
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  • Fall '13
  • Dr. C. Wu
  • Computer Science, Web page, World Wide Web, Domain Name System, Steven Wong

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