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COMP101 – Exploring Multimedia and Internet Computing

COMP101 – Exploring Multimedia and Internet Computing. LA2 (Thu 14:00 – 16:50) TA: Jackie Lo. Lecture Review. Email Header (e.g. sender information, Date, etc.) are supplied by the system (but could be faked). Privacy on e-mails

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COMP101 – Exploring Multimedia and Internet Computing

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  1. COMP101 –Exploring Multimedia and Internet Computing LA2 (Thu 14:00 – 16:50) TA: Jackie Lo

  2. Lecture Review • Email • Header (e.g. sender information, Date, etc.) are supplied by the system (but could be faked). • Privacy on e-mails • “hops” (servers and routers) between mail sender and recipient can read and store the IP packet send through them • there is no trace for tampering

  3. Lecture Review • Email Privacy

  4. Lecture Review • Using PKI at HKUST • E-cert, we got last lab • Exchange the public keys • Safeguard your private key • Email abuse • Questions? • My FYP is about tailor-made spam email filter. If you are interested, you can come and find the details in my office. 

  5. Lecture Review • World Wide Web (WWW) • Browser • Tool for browsing the web, e.g. IE, Netscape • Uniform Resource Locator (URL) • Address of webpage • Hyper Text Markup Language (HTML) • Common Language (Code) presenting webpage • Hyper Text Transfer Protocol (HTTP) • Protocol for transfer webpage

  6. Lecture Review • Cookies • small files placed by Web server in a directory of the user’s computer • to track users’ browsing habits. • Security using the web • Use secure connection (https) before entering personal data. (A golden lock at the bottom of the browser)

  7. Reminders • Test 1 will be on 28 Feb. (Wed) • In class: • 10 – 11 am • LTA • In the evening: • 7 – 8 pm • Room 2306 (via Lift 17-18) • Please revise ALL the course materials. • Lecture Slides • Lab Notes and Assignment • Lecture Notes (Please at least read once!)

  8. Lab 3 • Follow the steps in lab 3 • Notes for using excel function • =VLOOKUP(Lookup_value, Table_array, Col_index_num) • =IF(condition, return_if_true, return_if_false) • =COUNT(range) • =COUNTIF(range,criteria)

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