Lab Packet Sniffer

1. Install Protocol Analyzer Ethereal at http://www.wireshark.org/
2. Capture the packets at your Ethernet interface card.
3. Enter a login required website that you often go to, such as web mail. Don't use the real account or password.
4. Try to catch the packet that contains the password.


網站未加密

Lab SSL

1. Try Yam membership enrollment
for using SSL encrypted Internet communications.
2. Note the lock at the lower right corner is secured when SSL is enabled.
3. Click the lock icon and a message window should pop up.
4. What kind of encryption is used in this SSL? How many bits are there in the encryption key?

A:AES-256,256bits

5. Who issued the certificate you are seeing? (Who is the certificate authority, CA, for this website?)

A:UTN-USERFirst-Hardware

6. Until when is the certificate valid?

A: 2007/7/16~2010/7/16

7. What kind(s) of hash is/are used in the CA's digital signature?

A:SHA1,MD5

8. How many bits are there in the hash(es)?

A:SHA1 20Bytes MD5 16Bytes

Lab Hash

1. Install SlavaSoft HashCalc2. Open the file readme.txt of this software3. Calculate the cash.4. Open another copy of HashCalc5. Open the file readme.txt and delete the first space fo the file.6. Calculate the hash of the modified file.7. Compare the hashes of two files.

Lab XHTML Validation

1. Use the W3C Markup Validation Service to check the XHTML sample.2. You may want to select the direct input option.3. How many errors and warnings are there?4. Fix the problem and recheck it until it is strictly XHTML 1.0 compliant.ref: Introduction to XHTML

Lab Checking dead links

W3C Link Check 可以檢查 dead links, 而且只要輸入首頁,就可以依據指定深度自動向下檢查, 而且也可以檢查對外連結(外站).Link Checker 首先要設定檢查深度(Check linked documents recursively, recursion depth=?), 如果沒有設定, 它就只有檢查首頁.因此如果出現 deadlink, 就是在首頁.如果你設定檢查深度, 它就會逐一檢查此深度內的每一頁,在檢查某一頁開始時, 它會先顯示現正在檢查的 URL, 然後在逐一爬行該頁內每個 link.報表輸出很漂亮. 請參閱http://validator.w3.org/checklink請檢查三個你最常使用的網站, 看看連結的品質如何?紀錄有錯誤連結 (HTTP Error 404) 的次數.



yahoo : 2個

中原 : 1個

yam天空 : 1個

Lab Content Analysis

According to the scheme above, the content of comments was characterized by the three independent dimensions. The intention of the analysis was to reveal any emergent correlations among three attributes of comments collected in the dataset.

The affective dimension was generally quite straightforward and lent itself to comparatively easy classification. To probe the range between agreement and disagreement requires more careful judgment and usually involves more reading between the lines. The boundary between reflection and non-reflection was somewhat blurred for some occurrences of comments. Some comments showed no reflection as all; some comments demonstrated sufficient reflection while others appeared to possess marginal reflection.

Perform content analysis on the dataset of comments on the essay blogs.



Total:118

C : 16 (13.559%) R : 94 (79.661%) U : 8 (6.780%)

A : 67 (56.780%) D : 14 (11.864%) M : 37 (31.356%)

E : 37 (31.356%) P : 79 (66.949%) N : 2 (1.695%)

Lab: Drag-and-Drop by AJAX

1. Go to Laszlo and enter (Laszlo in 10 minutes).
2. Study and play around the "drag-and-drop" example.
3. Use this method to control movie playing as in the previous lab.
4. If you drag and drop the photo to the "play" area, the movie plays.
5. If you drap and drop the photo to the "pause" area, the movie pauses.