[dse 2018] ict討論區

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14 Like 5 Dislike
2018-04-06 07:40:14
2^10
2018-04-06 07:40:46
其實D真係最有用
2018-04-06 08:38:30
Key word: 10 bit user identity code
2¹⁰ = 1024

後面嗰個fake
2018-04-06 09:14:48
如果大學讀CS 學D邏輯思維真係幫到好多
同埋得D唔係吹水野
2018-04-06 09:39:46
core仲有冇郵件合併
2018-04-06 09:45:22
應該有
Mc居多,lq 喺dse好似未出過,hkace mock 出過一次問procedure
2018-04-06 09:51:45
有冇人可以答我normal form 係做乜?
成日分唔到 2NF 同3NF
2018-04-06 10:46:59
同問
2018-04-06 10:54:19
係咪elective 嘢嚟,冇讀過嘅
2018-04-06 10:55:57
應該係elective A野?
2018-04-06 10:57:41
郵件合併
2018-04-06 10:58:10
屌奶星,差啲嚇死
2018-04-06 11:04:48
連接lan到互聯網
2018-04-06 11:05:12
Router : Divide a network to some small networks
Modem : Convert analog signal to digital signal
2018-04-06 11:17:51
有冇人可以講下假設呀之類個d
2018-04-06 11:21:42
Router:
1, Connect a network to the Internet
2, Connect two networks of different types (e.g. connect LAN and WAN)

Modem:
1, Convert digital signal to analogue signal
2, Convert analogue signal to digital signal

Modem比較舊,以前電話線上網就一定要用Modem(電話線係analogue signal)
2018-04-06 11:22:37
What if analysis?
2018-04-06 11:26:53
你電腦嘢係digital,但係cable 係只可以transfer analogue
2018-04-06 11:29:45
utp cable=cat-5 通常係普通寬頻會用 100Mb/s 1000Mb/s個D
光纖速度會快過cat-5好多,原理係物理野呢科唔會考
2018-04-06 11:31:44
2NF 係一個table有多過一個primary key 然後有d field淨係depends on其中一個
3NF 係有d field淨係depends on non-key attribute, 而唔係多過一個primary key然後淨係depends一個
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