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      • 第八章筆記 10-23 Curtislow 2023-02-06 18:56:02
      • 第八章筆記 10-23 IvyGuide 2023-02-06 18:44:53
      • 第八章筆記 10-23 JosephHaund 2023-02-06 16:10:21
      • 第八章筆記 10-23 CharlesAnive 2023-02-06 15:30:13
      • 第八章筆記 10-23 Richardwrolo 2023-02-06 13:26:05
      • 第八章筆記 10-23 TeoGuide 2023-02-06 13:17:40
      • 第八章筆記 10-23 SamuelNok 2023-02-06 12:49:07
      • 第八章筆記 10-23 SueGuide 2023-02-06 11:54:28
      • 第八章筆記 10-23 EvaGuide 2023-02-06 11:38:01
      • 第八章筆記 10-23 ZakGuide 2023-02-06 10:35:10
      • 最高人氣
      • 計網第七章筆記 (48427)
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      • " target="_blank">AA
        • 第八章筆記 10-23
          • LAN (Local Area Net) and NetWork

            ◆什麼是區網?
            就是指涵蓋 OSI的 layer1(Physical Layer) 和 layer2(Data LinK Layer) 範圍。
            (不能用距離來分、比如SoftEther可以是全球性的)
            ehternet(乙太網路)、token ring、token bus 等等的網路技術,統統是在講 layer1 和 layer2。

            ◆區域網路的重點︰
            1.Share Medium
            2.topology

            ◆CSMA/CD AND CSMA/CA
            Ethernet的MAC

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-24 22:39
        • 計網第七章筆記
        • Pack(封包) and Frame(結構) and Error Detection (錯誤偵查)

          ◆電話與網路的差別︰
          電話網路 circuit switching
          電腦網路 Packet switching

          ◆Pack(封包)︰分封之意
          layer1 封包的單位是 bit
          layer2 封包的單位是 Frame
          layer3 封包的單位是 Datagram
          layer4 封包的單位是 segmemt
          layer5 以上封包的單位是 Message

          ◆網路的基本概念就是Pack switching
          其對

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-16 23:06
        • Wisdom
        • Who is wise and understanding among you? Let him show it by his good life, by deeds done in the humility that comes from wisdom. But if you harbor bitter envy and selfish ambition in your hearts, do not boast about it or deny the truth. Such 'wisdom' does not come down from heaven but is earthly, unspiritual, of the devil. For where you have envy and selfish ambition, there you find disorder and e

        • 詳全文
        • 分類: Motto
        • 2008-10-13 08:31
        • 計網第三章筆記
          • 目前的網路大多是 client server 主從式架構、
            Server本身會先啟動Application (如︰Web Service、FTP、Telnet等)
            並會開啟其相對應的Port、
            然後listen 該 port 上 等 client 提 request
            也就是 which computer? which application to access? which service?

            其中、Server會有其 IP、還會有 domain name 去對應其IP Address
            所以Client在尋找Server

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-11 20:13
        • 計網第五章筆記
        • ◆傳遞訊號時、為什麼短距離和長距離不一樣?
          Local 訊號衰減、但也不至於衰減到難以辨認。
          遠端的話、就會因為傳遞的物質有阻抗而衰減到無法辨認。
          (即使光纖也會有、需用repeater)

          ◆電腦傳送的資料上都是Bit為單位、
          但是實體上常用︰電流(wire)、電磁波(wireless)、光(wire & wireless)

          ◆傳輸介質的進步

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-11 20:11
        • 計網第六章筆記
        • ◆調變和解調
          訊號是encode在carrier(載波)裡面的、利用調變和解調達成
          目的︰1.訊號傳更遠、2.多工方式增加Data傳輸量

          ◆需要一個Modem來達成(Modem = Modulation + Demodulation)

          ◆將訊號放入"連續性震盪訊號"中 (連續性震盪訊號稱為載波)
          可用以下三種方法做調變、把Data載入載波上面
          1.振幅 (EX: 1/2A是零 1/4A是

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-11 20:08
        • Feeds
        • 'Do not store up for yourselves treasures on earth, where moth and rust destroy, and where thieves break in and steal. But store up for yourselves treasures in heaven, where moth and rust do not destroy, and where thieves do not break in and steal. For where your treasure is, there your heart will be also. 'The eye is the lamp of the body. If your eyes are good, your whole body will be full of lig

        • 詳全文
        • 分類: Motto
        • 2008-10-11 12:39
        • In perfect unity
        • Therefore, as God's chosen people, holy and dearly loved, clothe yourselves with compassion, kindness, humility, gentleness and patience. Bear with each other and forgiver whatever grievances you may have against one another. Forgive as load forgave you. And over all these virtues put on love, which binds them all together in perfect unity.





        • 詳全文
        • 分類: Motto
        • 2008-10-08 19:25
        • 我最喜歡吃的點心
        • 

          ◎ 我最喜歡吃的點心 曾加恩

          我最喜歡吃的點心就是起司熱狗了,它的味道美極了!這種熱狗裡面有著濃濃的起司,味道很鮮美,所以我喜歡吃熱狗。每當我和爸爸到便利商店的時候,內心總是盼望著爸爸能買熱狗給我,但是爸爸卻為了省錢而不買給我,讓我只能流著口水,默默的望著起司熱狗

        • 詳全文
        • 分類: 小寫
        • 2008-10-06 08:15
        • 你不要趕我走
        • 

          作者 李家同 2008.09.28

          我雖然已離開了清華大學,但我仍有一個「合聘教授」的頭銜,所以在清大,仍有一間研究室。這間研究室的窗子對著一個非常迷人的廣場,廣場中種了很多丰姿綽約的欖仁樹。我離開清大的時候,這些欖仁樹和我差不多高,現在這些欖仁樹都有六層樓高了。每年,當我發現欖仁樹

        • 詳全文
        • 分類: Motto
        • 2008-10-06 08:05
        • The Widow's Offering
        • 

          JS. sat down opposite the place where the offerings were put and watched the crowd putting their money into the temple treasury. Many rich people threw in large amounts. But a poor widow came and put in two very small copper coins, worth only a fraction of a penny.

          Calling his disciples to him, Jesus said, "I tell you the truth, this poor widow has put

        • 詳全文
        • 分類: Motto
        • 2008-10-05 20:13
        • 美麗新視界
        • 美國華盛頓大學正在研發的高科技隱形鏡片, 不但可以幫你瀏覽網際網路, 還可以幫你服藥. 競片中的聚合物(polymers)可以收納藥物, 依照病人的指令釋放. 其他可能的用途包括: 汽車或飛機駕駛人可以看到速度"投射"在視野內; 電玩玩家可以恍如"置身"虛擬實境中, 上市時間五年後. (讀者文摘)

          &

        • 詳全文
        • 分類: 新知
        • 2008-10-05 19:40
        • 10/2上課筆記 - VOIP, Transmission Media (CH4)
        • VOIP

          PC <--> PC (Cyber)

          PC <--> PSTN (電話)

          PSTN <-->VOIP <--> PSTN (從local上車, 走VOIP, 下車走Local); 找最近的點下車走local

          Ch4 Transmission Media
          可分 有線和無線

          網路七層中的最底層 實體層
          傳輸介質、編碼。

          傳輸介質一直在改進 (如光通訊、有抗雜訊、速度快等優點)、所以技術、品質越來越好
          編碼(Da

        • 詳全文
        • 分類: 計算機網路
        • 2008-10-02 22:57
        • 峰後的平原
        • 

          峰後的平原 ◎ 曾智義

          峰後沒有一個完美非我莫屬的平原
          可以盡情與自由奔跑的平原
          眾者傳述著平原漸漸幻滅
          已難以登入平原如同登峰
          維少者具有神蹟般的武術
          少者無比艱辛的入原
          既已入原又夢到被逐出原
          無數次聽見老者的告誡
          平原已失 平原已失 平原已失
          &
        • 詳全文
        • 分類: 小寫
        • 2008-10-01 20:59
        • Full riches
        • 

          My goal is that they may be encouraged in heart and united in love, so that they may have the full riches of complete understanding.



        • 詳全文
        • 分類: Motto
        • 2008-10-01 19:48
        • Put on love
        • 

          And over all these virtues put on love, which binds them all together in perfect unity.



        • 詳全文
        • 分類: Motto
        • 2008-10-01 19:31
        • In humility
        • In humility, consider others better than yourselves. Each of you should look not only to your only to your own interests, but also to the interests of others.



        • 詳全文
        • 分類: Motto
        • 2008-09-29 21:14
        • The Helping at the Needs
        • One who was there had been an invalid for thirty-eight years. When J saw him lying there and learned that he had been in this condition for a long time, he asked him, “Do you want to get well?”
          “Sir,” the invalid replied, “I have no one to help
        • 詳全文
        • 分類: Motto
        • 2008-09-28 20:19
        • My Mottos
        • 1. Only let us live up to what we have already attained.

          2. I can do everything through him who gives me strength.

          3. Forgetting what is behind and straining toward what is ahead.

          ---------------------------------------------------------------------------------------------------------

          Ph.D, Student Chih-Yi Tseng
          Department of Information Management, National Sun Yat-sen University,
          Taiwan



        • 詳全文
        • 分類: Motto 標籤: Mottos
        • 2008-09-27 18:47
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