課程影片與練習
課程簡介
第1週：網路架構與七層參考模式簡介
※觀看影片請點擊影片名稱後方的"YOUTUBE"或"YOUKU"，
觀看YOUKU影片，請輸入密碼：mooc01004
第2週：IEEE 802.3 乙太網路 (Ethernet)
第3週：IEEE 802.11 無線區域網路 (Wireless LAN)
第4週：IEEE 802.1D 交換機的擴張樹演算法 (Spanning Tree Algorithm)
第5週：IEEE 802.1Q 虛擬區域網路 (Virtual LAN)
第6週：區域網路可靠傳輸技術 －－ 滑動視窗技術
第7週：路由器運作原理以及網路互連技術
第8週：TCP 與網路阻塞偵測與控制技術
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1.3.Which of the following statements are correct for “links” of a network?
下列哪些對於網路”鏈路”的定義是正確的?
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| (a)A “point-to-point” link is a link to connect two devices or hosts. 一個”點對點”的鏈路用來連接兩個裝置或主機 | |
| (b)A “multiple access” link is a link to connect many devices or hosts. 一個”多方存取”的鏈路用來連接多個裝置與主機 | |
| (c)A “point-to-point” link is a link to connect more than two devices or hosts. 一個”點對點”的鍊路用來連接多於兩個裝置或主機 | |
| (d)A “multiple access” link is a link to connect only two devices or hosts. 一個”多方存取”的鍊路用來連接兩個裝置或主機 | |
| (e)The IEEE 802.11 wireless LAN (WiFi) is a multiple access link. IEEE 802.11 無線區域網路(WiFi)是一個多方存取的鍊路 |
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1.4.Which of the following are “nodes” of a network?
下列哪些是網路中的”節點”?
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| (a)Switches 交換機 | |
| (b)IEEE 802.3 Ethernet protocol IEEE 802.3 乙太網路協議 | |
| (c)IEEE 802.11 wireless LAN (WiFi) protocol IEEE 802.11 無線區域網路(WiFi)協定 | |
| (d)Wireless Access points (APs) 無線網路基地台 (APs) | |
| (e)Routers 路由器 |
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1.5.Which of the following statements are correct for “store-and-forward” concept ?
下列哪些關於”儲存並傳送”的觀念是正確的?
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| (a)It’s a way for a network device to handle an incoming packet by storing the packet first and then forwarding the packet according to some switching/routing policy. 是一種網路裝置處理封包的方法，先將進入的封包儲存後，再依據交換或是路由原則將封包傳送出去。 | |
| (b)A router usually stores an incoming packet in the memory first and then lookups the routing table to determine which port to forward the packet. 一個路由器通常先將進入的封包儲存在記憶體中，然後透過查詢路由表來決定要將封包轉送至哪個接口。 | |
| (c)A switch usually stores an incoming frame in the memory first and then lookups the MAC address table to determine which port to forward the frame. 一個交換器通常先將一個進入的訊框儲存在記憶體中，然後透過查詢MAC位置表來決定該訊框應該要傳送至哪個接口。 | |
| (d)The store-and-forward technology is usually used in a circuit switched network. "儲存並傳送”技術通常在電路交換網路上使用。 | |
| (e)The store-and-forward technology is usually used in a packet switched network. "儲存並傳送”技術通常在封包交換網路上使用。 |
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1.6.Which of the following are correct for a “switched network” ?
下列哪些對於一個”交換網路”的敘述是正確的
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| (a)A switched network is a network connected by switches and routers. 一個交換網路是指透過交換器與路由器連線的網路。 | |
| (b)A switched network is a network connected by switches. 一個交換網路是指透過交換器連線的網路。 | |
| (c)The “topology” of a switched network is limited to be a “spanning tree”. 交換網路的拓樸”必須是一個”擴張樹”。 | |
| (d)The “topology” of a switched network is not limited, but the frames (packets) are delivered along the “spanning tree” of the switched network. 交換網路的”拓樸”並沒有特別限制，但訊框(封包)會透過交換網路中的”擴張樹”的路徑來傳送。 | |
| (e)The frames (packets) are delivered along the “shortest path” of the switched network. 訊框(封包)會經由交換網路中的”最短路徑”來進行遞送。 |
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1.7.Which of the following statements are correct for an “interconnected network” ?
下列哪些對於”互聯網路”的敘述是正確的?
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| (a)An interconnected network is a network that several networks are connected by switches. 一個互聯網路是一個用交換器連接多個網路的網路。 | |
| (b)An interconnected network is a network that several networks are connected by routers. 一個互聯網路是一個用路由器連接多個網路的網路。 | |
| (c)The “topology” of an interconnected network is limited to be a “spanning tree”. 互聯網路的”拓樸”必須是一個”擴張樹”的架構。 | |
| (d)The “topology” of an interconnected network is not limited, but the packets are delivered along the “spanning tree” of the connected networks. 互聯網路的拓樸無特別限制，但封包會經由連結網路中的"擴張樹”路徑來遞送。 | |
| (e)The packets are delivered along the routing path determined by the routing protocols. 封包會經由路由協議所決定的路徑來進行遞送。 |
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1.8.Which of the following statements are correct for “unicast/broadcast/multicast” ?
下列哪些對於”單點傳送/廣播傳送/群播傳送 “的敘述是正確的?
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| (a)For unicast, a packet is delivered to only a destination station. 對於單點傳送來說，封包只會被遞送到一個目的地工作站。 | |
| (b)For broadcast, a packet is delivered to multiple but not all the stations. 對於廣播傳送來說，封包會被遞送到多個但不是全部的工作站。 | |
| (c)For multicast, a packet is delivered to all stations of the network. 對於群播傳送來說，封包會被遞送到在網路中的所有工作站。 | |
| (d)In a switched network, a broadcast frame will be received by all the stations in the switched network. 在交換網路中，一個廣播訊框將會被所有在交換網路上的工作站所接收。 | |
| (e)In an interconnected network, a broadcast frame will be received by all the stations in the interconnected network. 在互聯網路中，一個廣播訊框將會被所有在互聯網路中的工作站所接收。 |
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