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
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
※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8週：TCP 與網路阻塞偵測與控制技術
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7.5. Assume LAN1 and LAN2 are connected by a router R, stations A,B are connected to LAN1, and stations C, D are connected to LAN2.
Which of the following statements are correct ?
假設LAN1、LAN2連接在路由器R，主機A、B與LAN1連接，主機C、D與LAN2連接。下列哪些敘述正確?
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| (a)When station A wants to send a packet to station B, it can send the packet to station B directly by putting the MAC address of station B into the frame. 當主機A要送封包給主機B，它可以將B的MAC位址放進訊框而直接傳送給主機B | |
| (b)When station A wants to send a packet to station C, it can send the packet to station C directly by putting the MAC address of station C into the frame. 當主機A要送封包給主機C，它可以將C的MAC位址放進訊框而直接傳送給主機C | |
| (c)Station A needs to know the MAC addresses of stations B,C,D in order to send frames to them directly. 主機A需要知道B、C、D的MAC位址才可直接發送訊框給它們 | |
| (d)When station A wants to send a packet to station B, it needs to send the packet to Router R first by putting the MAC address of Router R into the frame. 當主機A要送封包給主機B，它需要將路由器R的MAC位址放進訊框而先傳送給路由器R | |
| (e)When station A wants to send a packet to station D, it needs to send the packet to Router R first by putting the MAC address of Router R into the frame. 當主機A要送封包給主機D，它需要將路由器R的MAC位址放進訊框而先傳送給路由器R |
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