promotion image of download ymail app
Promoted
Anonymous
Anonymous asked in 電腦與網際網路軟體 · 1 decade ago

有對電腦網路與英文皆有涉獵的高手嗎?

Hands-on

1. Take a look at real packets : Use Wireshark (Ethereal) or similar software to capture packets from your Ethernet network interface card (NIC) and answer following questions.

(a) How to differentiate unicast, multicast, and broadcast packets? For each type of packet, list one example from your captured packets. (e.g., an X (protocol) with Y operation is a broadcast packet.)

(b) How to tell the layer 3 protocol of an Ethernet frame? List five packets of different layer 3 protocols or frame formats from your captured packets? (Note that there are four Ethernet frame formats: Ethernet II (DIX 2.0), IEEE 802.3 raw, IEEE 802.3 SAP, IEEE 802.3 SNAP)

2. Take a look at ICMP packets: Use Wireshark (Ethereal) or similar software to find out how ping and traceroute are implemented using ICMP messages. You must show the packets captured to verify your answer. Note that these two commands may be implemented differently on different operation systems.

3. Use Wireshark (Ethereal) or similar software to find out what transport and application-layer protocols are used in Skype, MSN, and YouTube.

OK,先跟各位報告一下,我不是來求答案的,這是我的作業題目,但重點是@@,英文看不是很懂,想請教一下有沒有大大能為我「專業翻譯」一下這些題目,奉上20點感謝。

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    1.看真正封包:使用Wireshark (Ethereal)或類似軟體從您的乙太網路介面卡(NIC)擷取封包並且回答以下的問題。

    (A) 如何區分單點傳送,多點傳送,和廣播傳送嗎?從每種類型封包中列出您擷取的封包的其中一個例子。(例如,X (協定) 與 Y 操作是一個廣播的封包)

    (B) 如何判斷在一個乙太網路訊框的第3層協定嗎?從你擷取的封包中列出五個封包在不同的第三層協定或訊框格式?(注意有四個乙太訊框格式: Ethernet II (DIX 2.0), IEEE 802.3 raw, IEEE 802.3 SAP, IEEE 802.3 SNAP)

    2.看ICMP封包:使用Wireshark (Ethereal) 或類似軟體,找出ping和traceroute的都是使用ICMP消息來實現的。你必須顯示封包擷取來驗證你的答案。請注意這兩個命令可能會實現以不同的方式不同操作的系統上。

    3.使用Wireshark (Ethereal)或類似軟體,找出哪些傳輸和應用層協定使用在 Skype、 MSN和 YouTube。

    • Commenter avatarLogin to reply the answers
Still have questions? Get your answers by asking now.