The Ethernet II frame contains the Destination and Source MAC, followed by the Type field, which indicates the upper layer protocol contained in the frame (IP in this case, indicated by 0x0800). Wireshark removes the Frame Checksum (FCS) from the frame. Notice that clicking on Ethernet II will highlight the related hex representation of its header at the bottom of the window.ICMP operates on top of the Internet Protocol (at Layer 3) and is therefore contained within an Ethernet II frame/IP packetEcho Request Example (cont.)The IP packet contains all the standard IPv4 header fields. Most notably, the Protocol field (1 for ICMP) that indicates the upper layer protocol used, and the Source and Destination IP addresses. Again, the hex for the IPv4 header is highlighted below.ICMP operates on top of the Internet Protocol (at Layer 3) and is therefore contained within an Ethernet II frame/IP packetEcho Request Example (cont.)The ICMP header shows that this packet is an Echo Request (Type 8) and its sequence number (14). In addition, the ICMP request contains 32 bytes of Data. Notice that the length of the entire FRAME is 74 bytes, but the data portion is only 32 bytes.The Echo Request was sent at Time 0.000000. This time indicates the time since the packet capture session was started on the node.Echo Reply ExampleThe ICMP header in Packet 2 shows that this packet is an Echo Reply (Type 0) and its sequence number (14). The only way that a node knows that it received a reply to a given Echo Request is by receiving this same sequence number in an Echo Reply from its originally intended destination IP address! The time difference between Packet 1 and 2 is 3.678 ms, which is the round trip time (RTT) for the “ping”.The combination of Source/Destination IP and sequence number allows you to associate an Echo Request/Reply pair.PCA ToolThe packet capture analysis tool will consist of three mainphasesPacket Filtering: keep only the packets we want toanalyzePacket Parsing: read relevantpacket fields into memory for processingCompute Metrics: using packet fieldsto compute metrics

所有的编程代写范围：essayghost为美国、加拿大、英国、澳洲的留学生提供C语言代写、代写C语言、C语言代做、代做C语言、数据库代写、代写数据库、数据库代做、代做数据库、Web作业代写、代写Web作业、Web作业代做、代做Web作业、Java代写、代写Java、Java代做、代做Java、Python代写、代写Python、Python代做、代做Python、C/C++代写、代写C/C++、C/C++代做、代做C/C++、数据结构代写、代写数据结构、数据结构代做、代做数据结构等留学生编程作业代写服务。