Consider a TCP connection between Host A and Host B. Suppose that the TCP segment traveling from Host A to Host B have source port number x and destination port number y. What are the source and destination port numbers for the segments traveling from Host B to Host A?
举一反三
- (7-2)下面哪个是合法的URL格式?() A: protocol://resourceName/host:port/ B: protocol://port:host/resourceName C: protocol://host:port/resourceName D: protocol://resourceName:port/host
- Linux系统中,tcpdump监听网卡 eth0,对方主机IP为10.1.1.180,tcp端口为80的数据,相应命令为 A: tcpdump -h eth0 -nn ‘tcp and host 10.1.1.180:80’ B: tcpdump -i eth0 -nn ‘tcp and host 10.1.1.180:80’ C: tcpdump -h eth0 -nn ‘tcp and port 80 and host 10.1.1.180’ D: tcpdump -i eth0 -nn ‘tcp and port 80 and host 10.1.1.180’
- DHCP代表什么?() A: Dynamic Host Configuration Protocol B: Dynamic Hosting Configuration Protocol C: Dynamlc Host Computer Protocol D: Dynamic Host Computer Port
- Host A sends a TCP segment (Seq = 43, ACK = 103), to which host B replies with a TCP segment (Seq = 103, ACK = 57). The payload of the first TCP segment is
- Given 130.130.10.1/18, what does /18 mean? A: The port number of the server B: The number of bits dedicated to the network ID C: The number of subnets D: The last 18 bits dedicated to the host ID.