network practice questions

Computer Network interview questions, computer network questions 1,OSI Layer-7 protocol,Layer-4 TCP/IP protocol,Five-Layer Protocol mentioned in instructor Xie xiiren's online textbookComparison Note: (1) OSI's layer-7 protocol is only a theoretical protocol, which is not actually used. (2) the architecture of the lay

The following are the original C ++ engineer recruitment questions of our company. The questions are difficult and there are no strange questions. If you get a correct 60 or more, congratulations! You are a qualified network development engineer. 1. when writing the "=" condition judgment, it is often possible to write

"Network attack and defense technology and practice" 11th Week operation SQL injection attack and Practice 1. Research on the principle of buffer overflow, at least for two kinds of database to study the buffer overflow principle?? Inside the computer, the input data is usually stored in a temporary space, the temporary storage space is called a buffer, the lengt

Winpcap network programming 10-Winpcap practice, two hosts communicate through the intermediate host, winpcap Network Programming Note: I will not make this blog completely public if I reach out to the party, the source code, and so on. This article provides some ideas for network programming or curriculum design .. Ok

this and put??? Well, it would call accumulate??? System.out.println ("object:" + object.tostring ()); }}Console Print Results:jsonObject: {"one":"first"}jsonObject: {"one":"first","two":"second"}jsonObject: {"one":"first","two":"cover"}jsonObject: {"two":"cover"}jsonObj: {"Servers":[null,"Tomcat"],"Codes":["Java","JavaScript"]}object: {"price":"1000"}Questions: net.sf.json.element :Put a key/value pair in the JSONObject. If the va

few parameters -m Specifies the attack mode with the following several 1）t/test 测试连接是否是注入点 2）f/fingerprint 指纹识别，判断用户，数据库，xp_cmdshell是否能用等等 3）b/bruteforce 暴力破解sa密码，可以-w指定字典，也可以不适用字典，这样sqlninja就会自己穷举 4）e/escalation 提权用，必须用-p指定sa的password，成功就会把当前数据库用户加入到sa组里面 5）x/resurrectxp 尝试恢复xp_cmdshell 6）u/upload 使用get和post上传二进制文件，-p可以指定sa的password，-g表示只生成上传文件，但并不上传 7）s/dirshell 获取目标主机的shell 8）k/backscan 查看开放的目标端口 9）r/revshell 反弹会一个shell，和dirshell相反 10）d/dnstunnel 指定使用dns作为传输通道，可用-p可以指定sa的passw

remote Linux servers? Upload files and download files via what?A.ssh XsheelB.SCP some software can upload downloaded files, no use.9.What is the main use of the/mnt directory? What does the/root directory have to do with the root user? /What is the connection between the root directory and the/boot directory? A./MNT mount directory for external devicesB./root is the root user directoryC./boot10. What happens when the RM-RF * is executed on one day? Please give an example.A. Delete all files in

Import Java.io.BufferedReader;Import java.io.IOException;Import Java.io.InputStreamReader;Import Java.util.StringTokenizer;/*** Suppose the strings are similar to the ABA and AAB are equal, now give you the two sets of strings, please programmatically compare them to see if they are equal* */public class Equaldemo {public static void Main (string[] args) {First read to a string of charactersBufferedReader br = new BufferedReader (new InputStreamReader (system.in));String s = null;try {s = Br.rea

transfer rate. By adopting such congestion avoidance mechanisms, TCP finally minimizes the CWnd depletion event to some extent it consumes the allocated capacity for all connections. So now, finally, we have achieved the goal, explaining the importance of the initial congestion form parameters.Network congestion can only be measured by dropping packets. A new or spare connection because there is not enough packet loss data to justify creating the optimal size of the congested form; TCP takes a

Network security experts use practice to tell you How situation awareness should be implemented and how network security situation should be handled. In a large-scale network environment, cybersecurity Situation Awareness obtains, understands, displays, and predicts the future development trend of all security elements

Sangfor pen questions (after-sales by network engineers) and Sangfor questions There are 3 to 3 major questions in total, 1 select Mainly include IP address calculation, http protocol, vrrp protocol, 2. Fill in blank questions for linux A. linux displays all system load

[Unity3d ARPG online game Programming practice]Want to kill, Baidu has a half-day also do not know how to write local services, the results of the server in the resources can be used ~ ~ ~ (>_Two methods are used1 This method particularly depressed, own write server, own write client can communicate. But this server used in [Unity3d ARPG Network Game Programming practic