acls written test

answerPart II: Security SectionTopic 12: Please list Common Web security issues (not less than three), explain its principle, harm.Reference answerTopic 13: Please list common Dos attack types, and introduce their principles and defense methods separately.Reference answerTopic 14: The server is compromised, as a security manager, what should you do with it?Reference answerPart Three: Network partTopic 15: Please briefly describe the three-time handshake process for TCP.Reference answerTopic 16:

Reference: https://hoofoo.me/article/2017-04-11/%E8%B5%9B%E7%A0%81%E7%BD%91%E5%89%8D%E7%AB%AF%E7%AC%94%E8%AF%95%E6%9C% Ac%e5%9c%b0%e7%8e%af%e5%a2%83%e6%90%ad%e5%bb%ba.htmlImplementation of the Print methodThis is no difficulty, just console.log change the name of the thing, a line of code can be solved.var print = Console.logimplementation of Read_line methodAs we Node.js all know, it is an asynchronous language, so it is readline also an asynchronous operation, according to the node. JS Chinese

)Print (' Run Tstr.pop (1), Tstr is ', tstr)Tstr.pop (-1)Print (' Run Tstr.pop ( -1), Tstr is ', tstr)# # Other data can also be used in arraysTSTR2 = [' Z1 ', ' Z2 ']Print (' Tstr2 is ', TSTR2)Tstr.insert (1,TSTR2)Print (' Insert tstr2, Tstr is ', tstr)Tstr2.insert (2, ' Z3 ')Print (' After TSTR2 changed, Tstr2 is ', TSTR2)Print (' After TSTR2 changed, Tstr is ', tstr)# # defines and references a tuple array, uses (), cannot be modified after a tuple definition, 1 elements must be defined with

-digit value into an internal symbol and byte array;(3) Provide the function of subtraction.public class BigInteger{ int sign; byte[] val; public BigInteger(String val){ sign = ; val = ; } public BigInteger add(BigInteger other){} public BigInteger subtract(BigInteger other){} public BigInteger multiply(BigInteger other){} public BigInteger divide(BigInteger other){}} 备注：想要写出这个完整的代码，是比较复杂的，笔试和面试中可能没有足够的时间写出，感兴趣的伙伴可参看jdk中自带的java.math.Biginteger类的

Example one: Public class INC { publicstaticvoid main (string[] args) { INC inc=New Inc (); int i=5; Inc.fermin (i); I=i++; // temp=i;i++;i=temp; System.out.println (i); } void Fermin (int i) { i+ +; }}The result is:5Example two: Insert sort, array out of bounds Public classinsertsort{ Public Static int[] Sort (int[] intarray) { intSize=intarray.length; for(inti=1;i){ for(intJ=i;intarray[j]) { intTemp=intar

Transferred from: http://www.cnblogs.com/charley_yang/archive/2010/12/08/1899982.htmlNew allocates the memory space of a single object when using Delete, reclaim the memory space of a set of objects allocated by new[] with delete[]Basic types of objects do not have destructors, so it should be possible to reclaim the array space of basic types with delete and delete[], but only with delete[] for an array of class objects. For a single object of new, you can only use Delete to reclaim space with

Problem Description:Problem Analysis:Solution One: Set the double pointer, start,end; when data[start]= ' 1 ', data[end]= ' 0 ', indicates the need to exchange, the number of times plus 1; otherwise data[end]= ' 1 ' will move the end pointer forward; Data[start]= ' 0 ' Moves the start pointer back;The algorithm only needs to traverse onceSolution Two: First to calculate the number of characters in the array of 0 zero, and then calculate the number of the first zero character 1, that is, to excha

Both of them look at the code, and then find the error in the code and make an explanation. Topic Oneint array[] = {1,2,3,4,5,6}; #define ELEMENTS (sizeof (array)/sizeof (array[0)) int main () { int d =-1, x; for (int i = D; i misunderstanding: This article mistakenly thought #define that part of the error. Think elements can not find the length of the array, the result will be 1. There is a misunderstanding here, that is, when the sizeof array, the total size of the array

to generate "11" in the constant pool.S3.intern (), this line here doesn't really work. Because "11" already exists.As a result, S3 and S4 have significantly different reference addresses. Therefore, false is returned.3 SummaryFinally to do the ending. Now let's look at the introduction of the opening example, is it clear?New New String ("Calvin"); = = str1) ; = = "Seucalvin"); Str1.intern () = = STR1 is the case in the example above, Str1.intern () finds that there is no "seucalvi

subscript first move, and record the current temporary maximum value of the underlying (such as I first move, record I_max), when encountered a new maximum value of the time , not only to the I to the local variable zeroing, but also to compare the maximum value and J corresponding value of the size relationship, and then the smaller value corresponding to the subscript continues to move, until the two subscript meet, traversed the array so far.Program codeintVolume (int* Height,intN) {inti =0;

2 203 3 301 ...... --Single row to multiple lines--Creating tables and DataCreate TableTTT (IDinteger, thevarchar2( $));Insert intoTTTSelect 1,'101,102' fromDualUnion AllSelect 2,'201,202,203' fromDualUnion AllSelect 3,'301' fromdual;Commit;SELECT DISTINCTId,regexp_substr (Hostel,'[^,]+',1, Level,'I') as STR fromTttconnect by Level LENGTH (Guest)-LENGTH (Regexp_replace,',',"'))+1;Oracle Database Development inter

, score)Answer: Select t3.* from (select top 2 t2.* from (select Top 3 name,subject,score,stuid from Stuscore where subject=\ ' math \ ' Orde R by score Desc) T2 ORDER by T2.score) T3 ORDER BY T3.score Desc11. Find out the ranking of John Doe's mathematical achievementsAnswer:Declare @tmp table (PM int,name varchar (), score int,stuid int) insert INTO @tmp select Null,name,score,stuid from Stuscore where subject=\ ' math \ ' ORDER BY score Descdeclare @id intset @id =0;update @tmp set @[email pr

Yesterday collapsed Baidu online written test system again and again mistakes.If I hadn't received a 10-minute delay, I was still playing around and I was only more than 50 minutes into the system.Choose the question with the mask to guess. Design questions are skipped directly. Fortunately, two programming questions can be written, the final question has not yet

For help. The local test of the website is OK. it cannot be written after the server is uploaded. For help. The local test of the website is OK. it cannot be written after the server is uploaded. What is the problem. How can this problem be solved! Reply to discussion (solution) Is there no w

School recruitment quarterly written test --- Amazon 2014 pen exam (1/4) 1. Preface: Last year, I had to recruit and find a job. It was in a hurry. It has been a variety of lectures and written tests recently. The various types of abuse are terrible! Share yesterday's Amazon online pen questions. The level is limited here, so keep it all here! 2. Check

the project;3. two algorithm problems;1> a string of beads (m), having n colors (n "=10), designing an algorithm that takes out one of the two colors in the N and minimizes the length. and analyze the complexity of time and space.2> from 1 to 100 million, all appearing numbers and (125=1+2+5), manual computers come out;How I feel:1. Is the internship recruitment, and no preparation, the written test can pa

"19 Millet network operation and maintenance engineer written test is true, can you pass the customs?" 》Topic Goto: Marco Linux operationsThe first part: Linux basicsTopic 1:There are 100 picture files, their addresses areHttp://down.xiaomi.com/img/1.pngHttp://down.xiaomi.com/img/2.png...Until Http://down.xiaomi.com/img/100.png.Download these 100 image files in bulk and find out which files are larger than

Server and so on.2. Under the premise of not destroying the 1 deployment, also use Oldboy user to complete multiple keys to a lock (B,c key, a lock)-Free landing deployment as follows:B---------->aC---------->aNote: This topic is used in the production environment, data backup, etc., but the production environment this way is recommended to be implemented by the daemon process.The goal of the final realization is, 1, 22 topics to achieve two-way password-free authentication login.3. If you incr

# # defines the list arrayLstrs = [' T1 ', ' T2 ', ' T3 ', ' T4 ']Print (' Lstrs is ', lstrs)i = 0# # Test for LoopFor LSTR in Lstrs:Print (' lstrs[%d] is '% i,lstr)i = i + 1Print (' End for Loop ')j = 0# # Test While loopWhile J Print (' lstrs[%d] is '% j,lstrs[j])j = j + 1Print (' End While Loop ')K = 0# Test Break and continuePrint (' K=0, kWhile K if k = = 1:

= Tempstr.trim ();}catch (Exception e) {System.err.println (E.getmessage ());}return tempstr;}69. Brief description of logical operation (,|,^) and condition operation (,| |) The difference.The difference between the main answer two: a. Conditional operations can only operate on Boolean, while logical operations not only manipulate Boolean, but also manipulate numeric typesB. Logical operation does not cause a short circuit70. There are several forms of XML document definition. What are the ess