a certification practice test

Requirements: On-line system performance optimization, locating servers and online system bottlenecks Based on on-line experience data and expectation quantification Data Up Down On-line data 50 500 Test data 100 500~2000+ Test data 200

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? P

products open new box.1#include 2#include 3#include 4#include 5#include 6 using namespacestd;7 intA1,a2,a3,a4,a5,a6;8 intMain ()9 {Ten intN//Number of boxes One intX//1*1 number of boxes A intY//2*2 number of boxes - intt[4]={0,5,3,1};//3*3 can accommodate the number of 2*2 - while(cin>>a1>>a2>>a3>>a4>>a5>>a6) the { -n=0; - if(a1==0a2==0a3==0a4==0a5==0a6==0) - Break; +n+=a6+a5+a4+ (a3+3)/4; -y=5*a4+t[a3%4

the document The group leader himself although to go to the meeting in the morning, but also under great pressure to complete his task and the final summary, like!!! In the end, everyone completed a personal job description and submitted their homework before the deadline. As the leader summed up: "Group work condensed the original is not familiar but now seems very reliable, thank you!" With the release of this blog post, the group b

While 1: #死循环If S.find (i,start_postion)!=-1: #! =-1 said he found it.Max_occurrence_letter_positions.append (S.find (i,start_postion))Start_postion=s.find (i,start_postion) +1 #起始位置 +1 Keep your weight back, because find won't find it again.else: #当已查找不到目标字母来, it means all the letters have been found.Print "%s positions:%s"% (i,max_occurrence_letter_positions)Break #死循环需要加breakOutput Result:#{' A ': 3, ' B ': 3, ' I ': 2, ' H ': 2, ' K ': 1, ' J ': 1

Test-driven Development practice-Introductory article we talked about some basic test-driven development processes: 1. Write unit tests to make him light a red light 2. Write code to turn the test into a green light 3. Refactor

can be, similar to the bucket landlord1#include 2#include Set>3 #defineLL Long Long4 using namespacestd;5 ConstLL mod=1000000000000000003;6 SetS;7LL kase,bin[ the],a[ the],sum,mul=131ll;8InlineBOOLDfs (LL K,BOOLtwo,ll Sta)9 {Ten if(S.find (Sta)!=s.end ())return 0; One S.insert (Sta); A while(!a[k]k -) k++; - if(k==101)returnboth ; - if(

Learn more about the character test of Linux and the practice of bash scriptingOne, character test options= =: Tests whether two strings are equal, equals true, and not equal to false.！ =: Tests whether two strings are unequal, unequal to true, and equal to false.-N String: Tests whether the specified string is empty, NULL is true, and is not NULL for false.-Z St

Tags: penetration test Google search domain Methodology: detects, scans (port scans, vulnerability scans), and maintains access. I. Investigation Active investigation: Directly Interacts with the target, and the behavior may be recorded by the target. Passive detection: attackers can obtain massive amounts of information from the Internet and do not directly interact with the target. Information Mining: Httrack Google Site: do

meeting time: 2017 December 23rd Venue: East Nine teaching building teachers ' loungeMaster hold person: Wu Huiattendees: Wu Hui, liusi Jia, Gao Changlei, Wang Junjie, Wu HuijieRemember Record Person: Liusi Jiameeting Topic: The division of work and the initial arrangementTool selectionSoftware Testing course, the math exam is gradually approaching, our group set up, first discuss the division of labor, formally began to the operation of the specific arrangements. The static

volume/interface/function/accuracy? Is there a problem with the user experience? What are the user's suggestions for improving the product? Appendix Group basic information: Five team leader: Small Jin: Xiao Huang, Xiao Xiong, Trabecula, Xiao Long, Xiao Yin to complete the work Functional analysis of the system under test and writing of document related sections Write user res

Label:My environment : mysql:mysql-5.6.24-win32 JDBC Driver: Mysql-connector-java-5.1.22-bin.jar jmeter:apache-jmeter-2.13 1. Import the JDBC driver into the test plan 2, create a thread group, by default. If your business needs are self-setting 3. Create a JDBC Connection setting. Simply make a connection to the data

Name Mainly responsible for part Complete situation ZhihiheMr Jeremy Lau Phase one, software evaluation. The comparison and analysis of the website of China Science and Software Institute are mainly embodied in the aspects of function and interface. Describe the site's flaws. In progress Luchamvy Phase two, user research. The use of the website of the Chinese branch of a user to conduct research, in

Program code:Li Qi #includeusing namespacestd;intLargest (intList[],intlength) { intI, Max; Max= list[0]; for(i =0; i ) { if(list[i]>max) {Max=List[i]; } } returnMax;}voidMain () {intlist[5],length; inti; CIN>>length; for(i =0; i ) {cin>>List[i]; } coutlargest (list, length);}2. Error findingThe max variable is initialized, or the computer is assigned a value based on the previous storage, which may result in an error.IOperation R

. How to count off? Define a variable count log off3. Once the count is 3, what do you do with it?4. How do I get rid of a person? Place the element 05. Indicates the current or the number of people? Define the variable number;6. Because of the number of uncertain cycles, cycle conditions with Whlie numbers > 17. How to cycle off? If i = 13, go to the first person to continue the count.The code is as follow

;publicclassmain{ publicstaticvoidmain (String[]args) { scannerin=newscanner (system.in); stringnum=in.next ();int Result=0;while (result!=6174) { intleft=0; intright=0; char[]temp=creat (num); char[]l=newchar[4]; arrays.sort (temp); for (inti=3;i>=0;i--) { left=left*10+temp[i]-' 0 '; right=right*10+temp[3-i]-' 0 '; l[i]=temp[3-i] ;} if (left==right) { system.out.println (Newstring (L) + "-" +new String (temp) + "=0000"); return;} result=left-right; system.out.println (Newstring (L) + "-" +newst

=val12, Param21=val21, Param22=val22]/ajaxpost1.do::jsonresbean:httpresults [Result11=val11, Result12=val12, Result21=val21, Result22=val22]3. Post methodAccess address:/demoweb/jsp/springjson/ajaxpost2.jsp, Button link is the rest service/ajaxpost2.do::jsonparams:{param11=val11, param12=val12, Param21=val21, param22=val22}/ajaxpost2.do::jsonresbean:httpresults [Result11=val11, Result12=val12, Result21=val21, Result22=val22]4. Single Object return/demoweb/rest/springjson/showshop.do,

generates an intermediate table. Other parts, according to the code on the book to operate, basically do not encounter any difficulties. Chapter IV user reviews 1. Books 148 pages and 151 pages of actual machine running resultsNote: This chapter mainly realizes the blog user comment function, as well as adds a wardens the privilege, the concrete realization does not have any difficulty, according to the book's Code to operate the machine.

V directly after-su NMAP-SUV 192.168.0.1 XMAS scan: for operating systems running unxi and Linux. NMAP-SX-p-PN 192.168.0.1 Using-SV, you can analyze the banner information to determine the port situation when the other party uses this port. -O parameters provide information about the operating system. -The t parameter changes the scanning speed. The parameter range is: 0 ~ 5. Reduce the speed to avoid being detected. Too fast will lead to inaccurate results. Common Remo

/findresults11File:/home/kiosk/desktop/rh124-exam1 Page 2 of 2Find all lines containing ich in the file/usr/share/mime/packages/freedesktop.org.xml, will findCat/usr/share/mime/packages/freedesktop.org.xml | grep "Ich" >/root/linesThe lines are copied to/root/lines in sequence.File, the/root/lines file does not contain spaces, and the contents of the line are the exact/usr/share/mime/packages/freedesktop.org.xml original line of the source fileCopy%s/^\ *//g/* Remove all spaces that begin with s