2br02b questions and answers

normalRequirements: Shell array method Implementation, detection strategy as far as possible to simulate user access ideasHttp://www.baidu.comHttp://www.taobao.comHttp://www.51liuzw.comhttp://192.168.50.199#!/bin/bash#author:liuwei#site:www.51liuzw.comarray= (HTTP// www.baidu.comhttp://www.taobao.comhttp://www.51liuzw.comhttp://192.168.50.199) fornin${array[ *]};d ourl= ' curl-i-m2 $n 2> /dev/null|egrep "200|302" |wc-l ' if[ "$URL" -eq1];then echo "$n isok" else echo "$n isnotok" fidone Resul

thread in the ready state by dispatching it to occupy the CPU and turn it into a running state. At this point, the system actually executes the thread's run () method.④ Blocking and waking threadsBlocking state (Blocked): A running thread enters a blocking state when it cannot continue running for some reason. These reasons include:(a) When a method of blocking type such as sleep () of a thread object is executed, the thread object is placed in a block set and waits for a timeout to automatical

Use Ghost to make the partition image file, and then overwrite the image file on the original partition when recovering. In many people's view, the use of Ghost backup and restore files is a very dangerous operation, a little attention will result in an "innocent" section of the file is overwritten, causing irreparable damage. In fact, you can quickly and securely back up and restore your system as long as you are doing backup and recovery operations in exactly the way described in the how-to tu

. TreeSetthe largest and smallest elements can be obtained from. Summary: Collections.sort() provides a list that is sorted once. PriorityQueueand TreeSet Dynamic maintenance of the ordered collection.9. Copy ListThere are two ways to copy a list. One is to use a ArrayList constructor. 1 ArrayListnewArrayList The other is to use Collections.copy() . 12 ArrayListnewArrayListCollections.copy(dstList, srcList); It is important to

style sheet. Fouc can occur under IE in Windows (that is, page flicker problems caused by style invalidation).The overflow property of the CSS property defines how the content of the overflow element content area will be handled? When the parameter is scroll, scroll bars will appear. When the parameter is auto, a scrollbar appears when the child element content is larger than the parent element. When the parameter is visible, the overflow content appears outside the parent elem

business objects and control logic with control inversion. It also allows binding of request parameters and business objects in a declarative manner.Dispatcherservlet.The Spring MVC Framework is designed around Dispatcherservlet to handle all HTTP requests and responses.Webapplicationcontext.Webapplicationcontext inherits ApplicationContext and adds some unique features to the Web application that are different from the general ApplicationContext because it handles the subject and finds the ass

Classical algorithm face questions and answers 1. Hand hands coincide several times on the surface there are 60 of small lattice, each Georg represents one minute, the hand hour walks 1/12 small lattice, the minute hand walks 1 compartments every minute, from the first coincidence to the second coincidence the minute hand is more than the hand hour to walk a circle namely 60 small lattice, therefore 60/(1-1

This article summarizes 12 questions and answers about C language, it is helpful for deepening the difficulty understanding of C language programming, the reader can refer to: 1, gets () method Q: The following code has a hidden problem, can you find it? A: This unobtrusive problem is the use of the Gets () method. This method accepts a string type parameter, but does not detect if the value has enough s

Reproduced from: Database Face questions and answers Student (stuid,stuname,stuage,stusex) Student table Stuid: School Number stuname: student name; Stuage: Student age; Stusex: Student gender Course (Courseid,coursename,teacherid) timetable CourseID, course number; Coursename: course name; Teacherid: Teacher number Scores (stuid,courseid,score) score sheet Stuid: School number; CourseID, course number; Sc

This article originates from: http://www.dbasupport.com The answer here is not very comprehensive, these questions can be explained through a number of angles, perhaps you do not have to give a full answer in the interview process, only through your answers to the interviewer to understand your understanding of the Oracle concept. 1. Explain the different points of cold and hot backup and their advantages

Ten questions about twisted pair line ten answers While learning to write.Personal level is limited, if there is falsehood please treatise. ：）------------------------------------------To transfer please keep the following information:Baishi54baishi.126.com2005-4-29--------------------------------------------1. Twisted pair RJ45 Interface line sequence label how to look. I don't get it.A: The crystal Head ha

basic relationship R , then property A cannot take a null value. If the attribute(or attribute group) Fis the basic relationshipRthe outer code of it with the basic relationshipSthe main codeKsrelative should(Basic RelationshipsRand theSIt's not necessarily a different relationship.), then forReach tuple in theFThe value must be: Or take a null value(FEach property value is a null value); or equal toSThe primary code value for a tuple in the That is, propertyFIs not the primary property itself

= "Aaaabbbccccddfgh"; var obj = {};for (var i=0;i10, write a function, clear the string before and after the space. (compatible with all browsers)function Trim (str) {if (str typeof str = = = = = = "string") {return str.replace (/(^\s*) | ( \s*) $/g, ""); Remove front and back blank characters}}other1. What is the process of a complete HTTP transaction? Basic Flow:A. Domain Name resolutionB. 3-time handshake to initiate TCPC. Initiating an HTTP request after establishing a TCP connectionD. ser

: localstorage for persistent local storage, data never expires, and browser shutdown is not lost. Sessionstorage pages in the same session can be accessed and the data is destroyed when the session ends. So sessionstorage is not a persistent local store, it's just session-level storage7. What are the new form elements in HTML5?HTML5 has added a number of form elements that allow developers to build better Web applications. DataList datetime output keygen date month Week time color number range

the subject and finds the associated servlet.67. What is the controller of the Spring MVC framework? The controller provides an access to the application's behavior, which is typically implemented through the service interface. The controller parses the user input and translates it into a model that is presented to the user by the view. Spring implements a control layer in a very abstract way, allowing the user to create multiple-purpose controllers.@Controller AnnotationsThis note indicates th

business objects and control logic with control inversion. It also allows binding of request parameters and business objects in a declarative manner.Dispatcherservlet.The Spring MVC Framework is designed around Dispatcherservlet to handle all HTTP requests and responses.Webapplicationcontext.Webapplicationcontext inherits ApplicationContext and adds some unique features to the Web application that are different from the general ApplicationContext because it handles the subject and finds the ass

rating interface shown in Listing 3 provides credit history information. It requires a customer object that contains client information. The implementation of this interface is provided by the Creditrating class.Listing 4. CreditlinkinginterfacePublic interface Creditlinkinginterface {Public String getUrl ();public void SetUrl (String URL);public void Linkcreditbankaccount () throws Exception;}The credit link interface connects the credit history information with the bank information (if necess

Answers are provided to the written examination questions of a large network company. 1. there is a forum where the post data is huge. please briefly describe how to improve the efficiency of searching for posts. In terms of programs, the page cache technology can be used. There is a forum on the front-end interface. there is a huge amount of post data. please briefly describe how to improve the efficiency

, followed by a bubbling event.two · Routed Events (routed event) and Commands (command)The Event and Command are the foundation of the program's internal communication, and Routed Events can initiate multiple controls and communicate with the user in an orderly manner.Commands is the core architecture provided by the. NET Framework to activate and remove high-level tasks.The animation derived from this is the further events. Allows you to use the event schema in a friendly and interactive way,

("title: {0}", Titile);Console.WriteLine ("Author: {0}", author);Console.WriteLine ("Publishing house: {0}", press);Console.WriteLine ("Prices: {0}", price);}}constructor functionClass callbook{static void Main (){Book Book1 = new book ("123456789");//ObjectBook1. Show ();//functionConsole.WriteLine ();Book1. TITLE = "min";Book1. AUTHOR = "Yes";Book1. Press = "Ah";Book1. Price = 12;Book1. Show ();Book1 = new book ("1236547", "Good", "Mountain", "up", 14);//Question 2?????????? No book here.Can