rhce 7 exam questions

51cto college specially sorted out "2014 network administrator-exam exercise Questions and Answers" in the soft exam preparation season to help schools pass smoothly! More Software Proficiency Test For more information about tutoring and questions, see 51cto school-soft test category ! View summary: Exercise

number and find the average score for each group of passing persons (grade >= 60) (average number of passing persons per course)3. Ask for an average of all courses for each student4. The average score for each student (exam result) Pass Course5. Average score for each student in each internal test (average of each course per learner)6. Check the average score of the students who have done the exam (find o

zcvf/backup/etc-$ (date +%f). tar.gz/etc/1.10Add a virtual userMysqlSpecifyUidto be888Useradd-u 888-s/bin/nologin MySQL1.11Write timed Tasks,every night12Click Delete/var/spool/postfix/maildrop/directory under7days before the file. Script Name: rmmaildrop.sh script content:/bin/rm $ (find/var/spool/postfix/maildrop/-type f-mtime +7)Scheduled Tasks: XX * * */bin/sh rmmaildrop.sh>>/dev/null 2>11.12to bealex888User ConfigurationSudopermissions that requ

################################################################This article extracts from the old boy Linux practical operation and maintenance Training Center before the exam question (answer part)If reproduced, please be sure to keep the link and copyright information herein.Welcome to Yun-Brother together to Exchange Linux/unix website operation and Maintenance technology!Website operation and Maintenance Exchange Group: 114580181 45039636 3708178

packaging tools and write the corresponding compression decompression parameters. 5, how to check whether to open 22 port, and see if the sshd process exists? 6, the modification time under the/data directory is 7 days ago, and files larger than 100k are copied to the/tmp directory. 7, find out the system more than 50k and less than 100k of the file, the file Oldboy replaced with Oldgirl. 8, now the file B

also be used separately awk,sed command answer).Answer:4. Please give the path of the Eth0 NIC profile and the path of the client DNS by default.Answer:5. Find all the files in the current directory and replace the www.etiantian.org string in the file with the www.oldboy.ccAnswer:6. Question: How to give Oldboy file-rw-r--r-x permission propertiesAnswer:7. Execute the following command when prompted to enter a password, please ask the password to ent

scrolling position are:Answer: (A) A, Contentoffset B, Contentsize C, Contentinset D, Scrollindicatorinsets ※ Judgment question (total 5 questions, 3 points per question) 1, UISlider, Uiswitch, Uitextfield These classes are inherited from the Uicontrol class.Answer: (T) That's right Error 2, [Segmentedcontrol Titleforsegmentatindex:] Indicates the option to specify indexed text.Answer: (

activity C, two options are not correct D, two options are correct How to deliver a message to a running service () A, by registering receiver B, through intent C, by defining the Aidl interface D, are correct When a video or audio is playing, will the video or audio automatically hang when a call is reached? （） A, will not B, will C. Some hand opportunities, some mobile phone will not D. All the above is wrong How to support language internationalizati

, you cast the past, and some company requirements are everywhere to copy the requirements of others company. 3After the interview must be done experience summary, will not be a problem to find the answer, do not in the same place again. 4the mentality of the interview must be better, not too nervous, encounter no problem, you can also ask the interviewer, of course, some interviewers will refuse to answer your questions, but it does not matter, you w

...";M_sex = false;}Must not be preceded by parentheses ()public bool Sex//For subclasses set the base class variable{get {return m_sex;}set {m_sex = value;}}public string Sound{get {return m_sound;}set {M_sound = value;}}Public virtual string Roan ()//virtual method{Return "Animal" +m_sound;}}Class Dog:animal{Public Dog (){Sex = true;Sound = "Wow ...";}public override string Roan ()//override method{Return "Dog:" + sound;}}Class Cat:animal{Public Cat (){Sound = "Miaow ...";}public override str

continuous. If the $x _0\not\in\bbq$, then to $\forall\ \ve>0$, to meet the $1/n\geq \ve$ of the $N $ only a limited number, while in $ ([x_0],[x_0]+1) $ can form into $M/n$\ ($M \in\bbz,\ 1/ N\geq \ve$) has only a finite number of rational numbers. Take $\delta>0$, so that the $U (X_0,\delta) $ does not contain these rational numbers, then $$\bex x\in U (X_0,\delta) \ra |f (x)-F (x_0) |8. Prove that the continuous function $f (x) =\sin 1/x$ in $ (0,1) $ is not consistent continuous.Proof: Take

gives a rational number in the form of "A1/b1 a2/b2" in a row of two fractions, where the numerator and denominator are all positive integers within the range of int types.Output format:The relationship of two rational numbers is output in a row according to the format "A1/B1-a2/b2". where ">" means "Greater than", "Notice that there is a space before and after the relationship character.Input Sample:1/2 3/4Sample output:time limit: 500ms memory limit: 32000kb1231NetEase Cloud Classroom _c Lang

more efficient. What does DDL and DML stand for? Answer: ddl:date definition Language (data definition language), including alter, rename, create, drop ...Dml:date manipulation Language (Data manipulation language) What statements does Oracle use to assign permissions to users? Answer: Grant......to ...Three, there is an Employee form EMP (ENO,ENAME,SALARY,DNO), wherein the meaning of each field is the employee number, name, salary and department number, there is a D