Unix面試題(英文附答案)5

1、1Unix面試題（英文附答案）1問(wèn)題：Unix 面試題（英文 附答案）1-7 回答：86. fork 系統(tǒng)調(diào)用能：把當(dāng)前進(jìn)程復(fù)制一份，產(chǎn)生一個(gè)新進(jìn)程87. Which files are used to con figureTCP Wrappers/etc/hosts.allow and /etc/hosts.de ny88. /boot 目錄用來(lái)存放 Linux 啟動(dòng)時(shí)所需要的一些數(shù)據(jù)和文 件，如果該目錄被破壞，系統(tǒng)將不能夠啟動(dòng)，缺省情況下該目錄應(yīng)能 由普通用戶讀寫。：錯(cuò)誤89. C 語(yǔ)言是 UNIX 環(huán)境中唯一能使用的語(yǔ)言。：錯(cuò)誤90. MD5 passwords are enabled

2、by default on Linux in stallati ons.How many characters can a user s password bewhen using MD5 passwords : 25691. What program can be used to test the smb.c onf file forerrorsA. mountB. testC. samba -checkparmD. testparmE. smbfs2Explai n -p6:Expla nati on:the testparm program parses thesmb.c onf fil

3、e and reports any errors. If you make a typo this program islikely to find it.92. 用 ps x 命令會(huì)看到下面的輸出：請(qǐng)問(wèn) init 后面的 3 是什么 意思說(shuō)明 init 的狀態(tài)值，他可能是 0-6。PID TTY STAT TIME COMMANDx S 0:01 in it 393. What file contains the con figurati on for BINDA. /etc/b in d.c onfB. /etc/ named.c onfC. /etc/d ns.c onfD. /var/

4、n amed/b in d.c onfExplai n -p11:Expla natio n:BIND (the Berkely In ter net NameDaem on) which is a DNS server is con figured in /etc/ named.c onf.94. You have created a /home/projectx directory with the owner ofprojectx and a group of projectx. How can you set its permissi ons so thatall files crea

5、ted in this directory are owned by the projectx group : :chmod g+s /home/projectx95. You have created a /home/projectfoo directory. Howcan you cha nge its group own ership to the projectfoo group:3chgrp projectfoo /home/projectfoo96. Which optio ns to chmod allow read access to all buton ly allow wr

6、ite and execute access to the owner:chmod 744 file name97.What comma nd allows you to switch from using Gnome tousing KDE : Switchdesk98. If you want to allow X-Wi ndows programs from hostBto run on the display on hostA what would you n eed to doA. run xhost +hostB on hostA.B. run xhost +hostA on ho

7、stB.C. run xhost + on hostA.D. run xhost + on hostB.E. just set the DISPLAY environmentvariable and it willwork.Explai n -p40:Expla nati on:You want programs from hostB todisplay on hostA. So you must tell hostA to allow Xclie nts from hostB.Hence A is correct. The xhost + comma nd is too broad and allowsanyone to connect to your X-server.9