Unix面试题(英文附答案)5

1、1Unix面试题（英文附答案）1问题：Unix 面试题（英文 附答案）1-7 回答：86. fork 系统调用能：把当前进程复制一份，产生一个新进程87. Which files are used to con figureTCP Wrappers/etc/hosts.allow and /etc/hosts.de ny88. /boot 目录用来存放 Linux 启动时所需要的一些数据和文 件，如果该目录被破坏，系统将不能够启动，缺省情况下该目录应能 由普通用户读写。：错误89. C 语言是 UNIX 环境中唯一能使用的语言。：错误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 命令会看到下面的输出：请问 init 后面的 3 是什么 意思说明 init 的状态值，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