Unix面试题（英文 附答案）1-5

56. Which option can not be specified to a Client using the DHCP protocol? ：web proxy server
57. How can a user set up their own crontab entry?
A. vi ~/.crontab
B. cp /etc/crontab .
C. crontab –v
D. crontab –e
E. cron -edit
—————— Explain —————-
p2:Explanation: The crontab -e command is used to edit your own crontab.
58. What file do you edit to set the default runlevel? ： /etc/inittab
59. Linux 中 /usr/bin/bc 是：一种用于高精度计算的语言
60. You have a Linux machine that does not have X-Windows configured. What command can you use to find out what kind of graphics card it has? ：SuperProbe
61. You want to compile a new kernel. You have just run  B___ to check the depended files.：make dep
62. You have Linux installed on a machine and you use LILO as your boot loader. How do you boot into single user mode?
A: Wait for the machine to boot up then log in as root. Use the init 2 command.
B: At the LILO prompt use the linux single command.
C: At the LILO prompt use the linux 1 command.
D: At the LILO prompt use the linux command.
E: Linux only supports multi-user mode.
—————— Explain —————-
p16:Explanation: Either linux single or linux 1 will work at the LILO prompt. A will not work because single user mode is runlevel 1. D will only work if the default runlevel in /etc/inittab is set to 1 (which it is not normally.)
What command do you use to edit the default grace period for quotas? ：edquota –t
63. What command do you use to edit quotas?
A. quotaconfig
B. editquota
C. quotaconfig
D. edquota
E. quotaeditor
—————— Explain —————-
p52:Explanation: You use the edquota command to edit quotas. For example you can say edquota -u username to edit a specific user's quota. Or you can type edquota -g to set a quota for a group. You can say edquota -t to set up grace periods.
64. ／分区越大约好，因为/越大，Linux启动速度越快。：错误
65. 在使用edquota配置磁盘定额内容时，一般来说我们可以设置________内容。 ：软限制   硬限制 缓冲期间