五十几道RHCE参考笔试试题（三）

　　Choose the best answer:

　　A. run xhost +hostB on hostA.

　　B. run xhost +hostA on hostB.

　　C. run xhost + on hostA.

　　D. run xhost + on hostB.

　　E. just set the DISPLAY environment variable and it will work.

　　22. What port does the Squid proxy server use by default?

　　Choose the best answer:

　　A. 80

　　B. 1080

　　C. 3028

　　D. 3128

　　E. 8080

　　23. What program can be used to test the smb.conf file for errors?

　　Choose the best answer:

　　A. mount

　　B. test

　　C. samba --checkparm

　　D. testparm

　　E. smbfs

　　24. What file contains the configuration for the Network Time Protocol server?

　　Choose the best answer:

　　A. /etc/ntp.conf

　　B. /etc/xntp.conf

　　C. /etc/NTP

　　D. /etc/time.conf

　　E. /etc/timeserver.conf

　　25. You have created a /home/projectx directory with the owner of projectx and a group of projectx. How can you set its permissions so that all files created in this directory are owned by the projectx group?

　　Choose the best answer:

　　A. chown projectx.projextx /home/projectx

　　B. chgrp projectx /home/projectx

　　C. chmod 755 /home/projectx

　　D. chmod g-s /home/projectx

　　E. chmod g+s /home/projectx

　　26. What program allows you to acess SMB shares using ftp-like commmands?

　　Choose the best answer:

　　A. mount

　　B. smbftp

　　C. smbclient

　　D. smbmount

　　E. samba

　　27. What does the -N option do for the dhcpcd program?

　　Choose the best answer:

　　A. Sets the hostname of the machine to the name provided by DHCP.

　　B. If the dhcpcd server is already running then it sends it an ALRM signal to get it to renew its lease.

　　C. Passes the machine name to DHCP as part of the DHCP request.

　　D. Only tries to get a new ip address if the current one is older than a certain number of hours.

　　E. None of the above

　　28. Where are kernel modules stored assuming you are using kernel version 2.4.16-9?

　　Choose the best answer:

　　A. /lib/redhat/modules/2.4.16-9

　　B. /lib

　　C. /lib/modules/2.4.16-9

　　D. /lib/modules

　　E. /usr/lib/modules/

　　29. What does the following cron entry do?

　　10 5 * * * /bin/foo

　　Choose the best answer:

　　A. runs /bin/foo every 10 minutes 5 days a week

　　B. runs /bin/foo at 10:05 AM every day

　　C. runs /bin/foo on the 10th of May every year

　　D. runs /bin/foo at 5:10 AM every day

　　E. none of the above

　　30. What directory contains the DNS zone files?

　　Choose the best answer:

　　A. /etc/bind/

　　B. /etc/named/

　　C. /etc/bind.d

　　D. /var/named

　　E. /var/bind.d