國際認證RHCE紅帽認證考試試題

國際認證RHCE（紅帽認證）考試試題

　　中國加入WTO后，知識產權保護將逐步規范，使得更多企業轉向成本低廉的Linux操作平臺。下面是小編整理的關于國際認證RHCE(紅帽認證)考試試題，希望大家認真閱讀!

　　1. If you want to allow X-Windows programs from hostB to run on the display on hostA what would you need to do?

　　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.

　　You answered this question incorrectly

　　Explanation: You want programs from hostB to display on hostA. So you must tell hostA to allow Xclients from hostB. Hence A is correct. The xhost + command is too broad and allows anyone to connect to your X-server.

　　2. What command can you enter to find out which rpm contains the /etc/foo file?

　　A. rpm -qa |grep foo

　　B. rpm -ql /etc/foo

　　C. rpm -qlf /etc/foo

　　D. rpm -q -f /etc/foo

　　E. man foo

　　You answered this question incorrectly

　　Explanation: You can find out which rpm a file belongs to by using the rpm -q -f command. You must have the redhatrpmdb rpm installed though.

　　3. 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?

　　A. Xfind

　　B. SuperProbe

　　C. Xsetup

　　D. cat /proc/video

　　E. videocfg

　　You answered this question incorrectly

　　Explanation: The SuperProbe program is used to find information about your graphics card.

　　4. Which installation class will automatically delete all of your DOS partitions?

　　A. Custom

　　B. Workstation

　　C. Laptop

　　D. Server

　　E. All of the above

　　You answered this question incorrectly

　　Explanation: The Server installation class will automatically delete all DOS partitions. The workstation class will use availiable free space. The laptop class is very similar to the workstation class (but for laptops.)

　　5. How do you install an RPM?

　　A. rpm -evh packagename.rpm

　　B. rpm -ivh packagename.rpm

　　C. rpm -q packagename.rpm

　　D. rpm -qa *.rpm

　　E. rpm -ql *.rpm

　　You answered this question incorrectly

　　Explanation: A is wrong because the -e option is for uninstalling. B is right. C D and E are wrong because the -q option is for querrying.

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

　　A. mount

　　B. test

　　C. samba --checkparm

　　D. testparm

　　E. smbfs

　　You answered this question incorrectly

　　Explanation: the testparm program parses the smb.conf file and reports any errors. If you make a typo this program is likely to find it.

　　7. What command do you use to edit the default grace period for quotas?

　　A. quotaconfig -g

　　B. editquota -g

　　C. quotaconfig -t

　　D. edquota -t

　　E. quotaeditor --grace

　　You answered this question incorrectly

　　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.

　　8. What is the correct syntax to mount an MS DOS formatted floppy disk (do not assume that there is an entry in /etc/fstab)?

　　A. mount /dev/floppy /mnt/fd0

　　B. mount -t iso9660 /dev/fd0 /mnt/floppy

　　C. mount -t vfat /dev/fd0 /mnt/floppy

　　D. mount -t msdos /dev/floppy /mnt/floppy

　　E. mdir

　　You answered this question incorrectly

　　Explanation: A will only work if there is an entry in /etc/fstab. B is wrong because iso9660 is for CDROM’s. C is correct. D is wrong becuase the device should be /dev/fd0 rather than /dev/floppy.

　　9. You have created a /home/projectfoo directory. How can you change its group ownership to the projectfoo group?

　　A. chmod g+rwx projectfoo /home/projectfoo

　　B. chown projectfoo /home/projectfoo

　　C. chgrp projectfoo /home/projectfoo

　　D. newgrp projectfoo /home/projectfoo

　　E. chown projectfoo.users /home/projectfoo

　　You answered this question incorrectly

　　Explanation: The chgrp command sets the group ownership of a file or directory.

　　10. You have installed a DHCP server on your Linux machine and edited the configuration file. What else must you do before it will give out ip addresses?

　　A. reboot

　　B. Put fixed-addresses in the configuration for each client.

　　C. service dhcp begin

　　D. touch /var/lib/dhcp/dhcpd.leases

　　E. All of the above

　　You answered this question incorrectly

　　Explanation: You must touch the /var/lib/dhcp/dhcpd.leases file in order to get DHCP to begin giving out ip addresses.

　　11. How do you enable quotas on a partition in /etc/fstab?

　　A. Add the enforcequotas option.

　　B. You don’t. Quotas are turned on automatically when you install the quota rpm.

　　C. Add the quota option.

　　D. Add the usrquota and grpquota options.

　　E. You put a 1 in the last column.

　　You answered this question incorrectly

　　Explanation: To enable quotas on a partition you put the userquota and groupquota option in the options section for the partition in /etc/fstab.

　　12. You want to compile a new kernel. You have just run

　　A. make bzImage

　　B. make dep

　　C. make clean

　　D. make mrproper

　　E. make xconfig

　　You answered this question incorrectly

　　Explanation: The first thing you should do in the /usr/src/linux-2.4 directory is

　　make mrproper

　　Thencomma you should do the following: make config | make menuconfig | make xconfig

　　make dep

　　make clean

　　make bzImage

　　make modules (if modular kernel)

　　make modules_install (if modular kernel)

　　cp System.map /boot/System.map-2.4.17

　　cp arch/i386/boot/bzImage /boot/vmlinuz-2.4.17

　　cp .config /boot/config-2.4.17

　　mkinitrd /boot/initrd- # Depending on kernel configuration

　　Update LILO or GRUB

　　Reboot into new kernel

　　13. You are configuring a Linux DHCP server. You have it setup and working (as Linux clients are getting ip addresses from the DHCP server fine) but some Windows 95 clients are not getting ip addresses properly from your DHCP server. What do you need to do?

　　A. route add -host 255.255.255.255 dev eth0

　　B. route add -net 255.255.255.255 dev eth0

　　C. service dhcp restart

　　D. touch /var/state/leases

　　E. Windows 95 is not compatible with a Linux DHCP server.

　　You answered this question incorrectly

　　Explanation: Windows 95 insists that the DHCPOFFER messages be sent to 255.255.255.255. Linux will send them to the broadcast address instead. Adding a host entry for the host 255.255.255.255 will trick Linux into working with the Windows 95 clients.

　　14. You want to add a directory to all users paths. What file should you edit to do this?

　　A. /etc/sysconfig/profile

　　B. /etc/sysconfig/profile

　　C. /etc/bashrc

　　D. /etc/profile

　　E. /etc/env

　　You answered this question incorrectly

　　Explanation: The /etc/profile script is used for system-wide enviornment variables and startup files. You could also create a new file in /etc/profile.d/ that ends in .sh and set the enviornment variable in there. Keep in mind that not all users will necessarily use bash.

　　15. Which files are used to configure TCP Wrappers?

　　A. /etc/tcpwrapper.conf and /etc/hosts.conf

　　B. /etc/hosts.allow and /etc/hosts.deny

　　C. /etc/tcpwrapper.conf and /etc/xinetd.conf

　　D. /etc/access.conf and /etc/xinetd.conf

　　E. /etc/tcpwrapper and /etc/access.conf

　　You answered this question incorrectly

　　Explanation: TCP Wrappers are configured in the /etc/hosts.allow and /etc/hosts.deny files.

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