最新的RedHat Redhat Certified Technician on Redhat Enterprise Linux 5 (Labs) - RH202免費考試真題

A. rpm -ivh ftp://server1.example.com/pub/kernel-hugemem-*
vi /etc/grub.conf Set the default to new kernel default=0 Example of /etc/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Red Hat Enterprise Linux ES (2.6.9-5.ELhugemem)
kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/1 rhgb quiet initrd /initrd-2.6.9-5.EL.img
rpm command is used to install, update and remove the rpm package. -ivh option is install, verbose, and display the hash mark.

B. rpm -ivh ftp://server1.example.com/pub/kernel-hugemem-*
vi /etc/grub.conf Set the default to new kernel default=0 Example of /etc/grub.conf default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Red Hat Enterprise Linux ES (2.6.9-5.ELhugemem)
root (hd0,0) kernel /vmlinuz-2.6.9-5.ELhugemem ro root=LABEL=/1 rhgb quiet initrd /initrd-2.6.9-5.ELhugemem.img
title Red Hat Enterprise Linux ES (2.6.9-5.EL) root (hd0,0) kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/1 rhgb quiet initrd /initrd-2.6.9-5.EL.img
rpm command is used to install, update and remove the rpm package. -ivh option is install, verbose, and display the hash mark.

A. Insert the CD on CD-ROM and start the system.
In Boot: Prompt type linux askmethod
It will display the language, keyboard selection.
It will ask you for the installation method.
Select the NFS Image from the list
It will ask the IP Address, Net mask, Gateway and Name Server. Select Use Dynamic IP Configuration: because DHCP Server will be configured in your exam lab.
It will ask for the NFS Server Name and Redhat Enterprise Linux Directory. Specify the NFS Server: 172.24.252.252 Directory: /var/ftp/pub
Then select the MBR Options, time zone and go upto package selections. It is another Most Important Time of installation. Due to the time limit, you should care about the installation packages. At Exam time you these packages are enough. X-Window System GNOME Desktop (these two packages are generally not required) Administration Tools. System Tools Windows File Server FTP Servers Mail Servers Web Servers Network Servers Editors Text Based Internet Server Configuration Tools Printing Supports When installation will complete, your system will reboot. Jump for another QUESTION.

B. Insert the CD on CD-ROM and start the system.
In Boot: Prompt type linux askmethod
It will display the language, keyboard selection.
It will ask you for the installation method.
Select the NFS Image from the list
It will ask the IP Address, Net mask, Gateway and Name Server. Select Use Dynamic IP Configuration: because DHCP Server will be configured in your exam lab.
It will ask for the NFS Server Name and Redhat Enterprise Linux Directory. Specify the NFS Server: 172.24.254.254 Directory: /var/ftp/pub
After Connecting to the NFS Server Installation start in GUI . Go up to the partition screen by selecting the different Options.
Create the partition According to the QUESTION because Size and what-what partition should you create at installation time is specified in your QUESTION
Create the two RAID partitions having equal size of remaining all free space.
Click on RAID button
Type mount point /document
Select RAID Level 0
Click on ok
Then select the MBR Options, time zone and go upto package selections. It is another Most Important Time of installation. Due to the time limit, you should care about the installation packages. At Exam time you these packages are enough. X-Window System GNOME Desktop (these two packages are generally not required) Administration Tools. System Tools Windows File Server FTP Servers Mail Servers Web Servers Network Servers Editors Text Based Internet Server Configuration Tools Printing Supports When installation will complete, your system will reboot. Jump for another QUESTION.

A. According to QUESTION, log server is already configured. We have to configure the mail, web and dns server for log redirection. In mail, web and dns server:
vi /etc/syslog.conf mail.* @logserveraddress
service syslog restart .

B. According to QUESTION, log server is already configured. We have to configure the mail, web and dns server for log redirection. In mail, web and dns server:
vi /etc/syslog.conf mail.* @logserveraddress
service syslog restart
mail is the facility and * means the priority. It sends logs of mail services into log server.

A. 1. vi /etc/sysconfig/network
GATEWAY=192.168.0.254 OR vi /etc/sysconf/network-scripts/ifcfg-eth0
DEVICE=eth0 BOOTPROTO=static ONBOOT=yes IPADDR=192.168.0.? NETMASK=255.255.255.0 GATEWAY=192.168.0.254
2. service network restart .
To get the hosts on 192.168.1.0/24 should go through 192.168.0.254.

B. 1. vi /etc/sysconfig/network
GATEWAY=192.168.0.254 OR vi /etc/sysconf/network-scripts/ifcfg-eth0
DEVICE=eth0 BOOTPROTO=static ONBOOT=yes IPADDR=192.168.0.? NETMASK=255.255.255.0 GATEWAY=192.168.0.254
2. service network restart Explanation, Gateway defines the way to exit the packets. According to QUESTION System working as a router for two networks have IP Address 192.168.0.254 and
192.168.1.254. To get the hosts on 192.168.1.0/24 should go through 192.168.0.254.

A. By Default system accept the logs only generated from local host. To accept the Logfrom other host configure:
1. vi /etc/sysconfig/syslog
SYSLOGD_OPTIONS="-m 0 -r"
Where -m 0 disables 'MARK' messages. -r enables logging from remote machines -x disables DNS lookups on messages recieved with -r
2. service syslog restart

B. By Default system accept the logs only generated from local host. To accept the Logfrom other host configure:
1. vi /etc/sysconfig/syslog
SYSLOGD_OPTIONS="-m 0 -r"
Where -m 0 disables 'MARK' messages. -r enables logging from remote machines -x disables DNS lookups on messages received.

A. Very Tricky QUESTION from redhat. Actually QUESTION is giving scenario to you to implement quota to neo user. You should apply the quota to neo user on /home that neo user shouldn't occupied space more than 70K.
vi /etc/fstab LABEL=/home /home ext3 defaults,usrquota 0 0 To enable the quota on filesystem you should mount the filesystem with usrquota for user quota and grpquota for group quota.
touch /home/aquota.user-> Creating blank quota database file.
mount -o remount /home-> Remounting the /home with updated mount options. You can verify that /home is mounted with usrquota options or not using mount command.
quotacheck -u /home-> Initialization the quota on /home
5. edquota -u neo /home-> Quota Policy editor
See the snapshot
1 Disk quotas for user neo (uid 500):
2 Filesystem blocks soft hard inodes soft hard
4 / dev/mapper/vo-myvol 2 30 70 1 0 0
Can you set the hard limit 70 and soft limit as you think like 30.

B. Very Tricky QUESTION from redhat. Actually QUESTION is giving scenario to you to implement quota to neo user. You should apply the quota to neo user on /home that neo user shouldn't occupied space more than 70K.
vi /etc/fstab LABEL=/home /home ext3 defaults,usrquota 0 0 To enable the quota on filesystem you should mount the filesystem with usrquota for user quota and grpquota for group quota.
touch /home/aquota.user-> Creating blank quota database file.
mount -o remount /home->
quotacheck -u /home-> Initialization the quota on /home
5. edquota -u neo /home-> Quota Policy editor
See the snapshot
1 Disk quotas for user neo (uid 500):
2 Filesystem blocks soft hard inodes soft hard
4 / dev/mapper/vo-myvol 2 40 80 2 0 0
Can you set the hard limit 70 and soft limit as you think like 30.

A. chmod g+s /storage
Verify using: ls -ld /storage Permission should be like: drwxrws--- 2 root sysusers 4096 Mar 16 19:08 /storage If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory.

B. chmod g+s /storage
Verify using: ls -ld /storage Permission should be like: drwxrws--- 2 root sysusers 4096 Mar 16 18:08 /storage If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory

A. Quotas are used to limit a user's or a group of users' ability to consume disk space. This prevents a small group of users from monopolizing disk capacity and potentially interfering with other users or the entire system. Disk quotas are commonly used by ISPs, by Web hosting companies, on FTP sites, and on corporate file servers to ensure continued availability of their systems. Without quotas, one or more users can upload files on an FTP server to the point of filling a filesystem. Once the affected partition is full, other users are effectively denied upload access to the disk. This is also a reason to mount different filesystem directories on different partitions. For example, if you only had partitions for your root (/) directory and swap space, someone uploading to your computer could fill up all of the space in your root directory (/). Without at least a little free space in the root directory (/), your system could become unstable or even crash. You have two ways to set quotas for users. You can limit users by inodes or by kilobytesized disk blocks. Every Linux file requires an inode. Therefore, you can limit users by the number of files or by absolute space. You can set up different quotas for different filesystems. For example, you can set different quotas for users on the /home and /tmp directories if they are mounted on their own partitions. Limits on disk blocks restrict the amount of disk space available to a user on your system. Older versions of Red Hat Linux included LinuxConf, which included a graphical tool to configure quotas. As of this writing, Red Hat no longer has a graphical quota configuration tool. Today, you can configure quotas on RHEL only through the command line interface.
vi /etc/fstab
/dev/hda11 /data ext3 defaults,usrquota 1 2
Either Reboot the System or remount the partition.
Mount -o remount /dev/hda11 /data
touch /data/aquota.user
quotacheck -ufm /data
quotaon -u /data
edquota -u user1 /data
and Specified the Soft limit and hard limit on opened file.
To verify either quota is working or not: Soft limit specify the limit to generate warnings to users and hard limit can't cross by the user. Use the quota command or repquota command to monitor the quota information.

B. Quotas are used to limit a user's or a group of users' ability to consume disk space. This prevents a small group of users from monopolizing disk capacity and potentially interfering with other users or the entire system. Disk quotas are commonly used by ISPs, by Web hosting companies, on FTP sites, and on corporate file servers to ensure continued availability of their systems. Without quotas, one or more users can upload files on an FTP server to the point of filling a filesystem. Once the affected partition is full, other users are effectively denied upload access to the disk. This is also a reason to mount different filesystem directories on different partitions. For example, if you only had partitions for your root (/) directory and swap space, someone uploading to your computer could fill up all of the space in your root directory (/).Older versions of Red Hat Linux included LinuxConf, which included a graphical tool to configure quotas. As of this writing, Red Hat no longer has a graphical quota configuration tool. Today, you can configure quotas on RHEL only through the command line interface.
vi /etc/fstab
/dev/hda11 /data ext3 defaults,usrquota 1 4
Either Reboot the System or remount the partition.
Mount -o remount /dev/hda11 /data
touch /data/aquota.user
quotacheck -ufm /data
quotaon -u /data
edquota -u user1 /data
and Specified the Soft limit and hard limit on opened file.
To verify either quota is working or not: Soft limit specify the limit to generate warnings to users and hard limit can't cross by the user. Use the quota command or repquota command to monitor the quota information.

A. usermod -G sysusers jeff
usermod -G sysuser marion
Verify by reading /etc/group file Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary. Primary group can be only one but user can belongs to more than one group as secondary. usermod -g groupname username To change the primary group of the user usermod -G groupname username To make user belongs to secondary group.

B. usermod -G sysusers jeff
usermod -G sysuser marion
Verify by reading /etc/group file Using usermod command we can make user belongs to different group. There are two types of group one primary and another is secondary.
usermod -g groupname username To change the primary group of the user usermod -G groupname username To make user belongs to secondary group.

A. 1. groupadd sysadmin groupadd command is used to create the group.

B. 1. groupadd sysadmin groupadd command is used to create the group and all group information is stored in /etc/group file.

A. 1. groupadd sysuser groupadd command is used to create the group and all group information is stored in /etc/group file.

B. 1. groupadd sysuser groupadd command is used to create the group and all group information is stored on /etc/group file.

A. chmod g+s /archive
Verify using: ls -ld /archive Permission should be like: drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory

B. chmod g+s /archive
Verify using: ls -ld /archive Permission should be like: drwxrws--- 4 root sysuser 4090 Mar 16 18:08 /archive If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory.

A. 1. useradd eric
Not Very tricky QUESTION given to you that this user should not belongs to sysadmin group.

B. 1. useradd eric
Very tricky QUESTION given to you that this user should not belongs to sysadmin group.

A. While you load the X Window System, you will get the problem. To troubleshoot follow the following steps:
Check the /tmp is full ?
Check your quota, hard limit is already crossed ?
Check xfs service is running ?
Configure the Video card, Resolution, monitor type using: system-configdisplay (Most Probably in Redhat exam)
Edit the /etc/inittab to set default runlevel 5. id:5:initdefault:

B. While you load the X Window System, you will get the problem. To troubleshoot follow the following steps:
Check the /tmp is full ?
Check your quota, hard limit is already crossed ?
Check xfs service is running ?
Configure the Video card, Resolution, monitor type using: system-configdisplay (Most Probably in Redhat exam)
Edit the /etc/inittab to set default runlevel 4. id:6:initdefault:

A. Steps of Creating LVM:
pvcreate /dev/hda8 /dev/hda9 /dev/hda10
pvdisplay command is used to display the information of physical volume.
vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10
Physical Disk1 Logical Volume 1
Physical Disk2
Physical Disk3 Physical Volume Volume Group Logical Volume 2
Logical Volume 3
->vgdisplay command is used to display the information of Volume Group.
lvcreate -L 250M -n testvolume1 test0
->lvdisplay command is used to display the information of Logical Volume.
lvcreate -L 250M -n testvolume2 test0
mkfs -t ext3 /dev/test0/testvolume1
mkfs -t ext3 /dev/test0/testvolume2
mkdir /lvtest1
mkdir /lvtest2
mount /dev/test0/testvolume1 /lvtest1
mount /dev/test0/testvolume2 /lvtest2
vi /etc/fstab /dev/test0/testvolume2 /lvtest2 ext3 defaults 0 0 /dev/test0/testvolume1 /lvtest1 ext3 defaults 0 0 To create the LVM( Logical Volume Manager) we required the disks having '8e' Linux LVM type. First we should create the physical Volume, then we can create the Volume group from disks belongs to physical Volume. lvcreate command is used to create the logical volume on volume group. We can specify the size of logical volume with -L option and name with -n option.

B. Steps of Creating LVM:
pvcreate /dev/hda8 /dev/hda9 /dev/hda10
pvdisplay command is used to display the information of physical volume.
vgceate test0 /dev/hda8 /dev/hda9 /dev/hda10
Physical Disk1 Logical Volume 1
Physical Disk2
Physical Disk3 Physical Volume Volume Group Logical Volume 2
Logical Volume 3
->vgdisplay command is used to display the information of Volume Group.
lvcreate -L 250M -n testvolume1 test0
->lvdisplay command is used to display the information of Logical Volume.
lvcreate -L 250M -n testvolume2 test0
mkfs -t ext3 /dev/test0/testvolume1
mount /dev/test0/testvolume2 /lvtest2
vi /etc/fstab /dev/test0/testvolume2 /lvtest2 ext3 defaults 0 0 /dev/test0/testvolume1 /lvtest1 ext3 defaults 0 0 To create the LVM( Logical Volume Manager) we required the disks having '8e' Linux LVM type. First we should create the physical Volume, then we can create the Volume group from disks belongs to physical Volume. lvcreate command is used to create the logical volume on volume group. We can specify the size of logical volume with -L option and name with -n option.