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Slide 1: RH302 - Red Hat Linux Certification (RHCE) FREE RH302 Practice Exam Test Questions Made Available By Pass-Guaranteed.com RH302 Practice Exam Questions For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 2: Introduction Under Red Hat Enterprise Linux 4, the certification exam consists of two parts conducted in a single day. The exam is performance-based, meaning that candidates must perform tasks on a live system, rather than answering questions about how one might perform those tasks. The two parts of the RHCE Exam consist of: • Section I: Troubleshooting and System Maintenance (2.5 hours) • Section II: Installation and Configuration (3 hours) In order to pass the Red Hat Certified Engineer exam under Red Hat Enterprise Linux 4, you must meet all of the following requirements: • a score of 80 or higher on Section I, consisting of five compulsory and five optional problems; • successful completion of the five Section I compulsory troubleshooting problems within one hour of that section's start time; • 70 percent or more on the RHCT-level skills in Section II; • 70 percent or more on the RHCE-level skills in Section II. These last two requirements enable RHCEs to demonstrate that they possess both RHCT level and RHCE-level skills, as well as enabling a person who only has RHCT level skills to earn RHCT if they pass the required competencies. Lab Setup on RHCE Exam: Remember the Key points of Lab Configuration: 1. Lab Configuration is on 192.168.0.0/24 for example.com domain and 192.168.1.0/24 for cracker.org domain. 2. DHCP Server is configured. 3. DNS Server is 192.168.0.254 4. One NIS Server is configured RHCE and server is 192.168.0.254 In Debug Section Five Questions are compulsory! You should finish these questions within an hour. Topic 1, Debug Section QUESTION: 1 How can you make this successfully resolve to server1.example.com where DNS Server is 192.168.0.254. Answer: 1. vi /etc/resolv.conf Write: nameserver 192.168.0.254 Explanation: If you have multiple name server (DNS), you can append another line. First Request goes to the First name server if not found then goes to second name server. For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 3: Then try to resolve the Server1.example.com by using host or dig command. Eg: host server1.example.com When we use the DNS client tool first it sends the request to the DNS server specified in /etc/resolv.conf as a name server. If that DNS is not found then it sends the request to the Root name Server. I will explain about the root Name server. QUESTION: 2 Quota is implemented in /data but not working properly. Find out the Problem and implement the quota to user1 to have a soft limit 60 i-nodes (files) and hard limit of 70 i-nodes (files). Answer: You should implement the quota on any directory that should be mounted with usrquota option for user quota and grpquota for group quota. 1. vi /etc/fstab /dev/hda11 /data ext3 defaults,usrquota 0 0 2. Either Reboot the System or remount the partition. Mount -o remount /dev/hda11 /data 3. touch /data/aquota.user 4. quotacheck -ufm /data 5. quotaon -u /data 6. edquota -u user1 /data and Specified the Soft limit and hard limit on opened file. To verify either quota is working or not: i. Login as user1 ii. Create the 61 files and see the warning of soft limit. iii use the quota command. QUESTION: 3 One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Successfully make the size of that Logical Volume 500M without losing any data. As well as size should be increased online. Answer: In RHEL 4 LVM (Logical Volume Manager) is Version 2. The new feature added is online extend. In previous version you should unmount the device. 1. Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1 2. Verify the Size on mounted directory: df -h or df -h mounted directory name 3. Use : lvextend -L+400M /dev/vg0/lv1 4. ext2online -d /dev/vg0/lv1 to bring extended size online. 5. Again Verify using lvdisplay and df -h command. Explanation: The Feature of LVM is dynamically resize the partition. If you resize data, it will not be lost. LVM Concepts Multiple Physical Disks belongs to the physical group. Using multiple disks belonging to physical group we can create on the Volume group. Under that Volume For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 4: Group we can create multiple Logical Volume and only these Logical Volumes we can use. As well as we can increase and decrease the size of Logical Volume by using lvextend, lvresize etc. QUESTION: 4 Create one partition having the size of 100MB and mount it on /data. Answer and Explanation: 1. Use fdisk /dev/hda To create new partition. 2. Type n For New partitions 3. It will ask for Logical or Primary Partitions. Press l for logical. 4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key. 5. Type the Size: +100M You can Specify either Last cylinder of Size here. 6. Press P to verify the partitions lists and remember the partitions name. 7. Press w to write on partitions table. 8. Either Reboot or use partprobe command. 9. Use mkfs -t ext3 /dev/hda? Or mke2fs -j /dev/hda? To create ext3 filesystem. 10. vi /etc/fstab Write: /dev/hda? /data ext3 defaults 0 0 11. Verify by mounting on current Sessions also: mount /dev/hda? /data QUESTION: 5 You are the new System Administrator and from now on you are going to handle the system and your main task is Network Monitoring, Backup and Restore. But you don't know the root password. Change the root password to Red Hat and login in default Runlevel. Answer and Explanation: When you Boot the System, it starts on default Runlevel specified in /etc/inittab: Id:?:initdefault: When the System Successfully boots, it will ask for username and password. But you don't know the root's password. 1. Restart the System. 2. You will get the boot loader GRUB screen. 3. Press a and type 1 or s for single mode ro root=LABEL=/ rhgb queit 1 4. System will boot on Single User mode. 5. Use passwd command to change. 6. Set redhat password. 7. Press ctrl+d QUESTION: 6 There are more than 400 Computers in your Office. You are appointed as a System Administrator. But you don't have Router. So, you are going to use your One Linux Server as a Router. How will you enable IP packets forward? Answer and Explanation: For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 5: 1. /proc is the virtual filesystem, we use /proc to modify the kernel value at running time. So For Current Session: echo "1" >/proc/sys/net/ipv4/ip_forward 2. /etc/sysctl.conf when System Reboot on next time, /etc/rc.d/rc.sysinit scripts reads the file /etc/sysctl.conf. So if you want to permanently set the IP forwarding enable, You should set: net.ipv4.ip_forward=1 Here 0 means disable, 1 means enable. QUESTION: 7 You Completely Install the Red Hat Enterprise Linux ES 4 on your System. While starting the system, it's giving an error to load X window System. How will you fix that problem and make it boot successfully to run X Window System. Answer and Explanation: While Problems occurred on booting System on Runlevel 5 (X Window). 1. /tmp is full or not 2. Quota is already reached 3. Video card or resolution or monitor is misconfigured. 4. xfs service is running or not. Do These: 1. df -h /tmp /tmp is full remove the unnecessary file 2. quota username if quota is already reached remove unnecessary file from home directory. 3. Boot the System in runlevel 3. you can pass the Kernel Argument from boot loader. 4. Use command: system-config-display It will display a dialog to configure the monitor, Video card, resolution etc. 5. Set the Default Runlevel 5 in /etc/inittab id:5:initdefault: 6. Reboot the System you will get the GUI login Screen. Note: at exam neither X window nor GNOME are installed at debug, you just have to do: /etc/inittab id:5:initdefault: and use the system-config-display Reboot the system QUESTION: 8 There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL 4 Installed System is going to use as a Router. All required configuration is already done on the Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server. How will you make a successful ping to 192.168.1.0/24 Network's Host? Answer: 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.? For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 6: NETMASK=255.255.255.0 GATEWAY=192.168.0.254 2. service network restart Explanation: Packets always go to default gateway if specified. First it search the gateway assigned on interface name, then network global configuration file. The System having IP Address 192.168.0.254, 192.168.1.254 is being used as Router so we should set the gateway to that system. QUESTION: 9 Make a swap partition having 100MB. Make Automatically Usable at System Boot Time. Answer and Explanation: 1. Use fdisk /dev/hda To create new partition. 2. Type n For New partition 3. It will ask for Logical or Primary Partitions. Press l for logical. 4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key. 5. Type the Size: +100M You can Specify either Last cylinder of Size here. 6. Press P to verify the partitions lists and remember the partitions name. Default System ID is 83 that means Linux Native. 7. Type t to change the System ID of partition. 8. Type Partition Number 9. Type 82 that means Linux Swap. 10. Press w to write on partitions table. 11. Either Reboot or use partprobe command. 12. mkswap /dev/hda? To create Swap File system on partition. 13. swapon /dev/hda? To enable the Swap space from partition. 14. free -m Verify Either Swap is enabled or not. 15. vi /etc/fstab /dev/hda? swap swap defaults 0 0 16. Reboot the System and verify that swap is automatically enabled or not. QUESTION 10 You are a System administrator. Using Log files make it very easy to identify problems. Now there are 50 servers running as Mail, Web, Proxy, DNS etc. You want to centralize the log from all servers onto a LOG Server. How will you configure the LOG Server? Answer and Explanation: By Default System Accept the Log only from the Local host. To accept the Log from 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 with -r 2. service syslog restart QUESTION: 11 For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 7: You are giving the debug RHCT exam. The examiner told you that the password of root is redhat. When you tried to login displays the error message and redisplayed the login screen. You changed the root password, again unable to login as a root. How will you make Successfully Login as a root. Answer and Explanation: When root unable to login into the system think: 1. Is password correct? 2. Is account expired? 3. Is terminal Blocked? Do these Steps: 1. Boot the System on Single user mode. 2. Change the password 3. Check the account expire date by using chage -l root command. If account is expired, set net expire date: chage -E "NEVER" root 4. Check the file /etc/securetty Which file blocked to root login from certain terminal. 5. If terminal is deleted or commented write new or uncomment. 6. Reboot the system and login as a root. QUESTION: 12 You are taking the RHCT Exam and in your Exam paper there is a question written, "Make it successfully ping to 192.168.0.254." Answer and Explanation: In the Network problem think to check: 1. IP Configuration: use ifconfig command to check if the IP is assigned to the interface or not? 2. Default Gateway is set or not? 3. Hostname is set or not? 4. Routing problem is there? 5. Device Driver Module is loaded or not? 6. Device is activated or not? Check In this way: 1. use ifconfig command and identify which IP is assigned or not. 2. cat /etc/sysconfig/network What is written here. Actually here are the parameters. NETWORKING=yes or no GATEWAY=x.x.x.x HOSTNAME=? NISDOMAIN=? - Correct the file 3. Use netconfig command - Either Select Automatically from DHCP or assign the static IP 4. Use service network restart or start command. Now try to ping it will work. QUESTION: 13 Set the Hostname station?.example.com where ? is your Host IP Address. Answer and Explanation: 1. hostname station?.example.com This will set the host name only for the current session. To set hostname permanently: For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 8: 2. vi /etc/sysconfig/network HOSTNAME=station?.example.com 3. service network restart QUESTION: 14 There is one partition named /dev/hda14 mounted on /data. The owner of /data is root user and root group. Permission is set to full for the owner user, read and execute to the group member and no permission to others. Now you should give the full permission to user user1 without changing pervious permission. Answer and Explanation: We know that every files/directories are owned by a certain user and certain group. Permissions are defined to owner user, owner group and other. -rwxr-x--- Full permission to owner user, read and write to owner group and no permission to others. According to question: We should give the full permission to user user1 without changing the previous permission. We have ACL (Access Control List), in ext3 file system we can give certain permissions to a certain user and a certain group without changing previous permissions. But that partition should mount using acl option. Follow the steps: 1. vi /etc/fstab /dev/hda14 /data ext3 defaults,acl 0 1 2. Either Reboot or use: mount -o remount /data 3. setfacl -m u:user1:rwx /data 4. Verify using: getfacl /data QUESTION: 15 You are giving the RHCE exam. Now you should boot your System properly. When you started your System, You got one message that. INIT Entering runlevel 9 INIT: no more processes left in this runlevel How will you boot your System properly? Answer and Explanation: QUESTION: 16 You are giving RHCE exam. You should boot the system in Run level 3. But when you started, after some time its showing some messages INIT: Entering Run level 6 Sending TERM Single System automatically switched to Run level 6 (reboot). How will fix the problem? Answer and Explanation: Default Run level and Run level specific Scripts are specified in /etc/inittab. 1. id:?:initdefault: Where default run level is specified. Either here run level 6 is specified. 2. l3:3:wait:/etc/rc.d/rc 6 It switches into the run level 6 si::sysinit:/etc/rc.d/rc.sysinit l0:0:wait:/etc/rc.d/rc 0 l1:1:wait:/etc/rc.d/rc 1 l2:2:wait:/etc/rc.d/rc 2 l3:3:wait:/etc/rc.d/rc 6 l4:4:wait:/etc/rc.d/rc 4 l5:5:wait:/etc/rc.d/rc 5 l6:6:wait:/etc/rc.d/rc 6 For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 9: Set the default run level 3. And pass the run level scripts 3. That means reads the scripts of /etc/rc.d/rc3.d/* QUESTION: 17 You are giving RHCE exam. Examiner gave you the Boot related problem and told to you that make successfully boot the System. When you started the system you got some error message: Kernel Panic - not syncing: Attempted to kill init! And no further boot process. What you will do to boot the system. Answer and Explanation: If you are getting the Kernel panic error, it means it is boot loader related problem. Red Hat Enterprise Linux uses the GRUB boot loader. You can pass the kernel parameter from the boot loader as well as you can correct the kernel parameter passing from boot loader from GRUB screen at boot time. GRUB boot loader configuration file is: /etc/grub.conf And Correct Configuration is: default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Red Hat Enterprise Linux ES (2.6.9-5.EL) root (hd0,0) kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet initrd /initrd-2.6.9-5.EL.img Probably miss-configured the boot loader so, giving this problem. You can pass the correct parameter from GRUB prompt by pressing e To edit the configuration, a to append the parameter, and c for command-line. If you know the boot partition you can enter following line: Press c on GRUB screen. Grub> root (hd0,0) grub> kernel /vmlinuz-2.6.9-5.EL ro root=LABEL=/ rhgb quiet grub> initrd /initrd-2.6.9-5.EL.img grub>boot QUESTION: 18 You are given the RHCE exam. The examiner gave you the Boot related problem and told you to successfully boot the System. When you started the system, System was automatically asking you for the root password. How will you fix that problem? Answer and Explanation: Boot loader points to Boot partition and root partition. Mount the root partition on read only mode. Automatically asking for root password at system boot time means, file system error. It comes generally from /etc/fstab Ie. Unknow partition, bad filesystem, bad mounting options, bad LABEL etc. Follow the steps 1. Give the Root password 2. fdisk -l Verify the Number of parations. 3. Identify the Root partition, e2label /dev/hda1, e2label /dev/hda2..... 4. Remount the root partation on rw mode: mount -o remount,defaults /dev/hda6 / For The Latest RH302 Practice Exam Questions: Visit: RH302
Slide 10: 5. vi /etc/fstab Correct all partitions, mount point, mount options, file system etc. 6. Press ctrl+d QUESTION: 19 You are working as an Administrator. There is a common data shared (/data) from 192.168.0.254 to all users in your local LAN. When a user's system starts, shared data should automatically mount on the user's machine. How will you configure this? Answer And Explanation: To automatically mount at boot time, we use the /etc/fstab file. Because /etc/rc.d/rc.sysinit file reads and mount all file system specified in /etc/fstab. To mount Network Sharing Files also use the /etc/fstab but filesystem is nfs. 1. vi /etc/fstab 192.168.0.254:/data /common nfs defaults 0 0 2. reboot the system. QUESTION: 20 One Logical Volume is created named as myvol under VO volume group and is mounted. The Initial Size of that Logical Volume is 124MB. Successfully make the size of Logical Volume 245MB without losing any data. The size of the Logical Volume from 240MB to 255MB will be acceptable. Answer and Explanation: 1. First check the size of the Logical Volume: lvdisplay /dev/vo/myvol 2. Increase the Size of the Logical Volume: lvextend -L+121M /dev/vo/myvol 3. Make Available the size on online: ext2online /dev/vo/myvol 4. Verify the Size of the Logical Volume: lvdisplay /dev/vo/myvol 5. Verify that the size comes in online or not: df -h We can extend the size of the logical Volume using the lvextend command. As well as to decrease the size of the Logical Volume, use the lvresize command. In LVM v2 we can extend the size of the Logical Volume without unmount as well as we can bring the size of the Logical Volume on using ext2online command. For The Complete Exam RH302 in PDF Format and Testing Engine Format with self assessment and score reporting features! Go To: http://www.Pass-Guaranteed.com/RH302.htm For The Latest RH302 Practice Exam Questions: Visit: RH302
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