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Question 1. Make Successfully Resolve to server1.example.com where DNS Server is 192.168.0.254. Answer: 1. vi /etc/resolv.conf Write: name server 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. 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. Question 2. Quota is implemented in /data but not working properly. Find out the Problem and implements the quota to user1 to have a soft limit 60 inodes (files) and hard limit of 70 inodes (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. quota check -ufm /data 5. quota on -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. Make successfully 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. Explanation: 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. Explain: The Features of LVM is dynamically resize the partition. If you resize data will not lost. LVM Concepts Multiple Physical Disks belongs to physical group. Using multiple disks belongs to physical group we can create on Volume group. Under that Volume Group we can create multiple Logical Volume and only these Logical Volume we can use. As well as we can increase and decrease the size of Logical Volume by using lvextend, lvresize etc. More details in Configuration Section. Question 4. Create one partitions having size 100MB and mount it on /data. Answer with 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 part probe command. 9. Use mkfs -t ext3 /dev/hda? Or mke2fs -j /dev/hda? To create ext3 file system. 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 new System Administrator and from now 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 redhat and login in default Run level. Answer with Explanation: When you Boot the System, it starts on default Run level specified in /etc/inittab: Id:? init default: When System Successfully boot, 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 then 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 with Explanation: 1. /proc is the virtual file system, 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 Redhat Enterprise Linux ES 4 on your System. While start the system, it's giving error to load X window System. How will you fix that problem and make boot successfully run X Window System. Answer with Explanation: Thinks While Problems occurred on booting System on Run level 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 run level 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 Run level 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 Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server. How will make successfully 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.? NETMASK=255.255.255.0 GATEWAY=192.168.0.254 2. service network restart Explanation: Always packets 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 with 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 are very easy to identify the problem. Now there are 50 servers running as Mail, Web, Proxy, DNS etc. You want to centralize the log from all servers into one LOG Server. How will you configure the LOG Server? Answer with 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. 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 with 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 change -l root command. If account is expired, set net expire date: change -E "NEVER" root 4. Check the file /etc/security 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 giving RHCT Exam and in your Exam paper there is a question written, make successfully ping to 192.168.0.254. Answer with Explanation: In Network problem think to check: 1. IP Configuration: use ifconfig command either IP is assigned to 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, What is written here. Actually here are these 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 with Explanation: 1. hostname station?.example.com This will set the host name only for current session. To set hostname permanently. 2. vi /etc/sysconfig/network HOSTNAME=station?.example.com 3. service network restart Question 14. The System you are using is for NFS (Network File Services). Some important data are shared from your system. Make automatically start the nfs and portmap services at boot time. Answer with Explanation: We can control the services for current session and for next reboot time. For current Session, we use service servicename start or restart or stop or status. For automatically at next reboot time: 1. chkconfig service name on or off eg: chkconfig nfs on chkconfig portmap on or ntsysv Select the nfs and portmap services. 2. Reboot the system and identify whether services are running or not. Question 15. There is one partition named /dev/hda14 mounted on /data. The owner of /data is root user and root group. And Permission is full to owner user, read and execute to group member and no permission to others. Now you should give the full permission to user user1 without changing pervious permission. Answer with Explanation: We know that every files/directories are owned by certain user and certain group. And Permissions are defines 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 permission to certain user and certain group without changing previous permission. 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 16. One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical Volume is 124MB. Make successfully that the size of Logical Volume 245MB without losing any data. The size of logical volume 240MB to 255MB will be acceptable. Answer with Explanation: 1. First check the size of Logical Volume: lvdisplay /dev/vo/myvol 2. Increase the Size of Logical Volume: lvextend -L+121M /dev/vo/myvol 3. Make Available the size on online: ext2online /dev/vo/myvol 4. Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol 5. Verify that the size comes in online or not: df -h We can extend the size of logical Volume using the lvextend command. As well as to decrease the size of Logical Volume, use the lvresize command. In LVM v2 we can extend the size of Logical Volume without unmount as well as we can bring the size of Logical Volume on online using ext2online command.
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Question 1.
A Citrix Access Gateway administrator at ITCertKeys.com creating logon points wants to enable pass-through authentication.
Which two authorization methods can be configured for pass-through authentication when configuring logon points? (Choose two.)
A. LDAP
B. RSA Security
C. Secure Computing
D. Active Directory
Answer: A, D
Question 2.
A Citrix Access Gateway administrator at ITCertKeys.com must take which two steps when creating a typical filter? (Choose two.)
A. Select endpoint analysis scan output in the filter.
B. Choose at least one condition to be included in the filter.
C. Provide a unique name for the filter.
D. Construct a logical expression for the filter.
E. Select an authentication profile for the filter.
Answer: B, C
Question 3.
Which two statements are true regarding licensing for a deployment that contains multiple Access Gateway appliances? (Choose two.)
A. One server is configured as the license server.
B. The primary gateway appliance serves as the license server.
C. The license server must be installed in the DMZ on a separate server.
D. Each gateway appliance must contain its own license.
Answer: A, B
Question 4.
Which type of filter should an administrator create if a filter that specifies a particular NOT logic condition must exist in order for access to be granted?
A. Exclusion filter
B. Negative filter
C. Typical filter
D. Custom filter
Answer: D
Question 5.
What are three settings that an administrator can configure per logon point for published applications? (Choose three.)
A. Window size
B. Clipboard mapping
C. Window color
D. Drive mapping
E. Printer mapping
F. Sound
Answer: A, C, F
Question 6.
From which node in the Access Management Console can an administrator configure event logging?
A. Server Farm node
B. Resource node
C. Gateway Appliances node
D. Servers node
Answer: A
Question 7.
A Citrix Access Gateway administrator at ITCertKeys.com wants to perform automatic drive mapping for clients who have a specific antivirus software installed after those clients log onto the network.
How can the administrator implement this through a connection policy?
A. By configuring "Run DRIVEMAP.EXE"
B. By enabling "Launch scripts" on the server
C. By configuring "Execute logon scripts"
D. By enabling "Connect drive"
Answer: C
Question 8.
Which two authentication methods can be implemented to provide Advanced Authentication? (Choose two.)
A. Smart Cards
B. LDAP
C. Secure Computing SafeWord PremierAccess
D. RSA Security SecurID
Answer: C, D
Question 9.
Which setting must be configured in a policy to grant privileges to an access server farm?
A. Allow Logon
B. Show Logon Resource
C. Show Local Farm
D. Permit Access Control
Answer: A
Question 10.
Which statement is true regarding Workspace Control?
A. Workspace Control is not supported if more than two Presentation Server farms are assigned
to a single logon point.
B. Users always have options to disconnect or keep launched applications when they are logged
off.
C. Only disconnected sessions can be reconnected.
D. Workspace Control can only be set per logon point.
Answer: D
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