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Red Hat Certification Exams Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM CERTIFICATION EXAMS INTERVIEW QUESTIONS RED HAT CERTIFICATION EXAMS INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Red Hat Certification Exams Interview Questions & Answers - Learning Mode

A Red Hat? Certified Architect (RHCA?) is a Red Hat Certified Engineer (RHCE?) or Red Hat Certified JBoss Developer (RHCJD) who has additionally attained Red Hat's highest level of certification. Earning RHCA is flexible. You can choose the set of eligible certifications beyond RHCE or RHCJD that best suit your professional needs, or you can follow one of our recommended concentrations below:- Datacenter, Cloud, Application Platform, Application Development, DevOps etc.

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Red Hat Certification Exams Interview Questions & Answers - Learning Mode
Try Red Hat Certification Exams Interview Questions & Answers - Exam Mode
Question: 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 Runlevel.


Answer: When you Boot the System, it starts on default Runlevel specified in /etc/inittab:

Id:?:initdefault:

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.
CoolInterview.com
Question: What option to dhcpd is used to specify a certain location for its configuration file?
A. -cf
B. -c
C. -d
D. -f


Answer: A. -cf Source: CoolInterview.com
Question: What is the main configuration file for XFree86 version 4?
A. /etc/X11/XF86Config
B. /etc/X11/XF86Config-4
C. /usr/X11R6/bin/XFree86
D. XF86_SVGA


Answer: B. /etc/X11/XF86Config-4 Source: CoolInterview.com
Question: 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: 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.

Source: CoolInterview.com
Question: Where do the binaries for XFree86 reside in?
A. /usr/X11R6
B. /etc
C. /etc/X11
D. /X11R6


Answer: A. /usr/X11R6 Source: CoolInterview.com
Question: Create one partitions having size 100MB and mount it on /data.

Answer: 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.CoolInterview.com
Question: neo user tried by:
dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70
files created successfully. Again neo tried to create file having 70K using following
command:
dd if=/dev/zero of=/home/neo/somefile bs=1024 count=70
But he is unable to create the file. Make the user can create the file less then 70K.


Answer: 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.
1. 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.
2. touch /home/aquota.user ->Creating blank quota database file.
3. mo Source: CoolInterview.com
Question: Quota is implemented on /data but not working properly. Find out the
Problem and implement the quota to user1 to have a soft limit 60 inodes
(files) and hard limit of 70 inodes (files).


Answer: 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 Source: CoolInterview.com
Question: 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: Answer:
You should to 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.
Source: CoolInterview.com
Question: Which of the following is a journaling filesystem?
A. ext2
B. vfat
C. minix
D. ext3


Answer: D. ext3 Source: CoolInterview.com
Question: What DHCP server option is used to specify the DNS server to clients?
A. domain-name-servers
B. dns
C. domain-name
D. routers


Answer: A. domain-name-servers Source: CoolInterview.com
Question: The first ethernet card on a system is:
A. eth0
B. etho0
C. eth1
D. hme0


Answer: A. eth0 Source: CoolInterview.com
Question: You can find all of the services managed by xinetd by looking at which of the following file or directory?
A. /etc/xinetd.d
B. /etc/inetd.conf
C. /etc/rc.d/init.d
D. /etc/xinetd.conf


Answer: A. /etc/xinetd.d Source: CoolInterview.com
Question: Both RAID level 0 and Linear RAID provide capacity equivalent to the amount of storage you have. In other
words, there is no space reserved for parity or error checking. What, then, is the difference between RAID
level 0 and Linear RAID?
A. When using Linear RAID, data is not striped across drives.
B. When using Linear RAID, data is striped across drives.
C. RAID 0 provides some amount of error checking.
D. Linear RAID provides some amount of redundancy.


Answer: A. When using Linear RAID, data is not striped across drives. Source: CoolInterview.com
Question: 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.

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: Source: CoolInterview.com
Question: In order to set the time zone to 'US/Eastern' via Kickstart, what must be in the Kickstart configuration file?
A. tz US/Eastern
B. timezone US/Eastern
C. It is not possible to set time zone
D. timeconfig US/Eastern


Answer: B. timezone US/Eastern Source: CoolInterview.com
Question: 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: 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: resize2fs /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
Source: CoolInterview.com
Question: You are giving RHCT Exam and in your Exam paper there is a question written,
make successfully ping to 192.168.0.254.


Answer: In Network problem thinks 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?
Source: CoolInterview.com
Question: 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: We can control the services for current session and for next boot time also. For current
Session, we use service servicename start or restart or stop or status. For automatically on
next reboot time:
1. chkconfig servicename 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.
Source: CoolInterview.com
Question: One Package named zsh is dump on ftp://server1.example.com under /pub/updates
directory and your FTP server is 192.168.0.254. Install the package zsh.


Answer: 1. rpm -ivh ftp://server1/example.com/pub/updates/zsh-*
or
1. Login to ftp server : ftp ftp://server1.example.com using anonymous user.
2. Change the directory: cd pub and cd updates
3. Download the package: mget zsh-*
4. Quit from the ftp prompt : bye
5. Install the package
6. rpm -ivh zsh-*
7. Verify either package is installed or not : rpm -q zsh
Source: CoolInterview.com

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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
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