Interview Questions.

Question 1. What Is An Alternative To The “pinnacle” Command On Solaris?

Answer :

# prstat –a

Question 2. Is It Possible To Create Swap In New Hard Disk Without Format ?

Answer :

“ No “ with out label the force, you may’t do some thing

Siebel - CRM Interview Questions
Question three. Is It Possible To Edit The Crontab Using Vi, It Is Not Recommended But It Is Possible By Editing?

Answer :

# vi /var/spool/cron/crontabs/root
The command to edit the crontab is #crontab -e
Question four. What Is Mean By Paging & Server Average Time?

Answer :

If a disk indicates continuously excessive reads/writes at the side of , the share busy (%b) of the disks is greater than 5 percent, and the common provider time  (svc_t) is more than 30 milliseconds, then  one of the following action wishes to be taken

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Question 5. Cannot Open ‘/and so forth/path_to_inst'” ?

Answer :

System cannot locate the /and many others/path_to_install report. It is probably lacking or corrupted and needs to be rebuild.

To rebuild this document  boot the machine with  -ar option :

good enough>boot -ar

Press input to pick out default values for the questions requested throughout booting and select sure to rebuild /etc/path_to_install

The /etc/path_to_inst to your gadget does no longer exist or is empty. Do you need to rebuild this record [n]? Y

system will retain booting after rebuilding the report.

UNIX/XENIX Interview Questions
Question 6. How Will You Comment Error Line In /etc/gadget File ?

Answer :

# Vi /and so on/system

(To remark the mistake line in /and so forth/device files, we have to use *)

Question 7. What Is Difference Between Incremental Backup And Differential Backup?

Answer :

Incremental: Only those documents might be blanketed which have been changed since the closing backup.

Differential: Only those files may be covered which have been modified because the ultimate Full backup.

Unix/Linux Tutorial Siebel System Admin Interview Questions
Question 8. How Many Ufsdump Level?

Answer :

zero-nine degree

zero = Full Backup

1-nine = Incremental backup of document,That have modified since the final lower level backup.

Question 9. What Is Different Between Crontab And At Command?

Answer :

Crontab: job may be scheduled

At: Job can be a run once only

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Question 10. Difference Between Ufs And Tar Command?

Answer :

ufsdump: 

Used for whole record system backup.
It copies each thing from normal documents in a report device to big character and block tool files.
It can paintings on established or unmounted record structures.
Tar:

Used for unmarried or more than one documents backup.
Can’t backup special man or woman & block device files.
Works most effective on set up file system.
Question eleven. Syntex To Execute A Ufsdump ?

Answer :

# ufsdump 0uf /dev/rmt/1

Salesforce Developer Interview Questions
Question 12. To Check The Status Of The Media Inserted On The Tape Drive ?

Answer :

# mt /dev/rmt/0 reputation

Siebel - CRM Interview Questions
Question 13 (cd /mnt/haz ufsrestore xf -)

Question 14. What Is The Physical Device To Check The 2 Nodes Connect In Cluster ?

Answer :

Physical fiber cable which is connect to the 2 nodes is referred to as a HTEARTBEAT

Question 15. Where Will Be The Configuration For Metadevice?

Answer :

#/and so on/lvm/md.Tab

         or

#/and so forth/opt/SUNWmg/md.Tab

LINUX/UNIX/SOLARIS Interview Questions
Question 16. Explain Raid0, Raid1, Raid3?

Answer :

RAID zero Concatenation/Striping
RAID 1 Mirroring
RAID 5-Striped array with rotating parity.

Concatenation: Concatenation is joining of  or extra disk slices to add up the disk area. Concatenation is serial in nature i.E. Sequential records operations are performed serially on first disk then 2nd disk and so on. Due to serial nature new slices may be brought up while not having to take the backup of complete concatenated volume, adding slice and restoring backup.
Striping: Spreading of statistics over a couple of disk drives specifically to decorate the overall performance by means of dispensing records in alternating chunks – sixteen okay interleave across the stripes. Sequential facts operations are accomplished in parallel on all of the stripes by means of studying/writing 16k facts blocks as an alternative form the disk stripes.
Mirroring: Mirroring presents statistics redundancy by way of concurrently writing records on to 2 sub mirrors of a reflected device. A submirror can be a stripe or concatenated extent and a mirror can have 3 mirrors. Main challenge here is that a mirror wishes as a good deal because the extent to be mirrored.
RAID five: RAID five presents records redundancy and advantage of striping and uses much less area than mirroring. A RAID 5 is made from at least 3 disks, that are striped with parity statistics written alternately on all of the disks. In case of a single disk failure the information may be rebuild the use of the parity information from the ultimate disks.
Question 17. What Are The Daemons In Nis Server?

Answer :

rpc.Yppasswdd
Ypxfrd
rpc.Ypupdated

Scalable Vector Graphics Interview Questions
Question 18. What Are Processing Daemon In Nis?

Answer :

Ypserv
Ypbind

UNIX/XENIX Interview Questions
Question 19. How To Boot The Solaris System In sixty four 0r 32 Bit Kernel?

Answer :

For 64 bit:
# eeprom boot-report=”/kernel/sparc9/unix
                       or
OK printenv boot-report
OK settenv boot-document kernel/sparc9/unix

For 32 bit:
# eeprom boot-report=”/kernel/unix
                       or
OK printenv boot-record
OK settenv boot-record kernel/unix

Question 20. Which Command To Lock The User Account?

Answer :

# lk username

UNIX Process Management Interview Questions
Question 21. What Is Difference Between Hard And Soft Mount?

Answer :

Hardmount: Normal report gadget mount used mainly for mounting nearby file systems. Once a file gadget is hard established, can use a ordinary filesystem untill its umount.

Soft mount: It lets in automatic unmounting if the filesystem is idle for a special timeout duration. It is particularly used for network filesystems like NFS It may be configured the usage of Autofs and the community filesystem can be gentle installed.

Question 22. To Find The Obp Environment Variable?

Answer :

OK printenv

Question 23. How To Find Out The Shared File System From Server And Client ?

Answer :

Server : # proportion  & dfmount
Client : # showmount –e (hostname) and dfshares

Net Micro Framework Interview Questions
Question 24. How To Start / Stop The Nfs Server ?

Answer :

# /and so on/init.D/nfs.Server start
# /etc/init.D/nfs.Server prevent

Siebel System Admin Interview Questions
Question 25. How To Delete “abc” Files Using Find Command ?

Answer :

# discover / -call “abc” –exec rm ;

Question 26. How Do You Add The Disk Without Reboot The Server?

Answer :

# devfsadm –c disk

Unix/Linux Interview Questions
Question 27. How To Change The Hostname And Ethernet Address In Single Command ?

Answer :

# /usr/sbin/sys-unconfig

Salesforce Admin Interview Questions
Question 28. How To Enable And Disable The Dtlogin?

Answer :

# /usr/dt/bin/dtconfig –e   ( allow)
# /usr/dt/bin/dtconfig –d   ( disable)

Question 29. How To Find The Kernel Bit Version Or Architecture?

Answer :

# isainfo –kv

Scalable Software Interview Questions
Question 30. How To Set Passwd Never Expire For A User?

Answer :

#passwd –x –1 (username)

Question 31. Explain Setuid, Setgid And Stickybit?

Answer :

Setuid : When setuid permission set on a executable record, consumer who access the file is granted access permission of the proprietor of the report.
              # discover / -prem –4000

setgid : Permission similar to setuid, The method is changed to proprietor of the report.
               # discover / -prem –2000

Stickybit : It is a special permission that protect the documents inside a public writable directory. Stickybit permission set the shared directory, consumer can create a documents or directory. But best through proprietor of the directory can alter or delete.
               # discover / -prem –one thousand

Question 32. What Is Umask?

Answer :

UMASK is a Unix environment variable, which routinely sets document permissions on newly created documents.

Solaris Administrator Interview Questions
Question 33. What Is Default Permission Of Files And Directory?

Answer :

report: 644
directory: 755

Salesforce Developer Interview Questions
Question 34. What Is Default Permission Of /and many others/passwd , /and so on/shadow Files?

Answer :

/and so forth/passwd:  644
/etc/shadow: 400

Question 35. As A User How He Can Change Is Passwd With Root Privilege.?

Answer :

Setuid to set on  /usr/bin/passwd  command

Question 36. What Are Performance Tool Used?

Answer :

Iostat ,vmstat , prstat , sar ,netstat, top

LINUX/UNIX/SOLARIS Interview Questions
Question 37. Which Service Assign Port No Dynamically?

Answer :

Rpc provider ( /and many others/rpc)

Question 38. What Is Nice And Renice Command Do?

Answer :

To set the excessive priority for the technique

-20 high priorities
+20 low priorities

Eg: # best –20 oracle

Question 39. How Will You Restart The Inetd Process?

Answer :

# Pkill –HUP inetd

Question 40. Tell Me The Port For Telnet, Ftp,nis,ssh,nfs?

Answer :

ftp = 21ssh = 22Telnet = 23nfs = 2049nis = 749

Scalable Vector Graphics Interview Questions
Question 41. In Which File Port No’s Are Defined?

Answer :

# /and so forth/service

Question forty two. If Telnet Not Working, What Are The Thing To Be Checked?

Answer :

Ping test, provider enable or no longer in (/and so forth/inetd.Conf), NIS hassle

If telnet isn't always operating, to start with you may no longer be get linked, login through console get entry to after which find out with ps grep telnetd or Kill -1

UNIX Process Management Interview Questions
Question 43. How Do You Check The Run Level?

Answer :

# who –r

Question 44. How Do You Check The No Of User Logged Into The System?

Answer :

# who

Question 45. How Will You Check The Process For Particular User?

Answer :

# ps –U oracle

          or

#ps –fu oracle 46. How To Check The No Of The Processor Available?

Answer :

# psrinfo –v

Question forty seven. How To Bring The Process To Offline Or Online?

Answer :

# psradm –f (no of the manner)
# psradm –a –n ( no of the method)

Question forty eight. How To Find The Boot Path In Solaris?

Answer :

# prtconf –vice chairman grep bootpath

       or

# eeprom

Question 49. What Is The Difference Between Dsk And Rdsk?

Answer :

DSK: Block stage gadgets
RDSK: Raw level tool or individual level device

Question 50. What Is The Protocol Supported By Nfs?

Answer :

UDP and TCP