Solaris Interview questions with answers for Storage professionals

31) How will you set a default router ?
A) # /etc/defaultrouter

32) How to remove all current routes and assign 192.168.1.100 as default router?
A) # route flush
# route add default 192.168.1.100

33) How to change the network settings ?
A) # sys-unconfig

34) What all does the NVRAM store?
A) Ethernet Address / Host ID / Time of Day (TOD) clock and EEPROM Parameters

35) Where are all the port numbers stored?
A) Port numbers are stored in /etc/services

36) Where are eeprom file stored ?
A) /usr/sbin/eeprom

37) Some important NIS commands :
1) # ypcat hosts à Prints info from hosts database
2) # ypmatch host1 hosts à Match individual host entries
3) # ypmatch user1 passwd
4) # ypwhich à Returns NIS master server.

38) Controlling the tape drive ?
1) mt –f /dev/rmt/0n à ‘n’ indicates no rewind.

39) What are the network utilities ?
1) snoop à To capture network packets & display contents
2) netstat –i à Displays state of Ethernet address
3) ndd command à Set & examine kernel parameters namely TCP/IP drivers.

40) Network Configuration :
1) /etc/resolv.conf : Contains Internet domain name, name server and search order.

2) /etc/nsswitch.conf : Specifies information source from files, NIS, NIS+ or DNS

3) /etc/hostname.[int](hme0|eri0|le0] : IP v4 host

4) /etc/nodename : IP v6 host

5) /etc/inet/hosts : Host namefile (/etc/host links to this file)

6) /etc/inet/netmasks : TCP/IP subnet router

7) /etc/inet/protocols : Network protocols

8) /etc/inet/services : Network service name & port numbers

9) /etc/notrouter : Create this file to prevent in.routed or in.rdiscd from starting at boot time

10) /etc/inet/inetd.conf : Internet super daemon config file

11) To change hostname / ip address :

/etc/hostname.{int}(hme0|le0)
/etc/nodename
/etc/inet/hosts
/etc/net/*/hosts
/etc/defaultrouter
/etc/resolv.conf


41) How to configure interfaces at boot time>
A) /etc/rcS.d/s30network.sh file à This script is run each time system is booted. It uses ifconfig utility to configure each interface with IP add & other network info.It searches for files called : hostname.xxn in /etc where xx à int type & nà instance of interface.

Emai roger.smithson@gmail.com for FREE Storage Study guide & many more storage interview questions

Solaris Interview Questions from Real Storage Company Interviews

21) How will you use “shutdown” command?
A) # shutdown –i0 –g300 –y

22) How will you check the OBP version of your system ?
A) Use “ banner” command at the ok prompt

23) Explain the Solaris Boot process?
A) 23.1 ) Boot Prom Phase : Runs POST to verify system hardware and memory Loads “bootblk” primary boot program.
23.2) Boot Program Phase : “bootblk” loads the finds “ufsboot” and loads it in memory.ufsboot loads the kernel.
23.3) Kernel Initialization Phase : Loads modules using “ufsboot”
Creates user processes and starts /sbin/init process.
23.4) Initialization Phase : Starts “rc” scripts. These scripts check & mounts file System, starts various processes and perform system maintanence tasks

24) Backup And Restore :
Full backup : # ufsdump 0uf /dev/rmt/0 /
Where 0 à indicates full backup f à Path of the backup device u à update the dumpdates file.
Restore : # ufsrestore if /dev/rmt/0

25) How to temporary disable user’s login.
A) Log in as “root”
B) Create /etc/nologin file
# vi /etc/nologin
C) Include a message
D) Close and Save the file.

26) What does ‘Probe’ command do?
A) probe-scsi-all à list all internal and external scsi devices
B) probe-ide-all à List all ide devices

27) How to find whether a system is configured for 32-bit or 64-bit?
A) # isainfo -v

28) How to activate Ethernet card ?
A) # ifconfig qfe0 plumb

29) How will you assign ip address to system?
A) # ifconfig qfe0 192.168.0.1 netmask 255.255.255.0 up

30) How will you check current ip configuration?
A) # ifconfig –a

I encourage the blog readers to share their IT work experience & any interview tips or interview questions - anyone who sends original articles will get 4 FREE downloadble Storage Study materials. Thanks Dushyant (scorpio) for sharing above interview questions on Solaris