Hi,
Tried to answer some unanswered questions
Correct me If iam wrong
3. What is the default login shell if that field in /etc/passwd is left blank?
No login is permitted
4. What are the limitations on a user login name in /etc/passwd?
number of characters
use of control characters
5. What is the difference between sections 1 and 8 in the UNIX manual set?
section 1 is for user commands
section 8 for system calls ?
11. What is the difference between a hard link and a soft link?
hard links cannot span across different filesystem.
But soft links can.
16. What is the difference between a gateway and a router?
gateway can function at application layer
router will function only at network layer
17. What is the difference between the real and effective UID of a process (UID vs. EUID).
real UID says which user has started the process. Normally Effective UID and real UID will be same.
But if setuid is set on the program then real UID refers to user who ran it, the effective UID refers to the user who owns the file.
21. Where would you find the executable for `init' on SunOS, BSD 4.5, HP/UX.
HP-UX : /etc/init
BSD: /sbin/init
22. Where would you find the numeric value of the SIGPIPE signal?
#kill -l ( letter l )
23. What is the primary difference between SIGKILL and SIGTERM.
In cleaning up
26. What is the class designation of an IP address (A, B, or C) used to determine?
number of hosts
27. What class of IP address is 128.138.243.8?
class A ....
28. How do you unpack neattoy.tar.gz.shar?
#sh neattoy.tar.gz.shar
29. How do you forge mail "From santa.claus@northpole.org"?
telnet xx.xxx.xxx.xxx 25
helo domain
mail from: santa.claus@northpole.org
31. How many SCSI devices can be connected to a workstation with a single SCSI controller interface?
6
32. What is the SCSI id number of a workstation SCSI controller interface?
7
33. What three commands are used to modify file ownership and permissions?
chmod , chown , chacl , umask
34. How many terminators does an Ethernet network have?
None
35. If a SCSI hard disk was formatted on a Sun and no data has yet been written to it, what needs to be done to use it on a non-Sun UNIX system?
pvcreate and use it
39. How do you calculate the total number of blocks or sectors available on a disk?
diskinfo
44. Where are the files which are used to re-build a kernel?
/stand/system , conf.c /stand/dlkm/*.o
45. Which system or systems on a network answers an ARP request packet?
one system having the requested IP address
50. When you change /etc/exports, what must be done for mountd to recognize and incorporate the change?
kill -1
52. Via NFS, by default the root access is enabled or disabled?
disabled
53. On an NFS mounted filesystem, is a soft link is evaluated (followed) in the server hierarchy or client hierarchy?
server hierarchy
54. What file must be configured on all DNS clients and what are the minimum two lines it must contain to function?
/etc/resolv.conf
nameserver xx.xxx.xxx.xx
domain domain.com
56. What option to sendmail invokes rule parsing test mode?
sendmail -bt
59. How does the system determine which shell to invoke to execute a shell script?
If user defined then defined shell else current shell
61. If a user has a mail loop, what two things should be checked at both systems involved to determine the source of the problem?
MX configuration,
aliases file
regards,
U.SivaKumar
Innovations are made when conventions are broken
