Test your basic knowledge |

Unix Operating System

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Command in Linux that shows the status of loadable kernel modules that are currently loaded
groupdel
lsmod
SIGTERM 15
df -F ufs -o i

2. Default shell for most *Nix systems
id
df -v
bash
User Layer

3. This Layer contains the system call interface and handles the mapping between user request and device driver actions - as well as converting user system calls to kernel service calls
Kernel Layer
Restricted Shell
SIGQUIT 3
Memory Management Unit (MMU)

4. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
id
Boot Prom
/etc/init.d
Physical Device Name

5. Allows a device driver to be linked into and removed from the kernel while it is running
Hardware Layer
showmount -e <ip address>
Inode Table of Contents
Loadable Kernel Modules (LKM)

6. Quit from terminal
Kernel
SIGQUIT 3
newgroup
df -h

7. The main configuration file for BIND
LDAP Data Interchange Format (LDIF)
/etc/named.conf
uname()
Kernel Phase

8. Command used to switch to a new group before creating a file that would be used by a different current group - similar to 'su'
Boot Prom
Boot Programs Phase
id
newgroup

9. Makes the new home directory if it does not exist
df -v
Process States
df -F ufs -o i
useradd -m

10. Command that assigns default permissions for a file or directory via a "subtraction" method
Kernel
Samba
umask
Kernel Phase

11. Polls the /etc/inittab file after it has been modified
telinit -q
groupdel
Interrupt handlers
getty and ttymon

12. Command used to delete a group
uname()
inetd -t
groupdel
unlink()

13. Commands used to change your current run-level
df -v
init and telinit
Boot Prom
File System Structures

14. Programs similar to GINA in Windows that provides the login prompt
Schema
strace
/etc/init.d
getty and ttymon

15. The core of the operating system that is loaded into memory at system boot; it manages the hardware and performs system services
Low level file I/O
id
Apache Server Root
Kernel

16. Terminal Interrupt via user keypress
Ext*
/etc/hosts
start /sbin/init process
SIGINT 2

17. Command used to create a new group
openldap-servers
groupadd
/usr/sbin/slurpd
Interrupt handlers

18. A low level program that allows the kernel to communicate with the specific piece of hardware
5 - Multi-user Mode
Directory File
sched PID of '0' -
Device Driver

19. This Layer contains the system call interface and handles the mapping between user request and device driver actions - as well as converting user system calls to kernel service calls
Apache Error Log
Inode Table of Contents
Kernel Layer
Inode

20. Command that can easily change timestamps on *Nix systems
'#'
touch -m/-a
/etc/named.conf
Three Types of Signals

21. Gives UNIX/Linux users the ability to access shared resources on Windows machines by implementing CIFS
Samba
dmesg
Boot Prom
lo0

22. Command used to view system calls accessed during the execution of a command on Solaris systems
Kernel
Hardware Layer
SIGKILL 9
truss

23. Two Types of _______________: Root (AKA Boot) and Swap
uname()
.profile
Three Types of Signals
File System Structures

24. Command that displays the amount of free and used memory
3 - Multi-User Mode
bash
/etc/passwd
free

25. The command to report file system disk space usage
newgroup
Inode Table of Contents
df
openldap-servers

26. Command used on a Linux system to view the disk's physical partitioning scheme
fdisk -l
telinit -q
Hardware Layer
strace

27. Displays default values when adding a new user with no options
useradd -D
Init Phase
Hardware Address Translation (HAT)
/etc/passwd

28. Three Unique _________ Characteristics: Cannot be renamed/deleted - has a user ID of 0 - and has a prompt of '#'
ROOT Account
SIGHUP 1
Directory Entry
CIFS

29. Used to describe the layout of block groups
fdisk -l
sysctl -a
Group Descriptor Table
rpcinfo -p

30. Three Reference Files on _____ for BASH: .bash_profile - .profile - or .bash_login
Boot-up
unlink()
Memory Management Unit (MMU)
User Layer

31. File where group memberships are established - inluding group names - encrypted password - GID - and users in each group
df -v
truss
showmount -e <ip address>
/etc/group

32. 'K' and 'S' in rc scripts: K is Kill - S is _______
Network File System (NFS)
Ordinary File
Spawned
Samba

33. init loads from /sbin/init - reads the /etc/inittab file and executes the listed run-control scripts located in /sbin/rd*.d
Apache Directory Structure
Init Phase
UNIX "Rings of Protection"
lsmod

34. In Solaris/Linux - the command used to mount a share from a server to a client's system
Device
mount -F nfs hostname:directory / <mount point>
/proc/sys
useradd -D

35. Used by the cd Command when no argument follows
Run-level Field
HOME Vaiable
fdisk -l
/etc/nsswitch.conf

36. 4 Kernel Components: __________ - process scheduler - memory management - and system services
pwconv
Interrupt handlers
showmount -e <ip address>
Kernel Phase

37. Device Name that represents the "full device" pathname for a device - located in the /devices directory
Physical Device Name
Directory File
df -F ufs -o i
telinit -q

38. In Solaris - the command that shares the file systems identified in the /etc/dfs/dfstab file
sysctl -a
/etc/hosts
shareall
Process scheduling

39. Four Fields of /etc/inittab: Label Name - __________ - Action - Command
Environment
showmount -e <ip address>
touch -m/-a
Run-level Field

40. LDAP package that contains command line tools for viewing/modifying directories on an LDAP server
getty and ttymon
openldap-clients
sysctl -p
modinfo

41. Presents each user with a prompt - executes user commands - and supports a custom environment for each user
SIGKILL 9
smbd
sysctl
Shell

42. Daemon that is used to configure network services in Solaris
'#'
inetd.d
/etc/shadow
rpcinfo -p

43. Command that allows files to be "memory mapped" by application programs
mmap()
Directory File
Memory Management Unit (MMU)
sysctl -a

44. Polls the /etc/inittab file after it has been modified
Process scheduling
telinit -q
CIFS
df

45. For Samba - it provides name resolution and service announcement
Directory File
newgroup
Restricted Shell
nmbd

46. Phase where the kernel initializes itself and begins loading modules using ufsboot. Once finished - it unmaps ufsboot
Three Types of Signals
truss
Kernel Phase
df -h

47. Four Fields of /etc/inittab: Label Name - __________ - Action - Command
/usr/sbin/slurpd
Apache
UNIX "Rings of Protection"
Run-level Field

48. Where Apache keeps it's essential files - stored in /var/apache
df
Apache Server Root
df -h
User Layer

49. Similar to -k; shows block size for each mounted file system
df -v
df -F ufs -o i
SIGKILL 9
df -F ufs -o i

50. Commands that reveals all *nix file systems - including disk space usage and their logical mount points
PATH=$PATH:/xxx/xxx/bin
df -k
Lightweight Directory Access Protocol (LDAP)
SUID/SGID