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. Character used to stop a service from starting during boot up
Environment
File Timestamps
mmap()
SIGKILL 9
Network File System (NFS)
System Call
Schema
inetd -t
id
showmount -e <ip address>
useradd -m
showmount -e <ip address>
lsmod
openldap-servers
sysctl -w
ps -elf
/sbin/service
/etc/services
Device File
shareall
Lightweight Directory Access Protocol (LDAP)
3 - Multi-User Mode
Init Phase
nmbd
System Call Interface
Directory Entry
share -F nfs /<path>
Apache Error Log
System call
3 - Multi-User Mode
sysctl -a
Superblock
Boot Prom
df -h
strace
df -F ufs -o i
User to Kernel Transition Process
Run-level Field
/etc/init.d
Logical Device Name
UNIX "Rings of Protection"
df -h
/etc/inetd.conf
HOME Vaiable
Binary (already built/compiled)
UNIX "Rings of Protection"
Apache
Hardware Layer
Memory Management Unit (MMU)
LDAP Data Interchange Format (LDIF)
uname()
PATH=$PATH:/xxx/xxx/bin
Interrupt handlers
openldap-clients
/etc/xinetd.d
Shell
.profile
File System Structures
/etc/inid/nfs.client
telinit -q
/etc/group
Interrupt
who -r
Boot Programs Phase
Hardware Address Translation (HAT)
Library Function
Apache Server Root
5 - Multi-user Mode
I/O services
/etc/resolv.conf
unlink()
init and telinit
Directory File
'#'
getty and ttymon
Kernel Phase
Network Information Service Plus (NIS+)
Kernel Layer
SIGTERM 15
umask
Ordinary File
mount -F nfs hostname:directory / <mount point>
Low level file I/O
prtconf
getty and ttymon
Ext* File System
/etc/hosts
touch -m/-a
lo0
Physical Device Name
SIGQUIT 3
Device
socket()
who -r
init and telinit
/etc/shadow
Interrupt handlers
Block File
df -h
Boot-up
start /sbin/init process
df -k
truss
sh
Hardware Address Translation (HAT)
Trap
Process scheduling
df
newgroup
Data Block
sysdef
Spawned
groupadd
/proc/sys
Boot Prom
/usr/sbin/slurpd
Apache Directory Structure
Symbolic Link - with syntax
Init Phase
Hardware Layer
System call
free
Boot Programs Phase
Loadable Kernel Modules (LKM)
df
/etc/nsswitch.conf
rpcinfo -p
smbd
Boot Prom Phase
Three Types of Signals
bash
useradd -n
Restricted Shell
free
Device File
Kernel
Kernel Layer
Boot Prom Phase
Apache Document Root
Memory Management Unit (MMU)
I/O services
ufsboot
Inode Table of Contents
max_nprocs
User Layer
5 - Multi-user Mode
sysctl -p
Kernel
/etc/named.conf
Device Names
inetd.d
/etc/passwd
SIGINT 2
Instance Device Name
Inode
Binary File
Hardware Interface Modules
fdisk -l
Run-level Field
User to Kernel Transition Process
Six Superblock Components
Signals
sysctl
df -k
Device Driver
openldap
Process scheduling
modinfo
Ext*
Binary
Samba
groupdel
Shell
System Call Interface
before /etc/profile
/etc/passwd
'#'
Process States
sched PID of '0' -
SIGHUP 1
ROOT Account
start /sbin/init process
Berkeley Internet Name Daemon (BIND)
Text File
Hardware Interface Modules
useradd -D
Kernel Phase
kill (sig -pid)
Hard Link - with syntax
CIFS
usermod
/etc/apache/httpd.conf
Information Commands
ufsboot
telinit -q
SUID/SGID
dmesg
User Layer
pwconv
df -k
Group Descriptor Table
sysdef
/etc/xinetd.d
File System
df -F ufs -o i
df -v
df -v
Character File

2. Default Run Level for Linux
5 - Multi-user Mode
User to Kernel Transition Process
/usr/sbin/slurpd
newgroup

3. User space (outer ring) - the area in memory where user processes run and Kernel space (inner ring) - where kernel services are provided via kernel processes
Apache Server Root
Hardware Interface Modules
LDAP Data Interchange Format (LDIF)
UNIX "Rings of Protection"

4. Commands that reveals all *nix file systems - including disk space usage and their logical mount points
df -k
SUID/SGID
Kernel
Hardware Interface Modules

5. Four Fields of /etc/inittab: Label Name - __________ - Action - Command
Run-level Field
init and telinit
inetd.d
Ext* File System

6. File that specifies machines to use for name resolution
Network File System (NFS)
/etc/inetd.conf
fdisk -l
/etc/resolv.conf

7. Where master copies of the startup scripts resides
File Timestamps
unlink()
Block File
/etc/init.d

8. In Solaris - the command that shows a machine with an exported file system
showmount -e <ip address>
User Layer
Init Phase
umask

9. Daemon that lists port/service mappings
/etc/services
/etc/passwd
Network File System (NFS)
Init Phase

10. Phase that runs self diagnostics and verifying the system's hardware and memory - as well as POST - building the device tree - displaying the system banner - and running bootblk
User to Kernel Transition Process
Boot Prom Phase
Interrupt
/etc/xinetd.d

11. Device file for devices such as the terminal - tape drive - printer - etc; located in the /dev/rdsk directory
/etc/xinetd.d
df -k
openldap-servers
Character File

12. File where group memberships are established - inluding group names - encrypted password - GID - and users in each group
Schema
telinit -q
start /sbin/init process
/etc/group

13. A simple data structure that contains the file name and the inode address where the file's metadata can be found - also contains a pointer to the next entry
I/O services
Directory Entry
df -k
/etc/xinetd.d

14. Phase with a sole function of loading the secondary boot program - ufsboot - and executing it
Memory Management Unit (MMU)
Boot Programs Phase
/etc/inetd.conf
df

15. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
Hardware Layer
id
Boot Prom
df -v

16. Command used to create a new group
/etc/inetd.conf
share -F nfs /<path>
Signals
groupadd

17. Default Run Level for Solaris
Hardware Address Translation (HAT)
df -k
3 - Multi-User Mode
/etc/init.d

18. Three File Types: Ordinary - Directory - _______
dmesg
socket()
Device
SIGINT 2

19. File that contains information on the user's password and data - including encrypted password - min/max days of password change - inactivity timeframe - etc
Superblock
Physical Device Name
/etc/shadow
System Call

20. Command used on a Linux system to view the disk's physical partitioning scheme
Berkeley Internet Name Daemon (BIND)
sysctl -a
useradd -D
fdisk -l

21. Controls the hardware that manages mapping of virtual to physical memory
UNIX "Rings of Protection"
sh
useradd -D
Hardware Address Translation (HAT)

22. Three Types of _________: Physical - Instance - and Logical
Device Names
/etc/hosts
/etc/passwd
Binary (already built/compiled)

23. Three Main Areas of ________________: Server Root - Document Root - Default Error Log
Apache Directory Structure
/etc/xinetd.d
/etc/named.conf
df

24. Three Unique _________ Characteristics: Cannot be renamed/deleted - has a user ID of 0 - and has a prompt of '#'
showmount -e <ip address>
ROOT Account
df -h
Ext*

25. Default shell for most *Nix systems
openldap
Binary
bash
id

26. Gives UNIX/Linux users the ability to access shared resources on Windows machines by implementing CIFS
Physical Device Name
ps -elf
Instance Device Name
Samba

27. 4 Kernel Layer Functions: Process creation and termination - ________- file/disk access services - terminal handling services
File System Structures
Text File
I/O services
openldap-clients

28. Shows all possible parameters
sysctl -a
5 - Multi-user Mode
showmount -e <ip address>
openldap-clients

29. A file that contains the name of another file - similar to a shortcut; ln -s <targetfile> <linkfile>
Symbolic Link - with syntax
Three Types of Signals
File System
5 - Multi-user Mode

30. Two Ordinary File Types: Text and ______
Kernel Phase
Binary
df -k
bash

31. Three Steps of Kernel Phase: Create a user process - __________ - and starts other processes by reading /etc/inittab
start /sbin/init process
Logical Device Name
System call
getty and ttymon

32. Hangup - restarts a daemon
Binary
Trap
Kernel Layer
SIGHUP 1

33. Daemon that is used for viewing network services in Linux - has more customization than the Solaris counterpart
df
/etc/xinetd.d
Schema
showmount -e <ip address>

34. Surest kill
SIGKILL 9
Boot Prom Phase
Memory Management Unit (MMU)
prtconf

35. Secondary boot program that locates and load the basic kernel
Character File
Shell
Apache Document Root
ufsboot

36. Command will show your used and free inodes
df -F ufs -o i
Interrupt
usermod
File Timestamps

37. In Solaris - the command that shares the file systems identified in the /etc/dfs/dfstab file
Interrupt
Instance Device Name
Hardware Address Translation (HAT)
shareall

38. located 1024 bytes from the start of the file system and is 1024 bytes in size
Inode Table of Contents
Superblock
touch -m/-a
Shell

39. Command used to delete a group
sysdef
/etc/inetd.conf
id
groupdel

40. LDAP package that contains the servers and other utilities necessary to configure and run the LDAP server
openldap-servers
df -h
PATH=$PATH:/xxx/xxx/bin
File System Structures

41. Command to view your swap partition in human readable format
df
/usr/sbin/slurpd
df -h
Device File

42. Virtual directory that provides an interface to sysctl parameters - allowing you to examine and change them
Boot-up
/proc/sys
getty and ttymon
Boot Prom Phase

43. 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
Six Superblock Components
init and telinit
sysctl -a
Kernel Layer

44. For Samba - it provides name resolution and service announcement
nmbd
free
/etc/nsswitch.conf
System call

45. The core of the operating system that is loaded into memory at system boot; it manages the hardware and performs system services
Memory Management Unit (MMU)
Kernel
mount -F nfs hostname:directory / <mount point>
bash

46. LDAP package that contains the libraries necessary to run the Open LDAP server
Restricted Shell
sysctl
openldap
df -v

47. Command that displays the amount of free and used memory
Hardware Layer
free
Ext*
Signals

48. Total number of inodes and blocks - block size - number of blocks/inodes per group and number or reserved blocks before the first block group
/etc/group
Six Superblock Components
Boot Prom Phase
Directory File

49. Allow the user to share file systems among networked connections
Network File System (NFS)
System Call Interface
sysctl -w
Kernel Layer

50. This Layer consists of user processes that are running - including Shells - UNIX commands - utility programs - and user application programs
socket()
Apache Directory Structure
User Layer
sysctl -w