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. The profile in UNIX that all users get _______ using their own profile
Inode Table of Contents
before /etc/profile
showmount -e <ip address>
mmap()

2. Creates a user with default group; if not given - a new group with the user's name will be created
getty and ttymon
5 - Multi-user Mode
useradd -n
SIGHUP 1

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

4. In Solaris/Linux - the command used to mount a share from a server to a client's system
User Layer
/etc/apache/httpd.conf
mount -F nfs hostname:directory / <mount point>
who -r

5. Command in Linux that shows the status of loadable kernel modules that are currently loaded
Lightweight Directory Access Protocol (LDAP)
Binary
File System
lsmod

6. Shows all possible parameters
Signals
SIGHUP 1
sysctl -a
Low level file I/O

7. Three Unique _________ Characteristics: Cannot be renamed/deleted - has a user ID of 0 - and has a prompt of '#'
ROOT Account
Data Block
SIGTERM 15
Kernel Layer

8. 4 Kernel Components: __________ - process scheduler - memory management - and system services
Hardware Address Translation (HAT)
Kernel Layer
Interrupt handlers
Six Superblock Components

9. Device Information Command that displays device config information including hardware - pseudo devices - etc
sysdef
socket()
/etc/services
df -F ufs -o i

10. File that maps IP addresses to hostnames and aliases
Kernel
/etc/hosts
Apache Document Root
Run-level Field

11. File type that does not contain any "data" - but has attributes associated with it
Run-level Field
SUID/SGID
Device File
Shell

12. Presents each user with a prompt - executes user commands - and supports a custom environment for each user
share -F nfs /<path>
Shell
Text File
Apache Document Root

13. Converts a process running in user mode to a protected kernel mode process
Library Function
System Call Interface
df -h
Hardware Layer

14. In Solaris - the command that shares the file systems identified in the /etc/dfs/dfstab file
Low level file I/O
openldap-servers
shareall
start /sbin/init process

15. Command that logs information to the Solaris syslog - specifically to the /var/adm/messages
I/O services
start /sbin/init process
inetd -t
/etc/apache/httpd.conf

16. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
Samba
Boot Prom
/etc/passwd
useradd -m

17. Default Run Level for Solaris
df -k
/etc/resolv.conf
3 - Multi-User Mode
useradd -D

18. Loopback interface in ifconfig
Memory Management Unit (MMU)
lo0
id
Hardware Address Translation (HAT)

19. When a user process executes a system call and begins executing kernel code
useradd -n
Environment
User Layer
User to Kernel Transition Process

20. Lists the block on the disc where the data is stored - usually has a fixed size
df -h
unlink()
df
Inode Table of Contents

21. Allows you to change a variable in the sysctl.conf
sysctl -w
Boot Prom Phase
/etc/nsswitch.conf
Device

22. Three Files Associated with Each User: _________ - /etc/shadow - and /etc/group
/etc/passwd
/etc/services
Device
rpcinfo -p

23. O - Running - R - Can be Executed - (S)leeping - (Z)ombie - T - Stopped
sched PID of '0' -
Process States
Apache Directory Structure
Environment

24. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
Boot Prom
Data Block
3 - Multi-User Mode
Shell

25. Device file for devices such as floppy drive - CDROM - etc; located in the /dev/dsk directory
Hardware Address Translation (HAT)
File System
Block File
df

26. Where the main log files reside - including the Access_log and Error_log
Hardware Interface Modules
Low level file I/O
getty and ttymon
Apache Error Log

27. Command that displays the amount of free and used memory
Logical Device Name
CIFS
free
/etc/xinetd.d

28. Surest kill
SIGKILL 9
Hard Link - with syntax
who -r
Kernel Phase

29. Command used to view RPC services and their appropriate ports
SIGINT 2
ps -elf
free
rpcinfo -p

30. Displays process list with attributes
ps -elf
Interrupt handlers
Interrupt
smbd

31. Command that shows disk space usage and logical mount points in a human readable format
sysctl -w
pwconv
Shell
df -h

32. Command used to print UID and GID
Information Commands
bash
id
Boot Programs Phase

33. Polls the /etc/inittab file after it has been modified
Hardware Address Translation (HAT)
telinit -q
touch -m/-a
Boot Prom Phase

34. Command used to delete a group
getty and ttymon
df -h
groupdel
rpcinfo -p

35. These are found within the kernel layer at the level closest to the hardware
Hardware Interface Modules
/etc/init.d
free
UNIX "Rings of Protection"

36. Default shell for Solaris
User to Kernel Transition Process
sh
df -k
Kernel Layer

37. 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
Trap
Boot Prom Phase
touch -m/-a
getty and ttymon

38. Two Types of Variables: Local and ________
Environment
Binary File
ROOT Account
/etc/passwd

39. Secondary boot program that locates and load the basic kernel
File Timestamps
Character File
ufsboot
Hardware Address Translation (HAT)

40. Commands used to change your current run-level
Apache
Interrupt handlers
init and telinit
/etc/shadow

41. 4 Kernel Layer Functions: Process creation and termination - ________- file/disk access services - terminal handling services
'#'
init and telinit
I/O services
/etc/xinetd.d

42. Three Device ____________: prtconf - sysdef - dmesg
UNIX "Rings of Protection"
Information Commands
Lightweight Directory Access Protocol (LDAP)
mount -F nfs hostname:directory / <mount point>

43. Ordinary file that contains both printable and non-printable characters - ex - most UNIX executables
Binary File
Network Information Service Plus (NIS+)
who -r
bash

44. These are found within the kernel layer at the level closest to the hardware
lo0
Hardware Interface Modules
Device File
df

45. Three Main Areas of ________________: Server Root - Document Root - Default Error Log
Apache Directory Structure
Process scheduling
sh
showmount -e <ip address>

46. Hangup - restarts a daemon
SIGHUP 1
File Timestamps
prtconf
Apache Error Log

47. Daemon that lists port/service mappings
Memory Management Unit (MMU)
/etc/services
Interrupt
unlink()

48. In Solaris - the software that handles all of the DNS configuration
usermod
sysdef
Berkeley Internet Name Daemon (BIND)
Kernel

49. Device file for devices such as the terminal - tape drive - printer - etc; located in the /dev/rdsk directory
Superblock
newgroup
Character File
/usr/sbin/slurpd

50. 4 Kernel Layer Functions: Process creation and termination - ________- file/disk access services - terminal handling services
I/O services
Instance Device Name
openldap
Boot Programs Phase