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. This file type contains only data as a stream of characters - also known as a regular file
SIGTERM 15
HOME Vaiable
Ordinary File
useradd -n

2. Sent by hardware when it needs the processors' attention - caused by an external event
/etc/passwd
Init Phase
Interrupt
Device Driver

3. Device Information Command that displays device config information including hardware - pseudo devices - etc
strace
df
sysdef
smbd

4. In Solaris - the command that shares the file systems identified in the /etc/dfs/dfstab file
shareall
Device Names
lsmod
/etc/init.d

5. 6 Hardware Interface Module Functions: ________ - memory management - interrupt handling - low level device control - disk system management - Process synchronization & IPC
Process scheduling
init and telinit
File System
/etc/named.conf

6. File that controls how hostnames are resolved system-wide
lo0
Apache Directory Structure
/etc/nsswitch.conf
showmount -e <ip address>

7. Device Name that is used by the system administrator to refer to a particular device by using symbolic links - stored in the /dev directory
SIGKILL 9
Restricted Shell
umask
Logical Device Name

8. The profile in UNIX that all users get _______ using their own profile
/proc/sys
newgroup
before /etc/profile
Boot Prom

9. Presents each user with a prompt - executes user commands - and supports a custom environment for each user
Shell
Directory File
Process scheduling
/etc/passwd

10. Default Run Level for Solaris
3 - Multi-User Mode
Process scheduling
who -r
df -F ufs -o i

11. The basic file allocation file unit for Ext* - whose size is defined by the superblock
Samba
Signals
File System
Data Block

12. Command will show your used and free inodes
/etc/resolv.conf
LDAP Data Interchange Format (LDIF)
df -F ufs -o i
telinit -q

13. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
Schema
/proc/sys
Superblock
Boot Prom

14. Command to view your swap partition
df -k
start /sbin/init process
UNIX "Rings of Protection"
useradd -m

15. A pointer to a file's inode - can be thought of as having the linked file being "the same" as the original; ln <targetfile> <linkfile>
Apache Document Root
Hard Link - with syntax
3 - Multi-User Mode
/etc/resolv.conf

16. Device Name that the kernel uses to refer to devices on the system - IE 'sd' for IDE drive - 'fd' for floppy disk - etc
/etc/init.d
Instance Device Name
/etc/passwd
Hardware Interface Modules

17. 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
Directory Entry
df -v
before /etc/profile
/usr/sbin/slurpd

18. 4 Kernel Layer Functions: Process creation and termination - ________- file/disk access services - terminal handling services
I/O services
/etc/shadow
/etc/passwd
/etc/apache/httpd.conf

19. Three Types of _________: Physical - Instance - and Logical
Device Names
shareall
groupdel
Kernel

20. Command that verifies the current run-level
mmap()
who -r
Group Descriptor Table
System call

21. Default shell for most *Nix systems
id
Hardware Layer
bash
Boot Programs Phase

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

23. Syntax to add a path to PATH variable
Loadable Kernel Modules (LKM)
PATH=$PATH:/xxx/xxx/bin
telinit -q
Network Information Service Plus (NIS+)

24. Displays process list with attributes
ps -elf
init and telinit
Interrupt handlers
Low level file I/O

25. Hangup - restarts a daemon
SIGHUP 1
df -k
init and telinit
HOME Vaiable

26. File that specifies machines to use for name resolution
Data Block
/etc/resolv.conf
/etc/shadow
Ext*

27. Loopback interface in ifconfig
lo0
Library Function
share -F nfs /<path>
Network File System (NFS)

28. Command used to create a new group
groupadd
inetd -t
I/O services
init and telinit

29. Phase where the kernel initializes itself and begins loading modules using ufsboot. Once finished - it unmaps ufsboot
Directory File
Network Information Service Plus (NIS+)
Boot Programs Phase
Kernel Phase

30. A file that contains the name of another file - similar to a shortcut; ln -s <targetfile> <linkfile>
sysctl -a
truss
Symbolic Link - with syntax
UNIX "Rings of Protection"

31. Command used to view system calls accessed during the execution of a command on Solaris systems
nmbd
Group Descriptor Table
5 - Multi-user Mode
truss

32. Four Fields of /etc/inittab: Label Name - __________ - Action - Command
Six Superblock Components
/sbin/service
Device Names
Run-level Field

33. Default Run Level for Linux
5 - Multi-user Mode
Directory File
Kernel Layer
SIGQUIT 3

34. Surest kill
5 - Multi-user Mode
Low level file I/O
SIGKILL 9
Block File

35. Similar to -k; shows block size for each mounted file system
Boot Programs Phase
nmbd
lo0
df -v

36. Programs similar to GINA in Windows that provides the login prompt
/etc/passwd
File System Structures
getty and ttymon
/etc/nsswitch.conf

37. Command used to view RPC services and their appropriate ports
File System Structures
kill (sig -pid)
rpcinfo -p
before /etc/profile

38. File type that does not contain any "data" - but has attributes associated with it
Device File
ps -elf
openldap
inetd.d

39. For Samba - it implements file and print services - as well as authentication and authorization
groupadd
Directory Entry
Boot Prom Phase
smbd

40. The web server widely used in the public domain that was based off of a UNIX Web server
Apache
lsmod
lo0
I/O services

41. Polls the /etc/inittab file after it has been modified
Apache Server Root
telinit -q
/etc/group
Hardware Interface Modules

42. Two Forms of Apache: __________ and Source (source code)
init and telinit
Inode
Binary (already built/compiled)
Network Information Service Plus (NIS+)

43. Converts a process running in user mode to a protected kernel mode process
System Call Interface
df -h
Init Phase
ps -elf

44. Command in Linux that shows the status of loadable kernel modules that are currently loaded
Ordinary File
lsmod
init and telinit
Restricted Shell

45. Command used to print UID and GID
id
sched PID of '0' -
prtconf
System Call

46. This Layer includes hardware such as CPU - system memory - the terminal - disks - CD-ROM - and NIC
Symbolic Link - with syntax
Hardware Layer
showmount -e <ip address>
before /etc/profile

47. Daemon that is used to configure network services in Solaris
Hardware Layer
useradd -m
inetd.d
openldap-servers

48. Command that verifies the current run-level
rpcinfo -p
who -r
Boot Programs Phase
Kernel

49. 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
Init Phase
Block File
modinfo
Kernel Layer

50. In Solaris - the command that shows a machine with an exported file system
df -h
Memory Management Unit (MMU)
dmesg
showmount -e <ip address>