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. 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
Library Function
Directory Entry
sysdef
Environment

2. Displays process list with attributes
ufsboot
df -k
ps -elf
openldap-clients

3. File that inetd daemon gets it's instructions from - maintains a file format that is the same across all platforms
/etc/inetd.conf
openldap
df -v
max_nprocs

4. Polls the /etc/inittab file after it has been modified
Berkeley Internet Name Daemon (BIND)
telinit -q
Memory Management Unit (MMU)
/etc/inetd.conf

5. Shows all possible parameters
PATH=$PATH:/xxx/xxx/bin
df -v
sysctl -a
Network Information Service Plus (NIS+)

6. This Layer includes hardware such as CPU - system memory - the terminal - disks - CD-ROM - and NIC
Boot Programs Phase
Interrupt
Interrupt handlers
Hardware Layer

7. Command used to switch to a new group before creating a file that would be used by a different current group - similar to 'su'
newgroup
useradd -D
/etc/shadow
Device File

8. File that maps IP addresses to hostnames and aliases
id
Network File System (NFS)
/etc/hosts
System call

9. In Solaris - the command that shows a machine with an exported file system
System call
SIGHUP 1
showmount -e <ip address>
Device

10. Virtual directory that provides an interface to sysctl parameters - allowing you to examine and change them
Binary (already built/compiled)
/proc/sys
df -v
touch -m/-a

11. Three Files Associated with Each User: _________ - /etc/shadow - and /etc/group
LDAP Data Interchange Format (LDIF)
inetd.d
/etc/passwd
User Layer

12. Returns system information pertaining to the platform
uname()
before /etc/profile
inetd -t
/etc/passwd

13. This Layer consists of user processes that are running - including Shells - UNIX commands - utility programs - and user application programs
User Layer
Device File
Apache Document Root
useradd -n

14. The way used in LDAP to describe the format and attributes of data in the server
Schema
Boot Prom Phase
Hardware Interface Modules
Device File

15. Sysdef parameter that defines the maximum number of processes that will run on the system
bash
max_nprocs
System call
useradd -m

16. File that controls how hostnames are resolved system-wide
File System
/etc/nsswitch.conf
Shell
useradd -D

17. Default shell for Solaris
df -h
sh
before /etc/profile
Hardware Address Translation (HAT)

18. Command that displays the amount of free and used memory
LDAP Data Interchange Format (LDIF)
I/O services
Hardware Layer
free

19. Controls the hardware that manages mapping of virtual to physical memory
Hard Link - with syntax
Kernel Phase
Hardware Address Translation (HAT)
Six Superblock Components

20. Two Daemons in Samba for _____ : smbd and nmbd
LDAP Data Interchange Format (LDIF)
CIFS
Init Phase
df -v

21. Two Ways to Stop Services in Linux: Editing the _______ service file - and using the chkconfig command
HOME Vaiable
truss
/etc/xinetd.d
Shell

22. The data structure that contains metadata for every file and directory - has a fixed 128 bye size
Kernel Layer
Boot Programs Phase
Inode
inetd.d

23. The core of the operating system that is loaded into memory at system boot; it manages the hardware and performs system services
df -k
Kernel
groupadd
LDAP Data Interchange Format (LDIF)

24. Command used on a Linux system to view the disk's physical partitioning scheme
File System Structures
df -k
Hardware Interface Modules
fdisk -l

25. Command to view your swap partition in human readable format
SUID/SGID
df -h
lsmod
Directory File

26. Three Reference Files on _____ for BASH: .bash_profile - .profile - or .bash_login
Boot-up
SIGKILL 9
strace
df -k

27. Types Two ___________: Block and Character
Trap
Device File
Spawned
Boot Prom

28. Controls the hardware that manages mapping of virtual to physical memory
sched PID of '0' -
Hardware Address Translation (HAT)
Binary File
smbd

29. Command that can easily change timestamps on *Nix systems
System Call Interface
touch -m/-a
Run-level Field
Hardware Address Translation (HAT)

30. Sent by hardware when it needs the processors' attention - caused by an external event
I/O services
Interrupt
Apache Document Root
5 - Multi-user Mode

31. Default termination signal
Boot Programs Phase
SIGTERM 15
Boot Prom
Kernel Phase

32. 'Active Directory for Solaris' that is designed to eliminate the need to duplicate configuration data by using a centrailzed master server instead
Network Information Service Plus (NIS+)
Device File
Inode
User to Kernel Transition Process

33. Where the actual HTML web pages reside - stored in /var/apache/htdocs
Apache Document Root
Lightweight Directory Access Protocol (LDAP)
Hardware Layer
/etc/xinetd.d

34. Two Types of Variables: Local and ________
Environment
getty and ttymon
UNIX "Rings of Protection"
openldap

35. Syntax to add a path to PATH variable
UNIX "Rings of Protection"
HOME Vaiable
inetd -t
PATH=$PATH:/xxx/xxx/bin

36. Device Name that is used by the system administrator to refer to a particular device by using symbolic links - stored in the /dev directory
socket()
I/O services
Logical Device Name
strace

37. Command in Linux that shows the status of loadable kernel modules that are currently loaded
df -F ufs -o i
Hardware Interface Modules
socket()
lsmod

38. Two Basic Components of ___: Superblock data structure and Group Descriptor Table
bash
Ext*
free
/proc/sys

39. Two Forms of Apache: __________ and Source (source code)
Kernel Layer
Binary (already built/compiled)
Text File
ufsboot

40. init loads from /sbin/init - reads the /etc/inittab file and executes the listed run-control scripts located in /sbin/rd*.d
Init Phase
HOME Vaiable
Process scheduling
inetd.d

41. The main configuration file for BIND
truss
/etc/named.conf
Ext* File System
init and telinit

42. Profile that all logins get before using their own ~/.profile
Apache Error Log
.profile
User to Kernel Transition Process
Boot Prom

43. Command that verifies the current run-level
SIGKILL 9
who -r
fdisk -l
Environment

44. Contains a list of entries for each user; includes a password placeholder ('x') - UID/GID - home directory - and default shell
who -r
/etc/passwd
Inode
Spawned

45. Gives UNIX/Linux users the ability to access shared resources on Windows machines by implementing CIFS
Samba
'#'
ps -elf
df

46. The main configuration file for Apache
/etc/apache/httpd.conf
Lightweight Directory Access Protocol (LDAP)
Instance Device Name
Memory Management Unit (MMU)

47. Command that displays the amount of free and used memory
pwconv
free
openldap-servers
useradd -n

48. File type also known as a folder - it contains other files and directories but will not contain actual data
Boot Prom Phase
Directory File
init and telinit
Symbolic Link - with syntax

49. Default Run Level for Linux
getty and ttymon
5 - Multi-user Mode
ufsboot
free

50. 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
Hardware Layer
shareall
Directory Entry
Kernel Layer