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. File that specifies machines to use for name resolution
UNIX "Rings of Protection"
/etc/resolv.conf
kill (sig -pid)
Kernel

2. Programs similar to GINA in Windows that provides the login prompt
sysctl -w
getty and ttymon
Apache Error Log
Run-level Field

3. Where Apache keeps it's essential files - stored in /var/apache
Logical Device Name
'#'
Apache Server Root
System Call Interface

4. Polls the /etc/inittab file after it has been modified
CIFS
Device File
telinit -q
pwconv

5. Command to view your swap partition in human readable format
id
telinit -q
df -h
Device Names

6. Used to describe the layout of block groups
Group Descriptor Table
Apache Error Log
Device Driver
Environment

7. '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+)
System Call Interface
sysctl -a
Hardware Layer

8. Two Servers in openldap-servers: /usr/sbin/slapd and ________
ufsboot
/usr/sbin/slurpd
openldap
showmount -e <ip address>

9. Three Steps of Kernel Phase: Create a user process - __________ - and starts other processes by reading /etc/inittab
Inode
start /sbin/init process
openldap-clients
/etc/named.conf

10. located 1024 bytes from the start of the file system and is 1024 bytes in size
inetd.d
Superblock
Device File
who -r

11. 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
Kernel Phase
/etc/resolv.conf
Directory Entry
ps -elf

12. Default Run Level for Linux
df -k
5 - Multi-user Mode
getty and ttymon
Interrupt handlers

13. In Solaris - the daemon required to use NFS
ps -elf
Hardware Address Translation (HAT)
/etc/inid/nfs.client
System call

14. Command used to convert/sync information in the /etc/passwd and /etc/shadow files
unlink()
pwconv
SIGHUP 1
uname()

15. Command in Solaris that lists the modules that are currently loaded
/proc/sys
pwconv
Character File
modinfo

16. Command used to view system calls accessed during the execution of a command on Solaris systems
Hardware Address Translation (HAT)
truss
id
User Layer

17. Daemon that is used for viewing network services in Linux - has more customization than the Solaris counterpart
shareall
User Layer
/etc/xinetd.d
Six Superblock Components

18. Extra permission bit that allows anyone to run a program with the same privileges as its owner or group - denoted by *
SIGHUP 1
SUID/SGID
Text File
Device File

19. Secondary boot program that locates and load the basic kernel
ufsboot
inetd -t
SIGINT 2
getty and ttymon

20. Device Information Command that displays system config info including total memory and device configuration
Device File
/etc/passwd
prtconf
/etc/inetd.conf

21. Displays default values when adding a new user with no options
useradd -D
strace
Directory Entry
df

22. These are found within the kernel layer at the level closest to the hardware
Binary (already built/compiled)
Hardware Interface Modules
Trap
Instance Device Name

23. Command used on a Linux system to view the disk's physical partitioning scheme
Process States
fdisk -l
useradd -D
openldap

24. Profile that all logins get before using their own ~/.profile
sched PID of '0' -
.profile
lsmod
/etc/inetd.conf

25. Ordinary file that contains both printable and non-printable characters - ex - most UNIX executables
Spawned
/etc/services
File System
Binary File

26. 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
Ext* File System
Kernel Layer
/etc/shadow
Process scheduling

27. Software interrupt that's processed immediately that's generated by a currently running process
Hardware Layer
df
/etc/apache/httpd.conf
Trap

28. Command in Linux that provides an interface to allow you to examine and change parameters in /proc/sys
sysctl
.profile
PATH=$PATH:/xxx/xxx/bin
Network File System (NFS)

29. Polls the /etc/inittab file after it has been modified
/etc/inetd.conf
Memory Management Unit (MMU)
telinit -q
before /etc/profile

30. 4 Kernel Components: __________ - process scheduler - memory management - and system services
Interrupt handlers
init and telinit
SIGINT 2
Network File System (NFS)

31. Returns system information pertaining to the platform
rpcinfo -p
Process scheduling
shareall
uname()

32. The command to report file system disk space usage
groupdel
5 - Multi-user Mode
df
User Layer

33. Four Ext* _________: Modify - Access - Change - Delete
File Timestamps
Hardware Address Translation (HAT)
who -r
Logical Device Name

34. Similar to -k; shows block size for each mounted file system
Low level file I/O
socket()
df -v
5 - Multi-user Mode

35. O - Running - R - Can be Executed - (S)leeping - (Z)ombie - T - Stopped
socket()
Process States
.profile
nmbd

36. Command to view your swap partition in human readable format
init and telinit
df -h
UNIX "Rings of Protection"
Kernel Layer

37. The core of the operating system that is loaded into memory at system boot; it manages the hardware and performs system services
Hardware Interface Modules
Data Block
Kernel
Binary File

38. Lists the block on the disc where the data is stored - usually has a fixed size
lsmod
sched PID of '0' -
Directory File
Inode Table of Contents

39. The hardware device responsible for handling memory accesses requested by the processor
Environment
Directory Entry
Interrupt handlers
Memory Management Unit (MMU)

40. Command that verifies the current run-level
free
who -r
Binary (already built/compiled)
SIGINT 2

41. Command used to view RPC services and their appropriate ports
Environment
rpcinfo -p
unlink()
useradd -D

42. File that controls how hostnames are resolved system-wide
touch -m/-a
/etc/nsswitch.conf
strace
Low level file I/O

43. Terminal Interrupt via user keypress
LDAP Data Interchange Format (LDIF)
3 - Multi-User Mode
Apache Directory Structure
SIGINT 2

44. These are found within the kernel layer at the level closest to the hardware
Text File
Hardware Interface Modules
sysdef
sysctl

45. This Layer includes hardware such as CPU - system memory - the terminal - disks - CD-ROM - and NIC
Hardware Layer
Hardware Address Translation (HAT)
ufsboot
/etc/init.d

46. Three Main Areas of ________________: Server Root - Document Root - Default Error Log
Apache Directory Structure
Text File
kill (sig -pid)
sched PID of '0' -

47. The core of the operating system that is loaded into memory at system boot; it manages the hardware and performs system services
Signals
ROOT Account
Kernel
Hardware Address Translation (HAT)

48. Four Phases of the Solaris Boot Process: _______ - Boot Programs - Kernel - and Init
df -k
Boot Prom
prtconf
.profile

49. This file type contains only data as a stream of characters - also known as a regular file
Binary File
Boot-up
Boot Programs Phase
Ordinary File

50. 5 Common Solaris/Linux _______: SIGHUP - SIGINT - SIGQUIT - SIGKILL - SIGTERM
Shell
File System
Boot Programs Phase
Signals