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Test your basic knowledge |
Unix Operating System
Start Test
Study First
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 hardware device responsible for handling memory accesses requested by the processor
sysctl
Memory Management Unit (MMU)
Logical Device Name
Lightweight Directory Access Protocol (LDAP)
2. In Solaris/Linux - the command used to mount a share from a server to a client's system
Text File
sysctl -w
useradd -n
mount -F nfs hostname:directory / <mount point>
3. File that maps IP addresses to hostnames and aliases
Kernel Layer
/etc/hosts
Superblock
df -h
4. Makes the new home directory if it does not exist
smbd
df -v
lo0
useradd -m
5. Command used to switch to a new group before creating a file that would be used by a different current group - similar to 'su'
Memory Management Unit (MMU)
Hardware Interface Modules
newgroup
LDAP Data Interchange Format (LDIF)
6. 6 Hardware Interface Module Functions: ________ - memory management - interrupt handling - low level device control - disk system management - Process synchronization & IPC
Binary
5 - Multi-user Mode
Process scheduling
/etc/group
7. Two Daemons in Samba for _____ : smbd and nmbd
nmbd
getty and ttymon
CIFS
Process scheduling
8. Command to view your swap partition in human readable format
df -h
SIGKILL 9
shareall
bash
9. The web server widely used in the public domain that was based off of a UNIX Web server
Device Names
Apache
Kernel Phase
groupadd
10. Command used to view system calls accessed during the execution of a command on Solaris systems
/etc/group
/etc/xinetd.d
System Call
truss
11. Controls the hardware that manages mapping of virtual to physical memory
Berkeley Internet Name Daemon (BIND)
Hardware Address Translation (HAT)
umask
Boot Prom
12. Command used to convert/sync information in the /etc/passwd and /etc/shadow files
pwconv
/etc/xinetd.d
useradd -D
Inode
13. Command used to delete a group
groupdel
dmesg
Trap
Instance Device Name
14. 5 Common Solaris/Linux _______: SIGHUP - SIGINT - SIGQUIT - SIGKILL - SIGTERM
free
Binary File
Kernel
Signals
15. Phase where the kernel initializes itself and begins loading modules using ufsboot. Once finished - it unmaps ufsboot
Kernel Phase
Device File
share -F nfs /<path>
getty and ttymon
16. Displays default values when adding a new user with no options
Hardware Address Translation (HAT)
start /sbin/init process
Boot-up
useradd -D
17. Hangup - restarts a daemon
prtconf
SIGHUP 1
share -F nfs /<path>
Run-level Field
18. Where master copies of the startup scripts resides
umask
/etc/init.d
df -F ufs -o i
/etc/group
19. LDAP package that contains the libraries necessary to run the Open LDAP server
Kernel Phase
kill (sig -pid)
openldap
Apache Document Root
20. Command used to create a new group
groupdel
groupadd
System Call
Boot Programs Phase
21. These are found within the kernel layer at the level closest to the hardware
free
Hardware Interface Modules
/etc/nsswitch.conf
groupadd
22. Four Ext* _________: Modify - Access - Change - Delete
File Timestamps
Character File
Shell
Binary
23. Sent by hardware when it needs the processors' attention - caused by an external event
Interrupt
Boot Prom
strace
Process States
24. Returns system information pertaining to the platform
Library Function
uname()
Hardware Address Translation (HAT)
Directory Entry
25. Displays process list with attributes
/etc/init.d
/etc/shadow
df -k
ps -elf
26. 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
sched PID of '0' -
Signals
openldap-clients
Boot Prom Phase
27. Daemon that is used to configure network services in Solaris
inetd.d
/etc/nsswitch.conf
System Call Interface
Init Phase
28. 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
User to Kernel Transition Process
Directory Entry
/etc/init.d
Berkeley Internet Name Daemon (BIND)
29. Extra permission bit that allows anyone to run a program with the same privileges as its owner or group - denoted by *
SUID/SGID
UNIX "Rings of Protection"
df -h
SIGINT 2
30. Types Two ___________: Block and Character
/etc/hosts
Device File
Interrupt
Ordinary File
31. Similar to DLLs in Windows that can be built upon and around system calls
I/O services
Library Function
df -F ufs -o i
socket()
32. Command that verifies the current run-level
Ext* File System
Kernel Layer
useradd -D
who -r
33. File where group memberships are established - inluding group names - encrypted password - GID - and users in each group
/etc/group
sysctl -p
Interrupt handlers
System call
34. Ordinary file that contains only printable characters
df
Text File
df -v
Boot Programs Phase
35. Two Types of Variables: Local and ________
Text File
Run-level Field
pwconv
Environment
36. File that inetd daemon gets it's instructions from - maintains a file format that is the same across all platforms
inetd -t
Directory File
Signals
/etc/inetd.conf
37. Command to view your swap partition
/etc/named.conf
df -k
Device
3 - Multi-User Mode
38. Terminal Interrupt via user keypress
Hard Link - with syntax
SIGINT 2
PATH=$PATH:/xxx/xxx/bin
Kernel Phase
39. Gives UNIX/Linux users the ability to access shared resources on Windows machines by implementing CIFS
Device File
/sbin/service
Samba
Boot Prom
40. Device file for devices such as floppy drive - CDROM - etc; located in the /dev/dsk directory
Binary File
/etc/apache/httpd.conf
Block File
sysctl -w
41. Applys changes to /etc/sysctl.conf
/usr/sbin/slurpd
getty and ttymon
Hard Link - with syntax
sysctl -p
42. Controls the hardware that manages mapping of virtual to physical memory
Kernel Phase
touch -m/-a
Hardware Address Translation (HAT)
Boot Prom Phase
43. In Linux - the command that controls NFS function
fdisk -l
Process scheduling
/sbin/service
sysctl -a
44. Virtual directory that provides an interface to sysctl parameters - allowing you to examine and change them
lsmod
/proc/sys
mount -F nfs hostname:directory / <mount point>
rpcinfo -p
45. A low level program that allows the kernel to communicate with the specific piece of hardware
Group Descriptor Table
openldap-servers
Device Driver
share -F nfs /<path>
46. Device Information Command that displays system diagnostic messages and a list of attached devices
dmesg
Inode
df -h
System call
47. A file that contains the name of another file - similar to a shortcut; ln -s <targetfile> <linkfile>
Directory Entry
Symbolic Link - with syntax
Six Superblock Components
Boot Prom
48. Device Information Command that displays system config info including total memory and device configuration
df -h
prtconf
df -k
df -k
49. Creates a user with default group; if not given - a new group with the user's name will be created
User Layer
useradd -n
UNIX "Rings of Protection"
newgroup
50. Two Types of _______________: Root (AKA Boot) and Swap
File System Structures
getty and ttymon
/etc/xinetd.d
Character File