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Test your basic knowledge |
Comptia Network + Wireless NOS Voip
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Subjects
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certifications
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comptia-network-+
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it-skills
Instructions:
Answer 50 questions in 15 minutes.
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study here
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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 group of hierarchically arranged domains that share a common namespace in the Windows Server 2003 or Server 2008 Active Directory.
dial return
domain tree
VoATM (voice over ATM)
802.16
2. A protocol that enables one system to access files on another system.
MEGACO
SPARC
file access protocol
The Open Group
3. A type of satellite that orbits the Earth roughly 6000 to 12 -000 miles above its surface - positioned between the equator and the poles. These satellites can cover a larger area of the Earth's surface than LEO satellites while using less power and c
replication
kernel module
multiprocessing
MEO (medium Earth orbiting)
4. A type of wireless transmission in which lower-level signals are distributed over several frequencies simultaneously.
spread spectrum
wireless spectrum
pipeline
H.323 gatekeeper
5. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
MEO (medium Earth orbiting)
MCU (multipoint control unit)
redirector
Samba
6. A type of antenna that issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly m
softphone
site license
omnidirectional antenna
man pages (manual pages)
7. The process of copying Active Directory data to multiple domain controllers. This ensures redundancy so that in case one of the domain controllers fails - clients can still log on to the network - be authenticated - and access resources.
asymmetric multiprocessing
set top box
beacon frame
replication
8. A 128-bit number generated and assigned to an object upon its creation in Active Directory.
GUID (globally unique identifier)
paging
pipe
root
9. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.
wireless spectrum
station
man pages (manual pages)
pipe
10. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
beacon frame
virtualization
tree
CN (common name)
11. A version of Linux packaged and distributed by Red Hat.
replication
Fedora
802.16
source code
12. A type of object recognized by an NOS directory and defined in an NOS schema.
reassociation
H.323
MMC (Microsoft Management Console)
class
13. In LDAP naming conventions - the name of any one of the domains to which an object belongs.
UNIX
omnidirectional antenna
DC (domain component)
MGCP (Media Gateway Control Protocol)
14. On a network following the H.323 standard - any node that provides audio - visual - or data information to another node.
H.323 terminal
EF (Expedited Forwarding)
domain model
diffraction
15. A protocol for communications and resource access between systems - such as clients and servers.
wireless gateway
unified messaging
NTFS (New Technology File System)
SMB (Server Message Block)
16. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
roaming
Fedora
command interpreter
softphone
17. The name of the primary file system used in most Linux distributions.
uplink
ext3
satellite return
UPN (user principal name)
18. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.
per seat
BSD (Berkeley Software Distribution)
reflection
IP-PBX
19. An open source software package that provides complete Windows-style file- and printer-sharing capabilities.
GNU
Samba
VoATM (voice over ATM)
802.11n
20. An exchange in which a wireless station requests the exclusive right to communicate with an access point and the access point confirms that it has granted that request.
mobile
hot spot
access point
RTS/CTS (Request to Send/Clear to Send)
21. A series of two or more commands in which the output of prior commands is sent to the input of subsequent commands.
process
RTP (Real-time Transport Protocol)
multiprocessing
pipeline
22. Currently - the most popular version of WiMAX. IEEE improved the mobility and QoS characteristics of the technology - making it better suited to VoIP and mobile phone users.
VoATM (voice over ATM)
802.16e
802.11n
IP-PBX
23. A pictorial representation of computer functions and elements that - in the case of NOSs - enables administrators to more easily manage files - users - groups - security - printers - and other issues.
schema
GUI (graphical user interface)
association
GEO (geosynchronous orbit or geostationary orbit)
24. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
role
H.245
spread spectrum
iwconfig
25. A nonprofit industry association that owns the UNIX trademark.
The Open Group
Solaris
shell
Linux
26. A Session layer call signaling protocol defined as part of ITU's H.323 multiservice network architecture. It is responsible for call or videoconference setup between nodes on a VoIP or video-over-IP network - indicating node status - requesting addit
H.225
UPN (user principal name)
radiation pattern
workgroup
27. A type of WLAN in which stations communicate with an access point and not directly with each other.
video phone
infrastructure WLAN
fading
reassociation
28. The description of object types - or classes - and their required and optional attributes that are stored in an NOS's directory.
schema
satellite return
range
wireless broadband
29. A client or server operating system originally developed by researchers at AT&T Bell Laboratories in 1969.
narrowband
LDAP (Lightweight Directory Access Protocol)
domain
UNIX
30. A service that relies on a DSL connection to transmit packetized voice signals.
video over IP
LDAP (Lightweight Directory Access Protocol)
replication
VoDSL (voice over DSL)
31. The centralized management of multiple types of network-based communications - such as voice - video - fax - and messaging services.
proxy server
MMC (Microsoft Management Console)
802.11n
unified messaging
32. In the context of IPTV - a device that decodes digital video signals and issues them to the television.
multiprocessing
wireless router
set top box
802.16
33. A type of phone that includes a screen and can decode compressed video and interpret transport and signaling protocols necessary for conducting videoconference sessions.
X Window system
multipath
proprietary UNIX
video phone
34. A logical representation of multiple - hierarchical levels in a directory.
tree
user agent client
AF (Assured Forwarding)
multiprocessing
35. A representation of a thing or person associated with the network that belongs in the NOS directory.
object
scanning
PAN (personal area network)
Internet telephony
36. A means of collectively managing users' permissions and restrictions applied to shared resources.
signaling
per user
group
The Open Group
37. In the DiffServ QoS technique - a forwarding specification that assigns each data stream a minimum departure rate from a given node. This technique circumvents delays that slow normal data from reaching its destination on time and in sequence.
H.323 gatekeeper
IP-PBX
EF (Expedited Forwarding)
inherited
38. A type of antenna that issues wireless signals along a single direction - or path.
FHSS (frequency hopping spread spectrum)
hot spot
LDAP (Lightweight Directory Access Protocol)
directional antenna
39. The IEEE standard for a wireless networking technique that may issue signals in the 2.4- or 5-GHz band and can achieve actual data throughput between 65 and 600 Mbps. It accomplishes this through several means - including MIMO - channel bonding - and
two-way transitive trust
802.11n
OU (organizational unit)
PBX (private branch exchange)
40. A transmission technique in which a signal's bits are distributed over an entire frequency band at once. Each bit is coded so that the receiver can reassemble the original signal upon receiving the bits.
class
H.323
DSSS (direct-sequence spread spectrum)
multiprocessing
41. A UNIX distribution that originated at the University of California at Berkeley.
Bluetooth Special Interest Group (SIG)
BSD (Berkeley Software Distribution)
Linux
fading
42. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.
H.323
H.323 zone
forest
RTP (Real-time Transport Protocol)
43. A proprietary implementation of the UNIX operating system by Sun Microsystems.
tree
domain tree
Solaris
IP-PBX
44. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
file system
Bluetooth Special Interest Group (SIG)
Internet telephony
schema
45. A portion of the kernel that you can load and unload to add or remove functionality on a running UNIX or Linux system.
kernel module
map
H.245
NTFS (New Technology File System)
46. A type of satellite that orbits the Earth with an altitude between 100 and 900 miles - closer to the Earth's poles than the orbits of either GEO or MEO satellites.
user agent client
LEO (low Earth orbiting)
partition
group
47. A proprietary NOS from Apple Computer that is based on a version of UNIX.
Bluetooth Special Interest Group (SIG)
replication
CN (common name)
Mac OS X Server
48. A logical representation of a networked printer's functionality.
explicit one-way trust
H.245
trust relationship
printer queue
49. The method for organizing and managing objects associated with the network in the Windows Server 2003 and Server 2008 NOSs.
DSSS (direct-sequence spread spectrum)
Active Directory
MEGACO
hot spot
50. A service in which television signals from broadcast or cable networks travel over packet-switched networks.
middleware
IPTV (IP television)
Linux
MGC (media gateway controller)
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