SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Comptia Network + Wireless NOS Voip
Start Test
Study First
Subjects
:
certifications
,
comptia-network-+
,
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 type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.
FHSS (frequency hopping spread spectrum)
narrowband
downlink
Internet telephony
2. 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
MEO (medium Earth orbiting)
pipe
MIMO (multiple input-multiple output)
IPTV (IP television)
3. 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.
attribute
VoIP (voice over IP)
802.16e
Server Manager
4. A service in which video signals are compressed and delivered over the Internet in a continuous stream so that a user can watch and listen even before all the data has been transmitted.
streaming video
forest
pipeline
Solaris
5. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
middleware
Bluetooth Special Interest Group (SIG)
directory
root domain
6. A network access method used on 802.11 wireless networks. In it - before a node begins to send data it checks the medium. If it detects no transmission activity - it waits a brief - random amount of time - and then sends its transmission. If the node
802.11b
infrastructure WLAN
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
roaming
7. Another term for the UNIX command interpreter.
GUI (graphical user interface)
workgroup
AIX
shell
8. 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
802.11n
user agent server
MGCP (Media Gateway Control Protocol)
LDAP (Lightweight Directory Access Protocol)
9. On a SIP network - a server that accepts and responds to requests from user agents and SIP proxy servers for location information on recipients that belong to external domains.
MEO (medium Earth orbiting)
VoDSL (voice over DSL)
redirect server
wireless router
10. On a network following the H.323 standard - any node that provides audio - visual - or data information to another node.
account
DN (distinguished name)
H.323 terminal
active scanning
11. In LDAP naming conventions - the name of an object.
H.323 terminal
proxy server
CN (common name)
MCU (multipoint control unit)
12. A companion protocol to RTP - defined in RFC 3550 by the IETF - RTCP provides feedback on the quality of a call or videoconference to its participants.
set top box
RTCP (Real-time Transport Control Protocol)
domain model
AIX
13. A portion of the kernel that you can load and unload to add or remove functionality on a running UNIX or Linux system.
Bluetooth Special Interest Group (SIG)
BSD (Berkeley Software Distribution)
NFS (Network File System)
kernel module
14. The IEEE standard for a wireless networking technique that uses DSSS (directsequence spread spectrum) signaling in the 2.4-2.4835-GHz frequency range (also called the 2.4-GHz band). It separates the 2.4-GHz band into 14 overlapping 22-MHz channels an
802.11b
LOS (line-of-sight)
H.225
BSD (Berkeley Software Distribution)
15. A UNIX or Linux file system information storage area that holds all details about a file. This information includes the size - the access rights - the date and time of creation - and a pointer to the actual contents of the file.
site survey
streaming video
MGC (media gateway controller)
inode (information node)
16. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.
asymmetric multiprocessing
radiation pattern
role
site license
17. A cost-savings benefit that results from organizations completing long-distance telephone calls over their packet-switched networks - thus bypassing tolls charged by common carriers on comparable PSTN calls.
IP-PBX
toll bypass
preemptive multitasking
wireless spectrum
18. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.
fading
shell
H.245
GEO (geosynchronous orbit or geostationary orbit)
19. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
group
video over IP
ext3
reassociation
20. A special identifier shared by BSSs that belong to the same ESS.
SSID (service set identifier)
ESSID (extended service set identifier)
fading
IP telephone
21. A well-defined - self-contained subset of a process. U
schema
child domain
Bluetooth
thread
22. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).
WLAN (wireless LAN)
ad hoc
RDN (relative distinguished name)
video over IP
23. 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.
child domain
EF (Expedited Forwarding)
unified messaging
802.16
24. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
group
beacon frame
Bluetooth
videoconferencing
25. A Windows Server 2003 or Server 2008 computer that contains a replica of the Active Directory database.
IP telephone
access point
domain controller
proprietary UNIX
26. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.
user agent server
source code
H.323 zone
iwconfig
27. A group of access points and associated stations (or basic service sets) connected to the same LAN.
ESS (extended service set)
kernel module
RSVP (Resource Reservation Protocol)
reassociation
28. A customizable - graphical network management interface introduced with Windows Server 2003 and incorporated in Window Server 2008's Server Manager.
DN (distinguished name)
Active Directory
MMC (Microsoft Management Console)
paging
29. A type of object recognized by an NOS directory and defined in an NOS schema.
class
802.11b
radiation pattern
SIP (Session Initiation Protocol)
30. A wireless signaling technique in which a signal jumps between several different frequencies within a band in a synchronization pattern known to the channel's receiver and transmitter.
FHSS (frequency hopping spread spectrum)
DiffServ (Differentiated Service)
two-way transitive trust
set top box
31. A representation of a thing or person associated with the network that belongs in the NOS directory.
object
hierarchical file system
per user
fading
32. A means of collectively managing users' permissions and restrictions applied to shared resources.
IP-PBX
site survey
scanning
group
33. A service in which a video stored as an encoded file is delivered to a viewer upon his request.
schema
video-on-demand
thread
IP-PBX
34. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
hot spot
VoIP (voice over IP)
printer queue
Server Manager
35. An operating system's method of organizing - managing - and accessing its files through logical structures and software routines.
explicit one-way trust
fading
channel bonding
file system
36. The organization of files and directories (or folders) on a disk in which directories may contain files and other directories. When displayed graphically - this organization resembles a treelike structure.
kernel
hierarchical file system
iwconfig
Active Directory
37. A long form of an object's name in Active Directory that explicitly indicates the object name - plus the names of its containers and domains. It includes a DC (domain component) - OU (organizational unit) - and CN (common name).
DN (distinguished name)
Linux
trust relationship
softphone
38. The preferred Active Directory naming convention for objects when used in informal situations. This name looks like a familiar Internet address - including the positioning of the domain name after the @ sign.
UPN (user principal name)
reassociation
Webcast
mount
39. On a SIP network - a server that maintains a database containing information about the locations (network addresses) of each user agent in its domain. When a user agent joins a SIP network - it transmits its location information to the SIP registrar
per seat
child domain
radiation pattern
registrar server
40. The process of making a disk partition available.
Bluetooth Special Interest Group (SIG)
directory
mount
Solaris
41. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
probe
MMC (Microsoft Management Console)
asymmetric multiprocessing
source code
42. A LAN that uses wireless connections for some or all of its transmissions.
thread
WLAN (wireless LAN)
FHSS (frequency hopping spread spectrum)
multiprocessing
43. A UNIX service responsible for printing files placed in the printer queue by the lpr command.
class
H.245
lpd (line printer daemon)
The Open Group
44. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.
RDN (relative distinguished name)
thread
redirector
file system
45. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
ad hoc
MCU (multipoint control unit)
BSD (Berkeley Software Distribution)
fixed
46. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Those can connect a group of nodes with a network or two networks with each other. They ma
access point
softphone
802.11a
802.16e
47. A Session layer control protocol defined as part of ITU's H.323 multiservice network architecture. It is responsible for controlling a session between two nodes. For example - it ensures that the two nodes are communicating in the same format.
root domain
ATA (analog telephone adapter)
H.245
hot spot
48. A type of antenna that issues wireless signals along a single direction - or path.
H.323 gateway
CN (common name)
directional antenna
branch
49. A licensing mode that allows a fixed quantity of clients to use one software package simultaneously.
scanning
set top box
NFS (Network File System)
per user
50. In Microsoft terminology - the primary purpose of a Windows Server 2008 server.
H.323 terminal
RSVP (Resource Reservation Protocol)
file system
role