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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 private switch that accepts and interprets both analog and digital voice signals (although some IP-PBXs do not accept analog lines). It can connect with both traditional PSTN lines and data networks. |
virtual memory
Server Manager
IP-PBX
H.323 gatekeeper
2. The provision of telephone service over a packet-switched network running the TCP/IP protocol suite.
MEGACO
VoIP (voice over IP)
forest
System V
3. 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).
VoDSL (voice over DSL)
802.16
spread spectrum
DN (distinguished name)
4. The type of multitasking in which tasks are actually performed one at a time - in very brief succession. One program uses the processor for a certain period of time - then is suspended to allow another program to use the processor.
thread
MIMO (multiple input-multiple output)
802.16
preemptive multitasking
5. 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.
fading
site license
Mac OS X Server
redirect server
6. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.
FoIP (fax over IP)
Bluetooth
narrowband
MMC (Microsoft Management Console)
7. A method used by wireless stations to detect the presence of an access point. The station issues a probe to each channel in its frequency range and waits for the access point to respond.
802.16
H.245
active scanning
attribute
8. 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
omnidirectional antenna
proxy server
AIX
GEO (geosynchronous orbit or geostationary orbit)
9. A streaming video - either on demand or live - that is delivered via the Web.
Webcast
leaf object
kernel
shell
10. A file on the hard drive that is used for virtual memory.
page file
file system
FoIP (fax over IP)
WLAN (wireless LAN)
11. The proprietary version of UNIX that comes from Bell Labs.
System V
FHSS (frequency hopping spread spectrum)
Samba
kernel module
12. On a network following the H.323 standard - a gateway that provides translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols (for example - SS7 on the PSTN).
BSD (Berkeley Software Distribution)
map
range
H.323 gateway
13. In Microsoft terminology - the primary purpose of a Windows Server 2008 server.
role
wireless router
802.16
man pages (manual pages)
14. A logical receptacle for holding objects with similar characteristics or privileges in an NOS directory. Containers form the branches of the directory tree.
OU (organizational unit)
per seat
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
802.16e
15. The process of moving blocks of information - called pages - between RAM and into a page file on disk.
paging
directional antenna
process
UNIX
16. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
RTS/CTS (Request to Send/Clear to Send)
MCU (multipoint control unit)
Webcast
association
17. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
range
mount
hierarchical file system
access point
18. A telephone switch used to connect calls within a private organization.
Internet telephony
GUID (globally unique identifier)
MCU (multipoint control unit)
PBX (private branch exchange)
19. In IEEE terminology - a group of stations that share an access point.
diffraction
BSS (basic service set)
middleware
softphone
20. A multiprocessing method that assigns each subtask to a specific processor.
asymmetric multiprocessing
fixed
SMB (Server Message Block)
omnidirectional antenna
21. A type of wireless transmission in which lower-level signals are distributed over several frequencies simultaneously.
wireless
SMB (Server Message Block)
spread spectrum
SSID (service set identifier)
22. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Administrator
802.11b
reassociation
OU (organizational unit)
23. A popular remote file system created by Sun Microsystems - and available for UNIX and Linux operating systems.
NFS (Network File System)
Samba
process
CN (common name)
24. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.
NFS (Network File System)
radiation pattern
H.245
Active Directory
25. In the DiffServ QoS technique - a forwarding specification that allows routers to assign data streams one of several prioritization levels.
ad hoc
LOS (line-of-sight)
AF (Assured Forwarding)
printer queue
26. A LAN that uses wireless connections for some or all of its transmissions.
WLAN (wireless LAN)
kernel
SIP (Session Initiation Protocol)
FoIP (fax over IP)
27. A wireless networking standard that uses FHSS (frequency hopping spread spectrum) signaling in the 2.4-GHz band to achieve a maximum throughput of either 723 Kbps or 2.1 Mbps - depending on the version. IT was designed for use primarily with small of
workgroup
Bluetooth
man pages (manual pages)
MGC (media gateway controller)
28. A version of Linux packaged and distributed by Red Hat.
paging
asymmetric multiprocessing
OU (organizational unit)
Fedora
29. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).
physical memory
videoconferencing
omnidirectional antenna
ad hoc
30. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.
fax gateway
The Open Group
UPN (user principal name)
domain
31. 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.
GUI (graphical user interface)
SIP (Session Initiation Protocol)
802.11a
file access protocol
32. A type of phone that includes a screen and can decode compressed video and interpret transport and signaling protocols necessary for conducting videoconference sessions.
video phone
omnidirectional antenna
reflection
lpr
33. A type of WLAN in which stations communicate with an access point and not directly with each other.
infrastructure WLAN
domain model
802.16
Bluetooth Special Interest Group (SIG)
34. A computer configured to act like an IP telephone. SS7 (Signaling System 7) | A set of standards established by the ITU for handling call signaling on the PSTN (public switched telephone network).
iwconfig
mobile
RTP (Real-time Transport Protocol)
softphone
35. In Microsoft terminology - the type of client/server network that relies on domains - rather than workgroups.
VoIP (voice over IP)
workgroup
user agent client
domain model
36. 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
Bluetooth Special Interest Group (SIG)
SIP (Session Initiation Protocol)
BSS (basic service set)
37. A small (usually home) network composed of personal communications devices.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
PAN (personal area network)
dial return
pipe
38. 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
pipe
802.11n
IP telephone
UNIX
39. A UNIX service responsible for printing files placed in the printer queue by the lpr command.
probe
tree
lpd (line printer daemon)
DN (distinguished name)
40. The brand of computer central processing unit invented by Apple Computer - IBM - and Motorola - Inc. - and used in IBM servers.
inode (information node)
channel bonding
ad hoc
PowerPC
41. An area of a computer's hard drive that is logically defined and acts as a separate disk drive.
IPTV (IP television)
proxy server
partition
streaming video
42. The description of object types - or classes - and their required and optional attributes that are stored in an NOS's directory.
AF (Assured Forwarding)
dial return
schema
registrar server
43. 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
PAN (personal area network)
registrar server
middleware
44. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.
reflection
proprietary UNIX
class
lpr
45. 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.
site survey
range
802.16e
MCU (multipoint control unit)
46. A connection from an Earth-based transmitter to an orbiting satellite.
multiprocessing
video phone
uplink
member server
47. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.
ESSID (extended service set identifier)
attribute
H.323 zone
proxy server
48. A service in which a video stored as an encoded file is delivered to a viewer upon his request.
radiation pattern
wireless broadband
video-on-demand
Fedora
49. A client/server environment that uses middleware to translate requests between the client and server.
signaling
man pages (manual pages)
ESS (extended service set)
3-tier architecture
50. A representation of a thing or person associated with the network that belongs in the NOS directory.
object
DN (distinguished name)
ATA (analog telephone adapter)
iwconfig