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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 type of wireless system in which the locations of the transmitter and receiver are static.
file system
omnidirectional antenna
fixed
narrowband
2. The GUI environment for UNIX and Linux systems.
X Window system
child domain
IPTV (IP television)
video over IP
3. A type of object recognized by an NOS directory and defined in an NOS schema.
site survey
user agent client
domain model
class
4. A form of filename substitution - similar to the use of wildcards in Windows and DOS.
file globbing
namespace
IP-PBX
MEGACO
5. A protocol used between media gateway controllers and media gateways. It is poised to replace MGCP on modern converged networks - as it supports a broader range of network technologies - including ATM. Also known as H.248.
account
MEGACO
mobile
System V
6. As specified in RFC 2205 - a QoS technique that attempts to reserve a specific amount of network resources for a transmission before the transmission occurs.
RSVP (Resource Reservation Protocol)
RTS/CTS (Request to Send/Clear to Send)
H.245
MEO (medium Earth orbiting)
7. 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.
kernel
LEO (low Earth orbiting)
proprietary UNIX
RTP (Real-time Transport Protocol)
8. A type of satellite Internet access service in which a subscriber sends and receives data to and from the Internet over the satellite link. This is a symmetrical technology - in which both upstream and downstream throughputs are advertised to reach 4
FHSS (frequency hopping spread spectrum)
pipeline
account
satellite return
9. A unique character string used to identify an access point on an 802.11 network.
thread
fax gateway
hierarchical file system
SSID (service set identifier)
10. A multiprocessing method that assigns each subtask to a specific processor.
streaming video
asymmetric multiprocessing
pipeline
Webcast
11. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
X Window system
MCU (multipoint control unit)
member server
802.11b
12. 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
explicit one-way trust
802.11n
videoconferencing
preemptive multitasking
13. A small (usually home) network composed of personal communications devices.
X Window system
AF (Assured Forwarding)
uplink
PAN (personal area network)
14. 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.
hierarchical file system
Webcast
ext3
physical memory
15. In the context of IPTV - a device that decodes digital video signals and issues them to the television.
set top box
radiation pattern
RTS/CTS (Request to Send/Clear to Send)
diffraction
16. 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
class
virtual memory
proxy server
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
17. The software that sits between the client and server in a 3-tier architecture.
Solaris
partition
middleware
schema
18. 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.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
child domain
replication
RTCP (Real-time Transport Control Protocol)
19. A proprietary implementation of the UNIX operating system by Sun Microsystems.
NFS (Network File System)
Solaris
H.323 gatekeeper
wireless spectrum
20. The process of moving blocks of information - called pages - between RAM and into a page file on disk.
proprietary UNIX
paging
satellite return
MCU (multipoint control unit)
21. An access point that provides routing functions and is used as a gateway.
wireless gateway
softphone
scanning
PBX (private branch exchange)
22. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
reassociation
RTCP (Real-time Transport Control Protocol)
iwconfig
root
23. 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
X Window system
proxy server
man pages (manual pages)
24. The core of a UNIX or Linux system. This part of the operating system is loaded and run when you turn on your computer. It mediates between user programs and the computer hardware.
CN (common name)
kernel
per seat
page file
25. In the context of 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5
DSSS (direct-sequence spread spectrum)
wireless broadband
RDN (relative distinguished name)
channel bonding
26. The term used to describe software that is distributed with few restrictions and whose source code is freely available.
wireless
open source software
multiprocessing
roaming
27. A service in which a video stored as an encoded file is delivered to a viewer upon his request.
The Open Group
802.11b
LOS (line-of-sight)
video-on-demand
28. 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.
access point
802.11a
FHSS (frequency hopping spread spectrum)
Active Directory
29. 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.
802.11n
video phone
preemptive multitasking
hot spot
30. 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
branch
asymmetric multiprocessing
MEO (medium Earth orbiting)
scattering
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.
ESSID (extended service set identifier)
GUI (graphical user interface)
site survey
virtual memory
32. 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).
System V
infrastructure WLAN
DN (distinguished name)
directory
33. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.
UNIX
GNU
radiation pattern
reassociation
34. A type of WLAN in which stations communicate with an access point and not directly with each other.
infrastructure WLAN
ESSID (extended service set identifier)
wireless spectrum
proprietary UNIX
35. A type of phone that includes a screen and can decode compressed video and interpret transport and signaling protocols necessary for conducting videoconference sessions.
child domain
LOS (line-of-sight)
video phone
802.16e
36. A routine of sequential instructions that runs until it has achieved its goal.
video over IP
process
distribution
Administrator
37. A record of a user that contains all of her properties - including rights to resources - password - user name - and so on.
MIMO (multiple input-multiple output)
iwconfig
per seat
account
38. 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).
softphone
H.323 gateway
DiffServ (Differentiated Service)
PAN (personal area network)
39. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.
NFS (Network File System)
user agent client
MEGACO
narrowband
40. In the DiffServ QoS technique - a forwarding specification that allows routers to assign data streams one of several prioritization levels.
redirector
AF (Assured Forwarding)
group
SIP (Session Initiation Protocol)
41. The characteristic of wireless signals that follow a number of different paths to their destination (for example - because of reflection - diffraction - and scattering).
explicit one-way trust
ESSID (extended service set identifier)
FHSS (frequency hopping spread spectrum)
multipath
42. A series of two or more commands in which the output of prior commands is sent to the input of subsequent commands.
MEO (medium Earth orbiting)
VoIP (voice over IP)
registrar server
pipeline
43. 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.
RTS/CTS (Request to Send/Clear to Send)
domain tree
station
class
44. 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
802.16e
ESS (extended service set)
IP telephone
45. A variable property associated with a network object. For example - a restriction on the time of day a user can log on is an attribute associated with that user object.
wireless router
attribute
probe
lpd (line printer daemon)
46. In the context of 802.11n wireless networking - the ability for access points to issue multiple signals to stations - thereby multiplying the signal's strength and increasing their range and data-carrying capacity.
proprietary UNIX
MIMO (multiple input-multiple output)
mobile
roaming
47. The term used to describe the recently released standards for highthroughput - long-distance digital data exchange over wireless connections.
signaling
wireless broadband
802.11n
UNIX
48. 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).
VoIP (voice over IP)
softphone
file access protocol
DN (distinguished name)
49. A type of trust relationship in which two domains that belong to different NOS directory trees are configured to trust each other.
branch
lpd (line printer daemon)
signaling
explicit one-way trust
50. 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
The Open Group
proxy server
association