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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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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 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.
H.245
MGC (media gateway controller)
process
AF (Assured Forwarding)
2. 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.
inode (information node)
middleware
multipath
uplink
3. A proprietary implementation of the UNIX system distributed by IBM.
dial return
roaming
AIX
kernel
4. In the context of wireless signal propagation - the phenomenon that occurs when an electromagnetic wave encounters an obstruction and splits into secondary waves. The secondary waves continue to propagate in the direction in which they were split. Th
asymmetric multiprocessing
scanning
video-on-demand
diffraction
5. A computer that manages multiple media gateways and facilitates the exchange of call control information between these gateways.
MGC (media gateway controller)
DN (distinguished name)
reassociation
virtual memory
6. The capability for operating multiple logical servers
probe
BSD (Berkeley Software Distribution)
DSSS (direct-sequence spread spectrum)
virtualization
7. The process a wireless station undergoes to find an access point.
scanning
object
map
wireless spectrum
8. The diffusion of a wireless signal that results from hitting an object that has smaller dimensions compared to the signal's wavelength.
group
scattering
beacon frame
user agent server
9. The centralized management of multiple types of network-based communications - such as voice - video - fax - and messaging services.
video phone
file system
unified messaging
hierarchical file system
10. 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
ext3
wireless
802.11n
H.323
11. In the DiffServ QoS technique - a forwarding specification that allows routers to assign data streams one of several prioritization levels.
video-on-demand
WLAN (wireless LAN)
AF (Assured Forwarding)
proprietary UNIX
12. The nerve center for networks that adhere to H.323. IT authorize and authenticate terminals and gateways - manage bandwidth - and oversee call routing - accounting - and billing.
asymmetric multiprocessing
PBX (private branch exchange)
H.323 gatekeeper
namespace
13. A part of the organizational structure of an operating system's directory that contains objects or other organizational units.
range
AF (Assured Forwarding)
branch
Administrator
14. 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.
registrar server
channel bonding
replication
FHSS (frequency hopping spread spectrum)
15. The security relationship between domains in the same domain tree in which one domain grants every other domain in the tree access to its resources and - in turn - that domain can access other domains' resources.
unified messaging
two-way transitive trust
FoIP (fax over IP)
GUI (graphical user interface)
16. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.
open source software
802.11n
site survey
radiation pattern
17. In the context of wireless networking - an assessment of client requirements - facility characteristics - and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.
PBX (private branch exchange)
softphone
site survey
uplink
18. In the context of IPTV - a device that decodes digital video signals and issues them to the television.
set top box
WLAN (wireless LAN)
X Window system
System V
19. The IEEE standard for a wireless networking technique that uses multiple frequency bands in the 5-GHz frequency range and provides a theoretical maximum throughput of 54 Mbps.
middleware
file access protocol
802.11a
MGC (media gateway controller)
20. A proprietary NOS from Apple Computer that is based on a version of UNIX.
Mac OS X Server
infrastructure WLAN
streaming video
VoDSL (voice over DSL)
21. The term used to describe software that is distributed with few restrictions and whose source code is freely available.
802.16
open source software
802.11b
H.323
22. A protocol suite codified by the IETF (in RFC 2543) as a set of Session layer signaling and control protocols for multiservice - packet-based networks.
SIP (Session Initiation Protocol)
LEO (low Earth orbiting)
wireless gateway
domain
23. A service that transmits faxes over a TCP/IP network.
process
probe
per seat
FoIP (fax over IP)
24. In the context of applications - a licensing mode that limits access to an application to specific users or workstations.
process
per seat
ESS (extended service set)
RDN (relative distinguished name)
25. A wireless signal or path that travels directly in a straight line from its transmitter to its intended receiver.
omnidirectional antenna
LOS (line-of-sight)
H.245
UNIX
26. In LDAP naming conventions - the name of an object.
CN (common name)
RTP (Real-time Transport Protocol)
per user
BSS (basic service set)
27. A telephone used for VoIP on a TCP/IP-based network.
inherited
Internet telephony
IP telephone
set top box
28. An operating system's method of organizing - managing - and accessing its files through logical structures and software routines.
partition
set top box
file system
uplink
29. 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.
inherited
domain controller
domain
UPN (user principal name)
30. The proprietary version of UNIX that comes from Bell Labs.
System V
AIX
class
LEO (low Earth orbiting)
31. 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.
passive scanning
Administrator
RTCP (Real-time Transport Control Protocol)
replication
32. A routine of sequential instructions that runs until it has achieved its goal.
fixed
process
CN (common name)
Mac OS X Server
33. A GUI tool provided with Windows Server 2008 that enables network administrators to manage server roles - features - resources - and users from a single interface.
partition
MMC (Microsoft Management Console)
GEO (geosynchronous orbit or geostationary orbit)
Server Manager
34. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
two-way transitive trust
RDN (relative distinguished name)
range
GEO (geosynchronous orbit or geostationary orbit)
35. The GUI environment for UNIX and Linux systems.
BSD (Berkeley Software Distribution)
802.11b
process
X Window system
36. 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
directory
MEO (medium Earth orbiting)
EF (Expedited Forwarding)
37. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.
omnidirectional antenna
reflection
downlink
replication
38. A freely distributable implementation of a UNIX-type of system. Finnish computer scientist Linus Torvalds originally developed it.
child domain
BSD (Berkeley Software Distribution)
omnidirectional antenna
Linux
39. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.
redirector
ad hoc
virtual memory
tree
40. A file access protocol. It runs over TCP/IP and is the standard file access protocol used by Windows operating systems.
H.323 terminal
kernel
leaf object
CIFS (Common Internet File System)
41. 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.
streaming video
mobile
asymmetric multiprocessing
RTCP (Real-time Transport Control Protocol)
42. A logical representation of a networked printer's functionality.
SIP (Session Initiation Protocol)
FHSS (frequency hopping spread spectrum)
redirect server
printer queue
43. Any implementation of UNIX for which the source code is either unavailable or available only by purchasing a licensed copy from Novell (costing as much as millions of dollars).
802.11g
802.16e
proprietary UNIX
IPTV (IP television)
44. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
MCU (multipoint control unit)
802.16e
range
DN (distinguished name)
45. 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
The Open Group
set top box
Bluetooth
46. A protocol that enables one system to access files on another system.
file access protocol
uplink
paging
pipeline
47. 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.
IP-PBX
source code
DSSS (direct-sequence spread spectrum)
X Window system
48. The term used to describe the recently released standards for highthroughput - long-distance digital data exchange over wireless connections.
wireless broadband
802.16
thread
role
49. An ITU standard that describes an architecture and a suite of protocols for establishing and managing multimedia services sessions on a packet-switched network.
VoIP (voice over IP)
H.323
file system
DN (distinguished name)
50. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
ATA (analog telephone adapter)
H.323 gateway
range
roaming
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