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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 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.
H.323 gateway
redirector
Samba
active scanning
2. The GUI environment for UNIX and Linux systems.
MMC (Microsoft Management Console)
X Window system
association
hot spot
3. The computer instructions written in a programming language that is readable by humans.
source code
asymmetric multiprocessing
toll bypass
BSS (basic service set)
4. 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
lpr
MGC (media gateway controller)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
narrowband
5. The signals made of electromagnetic energy that travel through the atmosphere.
MIMO (multiple input-multiple output)
wireless
inode (information node)
System V
6. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.
map
redirector
unified messaging
station
7. The IEEE standard for a wireless networking technique designed to be compatible with 802.11b while using different encoding techniques that allow it to reach a theoretical maximum capacity of 54 Mbps. It uses the 2.4-GHz frequency band.
multitasking
802.11g
AIX
MGCP (Media Gateway Control Protocol)
8. In the context of applications - a licensing mode that limits access to an application to specific users or workstations.
pipe
GUI (graphical user interface)
per seat
video-on-demand
9. The diffusion of a wireless signal that results from hitting an object that has smaller dimensions compared to the signal's wavelength.
videoconferencing
X Window system
scattering
MGCP (Media Gateway Control Protocol)
10. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).
ad hoc
Linux
H.323 terminal
802.16
11. A highly privileged user ID that has all rights to create - delete - modify - move - read - write - or execute files on a UNIX or Linux system.
root
UNIX
explicit one-way trust
branch
12. A technique for ensuring QoS by prioritizing traffic.
redirect server
DiffServ (Differentiated Service)
pipe
active scanning
13. A UNIX service responsible for printing files placed in the printer queue by the lpr command.
lpd (line printer daemon)
RTS/CTS (Request to Send/Clear to Send)
pipeline
BSD (Berkeley Software Distribution)
14. The name of the primary file system used in most Linux distributions.
account
RDN (relative distinguished name)
directional antenna
ext3
15. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.
UPN (user principal name)
domain
beacon frame
tree
16. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dialup) connection.
dial return
asymmetric multiprocessing
probe
unified messaging
17. The name given to the public software project to implement a complete - free source code implementation of UNIX. It also refers to the collection of UNIX-inspired utilities and tools that are included with Linux distributions.|
FHSS (frequency hopping spread spectrum)
symmetric multiprocessing
GNU
probe
18. An object in an operating system's directory - such as a printer or user - that does not contain other objects.
Bluetooth
Server Manager
narrowband
leaf object
19. 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.
pipe
H.245
802.16
MEO (medium Earth orbiting)
20. 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.
virtualization
SIP (Session Initiation Protocol)
toll bypass
SMB (Server Message Block)
21. In IEEE terminology - the identifier for a BSS (basic service set).
BSSID (basic service set identifier)
diffraction
ESSID (extended service set identifier)
802.16
22. 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.
Administrator
Mac OS X Server
middleware
replication
23. 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.
group
process
active scanning
RTCP (Real-time Transport Control Protocol)
24. 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).
softphone
set top box
satellite return
per seat
25. Any type of video service - including IPTV - videoconferencing - and streaming video - that delivers video signals over packet-switched networks using the TCP/IP protocol suite.
MEGACO
hierarchical file system
video over IP
iwconfig
26. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.
attribute
reflection
H.225
roaming
27. 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)
WLAN (wireless LAN)
802.11a
wireless
28. 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.
preemptive multitasking
source code
directional antenna
dial return
29. 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
multipath
LEO (low Earth orbiting)
registrar server
virtualization
30. A connection from an Earth-based transmitter to an orbiting satellite.
uplink
redirector
file access protocol
printer queue
31. The provision of telephone service over a packet-switched network running the TCP/IP protocol suite.
H.225
dial return
OU (organizational unit)
VoIP (voice over IP)
32. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.
reflection
preemptive multitasking
PowerPC
H.323 zone
33. 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.
MGC (media gateway controller)
hierarchical file system
Server Manager
802.11g
34. The real-time reception and transmission of images and audio among two or more locations.
CN (common name)
partition
videoconferencing
802.11b
35. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.
physical memory
mobile
association
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
36. A wireless signal or path that travels directly in a straight line from its transmitter to its intended receiver.
LOS (line-of-sight)
UPN (user principal name)
H.323 gatekeeper
RTS/CTS (Request to Send/Clear to Send)
37. 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.
file globbing
MCU (multipoint control unit)
site license
MEGACO
38. In the context of Windows Server 2003 or Server 2008 - a collection of domain trees that use different namespaces. It allows for trust relationships to be established between trees.
forest
IP-PBX
multipath
UPN (user principal name)
39. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.
EF (Expedited Forwarding)
workgroup
command interpreter
MCU (multipoint control unit)
40. A proprietary NOS from Apple Computer that is based on a version of UNIX.
GEO (geosynchronous orbit or geostationary orbit)
file globbing
tree
Mac OS X Server
41. A logical representation of multiple - hierarchical levels in a directory.
wireless broadband
source code
tree
BSS (basic service set)
42. A telephone switch used to connect calls within a private organization.
PBX (private branch exchange)
hierarchical file system
registrar server
proxy server
43. A program (usually text-based) that accepts and executes system programs and applications on behalf of users. Often - it includes the ability to execute a series of instructions that are stored in a file.
scattering
command interpreter
preemptive multitasking
H.323 gateway
44. The exchange of information between the components of a network or system for the purposes of establishing - monitoring - or releasing connections as well as controlling system operations.
wireless router
signaling
workgroup
ESSID (extended service set identifier)
45. A computer that manages multiple media gateways and facilitates the exchange of call control information between these gateways.
workgroup
FHSS (frequency hopping spread spectrum)
MGC (media gateway controller)
partition
46. A service in which television signals from broadcast or cable networks travel over packet-switched networks.
IPTV (IP television)
directional antenna
NFS (Network File System)
streaming video
47. A freely distributable implementation of a UNIX-type of system. Finnish computer scientist Linus Torvalds originally developed it.
station
account
Linux
Bluetooth
48. An end node on a network; used most often in the context of wireless networks. transponder
man pages (manual pages)
FHSS (frequency hopping spread spectrum)
station
domain controller
49. 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.
MIMO (multiple input-multiple output)
DC (domain component)
kernel
video-on-demand
50. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
probe
LDAP (Lightweight Directory Access Protocol)
MIMO (multiple input-multiple output)
H.245