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Comptia Network + Wireless NOS Voip

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 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.






2. 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.






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).






4. 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. |






5. A small (usually home) network composed of personal communications devices.






6. 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.






7. The provision of telephone service over a packet-switched network running the TCP/IP protocol suite.






8. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.






9. A continuum of electromagnetic waves used for data and voice






10. 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






11. The characteristic of wireless signals that follow a number of different paths to their destination (for example - because of reflection - diffraction - and scattering).






12. A type of WLAN in which stations communicate with an access point and not directly with each other.






13. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.






14. A computer that manages multiple media gateways and facilitates the exchange of call control information between these gateways.






15. The real-time reception and transmission of images and audio among two or more locations.






16. A service that relies on a DSL connection to transmit packetized voice signals.






17. A client/server environment that uses middleware to translate requests between the client and server.






18. In the context of applications - a licensing mode that limits access to an application to specific users or workstations.






19. A type of wireless system in which the locations of the transmitter and receiver are static.






20. 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).






21. The process a wireless station undergoes to find an access point.






22. A unique character string used to identify an access point on an 802.11 network.






23. A type of object recognized by an NOS directory and defined in an NOS schema.






24. A proprietary implementation of the UNIX operating system by Sun Microsystems.






25. A group of hierarchically arranged domains that share a common namespace in the Windows Server 2003 or Server 2008 Active Directory.






26. 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.






27. In LDAP naming conventions - the name of any one of the domains to which an object belongs.






28. A type of server on a Windows Server 2003 or Server 2008 network that does not hold directory information and - therefore - cannot authenticate users.






29. A connection from an Earth-based transmitter to an orbiting satellite.






30. 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).






31. A connection from an orbiting satellite to an Earth-based receiver.






32. 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.






33. 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.






34. An object in an operating system's directory - such as a printer or user - that does not contain other objects.






35. An access point that provides routing functions.






36. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.






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.






38. The ability of a processor to perform multiple activities in a brief period of time (often seeming simultaneous to the user






39. A series of two or more commands in which the output of prior commands is sent to the input of subsequent commands.






40. A Windows Server 2003 or Server 2008 computer that contains a replica of the Active Directory database.






41. 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.






42. 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






43. A service that transmits faxes over a TCP/IP network.






44. The proprietary version of UNIX that comes from Bell Labs.






45. In general - a listing that organizes resources and correlates them with their properties. In the context of NOSs - a method for organizing and managing objects.






46. In Microsoft terminology - the primary purpose of a Windows Server 2008 server.






47. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.






48. A Transport layer protocol used with voice and video transmission. It operates on top of UDP and provides information about packet sequence to help receiving nodes detect delay and packet loss. It also assigns packets a timestamp that corresponds to






49. The name of the primary file system used in most Linux distributions.






50. A technique for ensuring QoS by prioritizing traffic.







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