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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 service that uses the ATM network access method (and ATM cells) to transmit voice signals over a network.






2. The RAM chips installed on the computer's system board that provide dedicated memory to that computer.






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






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






5. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.






6. A telephone used for VoIP on a TCP/IP-based network.






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






8. The memory that is logically carved out of space on the hard drive and added to physical memory (RAM).






9. 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.






10. The term used to refer to a satellite that maintains a constant distance from a point on the equator at every point in its orbit.






11. 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.






12. A file system developed by Microsoft and used with its Windows NT - Windows 2000 Server - Windows Server 2003 - and Windows 2008 operating systems.






13. 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.






14. A customizable - graphical network management interface introduced with Windows Server 2003 and incorporated in Window Server 2008's Server Manager.






15. A form of filename substitution - similar to the use of wildcards in Windows and DOS.






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






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






18. 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.






19. A type of trust relationship in which two domains that belong to different NOS directory trees are configured to trust each other.






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






21. A licensing mode that allows a fixed quantity of clients to use one software package simultaneously.






22. A client or server operating system originally developed by researchers at AT&T Bell Laboratories in 1969.






23. 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






24. A type of antenna that issues wireless signals along a single direction - or path.






25. 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.






26. A service in which a video stored as an encoded file is delivered to a viewer upon his request.






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






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






29. 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






30. In the DiffServ QoS technique - a forwarding specification that allows routers to assign data streams one of several prioritization levels.






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






32. The term used to refer to the different implementations of a particular UNIX or Linux system. For example - different distributions of Linux include Fedora - SUSE - and Ubuntu.






33. 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.






34. The brand of computer central processing unit invented by Apple Computer - IBM - and Motorola - Inc. - and used in IBM servers.






35. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.






36. 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.






37. A logical receptacle for holding objects with similar characteristics or privileges in an NOS directory. Containers form the branches of the directory tree.






38. 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.






39. A routine of sequential instructions that runs until it has achieved its goal.






40. A part of the organizational structure of an operating system's directory that contains objects or other organizational units.






41. 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.






42. A logical representation of a networked printer's functionality.






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






44. On a network following the H.323 standard - any node that provides audio - visual - or data information to another node.






45. 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.






46. A well-defined - self-contained subset of a process. U






47. 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






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 method for organizing and managing objects associated with the network in the Windows Server 2003 and Server 2008 NOSs.






50. 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.