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Comptia Network + Wireless NOS Voip

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. 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






2. 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.






3. 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.






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






5. 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.






6. 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.






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






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






9. A telephone switch used to connect calls within a private organization.






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 type of wireless LAN in which stations communicate directly with each other (rather than using an access point).






12. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.






13. 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.






14. A domain established within another domain in a Windows Server 2003 or Server 2008 domain tree.






15. 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.






16. In the DiffServ QoS technique - a forwarding specification that assigns each data stream a minimum departure rate from a given node. This technique circumvents delays that slow normal data from reaching its destination on time and in sequence.






17. 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.






18. A representation of a thing or person associated with the network that belongs in the NOS directory.






19. A type of wireless transmission in which lower-level signals are distributed over several frequencies simultaneously.






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






21. On a SIP network - a server that accepts and responds to requests from user agents and SIP proxy servers for location information on recipients that belong to external domains.






22. 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.






23. A type of permission - or right - that is passed down from one group (the parent) to a group within that group (the child).






24. 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






25. 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






26. A user account that has unlimited privileges to resources and objects managed by a server or domain.






27. A proprietary implementation of the UNIX system distributed by IBM.






28. 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.






29. An area of a computer's hard drive that is logically defined and acts as a separate disk drive.






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






31. An attribute of an object that identifies the object separately from its related container(s) and domain.






32. Another term for the UNIX command interpreter.






33. 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






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






35. A protocol used for communication between media gateway controllers and media gateways.






36. A protocol for communications and resource access between systems - such as clients and servers.






37. 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.






38. The process of making a disk partition available.






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






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






41. A record of a user that contains all of her properties - including rights to resources - password - user name - and so on.






42. A means of collectively managing users' permissions and restrictions applied to shared resources.






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






44. The action of associating a disk - directory - or device with a drive letter.






45. An access point that provides routing functions and is used as a gateway.






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






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






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






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






50. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.







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