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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.
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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 version of Linux packaged and distributed by Red Hat.






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






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






4. 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.






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






6. A standard protocol for accessing network directories.






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






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






9. 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.






10. 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






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






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






13. In Microsoft terminology - the type of client/server network that relies on domains - rather than workgroups.






14. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Those can connect a group of nodes with a network or two networks with each other. They ma






15. On a SIP network - a server that accepts requests for location information from user agents - then queries the nearest registrar server on behalf of those user agents. If the recipient user agent is in the SIP proxy server's domain - then that server






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






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






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






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






20. 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.






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






22. A file on the hard drive that is used for virtual memory.






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






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






25. A special identifier shared by BSSs that belong to the same ESS.






26. 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.






27. The GUI environment for UNIX and Linux systems.






28. 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






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






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






31. The diffusion of a wireless signal that results from hitting an object that has smaller dimensions compared to the signal's wavelength.






32. In SIP terminology - a server that responds to user agent clients' requests for session initiation and termination.






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






34. A method of multiprocessing that splits all operations equally among two or more processors.






35. 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.






36. In Microsoft terminology - a group of interconnected computers that share each others' resources without relying on a central file server.






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






38. 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.






39. 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).






40. A file access protocol. It runs over TCP/IP and is the standard file access protocol used by Windows operating systems.






41. In IEEE terminology - a group of stations that share an access point.






42. In SIP terminology - end-user devices such as workstations - PDAs - cell phones - or IP telephones. It initiates a SIP connection.






43. A type of wireless system in which the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.






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






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






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






47. In the context of wireless networking - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.






48. An internal or externally attached adapter that converts analog telephone signals into packet-switched voice signals and vice-versa.






49. A LAN that uses wireless connections for some or all of its transmissions.






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







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