Test your basic knowledge |

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






2. A nonprofit industry association that owns the UNIX trademark.






3. A service in which television signals from broadcast or cable networks travel over packet-switched networks.






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






5. A wireless networking standard that uses FHSS (frequency hopping spread spectrum) signaling in the 2.4-GHz band to achieve a maximum throughput of either 723 Kbps or 2.1 Mbps - depending on the version. IT was designed for use primarily with small of






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






7. A proprietary NOS from Apple Computer that is based on a version of UNIX.






8. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.






9. A group of access points and associated stations (or basic service sets) connected to the same LAN.






10. 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.






11. 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.






12. 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).






13. 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.






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






15. 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






16. 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.






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






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






19. 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






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






21. In IEEE terminology - the identifier for a BSS (basic service set).






22. 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.






23. A type of satellite that orbits the Earth with an altitude between 100 and 900 miles - closer to the Earth's poles than the orbits of either GEO or MEO satellites.






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






25. A freely distributable implementation of a UNIX-type of system. Finnish computer scientist Linus Torvalds originally developed it.






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






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






28. 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.






29. 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.






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






31. 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.






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






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






34. A multiprocessing method that assigns each subtask to a specific processor.






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






36. 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.|






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






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






39. The process of moving blocks of information - called pages - between RAM and into a page file on disk.






40. 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.






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






42. The term used to describe software that is distributed with few restrictions and whose source code is freely available.






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






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






45. The technique of splitting tasks among multiple processors to expedite the completion of any single instruction.






46. A streaming video - either on demand or live - that is delivered via the Web.






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






48. A GUI tool provided with Windows Server 2008 that enables network administrators to manage server roles - features - resources - and users from a single interface.






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






50. 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