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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. 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






2. 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.






3. 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






4. 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.






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






6. An ITU standard that describes an architecture and a suite of protocols for establishing and managing multimedia services sessions on a packet-switched network.






7. 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.






8. The description of object types - or classes - and their required and optional attributes that are stored in an NOS's directory.






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






10. 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.






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






12. A popular remote file system created by Sun Microsystems - and available for UNIX and Linux operating systems.






13. The signals made of electromagnetic energy that travel through the atmosphere.






14. A portion of the kernel that you can load and unload to add or remove functionality on a running UNIX or Linux system.






15. An open source software package that provides complete Windows-style file- and printer-sharing capabilities.






16. 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






17. A character that enables you to combine existing commands to form new commands.






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






19. 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






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






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






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






23. 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






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






25. 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.






26. 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.






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






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






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






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






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






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






33. The provision of telephone service over the Internet.






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






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






36. A method used by wireless stations to detect the presence of an access point. The station issues a probe to each channel in its frequency range and waits for the access point to respond.






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






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






39. 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.






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






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






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






43. 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






44. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.






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






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






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






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






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






50. A type of satellite Internet access service in which a subscriber sends and receives data to and from the Internet over the satellite link. This is a symmetrical technology - in which both upstream and downstream throughputs are advertised to reach 4