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






2. A protocol that enables one system to access files on another system.






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






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






6. A type of antenna that issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly m






7. 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.






8. A 128-bit number generated and assigned to an object upon its creation in Active Directory.






9. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.






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






11. A version of Linux packaged and distributed by Red Hat.






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






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






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






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






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






17. The name of the primary file system used in most Linux distributions.






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






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






20. 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.






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






22. Currently - the most popular version of WiMAX. IEEE improved the mobility and QoS characteristics of the technology - making it better suited to VoIP and mobile phone users.






23. A pictorial representation of computer functions and elements that - in the case of NOSs - enables administrators to more easily manage files - users - groups - security - printers - and other issues.






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






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






26. 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






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






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






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






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






31. The centralized management of multiple types of network-based communications - such as voice - video - fax - and messaging services.






32. In the context of IPTV - a device that decodes digital video signals and issues them to the television.






33. A type of phone that includes a screen and can decode compressed video and interpret transport and signaling protocols necessary for conducting videoconference sessions.






34. A logical representation of multiple - hierarchical levels in a directory.






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






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






37. 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.






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






39. 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






40. A transmission technique in which a signal's bits are distributed over an entire frequency band at once. Each bit is coded so that the receiver can reassemble the original signal upon receiving the bits.






41. A UNIX distribution that originated at the University of California at Berkeley.






42. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.






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






44. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.






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






46. 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.






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






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






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






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







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