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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 proprietary implementation of the UNIX operating system by Sun Microsystems.






2. In the context of 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5






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






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






5. 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.






6. In Microsoft terminology - the primary purpose of a Windows Server 2008 server.






7. The type of multitasking in which tasks are actually performed one at a time - in very brief succession. One program uses the processor for a certain period of time - then is suspended to allow another program to use the processor.






8. The term used to describe the recently released standards for highthroughput - long-distance digital data exchange over wireless connections.






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






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






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






12. 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.






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






14. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.






15. An operating system's method of organizing - managing - and accessing its files through logical structures and software routines.






16. 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.






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






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






19. 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.






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






21. 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






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






23. The proprietary version of UNIX that comes from Bell Labs.






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






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






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






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






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






29. The real-time reception and transmission of images and audio among two or more locations.






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






31. 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.






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






33. On a network following the H.323 standard - a gateway that provides translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols (for example - SS7 on the PSTN).






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






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






36. 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






37. 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






38. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.






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






40. A program (usually text-based) that accepts and executes system programs and applications on behalf of users. Often - it includes the ability to execute a series of instructions that are stored in a file.






41. A private switch that accepts and interprets both analog and digital voice signals (although some IP-PBXs do not accept analog lines). It can connect with both traditional PSTN lines and data networks. |






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






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






44. 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






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






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






47. A well-defined - self-contained subset of a process. U






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






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






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






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