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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.
  • 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. 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.






2. The process of making a disk partition available.






3. In LDAP naming conventions - the name of an object.






4. 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






5. 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).






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






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






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






9. 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).






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






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






12. 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.






13. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.






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






15. The organization of files and directories (or folders) on a disk in which directories may contain files and other directories. When displayed graphically - this organization resembles a treelike structure.






16. 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.






17. 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.






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






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






20. A technique for ensuring QoS by prioritizing traffic.






21. A gateway that can translate IP fax data into analog fax data and vice versa.






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






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






24. In the context of Windows Server 2003 or Server 2008 - a collection of domain trees that use different namespaces. It allows for trust relationships to be established between trees.






25. A cost-savings benefit that results from organizations completing long-distance telephone calls over their packet-switched networks - thus bypassing tolls charged by common carriers on comparable PSTN calls.






26. 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






27. 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






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






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






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






31. The action of associating a disk - directory - or device with a drive letter.






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






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






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






35. An end node on a network; used most often in the context of wireless networks. transponder






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






37. 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.






38. A connection from an Earth-based transmitter to an orbiting satellite.






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






40. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.






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






42. 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.






43. In Windows Server 2003 or Server 2008 networking - the single domain from which child domains branch out in a domain tree.






44. A service in which video signals are compressed and delivered over the Internet in a continuous stream so that a user can watch and listen even before all the data has been transmitted.






45. An IEEE standard for wireless MANs. Its networks may use frequencies between 2 and 66 GHz. Their antennas may operate in a line-of-sight or non-line-of-sight manner and cover 50 kilometers (or approximately 30 miles). Its connections can achieve a ma






46. 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






47. A standard protocol for accessing network directories.






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






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






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






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