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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. 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.






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






3. Any implementation of UNIX for which the source code is either unavailable or available only by purchasing a licensed copy from Novell (costing as much as millions of dollars).






4. 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.






5. A file on the hard drive that is used for virtual memory.






6. The computer instructions written in a programming language that is readable by humans.






7. 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.






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






9. 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.






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






11. 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.






12. 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.






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






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






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






16. 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.






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






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






19. Another term for the UNIX command interpreter.






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






21. A domain established within another domain in a Windows Server 2003 or Server 2008 domain tree.






22. 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






23. 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.






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






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






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






27. A protocol used for communication between media gateway controllers and media gateways.






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






29. 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.






30. A type of software license that - for a fixed price - allows any number of users in one location to legally access a program.






31. 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






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






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






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






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






36. 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.






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






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






39. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.






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






41. 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.






42. 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






43. The process of making a disk partition available.






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






45. 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






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






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






48. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.






49. 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






50. The complete database of hierarchical names (including host and domain names) used to resolve IP addresses with their hosts.







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