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






2. An area of a computer's hard drive that is logically defined and acts as a separate disk drive.






3. A telephone used for VoIP on a TCP/IP-based network.






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






5. 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






6. 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.






7. A licensing mode that allows a fixed quantity of clients to use one software package simultaneously.






8. 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.






9. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dialup) connection.






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






11. 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.






12. 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






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






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






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






16. Any type of video service - including IPTV - videoconferencing - and streaming video - that delivers video signals over packet-switched networks using the TCP/IP protocol suite.






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






18. A customizable - graphical network management interface introduced with Windows Server 2003 and incorporated in Window Server 2008's Server Manager.






19. 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.






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






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






22. 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.






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






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






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






26. 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.






27. 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






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






29. 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






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






31. The term used to refer to the different implementations of a particular UNIX or Linux system. For example - different distributions of Linux include Fedora - SUSE - and Ubuntu.






32. 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.






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






34. 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






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






36. The preferred Active Directory naming convention for objects when used in informal situations. This name looks like a familiar Internet address - including the positioning of the domain name after the @ sign.






37. The name given to the public software project to implement a complete - free source code implementation of UNIX. It also refers to the collection of UNIX-inspired utilities and tools that are included with Linux distributions.|






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






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






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






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






42. The GUI environment for UNIX and Linux systems.






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






44. 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.






45. 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).






46. A UNIX command that places files in the printer queue.






47. A routine of sequential instructions that runs until it has achieved its goal.






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






49. The IEEE standard for a wireless networking technique that uses multiple frequency bands in the 5-GHz frequency range and provides a theoretical maximum throughput of 54 Mbps.






50. 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.






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