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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 highly privileged user ID that has all rights to create - delete - modify - move - read - write - or execute files on a UNIX or Linux system.






2. 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.






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






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






5. A logical receptacle for holding objects with similar characteristics or privileges in an NOS directory. Containers form the branches of the directory tree.






6. A form of filename substitution - similar to the use of wildcards in Windows and DOS.






7. Another term for the UNIX command interpreter.






8. An access point that provides routing functions.






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






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






11. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).






12. A multiprocessing method that assigns each subtask to a specific processor.






13. The process a wireless station undergoes to find an access point.






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






15. 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).






16. The capability for operating multiple logical servers






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






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






19. 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.






20. 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






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






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






23. A wireless signaling technique in which a signal jumps between several different frequencies within a band in a synchronization pattern known to the channel's receiver and transmitter.






24. In the context of 802.11n wireless networking - the ability for access points to issue multiple signals to stations - thereby multiplying the signal's strength and increasing their range and data-carrying capacity.






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






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






27. A file access protocol. It runs over TCP/IP and is the standard file access protocol used by Windows operating systems.






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






29. A protocol suite codified by the IETF (in RFC 2543) as a set of Session layer signaling and control protocols for multiservice - packet-based networks.






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






31. The brand of computer central processing unit invented by and used in Sun Microsystems servers.






32. A standard protocol for accessing network directories.






33. 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.






34. 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.






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






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. 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. A wireless signal or path that travels directly in a straight line from its transmitter to its intended receiver.






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






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






41. 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.






42. 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.






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






44. In IEEE terminology - a group of stations that share an access point.






45. 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.






46. 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






47. 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.






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






49. A variable property associated with a network object. For example - a restriction on the time of day a user can log on is an attribute associated with that user object.






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







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