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






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






3. A method used by wireless stations to detect the presence of an access point. The station issues a probe to each channel in its frequency range and waits for the access point to respond.






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






5. 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.






6. 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.






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






8. A standard protocol for accessing network directories.






9. 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






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






11. 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.






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






13. 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.






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






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






16. The name of the primary file system used in most Linux distributions.






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






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






19. 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






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






21. An access point that provides routing functions.






22. 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. |






23. 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.






24. A popular remote file system created by Sun Microsystems - and available for UNIX and Linux operating systems.






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






26. A means of collectively managing users' permissions and restrictions applied to shared resources.






27. 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.






28. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.






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






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






31. In the context of applications - a licensing mode that limits access to an application to specific users or workstations.






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






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






34. 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






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






36. 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.






37. The term used to describe software that is distributed with few restrictions and whose source code is freely available.






38. 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.






39. 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






40. 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.






41. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Those can connect a group of nodes with a network or two networks with each other. They ma






42. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.






43. 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






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






45. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.






46. A computer configured to act like an IP telephone. SS7 (Signaling System 7) | A set of standards established by the ITU for handling call signaling on the PSTN (public switched telephone network).






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






48. 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






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






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