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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. In the context of wireless signal propagation - the phenomenon that occurs when an electromagnetic wave encounters an obstruction and splits into secondary waves. The secondary waves continue to propagate in the direction in which they were split. Th






2. 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.






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






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






5. 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. |






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






7. 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.






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






9. 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.






10. A client/server environment that uses middleware to translate requests between the client and server.






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






12. The brand of computer central processing unit invented by Apple Computer - IBM - and Motorola - Inc. - and used in IBM servers.






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






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






15. 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.






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






17. A logical representation of a networked printer's functionality.






18. A part of the organizational structure of an operating system's directory that contains objects or other organizational units.






19. A pictorial representation of computer functions and elements that - in the case of NOSs - enables administrators to more easily manage files - users - groups - security - printers - and other issues.






20. 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.






21. In Microsoft terminology - the type of client/server network that relies on domains - rather than workgroups.






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






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






24. A method of multiprocessing that splits all operations equally among two or more processors.






25. A service in which a video stored as an encoded file is delivered to a viewer upon his request.






26. A type of object recognized by an NOS directory and defined in an NOS schema.






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






28. An attribute of an object that identifies the object separately from its related container(s) and domain.






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






30. 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






31. In LDAP naming conventions - the name of any one of the domains to which an object belongs.






32. The provision of telephone service over a packet-switched network running the TCP/IP protocol suite.






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






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






35. A proprietary NOS from Apple Computer that is based on a version of UNIX.






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






37. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.






38. A type of satellite that orbits the Earth with an altitude between 100 and 900 miles - closer to the Earth's poles than the orbits of either GEO or MEO satellites.






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






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






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






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






43. 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.






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






45. 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).






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






47. A type of WLAN in which stations communicate with an access point and not directly with each other.






48. An exchange in which a wireless station requests the exclusive right to communicate with an access point and the access point confirms that it has granted that request.






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






50. 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.