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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.
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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 client or server operating system originally developed by researchers at AT&T Bell Laboratories in 1969.






2. 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.






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






4. A type of wireless transmission in which lower-level signals are distributed over several frequencies simultaneously.






5. Another term for the UNIX command interpreter.






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






7. The exchange of information between the components of a network or system for the purposes of establishing - monitoring - or releasing connections as well as controlling system operations.






8. 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.






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






10. The capability for operating multiple logical servers






11. 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.






12. 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.






13. 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.






14. The nerve center for networks that adhere to H.323. IT authorize and authenticate terminals and gateways - manage bandwidth - and oversee call routing - accounting - and billing.






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






16. 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






17. 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).






18. The relationship between two domains on a Windows Server 2003 or Server 2008 network that allows a domain controller from one domain to authenticate users from the other domain.






19. 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.






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






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






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






23. 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).






24. 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.






25. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.






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






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






28. A special identifier shared by BSSs that belong to the same ESS.






29. 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






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






31. 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.






32. The process of moving blocks of information - called pages - between RAM and into a page file on disk.






33. A UNIX or Linux file system information storage area that holds all details about a file. This information includes the size - the access rights - the date and time of creation - and a pointer to the actual contents of the file.






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






35. In SIP terminology - a server that responds to user agent clients' requests for session initiation and termination.






36. The method for organizing and managing objects associated with the network in the Windows Server 2003 and Server 2008 NOSs.






37. 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






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






39. A type of wireless system in which the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.






40. 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.






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






42. 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






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






44. A type of trust relationship in which two domains that belong to different NOS directory trees are configured to trust each other.






45. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.






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






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






48. 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.






49. In the context of wireless networking - an assessment of client requirements - facility characteristics - and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.






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







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