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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 UNIX service responsible for printing files placed in the printer queue by the lpr command.






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






3. 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.






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






5. Another term for the UNIX command interpreter.






6. 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.






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






8. The term used to describe the recently released standards for highthroughput - long-distance digital data exchange over wireless connections.






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






10. 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






11. In the context of 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5






12. A character that enables you to combine existing commands to form new commands.






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






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






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






16. 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.






17. The ability of a processor to perform multiple activities in a brief period of time (often seeming simultaneous to the user






18. A GUI tool provided with Windows Server 2008 that enables network administrators to manage server roles - features - resources - and users from a single interface.






19. 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






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






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






22. 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






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






24. 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.






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






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






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






28. An access point that provides routing functions.






29. 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.






30. 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.






31. 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






32. A gateway that can translate IP fax data into analog fax data and vice versa.






33. 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.






34. The capability for operating multiple logical servers






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






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






37. Currently - the most popular version of WiMAX. IEEE improved the mobility and QoS characteristics of the technology - making it better suited to VoIP and mobile phone users.






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






39. The GUI environment for UNIX and Linux systems.






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






41. 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






42. 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.






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






44. The relative strength over a three-dimensional area of all the electromagnetic energy an antenna sends or receives.






45. 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






46. A group of hierarchically arranged domains that share a common namespace in the Windows Server 2003 or Server 2008 Active Directory.






47. A type of server on a Windows Server 2003 or Server 2008 network that does not hold directory information and - therefore - cannot authenticate users.






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






49. 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.






50. 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.







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