Test your basic knowledge |

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






2. 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.






3. A service that relies on a DSL connection to transmit packetized voice signals.






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






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






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






7. 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. |






8. The IEEE standard for a wireless networking technique designed to be compatible with 802.11b while using different encoding techniques that allow it to reach a theoretical maximum capacity of 54 Mbps. It uses the 2.4-GHz frequency band.






9. A series of two or more commands in which the output of prior commands is sent to the input of subsequent commands.






10. 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.






11. 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.






12. 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






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






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






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






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






17. 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.






18. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.






19. 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).






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






21. 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.






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






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






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






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






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






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






28. 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






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






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






31. 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.






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






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






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






35. The technique of splitting tasks among multiple processors to expedite the completion of any single instruction.






36. The RAM chips installed on the computer's system board that provide dedicated memory to that computer.






37. 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.






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






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 Windows Server 2003 or Server 2008 computer that contains a replica of the Active Directory database.






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






42. 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.






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






44. 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






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






46. The process of making a disk partition available.






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






48. 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.






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






50. 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.