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






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






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






4. 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






5. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.






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






7. The software that sits between the client and server in a 3-tier architecture.






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






9. A form of filename substitution - similar to the use of wildcards in Windows and DOS.






10. A type of permission - or right - that is passed down from one group (the parent) to a group within that group (the child).






11. 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.






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






13. 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






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






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






16. 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






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






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






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






20. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.






21. The organization of files and directories (or folders) on a disk in which directories may contain files and other directories. When displayed graphically - this organization resembles a treelike structure.






22. 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






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






24. A protocol used for communication between media gateway controllers and media gateways.






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






26. 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.






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






28. 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.






29. A Session layer control protocol defined as part of ITU's H.323 multiservice network architecture. It is responsible for controlling a session between two nodes. For example - it ensures that the two nodes are communicating in the same format.






30. A freely distributable implementation of a UNIX-type of system. Finnish computer scientist Linus Torvalds originally developed it.






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






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






33. The diffusion of a wireless signal that results from hitting an object that has smaller dimensions compared to the signal's wavelength.






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






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






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






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






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






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






40. A proprietary implementation of the UNIX system distributed by IBM.






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






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






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






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






45. 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.






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






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






48. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.






49. The memory that is logically carved out of space on the hard drive and added to physical memory (RAM).






50. A file access protocol. It runs over TCP/IP and is the standard file access protocol used by Windows operating systems.