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. The name given to the public software project to implement a complete - free source code implementation of UNIX. It also refers to the collection of UNIX-inspired utilities and tools that are included with Linux distributions.|






2. A representation of a thing or person associated with the network that belongs in the NOS directory.






3. 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






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






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






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






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






8. The brand of computer central processing unit invented by and used in Sun Microsystems servers.






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






10. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.






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






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






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






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






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






16. A program (usually text-based) that accepts and executes system programs and applications on behalf of users. Often - it includes the ability to execute a series of instructions that are stored in a file.






17. 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






18. 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.






19. A type of antenna that issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly m






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






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






22. The proprietary version of UNIX that comes from Bell Labs.






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






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






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






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






27. 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.






28. 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






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






30. 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.






31. The process a wireless station undergoes to find an access point.






32. In the context of wireless networking - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.






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






34. A Transport layer protocol used with voice and video transmission. It operates on top of UDP and provides information about packet sequence to help receiving nodes detect delay and packet loss. It also assigns packets a timestamp that corresponds to






35. A technique for ensuring QoS by prioritizing traffic.






36. 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.






37. In the context of Windows Server 2003 or Server 2008 - a collection of domain trees that use different namespaces. It allows for trust relationships to be established between trees.






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






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






40. The capability for operating multiple logical servers






41. 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.






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






43. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.






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






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






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






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






48. A type of phone that includes a screen and can decode compressed video and interpret transport and signaling protocols necessary for conducting videoconference sessions.






49. 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.






50. 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.