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






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






3. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.






4. 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.






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






6. 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.






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






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






9. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.






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






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






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






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






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






15. 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.






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






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






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






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






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






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






22. A protocol suite codified by the IETF (in RFC 2543) as a set of Session layer signaling and control protocols for multiservice - packet-based networks.






23. 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.






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






25. 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.






26. 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.






27. An ITU standard that describes an architecture and a suite of protocols for establishing and managing multimedia services sessions on a packet-switched network.






28. 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.






29. 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.






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






31. A service that uses the ATM network access method (and ATM cells) to transmit voice signals over a network.






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






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






34. 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






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






36. 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.






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






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






39. A file system developed by Microsoft and used with its Windows NT - Windows 2000 Server - Windows Server 2003 - and Windows 2008 operating systems.






40. A protocol that enables one system to access files on another system.






41. 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).






42. An access point that provides routing functions.






43. The process of making a disk partition available.






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






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






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






47. A record of a user that contains all of her properties - including rights to resources - password - user name - and so on.






48. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.






49. Another term for the UNIX command interpreter.






50. 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.