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. On a network following the H.323 standard - a gateway that provides translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols (for example - SS7 on the PSTN).






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






4. A service in which television signals from broadcast or cable networks travel over packet-switched networks.






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






6. 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.






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






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






9. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.






10. 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. |






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






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






13. A small (usually home) network composed of personal communications devices.






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






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






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






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






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






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






20. 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






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






22. Any implementation of UNIX for which the source code is either unavailable or available only by purchasing a licensed copy from Novell (costing as much as millions of dollars).






23. A part of the organizational structure of an operating system's directory that contains objects or other organizational units.






24. A type of satellite that orbits the Earth roughly 6000 to 12 -000 miles above its surface - positioned between the equator and the poles. These satellites can cover a larger area of the Earth's surface than LEO satellites while using less power and c






25. 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.






26. 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.






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






28. A routine of sequential instructions that runs until it has achieved its goal.






29. In LDAP naming conventions - the name of an object.






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






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






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






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






34. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.






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






36. 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.






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






38. A version of Linux packaged and distributed by Red Hat.






39. 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.






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






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






42. A popular remote file system created by Sun Microsystems - and available for UNIX and Linux operating systems.






43. An end node on a network; used most often in the context of wireless networks. transponder






44. In Microsoft terminology - the primary purpose of a Windows Server 2008 server.






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






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






47. 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.






48. 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






49. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.






50. 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.