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






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






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






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






5. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).






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






7. A 128-bit number generated and assigned to an object upon its creation in Active Directory.






8. In LDAP naming conventions - the name of any one of the domains to which an object belongs.






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






10. The capability for operating multiple logical servers






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






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






13. The term used to refer to the different implementations of a particular UNIX or Linux system. For example - different distributions of Linux include Fedora - SUSE - and Ubuntu.






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






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






16. 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






17. 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






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






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






20. An internal or externally attached adapter that converts analog telephone signals into packet-switched voice signals and vice-versa.






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






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






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 cost-savings benefit that results from organizations completing long-distance telephone calls over their packet-switched networks - thus bypassing tolls charged by common carriers on comparable PSTN calls.






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






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






27. 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).






28. An access point that provides routing functions.






29. 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.






30. A Session layer call signaling protocol defined as part of ITU's H.323 multiservice network architecture. It is responsible for call or videoconference setup between nodes on a VoIP or video-over-IP network - indicating node status - requesting addit






31. 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






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






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






34. 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.






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






36. 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






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






38. A group of access points and associated stations (or basic service sets) connected to the same LAN.






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






40. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dialup) connection.






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






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






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






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






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






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






47. A means of collectively managing users' permissions and restrictions applied to shared resources.






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






49. 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.






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