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






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






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






4. 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






5. A protocol used between media gateway controllers and media gateways. It is poised to replace MGCP on modern converged networks - as it supports a broader range of network technologies - including ATM. Also known as H.248.






6. The action of associating a disk - directory - or device with a drive letter.






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






8. 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.






9. A unique character string used to identify an access point on an 802.11 network.






10. 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.






11. A telephone used for VoIP on a TCP/IP-based network.






12. A type of satellite Internet access service in which a subscriber sends and receives data to and from the Internet over the satellite link. This is a symmetrical technology - in which both upstream and downstream throughputs are advertised to reach 4






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






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






15. A well-defined - self-contained subset of a process. U






16. 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.






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






18. A wireless signaling technique in which a signal jumps between several different frequencies within a band in a synchronization pattern known to the channel's receiver and transmitter.






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






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






21. A connection from an orbiting satellite to an Earth-based receiver.






22. 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.






23. A character that enables you to combine existing commands to form new commands.






24. 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.






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






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






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






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






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






30. 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.






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






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






33. A companion protocol to RTP - defined in RFC 3550 by the IETF - RTCP provides feedback on the quality of a call or videoconference to its participants.






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






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






36. 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.






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






38. The GUI environment for UNIX and Linux systems.






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






40. 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






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






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






43. A service in which video signals are compressed and delivered over the Internet in a continuous stream so that a user can watch and listen even before all the data has been transmitted.






44. Another term for the UNIX command interpreter.






45. In the context of wireless networking - an assessment of client requirements - facility characteristics - and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.






46. 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. |






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






48. A LAN that uses wireless connections for some or all of its transmissions.






49. A technique for ensuring QoS by prioritizing traffic.






50. A continuum of electromagnetic waves used for data and voice