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






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






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






4. An IEEE standard for wireless MANs. Its networks may use frequencies between 2 and 66 GHz. Their antennas may operate in a line-of-sight or non-line-of-sight manner and cover 50 kilometers (or approximately 30 miles). Its connections can achieve a ma






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






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






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






8. On a SIP network - a server that maintains a database containing information about the locations (network addresses) of each user agent in its domain. When a user agent joins a SIP network - it transmits its location information to the SIP registrar






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






10. A type of wireless system in which the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.






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






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






13. 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.






14. 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.






15. A service that relies on a DSL connection to transmit packetized voice signals.






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






17. A user account that has unlimited privileges to resources and objects managed by a server or domain.






18. In SIP terminology - end-user devices such as workstations - PDAs - cell phones - or IP telephones. It initiates a SIP connection.






19. 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.






20. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.






21. A UNIX distribution that originated at the University of California at Berkeley.






22. 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.






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






24. A technique for ensuring QoS by prioritizing traffic.






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






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






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






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






29. An access point that provides routing functions.






30. 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






31. A connection from an Earth-based transmitter to an orbiting satellite.






32. The capability for operating multiple logical servers






33. 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






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






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






36. 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.|






37. A client/server environment that uses middleware to translate requests between the client and server.






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






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






40. The RAM chips installed on the computer's system board that provide dedicated memory to that computer.






41. 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






42. 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.






43. Currently - the most popular version of WiMAX. IEEE improved the mobility and QoS characteristics of the technology - making it better suited to VoIP and mobile phone users.






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






45. 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.






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






47. 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.






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






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






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