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






2. 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






3. An access point that provides routing functions.






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






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






6. A computer that manages multiple media gateways and facilitates the exchange of call control information between these gateways.






7. A proprietary implementation of the UNIX operating system by Sun Microsystems.






8. A type of server on a Windows Server 2003 or Server 2008 network that does not hold directory information and - therefore - cannot authenticate users.






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






10. 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






11. The process of moving blocks of information - called pages - between RAM and into a page file on disk.






12. 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.






13. An area of a computer's hard drive that is logically defined and acts as a separate disk drive.






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






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






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






17. A domain established within another domain in a Windows Server 2003 or Server 2008 domain tree.






18. The security relationship between domains in the same domain tree in which one domain grants every other domain in the tree access to its resources and - in turn - that domain can access other domains' resources.






19. 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.






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






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






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






23. A standard protocol for accessing network directories.






24. 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






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






26. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Those can connect a group of nodes with a network or two networks with each other. They ma






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






28. A logical representation of multiple - hierarchical levels in a directory.






29. A protocol for communications and resource access between systems - such as clients and servers.






30. 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).






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






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






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






34. In SIP terminology - a server that responds to user agent clients' requests for session initiation and termination.






35. The process of copying Active Directory data to multiple domain controllers. This ensures redundancy so that in case one of the domain controllers fails - clients can still log on to the network - be authenticated - and access resources.






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






37. Another term for the UNIX command interpreter.






38. A technique for ensuring QoS by prioritizing traffic.






39. A type of wireless system in which the locations of the transmitter and receiver are static.






40. 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.






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






42. In the DiffServ QoS technique - a forwarding specification that assigns each data stream a minimum departure rate from a given node. This technique circumvents delays that slow normal data from reaching its destination on time and in sequence.






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






44. 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






45. A UNIX or Linux file system information storage area that holds all details about a file. This information includes the size - the access rights - the date and time of creation - and a pointer to the actual contents of the file.






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






47. A Session layer control protocol defined as part of ITU's H.323 multiservice network architecture. It is responsible for controlling a session between two nodes. For example - it ensures that the two nodes are communicating in the same format.






48. 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.






49. A method of multiprocessing that splits all operations equally among two or more processors.






50. 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.