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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 geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.






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






3. The name of the primary file system used in most Linux distributions.






4. 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.






5. 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.






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






7. A variable property associated with a network object. For example - a restriction on the time of day a user can log on is an attribute associated with that user object.






8. A record of a user that contains all of her properties - including rights to resources - password - user name - and so on.






9. The signals made of electromagnetic energy that travel through the atmosphere.






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






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






12. 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.






13. 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






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






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






16. 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.






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






18. A standard protocol for accessing network directories.






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






20. As specified in RFC 2205 - a QoS technique that attempts to reserve a specific amount of network resources for a transmission before the transmission occurs.






21. 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






22. The provision of telephone service over the Internet.






23. 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).






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






25. 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.






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






27. 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.






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






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






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






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






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






33. The IEEE standard for a wireless networking technique that may issue signals in the 2.4- or 5-GHz band and can achieve actual data throughput between 65 and 600 Mbps. It accomplishes this through several means - including MIMO - channel bonding - and






34. A method used by wireless stations to detect the presence of an access point. The station issues a probe to each channel in its frequency range and waits for the access point to respond.






35. An operating system's method of organizing - managing - and accessing its files through logical structures and software routines.






36. The organization of files and directories (or folders) on a disk in which directories may contain files and other directories. When displayed graphically - this organization resembles a treelike structure.






37. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.






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






39. 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






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






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






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






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






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






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






46. A network access method used on 802.11 wireless networks. In it - before a node begins to send data it checks the medium. If it detects no transmission activity - it waits a brief - random amount of time - and then sends its transmission. If the node






47. The GUI environment for UNIX and Linux systems.






48. The centralized management of multiple types of network-based communications - such as voice - video - fax - and messaging services.






49. 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






50. Another term for the UNIX command interpreter.