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






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






3. 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.|






4. 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.






5. The core of a UNIX or Linux system. This part of the operating system is loaded and run when you turn on your computer. It mediates between user programs and the computer hardware.






6. A standard protocol for accessing network directories.






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. 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.






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






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






12. 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






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






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






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






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






17. 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.






18. 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






19. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.






20. The proprietary version of UNIX that comes from Bell Labs.






21. A group of hierarchically arranged domains that share a common namespace in the Windows Server 2003 or Server 2008 Active Directory.






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






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






24. The complete database of hierarchical names (including host and domain names) used to resolve IP addresses with their hosts.






25. On a SIP network - a server that accepts and responds to requests from user agents and SIP proxy servers for location information on recipients that belong to external domains.






26. The capability for operating multiple logical servers






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






28. 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.






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






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






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






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






33. 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.






34. A type of WLAN in which stations communicate with an access point and not directly with each other.






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






36. The description of object types - or classes - and their required and optional attributes that are stored in an NOS's directory.






37. 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.






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






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






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






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






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






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






44. 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.






45. Any type of video service - including IPTV - videoconferencing - and streaming video - that delivers video signals over packet-switched networks using the TCP/IP protocol suite.






46. 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.






47. A type of permission - or right - that is passed down from one group (the parent) to a group within that group (the child).






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






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






50. A long form of an object's name in Active Directory that explicitly indicates the object name - plus the names of its containers and domains. It includes a DC (domain component) - OU (organizational unit) - and CN (common name).