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 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.






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






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






4. An access point that provides routing functions and is used as a gateway.






5. 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






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






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






8. 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






9. The IEEE standard for a wireless networking technique that uses DSSS (directsequence spread spectrum) signaling in the 2.4-2.4835-GHz frequency range (also called the 2.4-GHz band). It separates the 2.4-GHz band into 14 overlapping 22-MHz channels an






10. A standard protocol for accessing network directories.






11. In IEEE terminology - the identifier for a BSS (basic service set).






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






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






14. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.






15. A licensing mode that allows a fixed quantity of clients to use one software package simultaneously.






16. 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






17. In IEEE terminology - a group of stations that share an access point.






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






19. The technique of splitting tasks among multiple processors to expedite the completion of any single instruction.






20. The capability for operating multiple logical servers






21. In LDAP naming conventions - the name of an object.






22. The term used to describe software that is distributed with few restrictions and whose source code is freely available.






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






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






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






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






27. 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.






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






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






30. 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.






31. 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.






32. The preferred Active Directory naming convention for objects when used in informal situations. This name looks like a familiar Internet address - including the positioning of the domain name after the @ sign.






33. 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






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






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






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






37. 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.






38. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.






39. The relationship between two domains on a Windows Server 2003 or Server 2008 network that allows a domain controller from one domain to authenticate users from the other domain.






40. A multiprocessing method that assigns each subtask to a specific processor.






41. 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






42. In general - a listing that organizes resources and correlates them with their properties. In the context of NOSs - a method for organizing and managing objects.






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






44. 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.






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






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






47. The type of multitasking in which tasks are actually performed one at a time - in very brief succession. One program uses the processor for a certain period of time - then is suspended to allow another program to use the processor.






48. 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.






49. A wireless networking standard that uses FHSS (frequency hopping spread spectrum) signaling in the 2.4-GHz band to achieve a maximum throughput of either 723 Kbps or 2.1 Mbps - depending on the version. IT was designed for use primarily with small of






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