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 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.






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






3. 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






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






5. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dialup) connection.






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






7. A gateway that can translate IP fax data into analog fax data and vice versa.






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






9. 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.






10. The characteristic of wireless signals that follow a number of different paths to their destination (for example - because of reflection - diffraction - and scattering).






11. A service that transmits faxes over a TCP/IP network.






12. 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.






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






14. 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






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






16. 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.






17. 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.






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






19. 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.






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






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






22. Another term for the UNIX command interpreter.






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






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






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






26. 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.






27. 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.






28. A private switch that accepts and interprets both analog and digital voice signals (although some IP-PBXs do not accept analog lines). It can connect with both traditional PSTN lines and data networks. |






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






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






31. An object in an operating system's directory - such as a printer or user - that does not contain other objects.






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






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






34. 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.






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






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






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






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






39. A telephone switch used to connect calls within a private organization.






40. 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.






41. 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






42. In LDAP naming conventions - the name of any one of the domains to which an object belongs.






43. 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).






44. 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.






45. The IEEE standard for a wireless networking technique designed to be compatible with 802.11b while using different encoding techniques that allow it to reach a theoretical maximum capacity of 54 Mbps. It uses the 2.4-GHz frequency band.






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






47. 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






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






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






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).