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






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






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. 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.






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






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






8. 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.






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






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






11. An access point that provides routing functions.






12. The nerve center for networks that adhere to H.323. IT authorize and authenticate terminals and gateways - manage bandwidth - and oversee call routing - accounting - and billing.






13. In Microsoft terminology - the type of client/server network that relies on domains - rather than workgroups.






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 type of antenna that issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly m






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






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






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






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






20. 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






21. 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.






22. 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.






23. An open source software package that provides complete Windows-style file- and printer-sharing capabilities.






24. 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.






25. 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






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






27. The IEEE standard for a wireless networking technique that uses multiple frequency bands in the 5-GHz frequency range and provides a theoretical maximum throughput of 54 Mbps.






28. The provision of telephone service over the Internet.






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






30. A technique for ensuring QoS by prioritizing traffic.






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






32. On a network following the H.323 standard - any node that provides audio - visual - or data information to another node.






33. 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






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






35. An internal or externally attached adapter that converts analog telephone signals into packet-switched voice signals and vice-versa.






36. A transmission technique in which a signal's bits are distributed over an entire frequency band at once. Each bit is coded so that the receiver can reassemble the original signal upon receiving the bits.






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






39. The term used to describe the recently released standards for highthroughput - long-distance digital data exchange over wireless connections.






40. A wireless signal or path that travels directly in a straight line from its transmitter to its intended receiver.






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






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. A computer configured to act like an IP telephone. SS7 (Signaling System 7) | A set of standards established by the ITU for handling call signaling on the PSTN (public switched telephone network).






44. 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.






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






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






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






48. 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.






49. 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.






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