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Comptia Network + Wireless NOS Voip

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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 proprietary implementation of the UNIX system distributed by IBM.






2. 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






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






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






5. 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.






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






7. 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.






8. 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.






9. The process of making a disk partition available.






10. 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.






11. 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






12. A series of two or more commands in which the output of prior commands is sent to the input of subsequent commands.






13. 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.






14. A service that runs on a client workstation and determines whether the client's request should be handled by the client or the server.






15. A type of software license that - for a fixed price - allows any number of users in one location to legally access a program.






16. 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).






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






18. An end node on a network; used most often in the context of wireless networks. transponder






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






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






21. 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.






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






23. 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






24. A domain established within another domain in a Windows Server 2003 or Server 2008 domain tree.






25. A proprietary NOS from Apple Computer that is based on a version of UNIX.






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






27. 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.






28. An ITU standard that describes an architecture and a suite of protocols for establishing and managing multimedia services sessions on a packet-switched network.






29. 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.






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






31. 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.






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






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






34. 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






35. 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.






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






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






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






39. In the context of applications - a licensing mode that limits access to an application to specific users or workstations.






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






41. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.






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






43. 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.






44. A version of Linux packaged and distributed by Red Hat.






45. A type of trust relationship in which two domains that belong to different NOS directory trees are configured to trust each other.






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






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






48. A well-defined - self-contained subset of a process. U






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






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







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