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. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.






3. 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.






4. 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






5. 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.






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






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






8. The capability for operating multiple logical servers






9. The centralized management of multiple types of network-based communications - such as voice - video - fax - and messaging services.






10. A user account that has unlimited privileges to resources and objects managed by a server or domain.






11. 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






12. 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.






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






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






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






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






17. A protocol used between media gateway controllers and media gateways. It is poised to replace MGCP on modern converged networks - as it supports a broader range of network technologies - including ATM. Also known as H.248.






18. 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).






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






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






21. A Transport layer protocol used with voice and video transmission. It operates on top of UDP and provides information about packet sequence to help receiving nodes detect delay and packet loss. It also assigns packets a timestamp that corresponds to






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






23. 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).






24. Another term for the UNIX command interpreter.






25. A computer that provides support for multiple H.323 terminals (for example - several workstations participating in a videoconference) and manages communication between them.






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






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






28. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.






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






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






31. A protocol suite codified by the IETF (in RFC 2543) as a set of Session layer signaling and control protocols for multiservice - packet-based networks.






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






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






34. A standard protocol for accessing network directories.






35. A service in which a video stored as an encoded file is delivered to a viewer upon his request.






36. 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






37. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source.






38. An area of a computer's hard drive that is logically defined and acts as a separate disk drive.






39. 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.






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






41. 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.|






42. The exchange of information between the components of a network or system for the purposes of establishing - monitoring - or releasing connections as well as controlling system operations.






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






44. 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.






45. A type of satellite that orbits the Earth roughly 6000 to 12 -000 miles above its surface - positioned between the equator and the poles. These satellites can cover a larger area of the Earth's surface than LEO satellites while using less power and c






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






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






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






49. In the context of 802.11n wireless networking - the ability for access points to issue multiple signals to stations - thereby multiplying the signal's strength and increasing their range and data-carrying capacity.






50. The GUI environment for UNIX and Linux systems.