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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 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 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.






3. A proprietary implementation of the UNIX system distributed by IBM.






4. In the context of wireless signal propagation - the phenomenon that occurs when an electromagnetic wave encounters an obstruction and splits into secondary waves. The secondary waves continue to propagate in the direction in which they were split. Th






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






6. The capability for operating multiple logical servers






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






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






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






10. 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






11. In the DiffServ QoS technique - a forwarding specification that allows routers to assign data streams one of several prioritization levels.






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. A part of the organizational structure of an operating system's directory that contains objects or other organizational units.






14. 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.






15. 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.






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






17. In the context of wireless networking - an assessment of client requirements - facility characteristics - and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.






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






19. 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.






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






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






22. 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.






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






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






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






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






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






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






29. 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.






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






31. The process of copying Active Directory data to multiple domain controllers. This ensures redundancy so that in case one of the domain controllers fails - clients can still log on to the network - be authenticated - and access resources.






32. A routine of sequential instructions that runs until it has achieved its goal.






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






34. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.






35. The GUI environment for UNIX and Linux systems.






36. 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.






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






38. A freely distributable implementation of a UNIX-type of system. Finnish computer scientist Linus Torvalds originally developed it.






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






40. A file access protocol. It runs over TCP/IP and is the standard file access protocol used by Windows operating systems.






41. 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.






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






43. Any implementation of UNIX for which the source code is either unavailable or available only by purchasing a licensed copy from Novell (costing as much as millions of dollars).






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






45. 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






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






47. 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.






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






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






50. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.







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