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






2. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Those can connect a group of nodes with a network or two networks with each other. They ma






3. The provision of telephone service over the Internet.






4. An access point that provides routing functions.






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






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






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






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






9. 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.






10. 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.






11. A character that enables you to combine existing commands to form new commands.






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






13. A Windows Server 2003 or Server 2008 computer that contains a replica of the Active Directory database.






14. In the context of wireless networking - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.






15. 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






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






17. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.






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






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






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






21. A method of multiprocessing that splits all operations equally among two or more processors.






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






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






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






25. In IEEE terminology - the identifier for a BSS (basic service set).






26. The method for organizing and managing objects associated with the network in the Windows Server 2003 and Server 2008 NOSs.






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






28. 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.






29. 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.






30. 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).






31. The brand of computer central processing unit invented by and used in Sun Microsystems servers.






32. The GUI environment for UNIX and Linux systems.






33. A type of server on a Windows Server 2003 or Server 2008 network that does not hold directory information and - therefore - cannot authenticate users.






34. 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.






35. The technique of splitting tasks among multiple processors to expedite the completion of any single instruction.






36. A multiprocessing method that assigns each subtask to a specific processor.






37. A technique for ensuring QoS by prioritizing traffic.






38. 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. |






39. A type of wireless transmission in which signals travel over a single frequency or within a specified frequency range.






40. 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.






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






42. 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.|






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






44. The software that sits between the client and server in a 3-tier architecture.






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






46. 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).






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






48. 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






49. 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.






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







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