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






2. The type of multitasking in which tasks are actually performed one at a time - in very brief succession. One program uses the processor for a certain period of time - then is suspended to allow another program to use the processor.






3. The GUI environment for UNIX and Linux systems.






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






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






6. 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






7. 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






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






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






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






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






12. 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.






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






14. A service that relies on a DSL connection to transmit packetized voice signals.






15. 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.






16. A program (usually text-based) that accepts and executes system programs and applications on behalf of users. Often - it includes the ability to execute a series of instructions that are stored in a file.






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






18. 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.






19. A type of wireless transmission in which lower-level signals are distributed over several frequencies simultaneously.






20. 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.






21. 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).






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






23. 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.






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






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






26. 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.






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






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. An exchange in which a wireless station requests the exclusive right to communicate with an access point and the access point confirms that it has granted that request.






30. 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.






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






32. 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.






33. A group of hierarchically arranged domains that share a common namespace in the Windows Server 2003 or Server 2008 Active Directory.






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






35. The IEEE standard for a wireless networking technique that uses DSSS (directsequence spread spectrum) signaling in the 2.4-2.4835-GHz frequency range (also called the 2.4-GHz band). It separates the 2.4-GHz band into 14 overlapping 22-MHz channels an






36. An access point that provides routing functions.






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






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






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






40. 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






41. 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.






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






43. 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.|






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






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






46. A UNIX service responsible for printing files placed in the printer queue by the lpr command.






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






48. 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.






49. A LAN that uses wireless connections for some or all of its transmissions.






50. A group of users - servers - and other resources that share account and security policies through a Windows Server 2003 or Server 2008 NOS.