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 service in which television signals from broadcast or cable networks travel over packet-switched networks.






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






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






4. The signals made of electromagnetic energy that travel through the atmosphere.






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






6. A client/server environment that uses middleware to translate requests between the client and server.






7. 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.






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






9. 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






10. 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.






11. 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.






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






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






14. 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.






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






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






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






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






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






20. In the DiffServ QoS technique - a forwarding specification that assigns each data stream a minimum departure rate from a given node. This technique circumvents delays that slow normal data from reaching its destination on time and in sequence.






21. 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.






22. The relationship between two domains on a Windows Server 2003 or Server 2008 network that allows a domain controller from one domain to authenticate users from the other domain.






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






24. A connection from an Earth-based transmitter to an orbiting satellite.






25. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point).






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






27. 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






28. 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.






29. A connection from an orbiting satellite to an Earth-based receiver.






30. 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






31. 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.






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






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






34. A unique character string used to identify an access point on an 802.11 network.






35. The brand of computer central processing unit invented by Apple Computer - IBM - and Motorola - Inc. - and used in IBM servers.






36. 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.






37. A type of permission - or right - that is passed down from one group (the parent) to a group within that group (the child).






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






39. An access point that provides routing functions.






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






41. 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.






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






43. The real-time reception and transmission of images and audio among two or more locations.






44. 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.






45. In Microsoft terminology - a group of interconnected computers that share each others' resources without relying on a central file server.






46. 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. |






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






48. A form of filename substitution - similar to the use of wildcards in Windows and DOS.






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