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






2. 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.






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






4. The description of object types - or classes - and their required and optional attributes that are stored in an NOS's directory.






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






6. A UNIX distribution that originated at the University of California at Berkeley.






7. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.






8. 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.






9. 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.






10. 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.






11. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.






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






13. 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).






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






15. A method used by wireless stations to detect the presence of an access point. The station issues a probe to each channel in its frequency range and waits for the access point to respond.






16. 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.






17. In the context of 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5






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






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






20. A file system developed by Microsoft and used with its Windows NT - Windows 2000 Server - Windows Server 2003 - and Windows 2008 operating systems.






21. 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






22. 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.






23. A variable property associated with a network object. For example - a restriction on the time of day a user can log on is an attribute associated with that user object.






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






25. 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.






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






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






28. 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.






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






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






31. The action of associating a disk - directory - or device with a drive letter.






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






33. A protocol used for communication between media gateway controllers and media gateways.






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






35. 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.






36. 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.






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






38. 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.






39. The process of moving blocks of information - called pages - between RAM and into a page file on disk.






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






41. A standard protocol for accessing network directories.






42. 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.






43. A technique for ensuring QoS by prioritizing traffic.






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






46. 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.






47. The RAM chips installed on the computer's system board that provide dedicated memory to that computer.






48. 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).






49. A type of WLAN in which stations communicate with an access point and not directly with each other.






50. 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. |