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






2. A popular remote file system created by Sun Microsystems - and available for UNIX and Linux operating systems.






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






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






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






6. An IEEE standard for wireless MANs. Its networks may use frequencies between 2 and 66 GHz. Their antennas may operate in a line-of-sight or non-line-of-sight manner and cover 50 kilometers (or approximately 30 miles). Its connections can achieve a ma






7. A type of antenna that issues wireless signals along a single direction - or path.






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






9. The computer instructions written in a programming language that is readable by humans.






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






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






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






13. The IEEE standard for a wireless networking technique designed to be compatible with 802.11b while using different encoding techniques that allow it to reach a theoretical maximum capacity of 54 Mbps. It uses the 2.4-GHz frequency band.






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






15. A collection of H.323 terminals - gateways - and MCUs that are managed by a single H.323 gatekeeper.






16. 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






17. The provision of telephone service over the Internet.






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






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






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






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






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






23. The provision of telephone service over a packet-switched network running the TCP/IP protocol suite.






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






25. 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.






26. A UNIX command that places files in the printer queue.






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






28. A type of wireless system in which the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.






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






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






31. 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.






32. 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. |






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






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






35. A well-defined - self-contained subset of a process. U






36. The online documentation for any variety of the UNIX operating system. This documentation describes the use of the commands and the programming interface.






37. A nonprofit industry association that owns the UNIX trademark.






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






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






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






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






42. 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






43. A record of a user that contains all of her properties - including rights to resources - password - user name - and so on.






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






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






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






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






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. 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.






50. A standard protocol for accessing network directories.