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CCNA Network Fundamentals Vocab

Subjects : cisco, it-skills, ccna
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 glass fibers inside certain cables over which light is transmitted to encode 0 and 1






2. A grouping of code that meets a certain - already specified - condition for entering in that certain group.






3. The process by which a router receives an incoming frame - discards the ata link header and trailer - makes a forwarding decision based on the destination IP address - adds a new data-link header and trailer based on the outgoing interface and forwar






4. A 1-bit flag in the TCP header that is used to request to the higher layers for immediate delivery of the packet.






5. A combination of many IP subnets and networks - as created by building a network using routers. The term internwork is used to avoid confusion with the term network - because an internetwork can include several IP networks.






6. A common name for ethernet technology that operates at 100 mbps.






7. Application-level throughput. It is the number of useful bits per unit of time from a certain source address to a certain destination - excluding protocol overhead and excluding retransmitted data packets.






8. Represents the 0 in the binary number. In an IP subnet mask - the lower-order bits represent the host portion. Sometimes called the host portion of bits.






9. A field in the IP header that prevents a packet form indefinitely looping around an IP internetwork. Router decrements the TTL field each time they forward a packet - and if they decrement the TTL to 0 - the router discards the packet - which prevent






10. The IPv4 multicast addresses 224.0.0.0 to 224.0.0.255. These addresses are to be used for multicast groups on a local network. Packets to these destinations are always transmitted with a TTTL value of 1






11. A removable component that has memory space for storage. Used on the router or switch for storing the compressed operating system image.






12. A network device - typically connected to a range of LAN and WAN interfaces - that forwards packets based on their destination IP addresses.






13. In LAN switches a reference to cases in which a frame is forwarded - or switche - when the incoming and outgoing interfaces use the same speed. It is the opposite of asymmetric switching.






14. An application protocol typically not used by end users. Instead - it is used by the network management software and networking devices to allow a network engineer to monitor and troubleshoot network problems.






15. A 32-bit number - written in dotted decimal notation - used by the IP to uniquely identify an interface connected to an IP network. It is also used as a destination address in an IP header to allow routing - and as a source address to allow a compute






16. The optical or electrical impulse on a physical medium for purposes of communication.






17. The lower of the two sublayers of the IEEE standard for ethernet. It is also the name of that sublayer






18. Part of a company's intranet that is extended to users outside the company






19. A system of network design characterized by one or more major components that are required to maintain operation.






20. The loss of communication signal on the media. This loss is due to degradation of the energy wave over time.






21. The largest IP packet size allowed to be sent out a particular interface. Ethernet interfaces default to an MTU of 1500 because the data field of an Ethernet frame should be limited to 1500 bytes - and the IP packet sits inside the ethernet frame's d






22. A 1-bit flag in the TCP header used to indicate that the receiving host should notify the destination process to do urgent processing.






23. Routing table entry that is used to direct frames for which a next hop is not explicitly listed in the routing table. This route is used to forward a packet when no other known route exists for a give packet's destination address.






24. Line code in which each bit of data is signified by at least one voltage level transition.






25. The networking layers whose processes are not affected by the media being used. In ethernet - these are all the layers from the LLC sublayer of data link upward.






26. The process of obscuring information to make it unreadable without special knowledge - somtimes referred to as scrambling. The process takes the data to be encrypted and applies a mathematical formula to it along with a secret number. The resulting v






27. Additional data that is provided with a command to provide information used by the execution of the command. IOS command arguments are entered at the CLI after the command






28. A network topology characterized by a central location connected to multiple hubs. In an extended star - these interconnected hubs may be connected to more hubs. It is essentially a hierarchical topology but typically is drawn with the central site i






29. The origin of the PDU. This can be a process a host or a node - depending on the layer to which you are reffering.






30. A device that connects end devices to the network or interconnects different networks. A router is an example of an intermediary device.






31. An international - nonprofit organization for the advancement of technology related to eletricity. IEEE maintains the standards defining many LAN protocols.






32. Normally - a relatively general term that refers to dfifferent kinds of networking devices. Historically - when routers were created - they were called gateways






33. An IPV4 addressing scheme that uses a subnet mask that does not follow classful addressing limitations. It provides increased flexibility when dividing ranges of IP addresses into separate networks. Classless addressing is considered the best in curr






34. A high-speed line or series of connections that forms a major pathway within a network. The term is often used to describe the main network connections comprising the Internet.






35. The passage of a data packet between two network nodes.






36. As filed in the TCP header that is set in a sent segment - signifies the maximum amount of unacknowledged data the host is willing to receive before the other sending host must wait for an acknowledgment.






37. The process of forwarding frames in a switch or a bridge from one port to another port or from segment to segment






38. In networking - a general term referring to any energy signal on a transmission medium that is not part of the signal used to transmit data over that medium.






39. The arrangement of the nodes in a network and the physical connections between them. This is the representation of how the media is used to connect the devices.






40. The table used by a switch or bridge that associates MAC addresses with the outgoing port. The switch or bridge uses this table for its forwarding/filtering decisions.






41. The client part of the DNS client server mechanism. A DNS resolver creates queries sent a across a network to a same server - interprets responses - and returns information to the requesting programs.






42. A method of computer processing in which different parts of a program run simultaneously on two or more computers that are communicating with each other over a network






43. A method of internal processing by LAN switches. The switch must receive the entire frame before it sends the first bit of the frame. Store and forward switch is the method used by cisco switches.






44. A model that consists of various layers that enable the development and explanation of technology to be done on a modular basis. This allows interoperability among different technologies among the different layers.






45. A method of expressing a network prefix. It uses a forward slash / followed by the network prefix.






46. A data link layer address - for example a MAC address






47. Unique addresses that are public domain addresses.






48. The spreading of light signal caused by light signals traveling at different speeds through a fiber.






49. The retransmission delay used with CSMA/CD when a collision occurs. The algorithm forces each sender that detected the collisions to delay a random amount of time before attempting to retransmit.






50. The IPv4 address block 192.0.2.0 to 192.0.2.255 that is set aside for teaching and learning purposes. These addresses can be used in documentation and network examples.