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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 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.






2. The MAC algorithm used by ethernet devices in a shared media. The protocol requires a node wishing to transmit to listen for a carrier signal before trying to send. If a carrier is sensed - the node waits for transmission in progress to finish before






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






4. In ethernet - the results of two nodes transmitting simlutaneously. The signals from each device are damaged when they combine on the media






5. The minimum time a NIC or interface can take to send an entire frame. Slot time - then - implies a minimum frame size.






6. To change the energy levels transmitted over some networking medium to transmit bits over that medium.






7. A process that uses the same ARP messages as a normal ARP - but by which a router replies instead of the host listed in the ARP request. When a router sees an ARP request that cannot reach the intended host - but for which the router knows a route to






8. An organization that assigns the numbers important to the proper operation of the TCP/IP protocol and the Internet - including assigning globally unique IP addresses.






9. The number of various unique digits - including 0 that a positional number system uses to represent numbers. For example - in the binary system (base 2) the radix is 2. In the decimal system the radix is 10.






10. An IPv4 multicast address that is restricted to a local group or organization






11. A 1-bt flag in the TCP header used to indicate the initial value of the sequence number. The SYN flag is only set in the first two segments of the three-way TCP connection establishment sequence.






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






13. 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.






14. 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.






15. A device on a network that serves as an access point to other networks. A default gateway is used by a host to forward IP packets that have destination addresses outside the local subnet. A router interface typically is used as the default gateway. W






16. 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






17. In ethernet a layer 2 device that receives an electrical signal in one port - interprets the bits - and makes a filtering or forwarding decision about the frame. If it forward - it sends a regenerated signal. Switches typically have many physical por






18. TCP or UDP ports that range from 49152 to 65535 and are not used by any defined server applications.






19. A plan - design or program of action to be followed. Sometimes an addressing plan is called an addressing SCHEME.






20. The actual data transfer rate between two computers at some point in time. Throughput is impacted by the slowest-speed link used to send data between the two computers - as well as myriad variables that might change during the course of a day.






21. Network layer protocol in the TCP/IP stack offering a connectionless internetwork service. IP provides features for addressing - type-of-service specification - fragmentation and reassembly - and security.






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






23. A process by which an end device - after it receives data over some transmission medium - examines the headers and trailers at each successive higher layer - eventually handing the data to the correct application. Sometimes called de-encapsulation.






24. A device that connects to a local digital telephone loop for a WAN circuit to a serial interface on a network device - typically connecting to a router. The CSU/DSU performs physical Layer 1 signaling on WAN circuits






25. An addressing scheme in which a network is partitioned into sections - with the section identifier forming one part of each destination's address and the destination identifier forming another






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. Also known as boolean algebra. These consist of the AND OR and IF operations






28. Random-access memory that does not lose its contents when the computer is shut down






29. The forwarding of packets where the forwarding decision is taken dynamically - hop by hop - based on the conditions of downstream fowrading nodes.






30. Physical medium that uses glass or plastic threads to transmit data. A fiber-optic cable consists of a bundle of these threads - each of which is capable of transmitting data into light waves.






31. A notification sent from one network device to another to confirm that some event has occured.






32. A type of network cabling that includes twisted-pair wires - with shielding around each pair of wires - as well as another shield around all wires in the cable.






33. 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.






34. Any communication in which the sender and receiver do not prearrange for communications to occur






35. In ethernet - the process performed by a bridge or switch when it decides that it should not forward a frame out another port






36. A part of a computer network that every device communicates with using the same physical medium. Network segments are extended by hubs or repeaters.






37. An access method used with some LAN technologies by which devices access the media in a controlled manner. This access to the LAN is managed using a small frame called a toke. A device can send only when it has claimed the use of the token.






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






39. A control mechanism that can provide different priorities to different users or data flows - or guarantee a certain level of performance to a data flow in accordance with requests from the application program.






40. A number used in the 802.11 header to specify the session between a wireless client and the access point.






41. An international standards body that defines many networking standards. Also - the standards body that created the OSI model.






42. A protocol used to dynamically assign IP configurations to hosts. The services defined by the protocol are used to request and assign an IP address - default gateway - and DNS server address to a network host.






43. A popular certification method for fiber systems. The OTDR injects light into the fiber and then graphically displays the results of the detected reflected light. The OTDR measures the elapsed transit time of reflected light to calculate the distance






44. The connection of devices on a common media. Sometimes a physical network is also referred to as a network segment.






45. Another form of the root word converge in the phrase converged network. This kind of network aggregates various forms of traffic such as voice - video and data on the same network infrastructure. A more common usage represents the process by which ro






46. 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






47. The method of for finding a host's hardware address from its IPv4 network layer address.






48. Media access methodology in which a node wishing to transmit listens for a carrier wave before trying to send. If a carrier is sensed - the node waits for the transmission in progress to finish before initiating its own transmission.






49. Any combination of hardware device and/or software application designed to protect network devices from outside network users and/or malicious applications and files.






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







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