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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. This field of a frame signals the beginning or end of a frame.






2. A broadcast that is sent to a specific network or series of networks.






3. 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.






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






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






6. The design on networks that can continue to operate without interruption in the case of hardware - software or communications failures.






7. 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






8. Organizations that are responsible for the allocation and registration of Internet number resources within a particular region of the world. These registries include the American Registry for Internet Number for North America; RIPE network coordinati






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






10. The table used by a switch that associates MAC addresses with the outgoing port. A general term for the table that a LAN bridge uses for its forwarding/filtering decisions. The table holds a list of MAC addresses and the port out which the bridge sho






11. A logical storage in a host's RAM to store arp entries.






12. The ability of a protocol. system or component to be modified to fit a new need.






13. A 1-bit field in the TCP header that is used by a device that wants to terminate its session with the other device. This is done by inserting the FIN flag in the flag field found in the TCP segment






14. The normal operation of ethernet ports on a hub. In this mode - the mapping of the wire pairs in the hub port is in a normal configuration. Some hubs provide a media-dependent interface/media-dependent interface - crossover switch. This switch is usu






15. Communication that allows receipt and transmission simultaneously. A station can transmit and receive at the same time. There are no collisions with full-duplex ethernet transmision.






16. Communication that does not use a common clock between the sender and receiver. To maintain timing - additional information is sent to synchronize the receive circuit to the incoming data. For ethernet at 10MBPS - the ethernet devices do not send ele






17. A computer program that runs in the background and is usually initiated as a process. Daemons often support server processes.






18. 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.






19. Translation RFC 1918 addresses to public domain addresses. Because RFC 1918 addresses are not routerd on the Internet - hosts accessing the Internet must use public domain addresses.






20. A signal on a medium used to support the transmission of data. Data is carried over the medium by modulation.






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






22. Path through an internetwork through which packets are forwarded.






23. 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.






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






25. A convention for writing IP addresses with four decimal numbers - ranging from 0 to 255 - with each octet representing 8 bits of the 32 bit IP address. The term originates from the fact that each of the four decimal numbers is separated by a period.






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






27. IPv4 address of a network host. When talking about host addresses - they are the network layer addresses.






28. Used in the CLI following the command. Keywords are parameters that are used with the command from a set of predefined values.






29. A logical network composed of all the computers and networking devices that can be reached by sending a frame to the data link layer broadcast address.






30. A general type of cable - with the cable holding twisted pairs of copper wires and the cable itself having little shielding.






31. In networking - a symbol used when drawing network diagrams that represent a part of the network whose details can be ignored for the purposes of the diagram.






32. The physical interface transceivers. It deals with Layer 1 (the physical layer - hence the PHY) of ethernet.






33. 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.






34. An encoding scheme 4B/5B uses 5-bit symbols and codes to represent 4 bits of data. 4B/5B is used in 100Base-tx ethernet.






35. A network architecture designed to eliminate network downtime cause by a single point of failure.






36. Communication that uses a common clocking signal. In most synchronous communicatino - one of the communicating devices generates a clock signal into the circuit. Additional timing information is not required in the header.






37. Radio frequencies that creat noise that interferes with information being transmitted across unshielded copper cabling.






38. A rectangular cabling connector with eight pins - often used with ethernet cables.






39. 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.






40. The layer 2 pdu that has been encoded by a data link layer protocol for digital transmission. Some different kinds of frames are ethernet frames and PPP frames.






41. A MAC address that can be configured on a device. The LAA can be used in place of the BIA . This means that you can replace a NIC or use a substitute device without changing the address used by the network to access the station.






42. A list of router holds in memory for the purpose of deciding how to forward packets.






43. A port on cisco devices to which a terminal or computer with a terminal emulator is connected to the network device in order to communicate and configure the network device






44. As part of the TCP/IP internet layer - ICMP defines protocol messages used to inform network engineeres of how well an internetwork is working. For example - the ping command sends ICMP messages to determine whether a host can send packets ot another






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






46. A network of computers that behave as if they are connected to the same network segment - even through they might be physically located on different segments of a LAN. VLANs are configured through software on the switch and router.






47. An application level network protocl mainly applied to shared access to files - printers - serial ports - and miscellaneous communications between nodes on a network.






48. A group defined by a class D address (multicast - ranging from 224.0.0.0 to 239.255.255.255) - whereupon hosts can pertain to multicast groups. Hosts that have the same multicast address are part of the same host group.






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






50. 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.