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CCNA Network Fundamentals Vocab

Subjects : cisco, it-skills, ccna
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Network protocols or technologies that do not use the acknowledgment system to guarantee reliable delivery of information






2. 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.






3. 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






4. 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






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






6. The reference to text based logical interfaces on an ios device. These are accesses using telnet or ssh to perform administrative tasks. VTY lines are also called virtual type terminal.






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






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






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






10. Refers to whether the performance of a device - attached to a particular type of LAN - can be accurately predicted. Token Ring LANS are deterministic - but ethernet LANS are non deterministic.






11. An internet wide system by which a hierarchical set of DNS servers collectively hold all the name IP address mappings - with DNS servers referring users to the correct DNS server to successfully resolve a DNS name.






12. In TCP - the process of taking a large chunk of data and breaking it into small enough pieces to fit within a TCP segment without breaking any rules about the maximum amount of data allowed in a segment.






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






14. International standardization program created by ISO and ITU-T to develop standards for data networking that facilitate multivendor equipment interoperability






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






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






17. 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.






18. A part of the ethernet frame that fills in the data field to ensure that the data field meets the minimum size requirement of 46 bytes.






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






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






21. 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






22. 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






23. An entry in an IP routing table that was created because a network engineer entered the routing information into the router's configuration.






24. 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.






25. The process by which a device adds networking heads and trailers to data from an application for the eventual transmission of the data onto a transmission medium.






26. A delineation of networking protocols and standards into different categories - called layers - along with definitions of which sets of standards and protocols need to be implemented to create products that can be used to create a working network






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






28. In ethernet - a device that receives an electrical signal in one port - interprets the bits and regenerates a clean signal that it sends out all other ports of the hub. Typically it also supplies several ports - which are oftentimes RJ-45 jacks.






29. 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.






30. 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.






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






32. Unique addresses that are public domain addresses.






33. The devices and connections of a communications network that comprise the network end of the user to network interface. The DCE provides a physical connection to the network - forwards traffic - and provides a clocking signal used to synchronize data






34. The IEEE 802.2 standard that defines the upper sublayer of the Ethernet Layer 2 specifications.






35. Program used to download and send email. Email clients use POP3 to receive emails and use SMTP to send emails. Also called an email client






36. Routing that adjusts automatically to network topology or traffic changes.






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






38. 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






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






40. A numbering system characterized by 1 and 0






41. Using values between 1024 and 49 -151 these numbers are equivalent to well-known ports in concept - but they are specifically used for nonprivileged application processes.






42. 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.






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






44. 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.






45. 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






46. A group of devices associated by the arrangement of a hierarchial addressing scheme. Devices in the same logical network that share a common network portion of their Layer 3 addresses.






47. A network device that accesses a service on another computer remotely by accessing the network.






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






49. A network device that has an IPv4 address assigned to it to communication over a network.






50. 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







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