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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. 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






2. 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.






3. Unencrypted password used to allow access to privledge EXEC mode from IOS user EXEC mode.






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






5. A generic term from OSI that refers to the data - headers - and trailers about which a particular network layer is concerned.






6. 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.






7. 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.






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






9. 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






10. The IP address of the originating host that is placed into the IP packet header.






11. A technique used to attack an ethernet network by sending fake ARP messages to an ethernet LAN. These frames contain false MAC addresses that confuse network devices - such as switches. As a result - frames intended for one node can be mistakenly sen






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






13. 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.






14. A member of a multicast group. Every multicast client in each group has the same IP address. Multicast addresses begin with 224... and end with 239...






15. A logical connection between devices in which the frames are passed between the devices. Virtual circuits are independent of the physical structure and may be established through multiple physical devices.






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






17. 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.






18. Data that directs a process. a flag in a data-link frame is an example of control data.






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






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






21. A source of information that is highly reliable and known for its accuracy






22. 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






23. 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.






24. The structure and order of words in a computer language






25. Network protocols or technologies that do not use the acknowledgment system to guarantee reliable delivery of information






26. An address used to represent a transmission from one device to all devices. In ethernet - the sepcial ethernet address FFFF.FFFF.FFFF is used as a destination MAC address to cause a frame to be sent to all devices on an ethernet LAN. In IPV4 - each s






27. A dotted decimal number that helps identify the structure of IP addresses. The mask represents the network and subnet parts of related IP addresses with binary 1s and the host part of related IP addresses with binary 0s






28. 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.






29. To transfer data from the computer functioning as a server to the client computer you are using.






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






31. A related set of communications transactions between two or more network devices.






32. A protocol used between routers so that they can learn routes to add to their routing tables.






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






34. 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.






35. 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.






36. 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






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






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






39. 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.






40. A company that helps create the Internet by providing connectivity to enterprises and individuals - as well as interconnecting to other ISPs to create connectivity to all other ISPs.






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






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






43. A device such as a desktop or mobile device that is used by an end user.






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. 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. The dividing of IP datagrams to meet the MTU requirement of a layer 2 protocol.






47. 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.






48. On a switch - a table that lists all known MAC addresses - and the bridges/switch port out which the bridge/switch should forward frames sent to each MAC address.






49. 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.






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