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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. 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






2. 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.






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






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






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






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






7. 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






8. In ethernet - the process performed by a bridge or switch when it decides that it should send a frame out another port.






9. 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.






10. A physical or a logical area in a LAN where the signals sent by the interfaces ma be subject o being combined. Within a collision domain - if a device sends a frame on a network segment - every other device on that same segment will receive that fram






11. A 1-bit flag in the TCP header that is used to request that a connection be re-established.






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






13. 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






14. The header defined by the IP. Used to create IP packets by encapsulating data supplied by higher-layer protocol (such as TCP) behind an IP header.






15. 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.






16. 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.






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






18. 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






19. DNS data records. Their precise format is defined in RFC 1035. The most important fields in a resource record are Name - class - type and data.






20. 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.






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






22. 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.






23. A request for information. Queries are answered with replies.






24. Devices at the user end of a user-network interface that serves as a data source - destination or both. DTE connects to a data network through a DCE device and typically uses clocking signals generated by the DCE. DTE includes such devices as compute






25. A network that is connected to a device's interface. For example networks that interface with the router are known to be directly connected. Devices learn their initial IP routes based on being connected to these subnets.






26. A protocol that allows a computer to retrieve email from a server.






27. 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






28. 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.






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






30. A layer 4 protocl of TCP/IP model - TCP lets applications guarantee delivery of data across a network.






31. 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.






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






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






34. A unit of measurement of the number of times 1000 bits can be transmitted in 1 second. 1 kbps = 1000bps






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






36. Define in RFC 1918 - an IP address that does not have to be globally unique because the address exists inside packets only when the packets are inside a single private IP internetwork. Private IP addresses are popularly used in most company today - w






37. Defines which wires in a cable should connect to each pin on the connectors on both ends of a cable. For example - a UTP cable used for ethernet - used for a straight-through cable pinout - connects the wire at pin 1 on one end with the pin 1 on the






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






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






40. A map of the devices on a network representing how the devices communcate with each other.






41. Ethernet that transmits data at 1 -000 -000 -000 one billion bits per second.






42. A network created for devices located in a limited geographic area - through which the company owning the LAN has the right to run cables.






43. 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.






44. A written specification that defines what tasks a service or device should perform. Each protocol defines messages - often in the form of headers - plus the rules and processes by which these messages are used to achieve some stated purpose.






45. The standards body responsible for the development and approval of TCP/IP standards






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. An ethernet frame that is less than 64 bytes in size. Runts are caused by collisions and are also know as collision fragments






48. A term that describes IPv4 packets sent to all hosts in a particular network. In a directed broadcast - a single copy of the packet is routed to the specified network - where it is broadcast to all hosts on that network






49. 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






50. 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