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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 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.






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






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






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






5. 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.






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






7. 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.






8. 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.






9. The cabling and connectors used to interconnect the network devices.






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






11. The management of data flow between devices in a network. It is used to avoid too much data arriving before a device can handle it - causing data overflow.






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






13. 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






14. In networking - a measurement of the speed of bits that can be transmitted over a particular link. It is the amount of data that can be transmitted in a certain amount of time. For digital bandwidth it is usually expressed in bits per second.






15. 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.






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






17. 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.






18. A corporate system such as a website that is explicitly used by internal employees. Can be assessed internally or remotely






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






20. 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.






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






22. 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






23. 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






24. The network that combines enterprise networks - individual users - and ISPs into a single global IP network.






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






26. 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






27. Somtimes called place-value notation - this is a numeral system in which each position is related to the next by a constant multiplier - a common ration - called the base or radix of that numeral system.






28. 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.






29. 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.






30. A group of IP addresses that have the same value in the first part of the IP addresses - for the purpose of allowing routing to identify the group by the inital part of the addresses. IP addresses in the same subnet typically sit on the same network






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. Binary digit used in the binary numbering system. Binary digits are units of information storage and communication in computing. Each bit can be either a 0 or a 1.






33. 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






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






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






36. An internationally recognized definition of technical specifications that ensure worldwide consistency.






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






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






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






40. 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.






41. In IP subnetting - this refers to the portion of a set of IP addresses whose value must be identical for the addresses to be in the same subnet.






42. 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






43. 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






44. Used by tcp or udp - with values between 0 and 1023 - these ports are allocated by high-privilege processes. They are used so that all clients know the correct port number to connect to.






45. A drag-and-drop network simulator developed by Cisco to design - configure and troubleshoot network equipment within a controlled - simulated program environment.






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






47. 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.






48. One of the three basic binary logic operations. ANDing yields the following result: 1 and 1 = 1 - 1 and 0 = 0 - 0 and 1 = 0






49. 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






50. A model that consists of various layers that enable the development and explanation of technology to be done on a modular basis. This allows interoperability among different technologies among the different layers.