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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 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.






2. 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.






3. 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






4. The bit position in a binary number having the greatest value. The most significant bit is sometime referred to as the leftmost bit.






5. An international - nonprofit organization for the advancement of technology related to eletricity. IEEE maintains the standards defining many LAN protocols.






6. A method of internal processing by LAN switches. The switch must receive the entire frame before it sends the first bit of the frame. Store and forward switch is the method used by cisco switches.






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






8. 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.






9. 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.






10. A type of hash function that is used to produce a small - fixed size checksum of a block of data - such as a packet or a computer file. A CRC is computed and appended before transmission or storage - and verified afterward by the recipient to confirm






11. Also known as boolean algebra. These consist of the AND OR and IF operations






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






13. Communication that only allows one station to receive while the other station is transmitting






14. 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






15. 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.






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






17. A process used by a switch or bridge to forward broadcasts and unknown destination unicasts. The bridge/switch forwards these frames out all ports except the port on which the frame was received.






18. 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.






19. 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.






20. 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.






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






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






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






24. The portion of a binary number that carries the most weight - the one written farthest to the left. High-order bits are the 1s in the network mask.






25. A common term for 10base5 ethernet - referring to the fact that 10base5 cabling is thicker than the coaxial cabling used for 10base2.






26. 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.






27. 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.






28. Defines the commands - headers and processes by which web server and web browsers transfer files.






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






30. In a web browser - an application the browser uses - inside the browser window to display some types of content. For example - a browser typically uses a plug-in to display video.






31. An IP address that has been registered with IANA or one of its member agencies - which guarantees that the address is globally unique. Globally unique public IP addresses can be used for packets sent through the Internet.






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






33. 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






34. A system of network design characterized by one or more major components that are required to maintain operation.






35. 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.






36. 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






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






38. 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






39. Normally - a relatively general term that refers to dfifferent kinds of networking devices. Historically - when routers were created - they were called gateways






40. A common term for 10base2 ethernet - referring to the fact that 10base2 cabling is thinner than coaxial cabling used for 10base5






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






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






43. The limited CLI mode where the commands available to the user are a subset of those available at the privileged level. In general - use the user Exec commands to temporarily change terminal settings - perform basic tests and list system information.






44. 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






45. Communication where the sender and receiver must prearrange for communications to occur; otherwise - the communication fails.






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






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






48. 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.






49. The method of for finding a host's hardware address from its IPv4 network layer address.






50. A communication path over a medium used to transport information from a sender to a receiver. Multiple channels can be multiplexed over a single cable