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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. The MAC address that is permanently assigned to a LAN interface or NIC. It is called burned-in because the address is burned into a chip on the card - and the address cannot be changed. Also called universally administered address.






2. 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.






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






4. A dotted decimal number defined by the IPv4 protocol to represent a network or subnet. It represents the network that hosts reside in. Also called a network number or network ID.






5. An encoding scheme 4B/5B uses 5-bit symbols and codes to represent 4 bits of data. 4B/5B is used in 100Base-tx ethernet.






6. A popular certification method for fiber systems. The OTDR injects light into the fiber and then graphically displays the results of the detected reflected light. The OTDR measures the elapsed transit time of reflected light to calculate the distance






7. Can refer to computer hardware that is to be used by multiple concurrent users. Alternatively - this term can refer to computer software that provides services to many users. For example - a web server consists of web server software running on some






8. 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.






9. 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.






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. A group that receives a multicast transmission. The members of a multicast group have the same mulitcast IP addressing to receive the same transmission.






12. 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






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






14. A network model defined by the IETF that has been implemented on most computers and network device in the world.






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






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






17. 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.






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






19. 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






20. When used generically - this term refers to end-user data along with networking headers and trailers that are transmitted through a network. When used specifically - it is end-user data - along with the network or Internet layer headers and any highe






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






22. 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.






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






24. 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






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






26. 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.






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






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






29. An application protocol typically not used by end users. Instead - it is used by the network management software and networking devices to allow a network engineer to monitor and troubleshoot network problems.






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






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






32. 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.






33. In networking - a general term referring to any energy signal on a transmission medium that is not part of the signal used to transmit data over that medium.






34. 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






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






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






37. 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.






38. The lower of the two sublayers of the IEEE standard for ethernet. It is also the name of that sublayer






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






40. A service or a program to look up information in the DNS






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






42. A command on many computer operating systems that discovers the IP addresses - and possibly host names - of the routers used by the network when sending a packet from one computer to another.






43. 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.






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






45. The time required for some network pdu's to be sent and received - and a response PDU to be sent and received. In other words - the time between when a device sends data and when the same device receives a response.






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






47. 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






48. 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.






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






50. Network layer protocol in the TCP/IP stack offering a connectionless internetwork service. IP provides features for addressing - type-of-service specification - fragmentation and reassembly - and security.