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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 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.






2. Represents the 0 in the binary number. In an IP subnet mask - the lower-order bits represent the host portion. Sometimes called the host portion of bits.






3. 1.collection of computers - printers - routers - switches - and other devices that can communication with each other over some transmission medium. 2. command that assgins a NIC based address to which the router is directly connected.






4. A grouping of code that meets a certain - already specified - condition for entering in that certain group.






5. A 1-bit flag in the TCP header that is used to request to the higher layers for immediate delivery of the packet.






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






7. 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






8. An organization that assigns the numbers important to the proper operation of the TCP/IP protocol and the Internet - including assigning globally unique IP addresses.






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






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. 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.






12. 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.






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






14. 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.






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






16. 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






17. Communication that does not use a common clock between the sender and receiver. To maintain timing - additional information is sent to synchronize the receive circuit to the incoming data. For ethernet at 10MBPS - the ethernet devices do not send ele






18. 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.






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






20. 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.






21. 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.






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






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






24. The ability of a protocol. system or component to be modified to fit a new need.






25. 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.






26. A logical storage in the host's RAM to store ARP entries






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






28. 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.






29. A routing feature in which frames in an interface output queue are prioritized based on various characteristics such as packet size and interface type.






30. A numbering system characterized by 1 and 0






31. The glass fibers inside certain cables over which light is transmitted to encode 0 and 1






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






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






34. The loss of communication signal on the media. This loss is due to degradation of the energy wave over time.






35. A special reserved IPv4 address - 127.0.0.1 that can be used to test TCP/IP applications. Packets sent to 127.0.0.1 by a computer never leave the computer or even require working NIC. Instead - the packet is processed by IP at the lowest layer and is






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






37. From the priviledged mode - you can enter the device's global caonfiguration mode. From global configuration mode - you can configure global parameters or enter other configuration submodes such as interface - router and line configuration submodes.






38. An IPv4 multicast address that is restricted to a local group or organization.






39. 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.






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






41. The retransmission delay used with CSMA/CD when a collision occurs. The algorithm forces each sender that detected the collisions to delay a random amount of time before attempting to retransmit.






42. 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






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






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. Line code in which 1s are represented by one significant condition and 0s are represented by another.






46. The design on networks that can continue to operate without interruption in the case of hardware - software or communications failures.






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






48. Computer hardware - typically used for LANS - that allows the computer to connect to some network cable. The NIC can then send and receive data over the cable at the direction of the computer.






49. 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.






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