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






2. A network of computers that behave as if they are connected to the same network segment - even through they might be physically located on different segments of a LAN. VLANs are configured through software on the switch and router.






3. An IPv4 address in the range of 169.254.1.0 to 169.254.254.255. Communication using these addresses is used with a ttl of 1 and limited to the local network






4. 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.






5. A broadcast that is sent to a specific network or series of networks.






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






7. Application-level throughput. It is the number of useful bits per unit of time from a certain source address to a certain destination - excluding protocol overhead and excluding retransmitted data packets.






8. 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.






9. 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.






10. A device on a network that serves as an access point to other networks. A default gateway is used by a host to forward IP packets that have destination addresses outside the local subnet. A router interface typically is used as the default gateway. W






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






12. 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.






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






14. A network device that accesses a service on another computer remotely by accessing the network.






15. Unique addresses that are public domain addresses.






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






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






18. 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.






19. 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.






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






21. 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.






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






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






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






25. A process that uses the same ARP messages as a normal ARP - but by which a router replies instead of the host listed in the ARP request. When a router sees an ARP request that cannot reach the intended host - but for which the router knows a route to






26. 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






27. The minimum time a NIC or interface can take to send an entire frame. Slot time - then - implies a minimum frame size.






28. Routing that adjusts automatically to network topology or traffic changes.






29. 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






30. 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






31. As filed in the TCP header that is set in a sent segment - signifies the maximum amount of unacknowledged data the host is willing to receive before the other sending host must wait for an acknowledgment.






32. A notification sent from one network device to another to confirm that some event has occured.






33. 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






34. 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.






35. 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






36. The layer 3 address to which the data is going.






37. Resources used to manage or operate the network. Overhead consumes bandwidth and reduces the amount of application data that can be transported across the network.






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






39. 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.






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






41. 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.






42. 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.






43. 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.






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






46. The time required to send a single bit over some transmission medium. The time can be calculated at 1/speed - where speed is the number of bits per second sent over the medium






47. 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.






48. An IPV4 addressing scheme that uses a subnet mask that does not follow classful addressing limitations. It provides increased flexibility when dividing ranges of IP addresses into separate networks. Classless addressing is considered the best in curr






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






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