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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. Line code in which each bit of data is signified by at least one voltage level transition.






2. The MAC algorithm used by ethernet devices in a shared media. The protocol requires a node wishing to transmit to listen for a carrier signal before trying to send. If a carrier is sensed - the node waits for transmission in progress to finish before






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






4. 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.






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






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






7. 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.






8. 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.






9. 1. a collision domain that is a section of a LAN that is bound by bridges - routers or switches. 2. In a LAN using a bus topology - a segment is a continuous electrical circuit that is often connected to other such segments with repeaters. 3. When us






10. 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






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






12. 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






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






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






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






16. 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.






17. A group of 8 binary bits. It is similar to - but not the same as - a byte. One Application in computer network is to use octets to divide IPv4 addresses into four components






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






19. 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






20. A number used in the 802.11 header to specify the session between a wireless client and the access point.






21. 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.






22. A network that incorporates both optical fiber along with coaxial cable to create a broadband network. commonly used by cable tv companies.






23. A delineation of networking protocols and standards into different categories - called layers - along with definitions of which sets of standards and protocols need to be implemented to create products that can be used to create a working network






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






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






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






27. 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.






28. 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.






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






30. The dividing of IP datagrams to meet the MTU requirement of a layer 2 protocol.






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






32. A protocol used to dynamically assign IP configurations to hosts. The services defined by the protocol are used to request and assign an IP address - default gateway - and DNS server address to a network host.






33. An access method used with some LAN technologies by which devices access the media in a controlled manner. This access to the LAN is managed using a small frame called a toke. A device can send only when it has claimed the use of the token.






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






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






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






37. 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.






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






39. A form of transmission where one device transmits to all devices within the network or on another network






40. 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






41. 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.






42. A protocol for synchronizing the clocks of computer systems over packet-switch data networks. NTP uses UDP port 123 as its transport layer.






43. Physical medium that uses glass or plastic threads to transmit data. A fiber-optic cable consists of a bundle of these threads - each of which is capable of transmitting data into light waves.






44. 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.






45. 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.






46. An international standards body that defines many networking standards. Also - the standards body that created the OSI model.






47. The table used by a switch or bridge that associates MAC addresses with the outgoing port. The switch or bridge uses this table for its forwarding/filtering decisions.






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






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






50. 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