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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. Define in RFC 1918 - an IP address that does not have to be globally unique because the address exists inside packets only when the packets are inside a single private IP internetwork. Private IP addresses are popularly used in most company today - w






2. 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






3. 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.






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






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






6. 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






7. The first half of a MAC address. Manufactures must ensure that the value of the OUI has been registered with the IEEE. This value identifies the manufacturer of any Ethernet NIC or interface.






8. 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






9. 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






10. In the telnet application - commands are always introduced by a character with the decimal code 255 - known as the Interpret as Command character.






11. 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.






12. 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.






13. 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.






14. 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.






15. 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.






16. 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.






17. The client part of the DNS client server mechanism. A DNS resolver creates queries sent a across a network to a same server - interprets responses - and returns information to the requesting programs.






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






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






20. On a switch - a table that lists all known MAC addresses - and the bridges/switch port out which the bridge/switch should forward frames sent to each MAC address.






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






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






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






24. A logical storage in a host's RAM to store arp entries.






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






26. Routing table entry that is used to direct frames for which a next hop is not explicitly listed in the routing table. This route is used to forward a packet when no other known route exists for a give packet's destination address.






27. A port on cisco devices to which a terminal or computer with a terminal emulator is connected to the network device in order to communicate and configure the network device






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






29. 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.






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






31. 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.






32. A network device - typically connected to a range of LAN and WAN interfaces - that forwards packets based on their destination IP addresses.






33. 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.






34. In ethernet - the process performed by a bridge or switch when it decides that it should send a frame out another port.






35. 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.






36. 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






37. 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






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






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






40. 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.






41. A 1-bt flag in the TCP header used to indicate the initial value of the sequence number. The SYN flag is only set in the first two segments of the three-way TCP connection establishment sequence.






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






43. A network scanning technique used to identify which host IP addresses are operational.






44. 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.






45. 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.






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






47. The management of data flow between devices in a network. It is used to avoid too much data arriving before a device can handle it - causing data overflow.






48. Unique addresses that are public domain addresses.






49. 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.






50. 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.







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