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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 process of obscuring information to make it unreadable without special knowledge - somtimes referred to as scrambling. The process takes the data to be encrypted and applies a mathematical formula to it along with a secret number. The resulting v






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






3. The IP address of the originating host that is placed into the IP packet header.






4. A device such as a desktop or mobile device that is used by an end user.






5. 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.






6. 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






7. In ethernet - a device that receives an electrical signal in one port - interprets the bits and regenerates a clean signal that it sends out all other ports of the hub. Typically it also supplies several ports - which are oftentimes RJ-45 jacks.






8. A name - as defined by DNS that uniquely identifies a computer in the internet. DNS servers can then respond to the DNS requests by supplying the IP address that is used by the computer that has a particular domain name. This term also refers to the






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






10. 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.






11. The learning of source addresses on incoming frames and adding them to the bridging table. After the table has been completed and when a frame is received on one of the bridge's interfaces - the bridge looks up the frame's destination address in its






12. Real-time communication between two or more people through text. The text is conveyed through computers connected over a network such as the internet. files can also be transferred through the IM program to share files.






13. 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.






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






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






16. 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.






17. Ethernet that transmits data at 1 -000 -000 -000 one billion bits per second.






18. 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






19. 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






20. A list of router holds in memory for the purpose of deciding how to forward packets.






21. 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






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






23. 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






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






25. 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






26. 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






27. 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.






28. A host or node that participates in some form of a group. For example - p2p technology defines a group of peers that participate jointly in the same activity - each one having a server and client component.






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






30. The table used by a switch that associates MAC addresses with the outgoing port. A general term for the table that a LAN bridge uses for its forwarding/filtering decisions. The table holds a list of MAC addresses and the port out which the bridge sho






31. 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.






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






33. A 32-bit field in the tcp segment header that specifies the sequence number of the next byte this host expects to receive as a part of the TCP session. It is used to recognize lost packets and flow control






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






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






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






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






38. 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.






39. 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.






40. A process where multiple digital data streams are combined into one signal.






41. 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.






42. 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.






43. 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






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






45. IPv4 address of a network host. When talking about host addresses - they are the network layer addresses.






46. 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






47. A source of information that is highly reliable and known for its accuracy






48. A numbering system characterized by 1 and 0






49. 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.






50. Unencrypted password used to allow access to privledge EXEC mode from IOS user EXEC mode.