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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 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






2. A 1-bit flag in the TCP header that is used to request that a connection be re-established.






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






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






5. 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






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






7. 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.






8. The connection of devices on a common media. Sometimes a physical network is also referred to as a network segment.






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






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






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






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






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






14. An internationally recognized definition of technical specifications that ensure worldwide consistency.






15. The IPv4 multicast addresses 224.0.0.0 to 224.0.0.255. These addresses are to be used for multicast groups on a local network. Packets to these destinations are always transmitted with a TTTL value of 1






16. 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.






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






18. In networking - a measurement of the speed of bits that can be transmitted over a particular link. It is the amount of data that can be transmitted in a certain amount of time. For digital bandwidth it is usually expressed in bits per second.






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






20. In networking - this term is used in several ways. With ethernet hub and switch hardware - port is simply another name for interface - which is a physical connector in the swithc into whic a cable can be connected. With TCP and UDP - a port is a soft






21. A protocol that allows a computer to retrieve email from a server.






22. A network topology characterized by a central location connected to multiple hubs. In an extended star - these interconnected hubs may be connected to more hubs. It is essentially a hierarchical topology but typically is drawn with the central site i






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






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






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






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






28. The origin of the PDU. This can be a process a host or a node - depending on the layer to which you are reffering.






29. A 1-bit field in the TCP header that is used by a device that wants to terminate its session with the other device. This is done by inserting the FIN flag in the flag field found in the TCP segment






30. 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






31. 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.






32. A temporary storage where data that has been retrieved or calculated and is accessed frequently can be stored. After the data is stored in the cache - the processes can access the cached copy instead of accessing the original data. A cache reduces th






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. 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.






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






36. Devices at the user end of a user-network interface that serves as a data source - destination or both. DTE connects to a data network through a DCE device and typically uses clocking signals generated by the DCE. DTE includes such devices as compute






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






38. 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






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. 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






41. Organizations that are responsible for the allocation and registration of Internet number resources within a particular region of the world. These registries include the American Registry for Internet Number for North America; RIPE network coordinati






42. Path through an internetwork through which packets are forwarded.






43. A network created for devices located in a limited geographic area - through which the company owning the LAN has the right to run cables.






44. 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






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






46. The process of forwarding frames in a switch or a bridge from one port to another port or from segment to segment






47. 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.






48. 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






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






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