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CCNA Network Fundamentals Vocab

Subjects : cisco, it-skills, ccna
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 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.






2. The time that passes while some event occurs. In networking - latency typically refers to the time that occurs between when something is sent in a network until it is received by another device.






3. Network protocols or technologies that do not use the acknowledgment system to guarantee reliable delivery of information






4. 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.






5. The portion of a binary number that carries the most weight - the one written farthest to the left. High-order bits are the 1s in the network mask.






6. 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.






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






8. Refers to whether the performance of a device - attached to a particular type of LAN - can be accurately predicted. Token Ring LANS are deterministic - but ethernet LANS are non deterministic.






9. 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.






10. 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.






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






12. A model that consists of various layers that enable the development and explanation of technology to be done on a modular basis. This allows interoperability among different technologies among the different layers.






13. An application level network protocl mainly applied to shared access to files - printers - serial ports - and miscellaneous communications between nodes on a network.






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






15. 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






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






17. The forwarding of packets where the forwarding decision is taken dynamically - hop by hop - based on the conditions of downstream fowrading nodes.






18. A series of documents and memoranda encompassing new research - innovations and methodologies applicable to Internet technologies. RFCs are a reference for how technologies should work.






19. 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






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






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






22. 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.






23. A device that connects multiple network segments at the data link layer of the OSI model. Bridges were the predecessor to LAN switches.






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






25. A 1-bit flag in the TCP header used to indicate that the receiving host should notify the destination process to do urgent processing.






26. 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






27. A network with a geographic size between a LAN and a WAN. Typically used by service providers to create a highspeed network in a major metropolitan area where many customers might want high speed services between large sites around a city.






28. 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






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






30. The bit position in a binary number having the greatest value. The most significant bit is sometime referred to as the leftmost bit.






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






32. 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.






33. 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






34. The IPv4 address block 192.0.2.0 to 192.0.2.255 that is set aside for teaching and learning purposes. These addresses can be used in documentation and network examples.






35. 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.






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






37. A MAC address that can be configured on a device. The LAA can be used in place of the BIA . This means that you can replace a NIC or use a substitute device without changing the address used by the network to access the station.






38. MDIX is an alternative operation of ethernet ports on a hub. In this mode - the mapping of the wire pairs used in the hub port is in a crossover configuration. This allows you to use a straight-through cable to interconnect the hub to another hub.






39. 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.






40. The actual data transfer rate between two computers at some point in time. Throughput is impacted by the slowest-speed link used to send data between the two computers - as well as myriad variables that might change during the course of a day.






41. 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.






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






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






45. 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.






46. The standards body responsible for the development and approval of TCP/IP standards






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






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






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






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







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