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






2. Interface by magnetic signals caused by the flow of electricity. EMI can cause reduced data integrity and increased error rates on transmission channels. The physics of this process are that electrical current creates magnetic fields - which in turn






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






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






5. The loss of communication signal on the media. This loss is due to degradation of the energy wave over time.






6. Data that directs a process. a flag in a data-link frame is an example of control data.






7. A device that connects end devices to the network or interconnects different networks. A router is an example of an intermediary device.






8. A device that connects to a local digital telephone loop for a WAN circuit to a serial interface on a network device - typically connecting to a router. The CSU/DSU performs physical Layer 1 signaling on WAN circuits






9. Application-level throughput. It is the number of useful bits per unit of time from a certain source address to a certain destination - excluding protocol overhead and excluding retransmitted data packets.






10. The normal operation of ethernet ports on a hub. In this mode - the mapping of the wire pairs in the hub port is in a normal configuration. Some hubs provide a media-dependent interface/media-dependent interface - crossover switch. This switch is usu






11. A group defined by a class D address (multicast - ranging from 224.0.0.0 to 239.255.255.255) - whereupon hosts can pertain to multicast groups. Hosts that have the same multicast address are part of the same host group.






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






13. Binary digit used in the binary numbering system. Binary digits are units of information storage and communication in computing. Each bit can be either a 0 or a 1.






14. 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






15. The spreading of light signal caused by light signals traveling at different speeds through a fiber.






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






17. 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






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






19. 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






20. Can refer to computer hardware that is to be used by multiple concurrent users. Alternatively - this term can refer to computer software that provides services to many users. For example - a web server consists of web server software running on some






21. 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.






22. The limited CLI mode where the commands available to the user are a subset of those available at the privileged level. In general - use the user Exec commands to temporarily change terminal settings - perform basic tests and list system information.






23. 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.






24. A convention for writing IP addresses with four decimal numbers - ranging from 0 to 255 - with each octet representing 8 bits of the 32 bit IP address. The term originates from the fact that each of the four decimal numbers is separated by a period.






25. 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.






26. 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.






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






28. Any communication in which the sender and receiver do not prearrange for communications to occur






29. 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






30. 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






31. The passage of a data packet between two network nodes.






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






33. A unicast IP address that is considered to have three parts: a network part - a subnet part - and a host part. The term classful refers to the fact that classful network rules are first applied to the address - and then the rest of the address can be






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






35. In LAN switches a reference to cases in which a frame is forwarded - or switche - when the incoming and outgoing interfaces use the same speed. It is the opposite of asymmetric switching.






36. Communication that only allows one station to receive while the other station is transmitting






37. A type of network cabling that includes twisted-pair wires - with shielding around each pair of wires - as well as another shield around all wires in the cable.






38. 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.






39. 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.






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






41. 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.






42. The process by which a device adds networking heads and trailers to data from an application for the eventual transmission of the data onto a transmission medium.






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






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






45. An internet wide system by which a hierarchical set of DNS servers collectively hold all the name IP address mappings - with DNS servers referring users to the correct DNS server to successfully resolve a DNS name.






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






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






48. 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.






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






50. A process that uses the same ARP messages as a normal ARP - but by which a router replies instead of the host listed in the ARP request. When a router sees an ARP request that cannot reach the intended host - but for which the router knows a route to