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






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






3. 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






4. 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.






5. 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.






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






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






8. The process by which a router receives an incoming frame - discards the ata link header and trailer - makes a forwarding decision based on the destination IP address - adds a new data-link header and trailer based on the outgoing interface and forwar






9. 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






10. Translation RFC 1918 addresses to public domain addresses. Because RFC 1918 addresses are not routerd on the Internet - hosts accessing the Internet must use public domain addresses.






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






12. A 1-bit flag in the tcp header that indicates the acknowledgment field is valid.






13. 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






14. 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.






15. A network architecture designed to eliminate network downtime cause by a single point of failure.






16. Part of a company's intranet that is extended to users outside the company






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






18. 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.






19. 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






20. 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.






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






22. 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.






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






24. 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.






25. 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.






26. An access method used with some LAN technologies by which devices access the media in a controlled manner. This access to the LAN is managed using a small frame called a toke. A device can send only when it has claimed the use of the token.






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






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






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






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






31. 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.






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






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






34. 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.






35. 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.






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






37. A control mechanism that can provide different priorities to different users or data flows - or guarantee a certain level of performance to a data flow in accordance with requests from the application program.






38. A logical network composed of all the computers and networking devices that can be reached by sending a frame to the data link layer broadcast address.






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






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






41. An address used to represent a transmission from one device to all devices. In ethernet - the sepcial ethernet address FFFF.FFFF.FFFF is used as a destination MAC address to cause a frame to be sent to all devices on an ethernet LAN. In IPV4 - each s






42. A request for information. Queries are answered with replies.






43. 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






44. 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.






45. 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






46. A field in the IP header that prevents a packet form indefinitely looping around an IP internetwork. Router decrements the TTL field each time they forward a packet - and if they decrement the TTL to 0 - the router discards the packet - which prevent






47. 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






48. 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






49. In ethernet - the results of two nodes transmitting simlutaneously. The signals from each device are damaged when they combine on the media






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