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CCNA Network Fundamentals Vocab
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CCNA Network Fundamentals Vocab
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1. The minimum time a NIC or interface can take to send an entire frame. Slot time - then - implies a minimum frame size.

2. 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.

3. Computer hardware - typically used for LANS - that allows the computer to connect to some network cable. The NIC can then send and receive data over the cable at the direction of the computer.

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. 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.

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

7. 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.

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

9. A system of network design characterized by one or more major components that are required to maintain operation.

10. 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

11. Random-access memory that does not lose its contents when the computer is shut down

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

13. 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.

14. Using values between 1024 and 49 -151 these numbers are equivalent to well-known ports in concept - but they are specifically used for nonprivileged application processes.

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

16. 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

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

18. The networking layers whose processes are not affected by the media being used. In ethernet - these are all the layers from the LLC sublayer of data link upward.

19. 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.

20. Unique addresses that are public domain addresses.

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

22. 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

23. In a shared media ethernet network - a signal generated by the transmitting devices that detects the collision. The jam signal continue to transmit for a specified period to ensure that all devices on the network detect the collision. The jame signal

24. 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.

25. 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.

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