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






2. 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






3. An international standards body that defines many networking standards. Also - the standards body that created the OSI model.






4. In the telnet application - commands are always introduced by a character with the decimal code 255 - known as the Interpret as Command character.






5. 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.






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






7. The optical or electrical impulse on a physical medium for purposes of communication.






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






9. A port on cisco devices to which a terminal or computer with a terminal emulator is connected to the network device in order to communicate and configure the network device






10. 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






11. To transfer data from the computer functioning as a server to the client computer you are using.






12. A protocol used between routers so that they can learn routes to add to their routing tables.






13. 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.






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






15. 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.






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






17. Also known as boolean algebra. These consist of the AND OR and IF operations






18. An ethernet frame that is less than 64 bytes in size. Runts are caused by collisions and are also know as collision fragments






19. 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.






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






21. 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.






22. 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.






23. 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.






24. 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.






25. A device on a network that serves as an access point to other networks. A default gateway is used by a host to forward IP packets that have destination addresses outside the local subnet. A router interface typically is used as the default gateway. W






26. 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.






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






28. 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.






29. The reference to text based logical interfaces on an ios device. These are accesses using telnet or ssh to perform administrative tasks. VTY lines are also called virtual type terminal.






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






31. 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.






32. 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.






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






34. 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.






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






36. 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.






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






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






39. A network model defined by the IETF that has been implemented on most computers and network device in the world.






40. 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.






41. 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.






42. 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.






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






44. Defines which wires in a cable should connect to each pin on the connectors on both ends of a cable. For example - a UTP cable used for ethernet - used for a straight-through cable pinout - connects the wire at pin 1 on one end with the pin 1 on the






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






46. A process used by a switch or bridge to forward broadcasts and unknown destination unicasts. The bridge/switch forwards these frames out all ports except the port on which the frame was received.






47. 1. a collision domain that is a section of a LAN that is bound by bridges - routers or switches. 2. In a LAN using a bus topology - a segment is a continuous electrical circuit that is often connected to other such segments with repeaters. 3. When us






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. A method of internal processing by LAN switches. The switch must receive the entire frame before it sends the first bit of the frame. Store and forward switch is the method used by cisco switches.






50. A logical storage in a host's RAM to store arp entries.