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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 delineation of networking protocols and standards into different categories - called layers - along with definitions of which sets of standards and protocols need to be implemented to create products that can be used to create a working network






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






3. A unit of measurement of the number of times 1000 bits can be transmitted in 1 second. 1 kbps = 1000bps






4. The minimum time a NIC or interface can take to send an entire frame. Slot time - then - implies a minimum frame size.






5. 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






6. A numbering system characterized by 1 and 0






7. Media access methodology in which a node wishing to transmit listens for a carrier wave before trying to send. If a carrier is sensed - the node waits for the transmission in progress to finish before initiating its own transmission.






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. The lower of the two sublayers of the IEEE standard for ethernet. It is also the name of that sublayer






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






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






12. 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.






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






14. A group of 8 binary bits. It is similar to - but not the same as - a byte. One Application in computer network is to use octets to divide IPv4 addresses into four components






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






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






17. In a web browser - an application the browser uses - inside the browser window to display some types of content. For example - a browser typically uses a plug-in to display video.






18. 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.






19. A network topology characterized by a central location connected to multiple hubs. In an extended star - these interconnected hubs may be connected to more hubs. It is essentially a hierarchical topology but typically is drawn with the central site i






20. 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.






21. Represents the 0 in the binary number. In an IP subnet mask - the lower-order bits represent the host portion. Sometimes called the host portion of bits.






22. 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






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






24. 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






25. A special reserved IPv4 address - 127.0.0.1 that can be used to test TCP/IP applications. Packets sent to 127.0.0.1 by a computer never leave the computer or even require working NIC. Instead - the packet is processed by IP at the lowest layer and is






26. Devices at the user end of a user-network interface that serves as a data source - destination or both. DTE connects to a data network through a DCE device and typically uses clocking signals generated by the DCE. DTE includes such devices as compute






27. 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.






28. On a switch - a table that lists all known MAC addresses - and the bridges/switch port out which the bridge/switch should forward frames sent to each MAC address.






29. 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.






30. 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






31. 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.






32. 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.






33. A part of the ethernet frame that fills in the data field to ensure that the data field meets the minimum size requirement of 46 bytes.






34. The method of for finding a host's hardware address from its IPv4 network layer address.






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






36. 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.






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






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






39. 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.






40. 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.






41. A common name for ethernet technology that operates at 100 mbps.






42. 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.






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






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






45. 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






46. As filed in the TCP header that is set in a sent segment - signifies the maximum amount of unacknowledged data the host is willing to receive before the other sending host must wait for an acknowledgment.






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






48. 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.






49. 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






50. 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