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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 host or node that participates in some form of a group. For example - p2p technology defines a group of peers that participate jointly in the same activity - each one having a server and client component.






2. 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






3. Data link layer term describing a device connected to a network.






4. 1.collection of computers - printers - routers - switches - and other devices that can communication with each other over some transmission medium. 2. command that assgins a NIC based address to which the router is directly connected.






5. 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.






6. 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






7. 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.






8. 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.






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






10. 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






11. 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.






12. A computer program that runs in the background and is usually initiated as a process. Daemons often support server processes.






13. In networking - this term is used in several ways. With ethernet hub and switch hardware - port is simply another name for interface - which is a physical connector in the swithc into whic a cable can be connected. With TCP and UDP - a port is a soft






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






15. 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






16. 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






17. A device such as a desktop or mobile device that is used by an end user.






18. 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.






19. A removable component that has memory space for storage. Used on the router or switch for storing the compressed operating system image.






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






21. 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






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






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






24. 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






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






26. The first half of a MAC address. Manufactures must ensure that the value of the OUI has been registered with the IEEE. This value identifies the manufacturer of any Ethernet NIC or interface.






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






28. 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.






29. A protocol for synchronizing the clocks of computer systems over packet-switch data networks. NTP uses UDP port 123 as its transport layer.






30. A collection of data that establishes a reference for network performance and behavior over a period of time. This reference data is used in the future to assess the health and relative growth of network utilization.






31. 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.






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






33. A generic term from OSI that refers to the data - headers - and trailers about which a particular network layer is concerned.






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 physical or a logical area in a LAN where the signals sent by the interfaces ma be subject o being combined. Within a collision domain - if a device sends a frame on a network segment - every other device on that same segment will receive that fram






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






37. 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.






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






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






40. An organization that assigns the numbers important to the proper operation of the TCP/IP protocol and the Internet - including assigning globally unique IP addresses.






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






42. When used generically - this term refers to end-user data along with networking headers and trailers that are transmitted through a network. When used specifically - it is end-user data - along with the network or Internet layer headers and any highe






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






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






45. 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






46. The retransmission delay used with CSMA/CD when a collision occurs. The algorithm forces each sender that detected the collisions to delay a random amount of time before attempting to retransmit.






47. A general type of cable - with the cable holding twisted pairs of copper wires and the cable itself having little shielding.






48. The table used by a switch that associates MAC addresses with the outgoing port. A general term for the table that a LAN bridge uses for its forwarding/filtering decisions. The table holds a list of MAC addresses and the port out which the bridge sho






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






50. A numbering system characterized by 1 and 0