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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 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.






2. 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.






3. 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






4. Any combination of hardware device and/or software application designed to protect network devices from outside network users and/or malicious applications and files.






5. 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.






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






7. 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.






8. 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.






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






10. The glass fibers inside certain cables over which light is transmitted to encode 0 and 1






11. An addressing scheme in which a network is partitioned into sections - with the section identifier forming one part of each destination's address and the destination identifier forming another






12. 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.






13. A type of hash function that is used to produce a small - fixed size checksum of a block of data - such as a packet or a computer file. A CRC is computed and appended before transmission or storage - and verified afterward by the recipient to confirm






14. Routing table entry that is used to direct frames for which a next hop is not explicitly listed in the routing table. This route is used to forward a packet when no other known route exists for a give packet's destination address.






15. 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.






16. The process of forwarding frames in a switch or a bridge from one port to another port or from segment to segment






17. Define in RFC 1918 - an IP address that does not have to be globally unique because the address exists inside packets only when the packets are inside a single private IP internetwork. Private IP addresses are popularly used in most company today - w






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






19. 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.






20. 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.






21. Binary digit used in the binary numbering system. Binary digits are units of information storage and communication in computing. Each bit can be either a 0 or a 1.






22. 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.






23. A form of signal modulation where the message information is encoded in the amplitude of series of signal pulses. It transmits data by varying the aplitunes of the individual pulses. This is now obsolete and has been replaced by pulse code modulation






24. 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






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






26. International standardization program created by ISO and ITU-T to develop standards for data networking that facilitate multivendor equipment interoperability






27. A unicast IP address that is considered to have three parts: a network part - a subnet part - and a host part. The term classful refers to the fact that classful network rules are first applied to the address - and then the rest of the address can be






28. A popular certification method for fiber systems. The OTDR injects light into the fiber and then graphically displays the results of the detected reflected light. The OTDR measures the elapsed transit time of reflected light to calculate the distance






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






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






31. 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






32. MDIX is an alternative operation of ethernet ports on a hub. In this mode - the mapping of the wire pairs used in the hub port is in a crossover configuration. This allows you to use a straight-through cable to interconnect the hub to another hub.






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






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






35. 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.






36. The largest IP packet size allowed to be sent out a particular interface. Ethernet interfaces default to an MTU of 1500 because the data field of an Ethernet frame should be limited to 1500 bytes - and the IP packet sits inside the ethernet frame's d






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






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






39. Communication that allows receipt and transmission simultaneously. A station can transmit and receive at the same time. There are no collisions with full-duplex ethernet transmision.






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






41. A company that helps create the Internet by providing connectivity to enterprises and individuals - as well as interconnecting to other ISPs to create connectivity to all other ISPs.






42. 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.






43. The time required for some network pdu's to be sent and received - and a response PDU to be sent and received. In other words - the time between when a device sends data and when the same device receives a response.






44. 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.






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






46. 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.






47. Defines the commands - headers and processes by which web server and web browsers transfer files.






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






49. A data link layer address - for example a MAC address






50. 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.







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