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






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






3. 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






4. Communication that uses a common clocking signal. In most synchronous communicatino - one of the communicating devices generates a clock signal into the circuit. Additional timing information is not required in the header.






5. 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.






6. The management of data flow between devices in a network. It is used to avoid too much data arriving before a device can handle it - causing data overflow.






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






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






9. A rectangular cabling connector with eight pins - often used with ethernet cables.






10. 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






11. Program used to download and send email. Email clients use POP3 to receive emails and use SMTP to send emails. Also called an email client






12. A service or a program to look up information in the DNS






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






14. In ethernet - the process performed by a bridge or switch when it decides that it should not forward a frame out another port






15. 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.






16. 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.






17. A request for information. Queries are answered with replies.






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






19. In ethernet a layer 2 device that receives an electrical signal in one port - interprets the bits - and makes a filtering or forwarding decision about the frame. If it forward - it sends a regenerated signal. Switches typically have many physical por






20. A map of the devices on a network representing how the devices communcate with each other.






21. A name - as defined by DNS that uniquely identifies a computer in the internet. DNS servers can then respond to the DNS requests by supplying the IP address that is used by the computer that has a particular domain name. This term also refers to the






22. 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.






23. Normally - a relatively general term that refers to dfifferent kinds of networking devices. Historically - when routers were created - they were called gateways






24. 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.






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






26. 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.






27. 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.






28. A communication path over a medium used to transport information from a sender to a receiver. Multiple channels can be multiplexed over a single cable






29. 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.






30. A process where multiple digital data streams are combined into one signal.






31. The MAC algorithm used by ethernet devices in a shared media. The protocol requires a node wishing to transmit to listen for a carrier signal before trying to send. If a carrier is sensed - the node waits for transmission in progress to finish before






32. 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.






33. 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






34. 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.






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






36. A MAC address that can be configured on a device. The LAA can be used in place of the BIA . This means that you can replace a NIC or use a substitute device without changing the address used by the network to access the station.






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






38. 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.






39. An application level network protocl mainly applied to shared access to files - printers - serial ports - and miscellaneous communications between nodes on a network.






40. Routing that adjusts automatically to network topology or traffic changes.






41. Ethernet that transmits data at 1 -000 -000 -000 one billion bits per second.






42. 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






43. 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.






44. 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.






45. In networking - a measurement of the speed of bits that can be transmitted over a particular link. It is the amount of data that can be transmitted in a certain amount of time. For digital bandwidth it is usually expressed in bits per second.






46. 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.






47. 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.






48. A high-speed line or series of connections that forms a major pathway within a network. The term is often used to describe the main network connections comprising the Internet.






49. An application protocol typically not used by end users. Instead - it is used by the network management software and networking devices to allow a network engineer to monitor and troubleshoot network problems.






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