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






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






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






4. 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.






5. 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.






6. The extent of a certain item. For example - an address scope is also known as a range of addresses from beginning of the range to the end.






7. 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






8. 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.






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






10. As part of the TCP/IP internet layer - ICMP defines protocol messages used to inform network engineeres of how well an internetwork is working. For example - the ping command sends ICMP messages to determine whether a host can send packets ot another






11. 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






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. In TCP - the process of taking a large chunk of data and breaking it into small enough pieces to fit within a TCP segment without breaking any rules about the maximum amount of data allowed in a segment.






14. 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






15. 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.






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






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






18. The time that passes while some event occurs. In networking - latency typically refers to the time that occurs between when something is sent in a network until it is received by another device.






19. 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.






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






21. 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.






22. 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






23. 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.






24. 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.






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






26. The IEEE 802.2 standard that defines the upper sublayer of the Ethernet Layer 2 specifications.






27. 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






28. 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.






29. 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






30. A system of network design characterized by one or more major components that are required to maintain operation.






31. 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.






32. 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.






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






34. 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.






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






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






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






38. 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.






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






40. 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.






41. 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






42. 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






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






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






45. A grouping of code that meets a certain - already specified - condition for entering in that certain group.






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






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






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






49. In networking - a symbol used when drawing network diagrams that represent a part of the network whose details can be ignored for the purposes of the diagram.






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