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






2. 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.






3. The number of various unique digits - including 0 that a positional number system uses to represent numbers. For example - in the binary system (base 2) the radix is 2. In the decimal system the radix is 10.






4. A numbering system characterized by 1 and 0






5. A logical connection between devices in which the frames are passed between the devices. Virtual circuits are independent of the physical structure and may be established through multiple physical devices.






6. 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.






7. 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






8. 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.






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






10. A 1-bit flag in the TCP header used to indicate that the receiving host should notify the destination process to do urgent processing.






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






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






13. A convention for writing IP addresses with four decimal numbers - ranging from 0 to 255 - with each octet representing 8 bits of the 32 bit IP address. The term originates from the fact that each of the four decimal numbers is separated by a period.






14. A network model defined by the IETF that has been implemented on most computers and network device in the world.






15. 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






16. Additional data that is provided with a command to provide information used by the execution of the command. IOS command arguments are entered at the CLI after the command






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






18. A member of a multicast group. Every multicast client in each group has the same IP address. Multicast addresses begin with 224... and end with 239...






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






20. 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.






21. 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.






22. A notification sent from one network device to another to confirm that some event has occured.






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






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






25. 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






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






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






28. 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






29. One of the three basic binary logic operations. ANDing yields the following result: 1 and 1 = 1 - 1 and 0 = 0 - 0 and 1 = 0






30. 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






31. 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.






32. 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.






33. Information systems that allow the creation of a document or documents that can be edited by more than one person in real time






34. A process by which an end device - after it receives data over some transmission medium - examines the headers and trailers at each successive higher layer - eventually handing the data to the correct application. Sometimes called de-encapsulation.






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






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. Part of a company's intranet that is extended to users outside the company






38. 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.






39. The time required to send a single bit over some transmission medium. The time can be calculated at 1/speed - where speed is the number of bits per second sent over the medium






40. A model that consists of various layers that enable the development and explanation of technology to be done on a modular basis. This allows interoperability among different technologies among the different layers.






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






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






43. 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.






44. A 32-bit field in the tcp segment header that specifies the sequence number of the next byte this host expects to receive as a part of the TCP session. It is used to recognize lost packets and flow control






45. Can refer to computer hardware that is to be used by multiple concurrent users. Alternatively - this term can refer to computer software that provides services to many users. For example - a web server consists of web server software running on some






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






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






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






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






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