Test your basic knowledge |

Wide Area Netwoking Protocols

Subject : it-skills
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. One bit at a time over a single channel






2. What is the default serial encapsulation on a Cisco router?






3. Specifies an encapsulation method for data on synchronous serial data links using frame characters and checksums






4. Equipment that's owned by the subscriber and located on the subscriber's premises






5. When a router is connected to a Frame Relay WAN link using a serial DTE interface - how is the clock rate determined?






6. Write the command to see the encapsulation method on serial 0 of a Cisco router






7. Used with ISDN at the Data Link layer (layer 2) as a protocol for the D (signaling) channel






8. Network Control Protocol (NCP) is used to allow multiple Network layer protocols (routed protocols) to be used on a point-to-point connection






9. This point connects the customers to the provider's switching network






10. Uses cells instead of packets that are a fixed 53 bytes long; can use isochronous clocking (external clocking) to help the data move faster; provides simultaneous transmission of voice - video - and data






11. A trunk line inside a WAN provider's network; a collection of switches and facilities owned by the ISP






12. If required - either CHAP or PAP can be used to authenticate a link






13. Data Link and Physical layer specification that provides high performance; successor to X.25






14. Which Data Link encapsulation can be used if you have one free serial interface and many remote offices to connect?






15. To connect two DTE networks together through a DCE network






16. Which of that following is a packet-switching encapsulation?






17. If you had one serial interface on your router and needed to connect many remote locations - which Data Link encapsulation should you use?






18. The default encapsulation used by Cisco routers over synchronous serial links






19. What does PPP mean?






20. To transport layer 3 packets across a Data Link layer point-to-point link






21. Uses MD5 challange/response






22. When PPP connections are started - the links go through three phases of session establishment. What are the three phases?






23. A set of digital services that transmit voice and data over existing phone lines






24. Data Link layer protocol that can be used over either asynchronous serial (dial-up) or synchronous serial (ISDN) media






25. What are the two PPP authentication methods?






26. What is the reason why the serial link between the Corp router and the Remote router will not come up?






27. Which of the following protocols are used with ISDN as an out-of-band protocol?






28. Which of the following encapsulations was considered an upgrade from x.25?






29. Proprietary






30. Less secure; Passwords are sent in clear text






31. A point-to-point protocol used on leased lines






32. Uses the LCP (Link Control Protocol) to build and maintain data link connections






33. Derived from Synchronous Data Link Control (SDLC); created by IBM as a Data Link connection protocol; very little overhead compared to LAPB; The HDLC header carries no identification of the type of protocol being carried inside the HDLC encapsulation






34. A point-to-point connection or dedicated connection; a pre-established WAN communications path from the CPE through the DCE switch to the CPE of the remote site - allowing DTE networks to communicate at any time with no setup procedures before transm






35. Connects the demarc to the closest switching office - called a central office






36. Physical layer international standard for serial communication






37. Allows you to share bandwidth with other companies to save money; a network that's designed to look like a leased line yet charges you (and costs) more like circuit switching; data transfers are bursty in nature; Frame Relay and X.25






38. Protocol stack is specified at the Physical and Data Link layers only






39. Which encapsulations can be configured on a serial interface? (Choose three.)






40. What is the default serial encapsulation used on Cisco routers?






41. WAN stands for?






42. Uses the Network Control Protocol (NCP) to allow multiple Network layer protocols to be encapsulated and sent over a PPP data link






43. What are the PPP Data Link protocols?






44. Which PPP protocol provides link establishment?






45. Write the commands to configure s0 to PPP encapsulation






46. Which are considered WAN connection types? (Choose three.)






47. Which type of port on a router is used for a T1?






48. Serial interfaces by default; connect into data communication equipment (DCE)






49. What are common Data Link WAN encapsulations?






50. If you have a T1 - what must you connect from your router to a demarc?