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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. 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






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






3. Can encapsulate several layer 3 routed protocols and provide authentication - dynamic addressing - and callback






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






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






6. A connection-oriented protocol at the Data Link layer for use with X.25; causes a tremendous amount of overhead because of its strict time-out and windowing techniques; can also be used as a simple data link transport






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






8. Uses dial-up modems or ISDN and is used for low-bandwidth data transfers; No data can transfer before an end-to-end connection is established






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






10. Includes the area from the CSU/DSU - through the provider's wiring and switches - all the way to the CSU/DSU at the other end; provides clocking to the DTE-connected interface (the router's serial interface)






11. LCP packets are sent by each PPP device to configure and test the link






12. Designed to allow the simultaneous use of multiple Network layer protocols






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






14. Uses MD5 challange/response






15. What is a good command to verify your serial interface on a router?






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






17. What does PPP mean?






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






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






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






21. Method for encapsulating datagrams over serial links






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






23. The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols - needs authentication of users connecting to the network - and - since some calls wil






24. Write the commands to configure a username of todd and password of cisco that is used on a Cisco router






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






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






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






28. Which protocol in PPP is used to identify the routed protocols?






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






30. What are common Data Link WAN encapsulations?






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






32. Used to create point-to-point links between different vendors' equipment; uses a Network Control Protocol field in the Data Link header to identify the Network layer protocol; allows authentication and multilink connections and can be run over asynch






33. Write the commands to configure s0 to PPP encapsulation






34. What are the PPP Data Link protocols?






35. WAN stands for?






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






37. 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






38. 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






39. Which is true regarding HDLC?






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






41. 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






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






43. One bit at a time over a single channel






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






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






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






47. No authentication






48. Less secure; Passwords are sent in clear text






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






50. How do you configure a serial interface to use PPP encapsulation?







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