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Test your basic knowledge |
Wide Area Netwoking Protocols
Start Test
Study First
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. What is the reason why the serial link between the Corp router and the Remote router will not come up?
The layer 2 frame types are not compatible
Point-to-Point Protocol (PPP)
Demarcation point
High-Level Data Link Control (HDLC) protocol
2. What are the two PPP authentication methods?
PPP
High-Level Data Link Control (HDLC) protocol
Point-to-Point Protocol (PPP)
PAP and CHAP
3. What is a good command to verify your serial interface on a router?
Show interface
HDLC - Frame Relay - PPP
Asynchronous Transfer Mode (ATM)
Link establishment - Authentication phases (optional) - Network layer protocol phase
4. Specifies an encapsulation method for data on synchronous serial data links using frame characters and checksums
Integrated Services Digital Network (ISDN)
Wide Area Network
Config t - interface serial 0 - encapsulation ppp
High-Level Data Link Control (HDLC) protocol
5. Proprietary
Asynchronous Transfer Mode (ATM)
Frame Relay
High-Level Data Link Control (HDLC) protocol
DCE network
6. What are the PPP Data Link protocols?
Supplied by the CSU/DSU
HDLC - LCP - NCP
Network control Protocol (NCP)
Frame Relay
7. Equipment that's owned by the subscriber and located on the subscriber's premises
High-Level Data Link Control (HDLC) protocol
Customer premises equipment (CPE)
High-Level Data Link Control (HDLC) protocol
Frame Relay
8. Uses the LCP (Link Control Protocol) to build and maintain data link connections
LCP
High-Level Data Link Control (HDLC) protocol
High-Level Data Link Control (HDLC)
Point-to-Point Protocol (PPP)
9. HDLC stands for what?
Network control Protocol (NCP)
Challenge Handshake Authentication Protocol (CHAP)
Authentication phase
High-Level Data Link Control
10. The spot where the service provider's responsibility ends and the CPE begins
Demarcation point
Challenge Handshake Authentication Protocol (CHAP)
Customer premises equipment (CPE)
High-Level Data Link Control (HDLC) protocol
11. 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
LAPD
Packet switching
High-Level Data Link Control (HDLC) protocol
Frame Relay
12. 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
HDLC
NCP
LAPD
Circuit switching
13. Write the command to see the encapsulation method on serial 0 of a Cisco router
Frame Relay
Point-to-Point Protocol (PPP)
Packet switching
Show interface serial 0
14. When PPP connections are started - the links go through three phases of session establishment. What are the three phases?
Link establishment - Authentication phases (optional) - Network layer protocol phase
Link establishment phase
Link Access Procedure - Balanced (LAPB)
Packet Switching - Circuit Switching - Leased Lines
15. Network Control Protocol (NCP) is used to allow multiple Network layer protocols (routed protocols) to be used on a point-to-point connection
Config t - interface serial 0 - encapsulation ppp
Username todd password cisco
Point-to-Point Protocol (PPP)
Demarcation point
16. Which type of port on a router is used for a T1?
Show interface
Wide Area Network
HDLC - Frame Relay - PPP
Serial
17. Nonproprietary
Point-to-Point Protocol (PPP)
Config t - interface serial 0 - encapsulation ppp
Demarcation point
LCP
18. Data Link and Physical layer specification that provides high performance; successor to X.25
Point-to-Point Protocol (PPP)
Packet switching
Frame Relay
PPP - HDLC - Frame Relay
19. Protocol stack is specified at the Physical and Data Link layers only
High-Level Data Link Control (HDLC) protocol
Authentication phase
Point-to-Point Protocol (PPP)
High-Level Data Link Control
20. Bit-oriented Data Link layer protocol
Packet switching
Point-to-Point Protocol (PPP)
Packet Switching - Circuit Switching - Leased Lines
High-Level Data Link Control (HDLC) protocol
21. Which is true regarding HDLC?
Leased lines
It is Cisco proprietary
High-Level Data Link Control (HDLC) protocol
LAPD
22. To connect two DTE networks together through a DCE network
High-Level Data Link Control (HDLC) protocol
Frame Relay
Wide Area Network (WAN)
High-Level Data Link Control (HDLC) protocol
23. Uses MD5 challange/response
Challenge Handshake Authentication Protocol (CHAP)
Link establishment - Authentication phases (optional) - Network layer protocol phase
LAPD
High-Level Data Link Control
24. This point connects the customers to the provider's switching network
Central office (CO) or point of presence (POP)
Point-to-Point Protocol
Toll network
Show interface
25. Uses the Network Control Protocol (NCP) to allow multiple Network layer protocols to be encapsulated and sent over a PPP data link
Network layer protocol phase
Integrated Services Digital Network (ISDN)
Show interface
It is Cisco proprietary
26. Used with ISDN at the Data Link layer (layer 2) as a protocol for the D (signaling) channel
CSU/DSU
Local loop
Link Access Procedure - D-Channel (LAPD)
HDLC - Frame Relay - PPP
27. Serial interfaces by default; connect into data communication equipment (DCE)
Wide Area Network (WAN)
Point-to-Point Protocol (PPP)
data terminal equipment (DTE)
Link establishment - Authentication phases (optional) - Network layer protocol phase
28. Connects the demarc to the closest switching office - called a central office
Local loop
CSU/DSU
Link establishment phase
data terminal equipment (DTE)
29. Which PPP protocol provides link establishment?
Password Authentication Protocol (PAP)
Config t - interface serial 0 - encapsulation ppp
Authentication phase
LCP
30. If you have a T1 - what must you connect from your router to a demarc?
Packet Switching - Circuit Switching - Leased Lines
CSU/DSU
Demarcation point
High-Level Data Link Control (HDLC) protocol
31. 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
Link Access Procedure - Balanced (LAPB)
LAPD
Customer premises equipment (CPE)
Point-to-Point Protocol
32. If required - either CHAP or PAP can be used to authenticate a link
Supplied by the CSU/DSU
Packet switching
Authentication phase
Config t - interface serial 0 - encapsulation ppp
33. Physical layer international standard for serial communication
EIA/TIA-232-C - V.24 - V.35 - and ISDN
Username todd password cisco
HDLC - PPP - and Frame Relay
LCP
34. What are common Data Link WAN encapsulations?
Leased lines
HDLC
HDLC - PPP - and Frame Relay
HDLC - Frame Relay - PPP
35. Can encapsulate several layer 3 routed protocols and provide authentication - dynamic addressing - and callback
Point-to-Point Protocol (PPP)
Encapsulation ppp
Password Authentication Protocol (PAP)
Serial
36. A point-to-point protocol used on leased lines
High-Level Data Link Control (HDLC) protocol
Asynchronous Transfer Mode (ATM)
HDLC
Packet switching
37. Which of the following protocols are used with ISDN as an out-of-band protocol?
Asynchronous Transfer Mode (ATM)
LCP
LAPD
Point-to-Point Protocol
38. 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)
Show interface
DCE network
serial transmission
Integrated Services Digital Network (ISDN)
39. Less secure; Passwords are sent in clear text
Show interface
PAP and CHAP
Demarcation point
Password Authentication Protocol (PAP)
40. Which encapsulations can be configured on a serial interface? (Choose three.)
HDLC - Frame Relay - PPP
Link establishment - Authentication phases (optional) - Network layer protocol phase
High-Level Data Link Control (HDLC)
High-Level Data Link Control (HDLC)
41. Data Link layer protocol that can be used over either asynchronous serial (dial-up) or synchronous serial (ISDN) media
Leased lines
Wide Area Network (WAN)
Point-to-Point Protocol (PPP)
High-Level Data Link Control (HDLC)
42. One bit at a time over a single channel
Wide Area Network
Link establishment phase
HDLC - Frame Relay - PPP
serial transmission
43. WAN stands for?
Point-to-Point Protocol
Packet Switching - Circuit Switching - Leased Lines
LCP
Wide Area Network
44. How do you configure a serial interface to use PPP encapsulation?
Config t - interface serial 0 - encapsulation ppp
Encapsulation ppp
Point-to-Point Protocol (PPP)
Challenge Handshake Authentication Protocol (CHAP)
45. When a router is connected to a Frame Relay WAN link using a serial DTE interface - how is the clock rate determined?
High-Level Data Link Control (HDLC) protocol
Link Control Protocol (LCP)
Wide Area Network
Supplied by the CSU/DSU
46. 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
Challenge Handshake Authentication Protocol (CHAP)
Supplied by the CSU/DSU
Frame Relay
High-Level Data Link Control (HDLC)
47. A trunk line inside a WAN provider's network; a collection of switches and facilities owned by the ISP
Toll network
Wide Area Network
Point-to-Point Protocol (PPP)
PPP - HDLC - Frame Relay
48. 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
LCP
Point-to-Point Protocol (PPP)
LAPD
High-Level Data Link Control (HDLC) protocol
49. 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
Show interface
Leased lines
HDLC
PPP
50. Which of the following encapsulations was considered an upgrade from x.25?
Toll network
Challenge Handshake Authentication Protocol (CHAP)
Frame Relay
Point-to-Point Protocol (PPP)