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Wide Area Netwoking Protocols
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Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
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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 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)
HDLC
LAPD
data terminal equipment (DTE)
2. Which type of port on a router is used for a T1?
Packet switching
Serial
PAP and CHAP
Link Access Procedure - Balanced (LAPB)
3. Method of establishing and configuring different Network layer protocols
Username todd password cisco
High-Level Data Link Control
Network control Protocol (NCP)
HDLC
4. 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
Leased lines
High-Level Data Link Control (HDLC) protocol
Point-to-Point Protocol (PPP)
High-Level Data Link Control
5. Designed to allow the simultaneous use of multiple Network layer protocols
Customer premises equipment (CPE)
Network control Protocol (NCP)
High-Level Data Link Control (HDLC) protocol
Network layer protocol phase
6. If required - either CHAP or PAP can be used to authenticate a link
HDLC - LCP - NCP
High-Level Data Link Control
CSU/DSU
Authentication phase
7. 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
HDLC
Asynchronous Transfer Mode (ATM)
Frame Relay
data terminal equipment (DTE)
8. Which of that following is a packet-switching encapsulation?
Frame Relay
High-Level Data Link Control (HDLC) protocol
High-Level Data Link Control
Show interface serial 0
9. Which of the following are considered common Data Link WAN encapsulation types? (Choose three.)
CSU/DSU
NCP
High-Level Data Link Control (HDLC) protocol
PPP - HDLC - Frame Relay
10. LCP packets are sent by each PPP device to configure and test the link
Network layer protocol phase
Frame Relay
Wide Area Network
Link establishment phase
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
Packet switching
Circuit switching
Encapsulation ppp
Username todd password cisco
12. WAN stands for?
High-Level Data Link Control (HDLC) protocol
Link establishment - Authentication phases (optional) - Network layer protocol phase
Frame Relay
Wide Area Network
13. Serial interfaces by default; connect into data communication equipment (DCE)
data terminal equipment (DTE)
Circuit switching
Config t - interface serial 0 - encapsulation ppp
LCP
14. Bit-oriented Data Link layer protocol
Link establishment - Authentication phases (optional) - Network layer protocol phase
High-Level Data Link Control (HDLC) protocol
NCP
Network control Protocol (NCP)
15. A point-to-point protocol used on leased lines
High-Level Data Link Control (HDLC) protocol
Password Authentication Protocol (PAP)
Network control Protocol (NCP)
Point-to-Point Protocol (PPP)
16. Method for encapsulating datagrams over serial links
HDLC - Frame Relay - PPP
Point-to-Point Protocol (PPP)
High-Level Data Link Control (HDLC)
Serial
17. If you have a T1 - what must you connect from your router to a demarc?
CSU/DSU
Link Access Procedure - Balanced (LAPB)
Username todd password cisco
Show interface
18. Protocol stack is specified at the Physical and Data Link layers only
Point-to-Point Protocol (PPP)
Wide Area Network
Serial
Frame Relay
19. Physical layer international standard for serial communication
Integrated Services Digital Network (ISDN)
EIA/TIA-232-C - V.24 - V.35 - and ISDN
The layer 2 frame types are not compatible
Point-to-Point Protocol (PPP)
20. When PPP connections are started - the links go through three phases of session establishment. What are the three phases?
Customer premises equipment (CPE)
LAPD
The layer 2 frame types are not compatible
Link establishment - Authentication phases (optional) - Network layer protocol phase
21. 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
NCP
Point-to-Point Protocol (PPP)
High-Level Data Link Control (HDLC) protocol
serial transmission
22. Connects the demarc to the closest switching office - called a central office
High-Level Data Link Control (HDLC)
Local loop
Link establishment phase
Password Authentication Protocol (PAP)
23. Method of establishing - configuring - maintaining - and terminating the point-to-point connection
NCP
CSU/DSU
Show interface
Link Control Protocol (LCP)
24. Write the commands to configure s0 to PPP encapsulation
Integrated Services Digital Network (ISDN)
Network layer protocol phase
High-Level Data Link Control
Config t - interface serial 0 - encapsulation ppp
25. What are common Data Link WAN encapsulations?
Point-to-Point Protocol
LAPD
HDLC - PPP - and Frame Relay
PAP and CHAP
26. Can encapsulate several layer 3 routed protocols and provide authentication - dynamic addressing - and callback
High-Level Data Link Control (HDLC)
Link Control Protocol (LCP)
Network control Protocol (NCP)
Point-to-Point Protocol (PPP)
27. Equipment that's owned by the subscriber and located on the subscriber's premises
Frame Relay
Central office (CO) or point of presence (POP)
Customer premises equipment (CPE)
Link establishment - Authentication phases (optional) - Network layer protocol phase
28. Data Link and Physical layer specification that provides high performance; successor to X.25
PAP and CHAP
The layer 2 frame types are not compatible
Point-to-Point Protocol
Frame Relay
29. A set of digital services that transmit voice and data over existing phone lines
DCE network
Integrated Services Digital Network (ISDN)
It is Cisco proprietary
Username todd password cisco
30. Less secure; Passwords are sent in clear text
Config t - interface serial 0 - encapsulation ppp
Password Authentication Protocol (PAP)
Show interface serial 0
Packet Switching - Circuit Switching - Leased Lines
31. Which of the following encapsulations was considered an upgrade from x.25?
Point-to-Point Protocol (PPP)
Frame Relay
Packet switching
Integrated Services Digital Network (ISDN)
32. Uses MD5 challange/response
Show interface
The layer 2 frame types are not compatible
Challenge Handshake Authentication Protocol (CHAP)
Frame Relay
33. What is the default serial encapsulation on a Cisco router?
Toll network
High-Level Data Link Control (HDLC) protocol
Local loop
HDLC
34. What are the two PPP authentication methods?
PAP and CHAP
Frame Relay
Frame Relay
High-Level Data Link Control (HDLC) protocol
35. 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
Packet Switching - Circuit Switching - Leased Lines
Point-to-Point Protocol (PPP)
Frame Relay
High-Level Data Link Control (HDLC)
36. How do you configure a serial interface to use PPP encapsulation?
Frame Relay
Frame Relay
Central office (CO) or point of presence (POP)
Encapsulation ppp
37. To transport layer 3 packets across a Data Link layer point-to-point link
Leased lines
Show interface serial 0
Point-to-Point Protocol (PPP)
NCP
38. Proprietary
Point-to-Point Protocol (PPP)
High-Level Data Link Control (HDLC) protocol
Point-to-Point Protocol (PPP)
Packet Switching - Circuit Switching - Leased Lines
39. Which of the following protocols are used with ISDN as an out-of-band protocol?
CSU/DSU
It is Cisco proprietary
High-Level Data Link Control (HDLC) protocol
LAPD
40. When a router is connected to a Frame Relay WAN link using a serial DTE interface - how is the clock rate determined?
Packet Switching - Circuit Switching - Leased Lines
HDLC - LCP - NCP
Supplied by the CSU/DSU
High-Level Data Link Control (HDLC) protocol
41. Nonproprietary
HDLC
Point-to-Point Protocol (PPP)
High-Level Data Link Control (HDLC) protocol
Encapsulation ppp
42. Which are considered WAN connection types? (Choose three.)
Authentication phase
Network control Protocol (NCP)
Network layer protocol phase
Packet Switching - Circuit Switching - Leased Lines
43. The default encapsulation used by Cisco routers over synchronous serial links
High-Level Data Link Control (HDLC) protocol
HDLC - LCP - NCP
Central office (CO) or point of presence (POP)
Demarcation point
44. What does PPP mean?
HDLC
High-Level Data Link Control (HDLC) protocol
DCE network
Point-to-Point Protocol
45. Data Link layer protocol that can be used over either asynchronous serial (dial-up) or synchronous serial (ISDN) media
Authentication phase
High-Level Data Link Control (HDLC)
Point-to-Point Protocol (PPP)
It is Cisco proprietary
46. What are the PPP Data Link protocols?
Point-to-Point Protocol (PPP)
HDLC - Frame Relay - PPP
HDLC - LCP - NCP
High-Level Data Link Control (HDLC) protocol
47. Which encapsulations can be configured on a serial interface? (Choose three.)
Link Access Procedure - Balanced (LAPB)
Point-to-Point Protocol (PPP)
HDLC - Frame Relay - PPP
Challenge Handshake Authentication Protocol (CHAP)
48. Used with ISDN at the Data Link layer (layer 2) as a protocol for the D (signaling) channel
Link Access Procedure - D-Channel (LAPD)
HDLC
Show interface
High-Level Data Link Control (HDLC) protocol
49. Which Data Link encapsulation can be used if you have one free serial interface and many remote offices to connect?
Point-to-Point Protocol (PPP)
Frame Relay
Point-to-Point Protocol (PPP)
Link Access Procedure - Balanced (LAPB)
50. Which is true regarding HDLC?
Authentication phase
It is Cisco proprietary
Frame Relay
Integrated Services Digital Network (ISDN)
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