WAN 2

Del Sutton
Quiz by Del Sutton, updated more than 1 year ago
Del Sutton
Created by Del Sutton almost 6 years ago
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Description

Quiz on WAN 2, created by Del Sutton on 04/23/2015.

Resource summary

Question 1

Question
Check the protocols and statements that relate correctly to PPP
Answer
  • • IP Connection Protocol (IPCP) is responsible for the transporting of TCP and UDP sessions across the PPP link and the verification of the successful interconnection. IPCP packet may not be exchanged until PPP has reached the Network-Layer may not be exchanged until PPP has reached this phase is reached should be silently discarded.
  • • Layer Connection Protocol(LCP) is used to automatically agree upon the encapsulation format options, handle varying limits on sizes of packets, detect a looped-back link and other common miss configuration errors, and terminate the link. Other optional facilities provided are authentication of the identity of its peer on the link, and determination when a link is functioning properly and when its failing.
  • • Link Control Protocol(LCP) is used to automatically agree upon the encapsulation format options, handle varying limits on sizes of packets, detect a looped-back link and other common miss configuration errors, and terminate the link. Other optional facilities provided are authentication of the identity of its peer on the link, and determination when a link is functioning properly and when its failing.
  • • IP Control Protocol(IPCP) is responsible for configuring, enabling and disabling the IP protocol modules on both ends of the point-to-point link. IPCP uses the same packet exchange mechanism as the Link Control Protocol(LCP). IPCP packets may not be exchanged until PPP has reached the Network-Layer Protocol phase. IPCP packets received before this phase is reached should of silently discarded.
  • • Password Authentication Protocol (PAP) is an authentication protocol that requires users to enter a password before accessing a secure system. The user’s name and password are sent over the wire to a server, where they are compared with a database of user account names and passwords. This technique is vulnerable to wiretapping (sniffing) because the password can be captured and use b
  • • Challenge Handshake Authentication Protocol (CHAP) is a type of authentication in which the authentication agent sends the client program a random value that is used only once and an ID value. Both the sender and peer share a predefined secret. The peer calculates a one-way hash using MD5 on the random value. The hash value is sent to the authenticator, which in turn builds that same string on its side, calculates the MD5 sum and compares the result with the value received from the peer. If the values match, the peer is identified.

Question 2

Question
Select the data link layer protocols that use HDLC as their basic frame structure.
Answer
  • Frame Relay
  • Ethernet
  • LAP-D
  • Q 921
  • PPP
  • RADIUS
  • IP
  • ATM

Question 3

Question
The ____ is the frame relay virtual circuit number (with local significance) which corresponds to a particular destination.
Answer
  • DLCI
  • DICL
  • DCLI

Question 4

Question
What is a DLCI
Answer
  • Frame Relay Term for Data Link Control identifier. It is a number which identifies a circuit which is terminated by Q. 931
  • ISDN Term for Data Link Connection identifier. It is a number which identifies a circuit which is terminated by Q. 931
  • Frame Relay Term for Data Link Control identifier. It is a number which identifies a private (PVC) or switched virtual circuit (SVC) in a Frame Relay network
  • Frame Relay Term for Data Link Connectionl identifier. It is a number which identifies a private (PVC) or switched virtual circuit (SVC) in a Frame Relay network

Question 5

Question
Unnumbered Serial Interfaces apply to interfaces that have yet to be configured.
Answer
  • True
  • False

Question 6

Question
In Frame Relay routers learn the data-link connection identifiers (DLCIs) they need to use from the Frame Relay switch via ___ updates. The routers then Inverse ARP for the remote IP address and create a mapping of local DLCIs and their associated remote IP addresses or a local mapping is manually configured.
Answer
  • LMI
  • LIM
  • BBC
  • ATM

Question 7

Question
The following two commands input on a serial interface with Frame Relay Encapsulation achieve the same result, true or false ? (config-if)# frame-relay map ip 191.200.210.2 11 broadcast or (config-if)# frame-relay inverse-arp
Answer
  • True
  • False

Question 8

Question
HDLC is the abbreviation for what and what purpose does it serve ?
Answer
  • High-Level Data Link Connection (HDLC) - Default encapsulation type on multipoint networks.
  • High-Level Data Link Control (HDLC) - Default encapsulation type on multipoint networks.
  • High-Level Data Link Control (HDLC) - Default encapsulation type on point-to-point, dedicated links, and circuit switched connections.
  • High-Level Data Link Connection (HDLC) - Default encapsulation type on point-to-point, dedicated links, and circuit switched connections.

Question 9

Question
Select the valid authentication methods within PPP
Answer
  • PAP
  • EAP
  • RADIUS
  • CHAP

Question 10

Question
What is the function of LMI in Frame Relay.
Answer
  • LMI (Local Management Interface) maps VC's to their corresponding switches.
  • LMI (Local Mapping Interface) maps VC's to their corresponding switches.
  • LMI (Local Management Interface) provides message information about current DLCI values (global or local significance), and the status of virtual circuits.
  • LMI (Local Mapping Interface) provides message information about current DLCI values (global or local significance), and the status of virtual circuits.
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