Cisco Discovery 3 Module 7 Quiz Picture Descriptions

10 Questions

1.  What three parameters are defined by WAN standards? (choose three)
A. flow control
B. vendor
C. IP addressing
D. encapsulation
E. physical addressing
F. routing protocol

2.  Which two layers of the OSI model describe WAN standards? (choose two)
1. Session
2. Network
3. Physcial 
4. Transport
5. Data Link
6. Application

3. What are two characteristics of a CSU/DSU? (choose two)
A. used for digital transmission
B. -used for wireless transmission
C. installed at central Office 
D. often integrated into router interface card
E. part of an integrated Services router

4. Match the WAN connection term to the correct definition below.

Term
A. Packet Switching
B. Circuit Switching
C. Cell switching
D. SVC
E. PVC

Definition
1. virtual circuit that is dynamically established between two mpoints when a router requests a transmission.
2. Establishes a connection between end nodes before forwarding data and ensures dedicated bandwidth  through the length of transmission
3. Virtual circuit that provides a permanent path to forward data between two points.
4. Packets from multiple organizations are switched over the same links

5.  What two statements describe the Cisco implementation of High Level Data Link Control? (choose two)
A. is a data link layer protocol
B. provides retransmission and windowing
C. supports multiple protocols on a single link- uses the same frame format as standard HDLC
D. is the default encapsulation on Cisco LAN interfaces?

6. What two services allow the router to map data link layer addreses to network layer addresses in a Frame Relay network? (choose two)
A. ARP
B. ICMP
C. Proxy ARP
D. Inverse ARP
E. LMI status messages

7.  What is used to identify a destination for a frame in a Frame Relay network?
A. CIR
B. DLCI
C. FECN
D. BECN

8.  Which three statements are true regarding LCP  (choose three)?
A. It is responsible for negotiating link establishment 
B. It negotiates options for Layer 3 protocols running over PPP.
C. It uses MD5 encryption while negotiating link establishment parameters.
D. It terminates the link upon user request or the expiration of an inactivity timer
E. It can test the link t determine if link quality is sufficient to bring up the link
F. It monitors the link for congestion and dynamically adjusts the acceptable window size.

9.  Router A is linked to Router B by serial link.  The parameters set for each router are as follows.  

Router A
Hostname RTR A
Enable gateway
Username RTR_B password fortress
Interface serial 0/0/0
IP address 10.10.10.1 255.255.255.252
Encapsulation ppp
Ppp authentication chap

Router B
Hostname RTR B
Enable fortress
Interface serial 0/0/0
IP address 10.10.10.2 255.255.255.252
Encapsulation ppp
PPP authentication chap

Refer to the information above.  Which command must be added to router RTR_B to allow router RPR_A to authenticate using CHAP?
A. -RTR_B(config)#enable secret gateway
B. -RTR_B(config)#enable fortress
C. -RTR_B(config)#username RTR_B password fortress
D. -RTR_B(config)#username RTR_A password fortress
E. -RTR_B(config)#username RTR_B password gateway

10.  What are two features of the CHAP protocol?  (choose two)
A. exchanges random challenge number during the session to verify identity.
B. disconnects the PPP session if authentication fails
C. sends authentication password to verify identity
D. requires different passwords on each device
E. initiate a two-way handshake.