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WAN Questions CCNA 200-120

in New CCNA 200-120 on May 13, 2014

Which two options are valid WAN connectivity methods? (Choose two)
D. L2TPv3
E. Ethernet

Correct Answer: AC

Which command is used to enable CHAP authentication with PAP as the fallback method on a serial interface?
A. (config-if)# authentication ppp chap fallback ppp
B. config-if)# authentication ppp chap pap
C. (config-if)# ppp authentication chap pap
D. (config-if)# ppp authentication chap fallback ppp
Correct Answer: C

The command “ppp authentication chap pap” command indicates the CHAP authentication is used first. If it
fails or is rejected by other side then uses PAP instead. If you want to use PAP first (then CHAP) you can use
the “ppp authentication pap chap” command.

Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two)
A. CHAP uses a two-way handshake.
B. CHAP uses a three-way handshake
C. CHAP authentication periodically occurs after link establishment.
D. CHAP authentication passwords are sent in plaintext.
E. CHAP authentication is performed only upon link establishment.
F. CHAP has no protection from playback attacks.

Correct Answer: BC


A technician has installed SwitchB and needs to configure it for remote access from the management
workstation connected SwitchA. Which set of commands is required to accomplish this task?

A. SwitchB(config)#interface FastEthernet 0/1
SwitchB(config)#ip address
SwitchB(config)#no shutdown

B. SwitchB(config)#ip default-gateway
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address
SwitchB(config)#no shutdown

C. SwitchB(config)#interface vlan 1
SwitchB(config)#ip address
SwitchB(config)#ip default-gateway
SwitchB(config)#no shutdown

D. SwitchB(config)#ip default-network
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address
SwitchB(config)#no shutdown
Correct Answer: B

To remote access to SwitchB, it must have a management IP address on a VLAN on that switch. Traditionally,
we often use VLAN 1 as the management VLAN (but in fact it is not secure).
In the exhibit, we can recognize that the Management Workstation is in a different subnet from the SwitchB. For
intersubnetwork communication to occur, you must configure at least one default gateway. This default gateway
is used to forward traffic originating from the switch only, not to forward traffic sent by devices connected to the


What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet
VLAN? (Choose two)
A. The number of collision domains would remain the same.
B. The number of collision domains would decrease.
C. The number of collision domains would increase.
D. The number of broadcast domains would remain the same.
E. The number of broadcast domains would decrease.
F. The number of broadcast domains would increase.
Correct Answer: CD

Which three statements accurately describe layer 2 Ethernet switches? (choose three)
A. Microsegmentation decreases the number of collisions on the network.
B. If a switch receives a frame for an unknown destination.it uses ARP to resolve the address.
C. Spanning Tree Protocol allows switches to automatically share vlan information.
D. In a property functioning network with redundant switched paths, each switched segment will contain one
root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only
one root port.
E. Establishing vlans increases the number of broadcast domains.
F. Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3
address information.

Correct Answer: ADE


Categories: New CCNA 200-120

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