Refer to the exhibit.

Why was this message received?

Refer to the exhibit.

A network administrator is troubleshooting a connectivity problem on the serial interfaces.
The output from the show interfaces command on both routers shows that the serial interface is
up, line protocol is down. Given the partial output for the show running-config in the exhibit, what is
the most likely cause of this problem?

Refer to the graphic.

How many collision domains are shown?

Refer to the exhibit.

What is needed to allow host A to ping host B?

Host A needs to communicate with the email server shown in the graphic. What address will be
placed in the destination address field of the frame when it leaves Host A?

Refer to the exhibit.

The DHCP settings have recently been changed on the DHCP server and the
client is no longer able to reach network resources. What should be done to correct this situation?

Refer to the exhibit.

Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4.
What will Switch-1 do with this data?

Refer to the exhibit.

HostA cannot ping HostB. Assuming routing is properly configured, what could
be the cause of this problem?

Refer to the exhibit.

Host A has established a communication session with host B for the first time.
What enabled R1 to forward this traffic in the appropriate direction to reach the nework to which
host B is attached?

Refer to the exhibit.

Which statement describes the operational state of the FastEthernet 0/0 interface?