Quiz 2

Question 1

You send a 26-byte ping to another computer and perform a packet capture to analyze the network traffic. You notice a long series of bytes of 00000000 at the end of the Ethernet payload. How can you explain these zeros ?

1. Pings are a series of zeros

2. They are padding bytes

3. They are the Ethernet FCS

Question 2

Which of these messages is sent to all hosts on the local network ?

1. ARP Request

2. ARP Reply

3. ICMP Echo Request

4. ICMP Echo Reply

Question 3

Which fields are present in the output of the show mac address-table command on a Cisco switch ?

1. MAC Address, Ports

2. VLAN, MAC Address, Ports

3. VLAN, MAC Address, Type, Ports

4. Internet Address, Physical Address, Type

Question 4

Which type of frames does a switch send out of all interfaces, except the one the frame was received on ?

1. Broadcast, unknown unicast

2. Broadcast, known unicast

3. Known unicast, unknown unicast

4. Broadcast, unknown unicast, known unicast

Question 5

Which command is used on a Cisco switch to clear all dynamic MAC addresses on a specific interface from the MAC address table ?

1. clear mac address-table interface <interface id>

2. clear mac-address-table dynamic interface <interface id>

3. clear mac-address table dynamic interface <interface id>

4. clear mac address-table dynamic interface <interface id>

Solutions

Question 1

• They are padding bytes

Question 2

• ARP Request

Question 3

• VLAN, MAC Address, Type, Ports

Question 4

• Broadcast, unknown unicast

Question 5

• clear mac address-table dynamic interface <interface id>